)]}'
{
  "log": [
    {
      "commit": "694f690d27dadccc8cb9d90532e76593b61fe098",
      "tree": "ea641e53ae530d0d3708fbfcab8109cc5e840d21",
      "parents": [
        "e75aa85892b2ee78c79edac720868cbef16e62eb"
      ],
      "author": {
        "name": "David Howells",
        "email": "dhowells@redhat.com",
        "time": "Wed Aug 04 16:59:14 2010 +0100"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Aug 04 11:17:10 2010 -0700"
      },
      "message": "CRED: Fix RCU warning due to previous patch fixing __task_cred()\u0027s checks\n\nCommit 8f92054e7ca1 (\"CRED: Fix __task_cred()\u0027s lockdep check and banner\ncomment\") fixed the lockdep checks on __task_cred().  This has shown up\na place in the signalling code where a lock should be held - namely that\ncheck_kill_permission() requires its callers to hold the RCU lock.\n\nFix group_send_sig_info() to get the RCU read lock around its call to\ncheck_kill_permission().\n\nWithout this patch, the following warning can occur:\n\n  \u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n  [ INFO: suspicious rcu_dereference_check() usage. ]\n  ---------------------------------------------------\n  kernel/signal.c:660 invoked rcu_dereference_check() without protection!\n  ...\n\nReported-by: Tetsuo Handa \u003cpenguin-kernel@i-love.sakura.ne.jp\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "09faef11df8c559a23e2405d123cb2683733a79a",
      "tree": "db8e4c94677be8afebde938c2e6b7ba07b6b6db0",
      "parents": [
        "9c3391684415c9dca239130d9e433a60a4edf04b"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@redhat.com",
        "time": "Wed May 26 14:43:11 2010 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu May 27 09:12:46 2010 -0700"
      },
      "message": "exit: change zap_other_threads() to count sub-threads\n\nChange zap_other_threads() to return the number of other sub-threads found\non -\u003ethread_group list.\n\nOther changes are cosmetic:\n\n\t- change the code to use while_each_thread() helper\n\n\t- remove the obsolete comment about SIGKILL/SIGSTOP\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: Veaceslav Falico \u003cvfalico@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "065add3941bdca54fe04ed3471a96bce9af88793",
      "tree": "0c3505a04bb1b54926c527644c0ee2f57680c250",
      "parents": [
        "e0129ef91ed758c06b6557c36124acfb2e1c7305"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@redhat.com",
        "time": "Wed May 26 14:42:54 2010 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu May 27 09:12:44 2010 -0700"
      },
      "message": "signals: check_kill_permission(): don\u0027t check creds if same_thread_group()\n\nAndrew Tridgell reports that aio_read(SIGEV_SIGNAL) can fail if the\nnotification from the helper thread races with setresuid(), see\nhttp://samba.org/~tridge/junkcode/aio_uid.c\n\nThis happens because check_kill_permission() doesn\u0027t permit sending a\nsignal to the task with the different cred-\u003exids.  But there is not any\nsecurity reason to check -\u003ecred\u0027s when the task sends a signal (private or\ngroup-wide) to its sub-thread.  Whatever we do, any thread can bypass all\nsecurity checks and send SIGKILL to all threads, or it can block a signal\nSIG and do kill(gettid(), SIG) to deliver this signal to another\nsub-thread.  Not to mention that CLONE_THREAD implies CLONE_VM.\n\nChange check_kill_permission() to avoid the credentials check when the\nsender and the target are from the same thread group.\n\nAlso, move \"cred \u003d current_cred()\" down to avoid calling get_current()\ntwice.\n\nNote: David Howells pointed out we could relax this even more, the\nCLONE_SIGHAND (without CLONE_THREAD) case probably does not need\nthese checks too.\n\nRoland said:\n: The glibc (libpthread) that does set*id across threads has\n: been in use for a while (2.3.4?), probably in distro\u0027s using kernels as old\n: or older than any active -stable streams.  In the race in question, this\n: kernel bug is breaking valid POSIX application expectations.\n\nReported-by: Andrew Tridgell \u003ctridge@samba.org\u003e\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nAcked-by: David Howells \u003cdhowells@redhat.com\u003e\nCc: Eric Paris \u003ceparis@parisplace.org\u003e\nCc: Jakub Jelinek \u003cjakub@redhat.com\u003e\nCc: James Morris \u003cjmorris@namei.org\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Stephen Smalley \u003csds@tycho.nsa.gov\u003e\nCc: \u003cstable@kernel.org\u003e\t\t[all kernel versions]\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "67fc4e0cb931d6b4ccf21248e4199b154478ecea",
      "tree": "4cf49d00bc9ac03c3c77d91fadd13fcabc75e0c9",
      "parents": [
        "5d5314d6795f3c1c0f415348ff8c51f7de042b77"
      ],
      "author": {
        "name": "Jason Wessel",
        "email": "jason.wessel@windriver.com",
        "time": "Thu May 20 21:04:21 2010 -0500"
      },
      "committer": {
        "name": "Jason Wessel",
        "email": "jason.wessel@windriver.com",
        "time": "Thu May 20 21:04:21 2010 -0500"
      },
      "message": "kdb: core for kgdb back end (2 of 2)\n\nThis patch contains the hooks and instrumentation into kernel which\nlive outside the kernel/debug directory, which the kdb core\nwill call to run commands like lsmod, dmesg, bt etc...\n\nCC: linux-arch@vger.kernel.org\nSigned-off-by: Jason Wessel \u003cjason.wessel@windriver.com\u003e\nSigned-off-by: Martin Hicks \u003cmort@sgi.com\u003e\n"
    },
    {
      "commit": "78d7d407b62a021e6d2e8dc24c0b90e390ab58a1",
      "tree": "8c1074b84db4b977bad6802a3701e0113c0a7739",
      "parents": [
        "d4bb527438b4181cd3c564ae04dd344c381283a1"
      ],
      "author": {
        "name": "Jiri Slaby",
        "email": "jslaby@suse.cz",
        "time": "Fri Mar 05 13:42:54 2010 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Mar 06 11:26:33 2010 -0800"
      },
      "message": "kernel core: use helpers for rlimits\n\nMake sure compiler won\u0027t do weird things with limits.  E.g.  fetching them\ntwice may return 2 different values after writable limits are implemented.\n\nI.e.  either use rlimit helpers added in commit 3e10e716abf3 (\"resource:\nadd helpers for fetching rlimits\") or ACCESS_ONCE if not applicable.\n\nSigned-off-by: Jiri Slaby \u003cjslaby@suse.cz\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Peter Zijlstra \u003cpeterz@infradead.org\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: john stultz \u003cjohnstul@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "a27341cd5fcb7cf2d2d4726e9f324009f7162c00",
      "tree": "5b55a232509de5791ad00a15da3eaa93c3ae55c6",
      "parents": [
        "eaa5eec739637f32f8733d528ff0b94fd62b1214"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Mar 02 08:36:46 2010 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Mar 03 19:21:10 2010 -0800"
      },
      "message": "Prioritize synchronous signals over \u0027normal\u0027 signals\n\nThis makes sure that we pick the synchronous signals caused by a\nprocessor fault over any pending regular asynchronous signals sent to\nuse by [t]kill().\n\nThis is not strictly required semantics, but it makes it _much_ easier\nfor programs like Wine that expect to find the fault information in the\nsignal stack.\n\nWithout this, if a non-synchronous signal gets picked first, the delayed\nasynchronous signal will have its signal context pointing to the new\nsignal invocation, rather than the instruction that caused the SIGSEGV\nor SIGBUS in the first place.\n\nThis is not all that pretty, and we\u0027re discussing making the synchronous\nsignals more explicit rather than have these kinds of implicit\npreferences of SIGSEGV and friends.  See for example\n\n\thttp://bugzilla.kernel.org/show_bug.cgi?id\u003d15395\n\nfor some of the discussion.  But in the meantime this is a simple and\nfairly straightforward work-around, and the whole\n\n\tif (x \u0026 Y)\n\t\tx \u0026\u003d Y;\n\nthing can be compiled into (and gcc does do it) just three instructions:\n\n\tmovq    %rdx, %rax\n\tandl    $Y, %eax\n\tcmovne  %rax, %rdx\n\nso it is at least a simple solution to a subtle issue.\n\nReported-and-tested-by: Pavel Vilim \u003cwylda@volny.cz\u003e\nAcked-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "b45c6e76bc2c72f6426c14bed64fdcbc9bf37cb0",
      "tree": "5b1d7a869db512f1297c82142adf006c3c6786c0",
      "parents": [
        "bd4f490a079730aadfaf9a728303ea0135c01945"
      ],
      "author": {
        "name": "Andi Kleen",
        "email": "andi@firstfloor.org",
        "time": "Fri Jan 08 14:42:52 2010 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Jan 11 09:34:05 2010 -0800"
      },
      "message": "kernel/signal.c: fix kernel information leak with print-fatal-signals\u003d1\n\nWhen print-fatal-signals is enabled it\u0027s possible to dump any memory\nreachable by the kernel to the log by simply jumping to that address from\nuser space.\n\nOr crash the system if there\u0027s some hardware with read side effects.\n\nThe fatal signals handler will dump 16 bytes at the execution address,\nwhich is fully controlled by ring 3.\n\nIn addition when something jumps to a unmapped address there will be up to\n16 additional useless page faults, which might be potentially slow (and at\nleast is not very efficient)\n\nFortunately this option is off by default and only there on i386.\n\nBut fix it by checking for kernel addresses and also stopping when there\u0027s\na page fault.\n\nSigned-off-by: Andi Kleen \u003cak@linux.intel.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "10e5453ffa0d04a2eda3cda3f55b88cb9c04595f",
      "tree": "def247dc399549bc1359fe9d1faa49c621f8890d",
      "parents": [
        "3cd312c3e887b4bee2d94668a481b3d19c07732c",
        "d4581a239a40319205762b76c01eb6363f277efa"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Dec 19 09:47:34 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Dec 19 09:47:34 2009 -0800"
      },
      "message": "Merge branch \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n  sys: Fix missing rcu protection for __task_cred() access\n  signals: Fix more rcu assumptions\n  signal: Fix racy access to __task_cred in kill_pid_info_as_uid()\n"
    },
    {
      "commit": "1be53963b0519bd3681749a9bed8b83aeb005cca",
      "tree": "0bc6497a8039021f781f1c902f59e6f71f772793",
      "parents": [
        "ad09750b51150ca87531b8790a379214a974c167"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@redhat.com",
        "time": "Tue Dec 15 16:47:26 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Dec 16 07:20:09 2009 -0800"
      },
      "message": "signals: check -\u003egroup_stop_count after tracehook_get_signal()\n\nMove the call to do_signal_stop() down, after tracehook call.  This makes\n-\u003egroup_stop_count condition visible to tracers before do_signal_stop()\nwill participate in this group-stop.\n\nCurrently the patch has no effect, tracehook_get_signal() always returns 0.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "ad09750b51150ca87531b8790a379214a974c167",
      "tree": "785520da252e18a058642c7bc95dda35100e4565",
      "parents": [
        "7486e5d9fc773cb67c29381567bed5236fc9573c"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@redhat.com",
        "time": "Tue Dec 15 16:47:25 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Dec 16 07:20:09 2009 -0800"
      },
      "message": "signals: kill force_sig_specific()\n\nKill force_sig_specific(), this trivial wrapper has no callers.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Sukadev Bhattiprolu \u003csukadev@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "7486e5d9fc773cb67c29381567bed5236fc9573c",
      "tree": "848f10295391c27ca16c8c58812f5e7a81856280",
      "parents": [
        "dd34200adc01c5217ef09b55905b5c2312d65535"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@redhat.com",
        "time": "Tue Dec 15 16:47:24 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Dec 16 07:20:09 2009 -0800"
      },
      "message": "signals: cosmetic, collect_signal: use SI_USER\n\nTrivial, s/0/SI_USER/ in collect_signal() for grep.\n\nThis is a bit confusing, we don\u0027t know the source of this signal.\nBut we don\u0027t care, and \"info-\u003esi_code \u003d 0\" is imho worse.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Sukadev Bhattiprolu \u003csukadev@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "dd34200adc01c5217ef09b55905b5c2312d65535",
      "tree": "7173ed6b5531086923a9221ef502f1dd2793c8a4",
      "parents": [
        "614c517d7c00af1b26ded20646b329397d6f51a1"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@redhat.com",
        "time": "Tue Dec 15 16:47:24 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Dec 16 07:20:09 2009 -0800"
      },
      "message": "signals: send_signal: use si_fromuser() to detect from_ancestor_ns\n\nChange send_signal() to use si_fromuser().  From now SEND_SIG_NOINFO\ntriggers the \"from_ancestor_ns\" check.\n\nThis fixes reparent_thread()-\u003egroup_send_sig_info(pdeath_signal)\nbehaviour, before this patch send_signal() does not detect the\ncross-namespace case when the child of the dying parent belongs to the\nsub-namespace.\n\nThis patch can affect the behaviour of send_sig(), kill_pgrp() and\nkill_pid() when the caller sends the signal to the sub-namespace with\n\"priv \u003d\u003d 0\" but surprisingly all callers seem to use them correctly,\nincluding disassociate_ctty(on_exit).\n\nExcept: drivers/staging/comedi/drivers/addi-data/*.c incorrectly use\nsend_sig(priv \u003d\u003e 0).  But his is minor and should be fixed anyway.\n\nReported-by: Daniel Lezcano \u003cdlezcano@fr.ibm.com\u003e\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nReviewed-by: Sukadev Bhattiprolu \u003csukadev@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "614c517d7c00af1b26ded20646b329397d6f51a1",
      "tree": "ddd7a82b3479c9fabe141b4c82a1794650a82b4f",
      "parents": [
        "d51965037325e51f6cd68583413243c3573e47b0"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@redhat.com",
        "time": "Tue Dec 15 16:47:22 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Dec 16 07:20:08 2009 -0800"
      },
      "message": "signals: SEND_SIG_NOINFO should be considered as SI_FROMUSER()\n\nNo changes in compiled code. The patch adds the new helper, si_fromuser()\nand changes check_kill_permission() to use this helper.\n\nThe real effect of this patch is that from now we \"officially\" consider\nSEND_SIG_NOINFO signal as \"from user-space\" signals. This is already true\nif we look at the code which uses SEND_SIG_NOINFO, except __send_signal()\nhas another opinion - see the next patch.\n\nThe naming of these special SEND_SIG_XXX siginfo\u0027s is really bad\nimho.  From __send_signal()\u0027s pov they mean\n\n\tSEND_SIG_NOINFO\t\tfrom user\n\tSEND_SIG_PRIV\t\tfrom kernel\n\tSEND_SIG_FORCED\t\tno info\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nReviewed-by: Sukadev Bhattiprolu \u003csukadev@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "7cf7db8df0b78076eafa4ead47559344ca7b7a43",
      "tree": "5e536389e23d6c00fc93e51a4e4b90cfeac3fbc6",
      "parents": [
        "14d8c9f3c09e7fd7b9af80904289fe204f5b93c6"
      ],
      "author": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Thu Dec 10 00:53:21 2009 +0000"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Thu Dec 10 23:04:11 2009 +0100"
      },
      "message": "signals: Fix more rcu assumptions\n\n1) Remove the misleading comment in __sigqueue_alloc() which claims\n   that holding a spinlock is equivalent to rcu_read_lock().\n\n2) Add a rcu_read_lock/unlock around the __task_cred() access\n   in __sigqueue_alloc()\n\nThis needs to be revisited to remove the remaining users of\nread_lock(\u0026tasklist_lock) but that\u0027s outside the scope of this patch.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nLKML-Reference: \u003c20091210004703.269843657@linutronix.de\u003e\n"
    },
    {
      "commit": "14d8c9f3c09e7fd7b9af80904289fe204f5b93c6",
      "tree": "1c373436517c5853aab0e99cce83364a21134d0e",
      "parents": [
        "ea5b41f9d595be354f7a50e56b28c2d72e6e88a5"
      ],
      "author": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Thu Dec 10 00:53:17 2009 +0000"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Thu Dec 10 23:04:11 2009 +0100"
      },
      "message": "signal: Fix racy access to __task_cred in kill_pid_info_as_uid()\n\nkill_pid_info_as_uid() accesses __task_cred() without being in a RCU\nread side critical section. tasklist_lock is not protecting that when\nCONFIG_TREE_PREEMPT_RCU\u003dy.\n\nConvert the whole tasklist_lock section to rcu and use\nlock_task_sighand to prevent the exit race.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nLKML-Reference: \u003c20091210004703.232302055@linutronix.de\u003e\nAcked-by: Oleg Nesterov \u003coleg@redhat.com\u003e\n"
    },
    {
      "commit": "c3fa27d1367fac63ac8533d6f20ea851d0d70a10",
      "tree": "e7731554085e22b6b63411b1ebb401079f3e0bbb",
      "parents": [
        "96fa2b508d2d3fe040cf4ef2fffb955f0a537ea1",
        "d103d01e4b19f185d3c85f77402b605534c32e89"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Dec 05 15:30:21 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Dec 05 15:30:21 2009 -0800"
      },
      "message": "Merge branch \u0027perf-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027perf-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (470 commits)\n  x86: Fix comments of register/stack access functions\n  perf tools: Replace %m with %a in sscanf\n  hw-breakpoints: Keep track of user disabled breakpoints\n  tracing/syscalls: Make syscall events print callbacks static\n  tracing: Add DEFINE_EVENT(), DEFINE_SINGLE_EVENT() support to docbook\n  perf: Don\u0027t free perf_mmap_data until work has been done\n  perf_event: Fix compile error\n  perf tools: Fix _GNU_SOURCE macro related strndup() build error\n  trace_syscalls: Remove unused syscall_name_to_nr()\n  trace_syscalls: Simplify syscall profile\n  trace_syscalls: Remove duplicate init_enter_##sname()\n  trace_syscalls: Add syscall_nr field to struct syscall_metadata\n  trace_syscalls: Remove enter_id exit_id\n  trace_syscalls: Set event_enter_##sname-\u003edata to its metadata\n  trace_syscalls: Remove unused event_syscall_enter and event_syscall_exit\n  perf_event: Initialize data.period in perf_swevent_hrtimer()\n  perf probe: Simplify event naming\n  perf probe: Add --list option for listing current probe events\n  perf probe: Add argv_split() from lib/argv_split.c\n  perf probe: Move probe event utility functions to probe-event.c\n  ...\n"
    },
    {
      "commit": "ba005e1f417295d28cd1563ab82bc33af07fb16a",
      "tree": "d771659edc46c1bd5467578a6616657c8cf26db5",
      "parents": [
        "f9d4257e01d266e67420cc99d456b6d4c8464f54"
      ],
      "author": {
        "name": "Masami Hiramatsu",
        "email": "mhiramat@redhat.com",
        "time": "Tue Nov 24 16:56:58 2009 -0500"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Thu Nov 26 10:55:38 2009 +0100"
      },
      "message": "tracepoint: Add signal loss events\n\nAdd signal_overflow_fail and signal_lose_info tracepoints\nfor signal-lost events.\n\nChanges in v3:\n - Add docbook style comments\n\nChanges in v2:\n - Use siginfo string macro\n\nSuggested-by: Roland McGrath \u003croland@redhat.com\u003e\nReviewed-by: Jason Baron \u003cjbaron@redhat.com\u003e\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: systemtap \u003csystemtap@sources.redhat.com\u003e\nCc: DLE \u003cdle-develop@lists.sourceforge.net\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nLKML-Reference: \u003c20091124215658.30449.9934.stgit@dhcp-100-2-132.bos.redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "f9d4257e01d266e67420cc99d456b6d4c8464f54",
      "tree": "6661efc95e3002b9b1bf8d9c94deb9ec736a04de",
      "parents": [
        "d1eb650ff4130972fa21462fa49cd35a2865403b"
      ],
      "author": {
        "name": "Masami Hiramatsu",
        "email": "mhiramat@redhat.com",
        "time": "Tue Nov 24 16:56:51 2009 -0500"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Thu Nov 26 10:55:38 2009 +0100"
      },
      "message": "tracepoint: Add signal deliver event\n\nAdd a tracepoint where a process gets a signal. This tracepoint\nshows signal-number, sa-handler and sa-flag.\n\nChanges in v3:\n - Add docbook style comments\n\nChanges in v2:\n - Add siginfo argument\n - Fix comment\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nReviewed-by: Jason Baron \u003cjbaron@redhat.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: systemtap \u003csystemtap@sources.redhat.com\u003e\nCc: DLE \u003cdle-develop@lists.sourceforge.net\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nLKML-Reference: \u003c20091124215651.30449.20926.stgit@dhcp-100-2-132.bos.redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "d1eb650ff4130972fa21462fa49cd35a2865403b",
      "tree": "e43cee89ccad8adfa06f2e5f746ad96d2e00d9b3",
      "parents": [
        "80bbf6b641c8843b9d751a1f299aa7ee073ab9d4"
      ],
      "author": {
        "name": "Masami Hiramatsu",
        "email": "mhiramat@redhat.com",
        "time": "Tue Nov 24 16:56:45 2009 -0500"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Thu Nov 26 10:55:37 2009 +0100"
      },
      "message": "tracepoint: Move signal sending tracepoint to events/signal.h\n\nMove signal sending event to events/signal.h. This patch also\nrenames sched_signal_send event to signal_generate.\n\nChanges in v4:\n - Fix a typo of task_struct pointer.\n\nChanges in v3:\n - Add docbook style comments\n\nChanges in v2:\n - Add siginfo argument\n - Add siginfo storing macro\n\nSigned-off-by: Masami Hiramatsu \u003cmhiramat@redhat.com\u003e\nReviewed-by: Jason Baron \u003cjbaron@redhat.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: systemtap \u003csystemtap@sources.redhat.com\u003e\nCc: DLE \u003cdle-develop@lists.sourceforge.net\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nLKML-Reference: \u003c20091124215645.30449.60208.stgit@dhcp-100-2-132.bos.redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "f84d49b218b7d4c6cba2e0b41f24bd4045403962",
      "tree": "d62ed0c15152c1a0a78fb75feac649dafc05b041",
      "parents": [
        "2a855dd01bc1539111adb7233f587c5c468732ac"
      ],
      "author": {
        "name": "Naohiro Ooiwa",
        "email": "nooiwa@miraclelinux.com",
        "time": "Mon Nov 09 00:46:42 2009 +0900"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Mon Nov 09 09:44:26 2009 +0100"
      },
      "message": "signal: Print warning message when dropping signals\n\nWhen the system has too many timers or too many aggregate\nqueued signals, the EAGAIN error is returned to application\nfrom kernel, including timer_create() [POSIX.1b].\n\nIt means that the app exceeded the limit of pending signals,\nbut in general application writers do not expect this\noutcome and the current silent failure can cause rare app\nfailures under very high load.\n\nThis patch adds a new message when we reach the limit\nand if print_fatal_signals is enabled:\n\n    task/1234: reached RLIMIT_SIGPENDING, dropping signal\n\nIf you see this message and your system behaved unexpectedly,\nyou can run following command to lift the limit:\n\n   # ulimit -i unlimited\n\nWith help from Hiroshi Shimamoto \u003ch-shimamoto@ct.jp.nec.com\u003e.\n\nSigned-off-by: Naohiro Ooiwa \u003cnooiwa@miraclelinux.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Hiroshi Shimamoto \u003ch-shimamoto@ct.jp.nec.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: oleg@redhat.com\nLKML-Reference: \u003c4AF6E7E2.9080406@miraclelinux.com\u003e\n[ Modified a few small details, gave surrounding code some love. ]\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "d9588725e52650e82989707f8fd2feb67ad2dc8e",
      "tree": "39a9f9f5e8ba6a6e008b9ada310347e24ede400e",
      "parents": [
        "ba0a6c9f6fceed11c6a99e8326f0477fe383e6b5"
      ],
      "author": {
        "name": "Roland McGrath",
        "email": "roland@redhat.com",
        "time": "Wed Sep 23 15:57:04 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Sep 24 07:21:01 2009 -0700"
      },
      "message": "signals: inline __fatal_signal_pending\n\n__fatal_signal_pending inlines to one instruction on x86, probably two\ninstructions on other machines.  It takes two longer x86 instructions just\nto call it and test its return value, not to mention the function itself.\n\nOn my random x86_64 config, this saved 70 bytes of text (59 of those being\n__fatal_signal_pending itself).\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "4a30debfb778240a4b1767d4b0c5a5b25ab97160",
      "tree": "bc4fed4ebb8368ebbfa719a004b15101b0a71d53",
      "parents": [
        "964ee7df90d799e38fb1556c57cd5c45fc736436"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@redhat.com",
        "time": "Wed Sep 23 15:57:00 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Sep 24 07:21:01 2009 -0700"
      },
      "message": "signals: introduce do_send_sig_info() helper\n\nIntroduce do_send_sig_info() and convert group_send_sig_info(),\nsend_sig_info(), do_send_specific() to use this helper.\n\nHopefully it will have more users soon, it allows to specify\nspecific/group behaviour via \"bool group\" argument.\n\nShaves 80 bytes from .text.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: stephane eranian \u003ceranian@googlemail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "ae6d2ed7bb3877ff35b9569402025f40ea2e1803",
      "tree": "80527061ab7615cd890236b777b2be6e909a1573",
      "parents": [
        "b6fe2d117e98805ee76352e6468f87d494a97292"
      ],
      "author": {
        "name": "Roland McGrath",
        "email": "roland@redhat.com",
        "time": "Wed Sep 23 15:56:53 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Sep 24 07:21:00 2009 -0700"
      },
      "message": "signals: tracehook_notify_jctl change\n\nThis changes tracehook_notify_jctl() so it\u0027s called with the siglock held,\nand changes its argument and return value definition.  These clean-ups\nmake it a better fit for what new tracing hooks need to check.\n\nTracing needs the siglock here, held from the time TASK_STOPPED was set,\nto avoid potential SIGCONT races if it wants to allow any blocking in its\ntracing hooks.\n\nThis also folds the finish_stop() function into its caller\ndo_signal_stop().  The function is short, called only once and only\nunconditionally.  It aids readability to fold it in.\n\n[oleg@redhat.com: do not call tracehook_notify_jctl() in TASK_STOPPED state]\n[oleg@redhat.com: introduce tracehook_finish_jctl() helper]\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "a7f0765edfd53aed09cb7b0e15863688b39447de",
      "tree": "c89adfe418f9988ad4044e0f22827458bdf6b155",
      "parents": [
        "1dd3a27326d307952f8ad2499478c84dc7311517"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@redhat.com",
        "time": "Wed Sep 23 15:56:44 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Sep 24 07:20:59 2009 -0700"
      },
      "message": "ptrace: __ptrace_detach: do __wake_up_parent() if we reap the tracee\n\nThe bug is old, it wasn\u0027t cause by recent changes.\n\nTest case:\n\n\tstatic void *tfunc(void *arg)\n\t{\n\t\tint pid \u003d (long)arg;\n\n\t\tassert(ptrace(PTRACE_ATTACH, pid, NULL, NULL) \u003d\u003d 0);\n\t\tkill(pid, SIGKILL);\n\n\t\tsleep(1);\n\t\treturn NULL;\n\t}\n\n\tint main(void)\n\t{\n\t\tpthread_t th;\n\t\tlong pid \u003d fork();\n\n\t\tif (!pid)\n\t\t\tpause();\n\n\t\tsignal(SIGCHLD, SIG_IGN);\n\t\tassert(pthread_create(\u0026th, NULL, tfunc, (void*)pid) \u003d\u003d 0);\n\n\t\tint r \u003d waitpid(-1, NULL, __WNOTHREAD);\n\t\tprintf(\"waitpid: %d %m\\n\", r);\n\n\t\treturn 0;\n\t}\n\nBefore the patch this program hangs, after this patch waitpid() correctly\nfails with errno \u003d\u003d -ECHILD.\n\nThe problem is, __ptrace_detach() reaps the EXIT_ZOMBIE tracee if its\n-\u003ereal_parent is our sub-thread and we ignore SIGCHLD.  But in this case\nwe should wake up other threads which can sleep in do_wait().\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Vitaly Mayatskikh \u003cvmayatsk@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "0dd8486b5cfe8048e0613334659d9252ecd1b08a",
      "tree": "c221d40b94aecfd75b25dea768bba0b9f97cb9c8",
      "parents": [
        "0083fc2c50e6c5127c2802ad323adf8143ab7856"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Aug 01 11:18:56 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Aug 01 11:18:56 2009 -0700"
      },
      "message": "do_sigaltstack: small cleanups\n\nThe previous commit (\"do_sigaltstack: avoid copying \u0027stack_t\u0027 as a\nstructure to user space\") fixed a real bug.  This one just cleans up the\ncopy from user space to that gcc can generate better code for it (and so\nthat it looks the same as the later copy back to user space).\n\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "0083fc2c50e6c5127c2802ad323adf8143ab7856",
      "tree": "0ec735c46d8be4ae4c637243b126feba0be2ebe8",
      "parents": [
        "ed680c4ad478d0fee9740f7d029087f181346564"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Aug 01 10:34:56 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Aug 01 10:46:52 2009 -0700"
      },
      "message": "do_sigaltstack: avoid copying \u0027stack_t\u0027 as a structure to user space\n\nUlrich Drepper correctly points out that there is generally padding in\nthe structure on 64-bit hosts, and that copying the structure from\nkernel to user space can leak information from the kernel stack in those\npadding bytes.\n\nAvoid the whole issue by just copying the three members one by one\ninstead, which also means that the function also can avoid the need for\na stack frame.  This also happens to match how we copy the new structure\nfrom user space, so it all even makes sense.\n\n[ The obvious solution of adding a memset() generates horrid code, gcc\n  does really stupid things. ]\n\nReported-by: Ulrich Drepper \u003cdrepper@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "d92656633b8352c6d4b14afcb7beb154d76e7aa6",
      "tree": "616dabaff973bc4483ece684c93afdb2dcacff59",
      "parents": [
        "d1e98f429aa10132b3010ba3b0be47552a2eb14b"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@redhat.com",
        "time": "Wed Jun 17 16:27:35 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jun 18 13:03:52 2009 -0700"
      },
      "message": "ptrace: do_notify_parent_cldstop: fix the wrong -\u003ensproxy usage\n\nIf the non-traced sub-thread calls do_notify_parent_cldstop(), we send the\nnotification to group_leader-\u003ereal_parent and we report group_leader\u0027s\npid.\n\nBut, if group_leader is traced we use the wrong -\u003eparent-\u003ensproxy-\u003epid_ns,\nthe tracer and parent can live in different namespaces.  Change the code\nto use \"parent\" instead of tsk-\u003eparent.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nAcked-by: Sukadev Bhattiprolu \u003csukadev@linux.vnet.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "5cb11446892833e50970fb2277a9f7563b0a8bd3",
      "tree": "9cb858cb093c4b927601ef8a612d8dd791aeb1c8",
      "parents": [
        "1c216279539bd65c5a3d497e25d441dbddbcf1ec"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@redhat.com",
        "time": "Wed Jun 17 16:27:30 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jun 18 13:03:51 2009 -0700"
      },
      "message": "ptrace: do not use task-\u003eptrace directly in core kernel\n\nNo functional changes.\n\n- Nobody except ptrace.c \u0026 co should use ptrace flags directly, we have\n  task_ptrace() for that.\n\n- No need to specially check PT_PTRACED, we must not have other PT_ bits\n  set without PT_PTRACED. And no need to know this flag exists.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "7a0aeb14e18ad59394bd9bbc6e57fb345819e748",
      "tree": "04c7229103e1009ad8886ed663e047abe58805fb",
      "parents": [
        "3b5c760efcddf1ebdd39a2035b554e96febd7466"
      ],
      "author": {
        "name": "Vegard Nossum",
        "email": "vegard.nossum@gmail.com",
        "time": "Sat May 16 11:28:33 2009 +0200"
      },
      "committer": {
        "name": "Vegard Nossum",
        "email": "vegard.nossum@gmail.com",
        "time": "Mon Jun 15 15:49:43 2009 +0200"
      },
      "message": "signal: fix __send_signal() false positive kmemcheck warning\n\nThis false positive is due to field padding in struct sigqueue. When\nthis dynamically allocated structure is copied to the stack (in arch-\nspecific delivery code), kmemcheck sees a read from the padding, which\nis, naturally, uninitialized.\n\nHide the false positive using the __GFP_NOTRACK_FALSE_POSITIVE flag.\nAlso made the rlimit override code a bit clearer by introducing a new\nvariable.\n\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Vegard Nossum \u003cvegard.nossum@gmail.com\u003e\n"
    },
    {
      "commit": "3296ca27f50ecbd71db1d808c7a72d311027f919",
      "tree": "833eaa58b2013bda86d4bd95faf6efad7a2d5ca4",
      "parents": [
        "e893123c7378192c094747dadec326b7c000c190",
        "73fbad283cfbbcf02939bdbda31fc4a30e729cca"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jun 11 10:01:41 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jun 11 10:01:41 2009 -0700"
      },
      "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6\n\n* \u0027for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: (44 commits)\n  nommu: Provide mmap_min_addr definition.\n  TOMOYO: Add description of lists and structures.\n  TOMOYO: Remove unused field.\n  integrity: ima audit dentry_open failure\n  TOMOYO: Remove unused parameter.\n  security: use mmap_min_addr indepedently of security models\n  TOMOYO: Simplify policy reader.\n  TOMOYO: Remove redundant markers.\n  SELinux: define audit permissions for audit tree netlink messages\n  TOMOYO: Remove unused mutex.\n  tomoyo: avoid get+put of task_struct\n  smack: Remove redundant initialization.\n  integrity: nfsd imbalance bug fix\n  rootplug: Remove redundant initialization.\n  smack: do not beyond ARRAY_SIZE of data\n  integrity: move ima_counts_get\n  integrity: path_check update\n  IMA: Add __init notation to ima functions\n  IMA: Minimal IMA policy and boot param for TCB IMA policy\n  selinux: remove obsolete read buffer limit from sel_read_bool\n  ...\n"
    },
    {
      "commit": "862366118026a358882eefc70238dbcc3db37aac",
      "tree": "4eb62bc10327a5afac064a95a091ea05ecd2acc1",
      "parents": [
        "57eee9ae7bbcfb692dc96c739a5184adb6349733",
        "511b01bdf64ad8a38414096eab283c7784aebfc4"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Jun 10 19:53:40 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Jun 10 19:53:40 2009 -0700"
      },
      "message": "Merge branch \u0027tracing-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027tracing-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (244 commits)\n  Revert \"x86, bts: reenable ptrace branch trace support\"\n  tracing: do not translate event helper macros in print format\n  ftrace/documentation: fix typo in function grapher name\n  tracing/events: convert block trace points to TRACE_EVENT(), fix !CONFIG_BLOCK\n  tracing: add protection around module events unload\n  tracing: add trace_seq_vprint interface\n  tracing: fix the block trace points print size\n  tracing/events: convert block trace points to TRACE_EVENT()\n  ring-buffer: fix ret in rb_add_time_stamp\n  ring-buffer: pass in lockdep class key for reader_lock\n  tracing: add annotation to what type of stack trace is recorded\n  tracing: fix multiple use of __print_flags and __print_symbolic\n  tracing/events: fix output format of user stack\n  tracing/events: fix output format of kernel stack\n  tracing/trace_stack: fix the number of entries in the header\n  ring-buffer: discard timestamps that are at the start of the buffer\n  ring-buffer: try to discard unneeded timestamps\n  ring-buffer: fix bug in ring_buffer_discard_commit\n  ftrace: do not profile functions when disabled\n  tracing: make trace pipe recognize latency format flag\n  ...\n"
    },
    {
      "commit": "d254117099d711f215e62427f55dfb8ebd5ad011",
      "tree": "0848ff8dd74314fec14a86497f8d288c86ba7c65",
      "parents": [
        "07ff7a0b187f3951788f64ae1f30e8109bc8e9eb",
        "8c9ed899b44c19e81859fbb0e9d659fe2f8630fc"
      ],
      "author": {
        "name": "James Morris",
        "email": "jmorris@namei.org",
        "time": "Fri May 08 17:56:47 2009 +1000"
      },
      "committer": {
        "name": "James Morris",
        "email": "jmorris@namei.org",
        "time": "Fri May 08 17:56:47 2009 +1000"
      },
      "message": "Merge branch \u0027master\u0027 into next\n"
    },
    {
      "commit": "62ab4505e3efaf67784f84059e0fb9cedb1728ea",
      "tree": "54da8395eaf30a0386cd71214fbabe94ded229e2",
      "parents": [
        "30b4ae8a4498543863501f707879b7220b649602"
      ],
      "author": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Sat Apr 04 21:01:06 2009 +0000"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Thu Apr 30 19:24:24 2009 +0200"
      },
      "message": "signals: implement sys_rt_tgsigqueueinfo\n\nsys_kill has the per thread counterpart sys_tgkill. sigqueueinfo is\nmissing a thread directed counterpart. Such an interface is important\nfor migrating applications from other OSes which have the per thread\ndelivery implemented.\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nReviewed-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nAcked-by: Ulrich Drepper \u003cdrepper@redhat.com\u003e\n"
    },
    {
      "commit": "30b4ae8a4498543863501f707879b7220b649602",
      "tree": "c8207d2f7221b5b89b1e7cb6b896135f0f061f69",
      "parents": [
        "091438dd5668396328a3419abcbc6591159eb8d1"
      ],
      "author": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Sat Apr 04 21:01:01 2009 +0000"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Thu Apr 30 19:24:23 2009 +0200"
      },
      "message": "signals: split do_tkill\n\nSplit out the code from do_tkill to make it reusable by the follow up\npatch which implements sys_rt_tgsigqueueinfo\n\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nReviewed-by: Oleg Nesterov \u003coleg@redhat.com\u003e\n"
    },
    {
      "commit": "3bcac0263f0b45e67a64034ebcb69eb9abb742f4",
      "tree": "33f4db08edaa12e1c20df348e2fa28c7c2198ebe",
      "parents": [
        "88c48db9788862d0290831d081bc3c64e13b592f"
      ],
      "author": {
        "name": "David Howells",
        "email": "dhowells@redhat.com",
        "time": "Wed Apr 29 13:45:05 2009 +0100"
      },
      "committer": {
        "name": "James Morris",
        "email": "jmorris@namei.org",
        "time": "Thu Apr 30 09:07:13 2009 +1000"
      },
      "message": "SELinux: Don\u0027t flush inherited SIGKILL during execve()\n\nDon\u0027t flush inherited SIGKILL during execve() in SELinux\u0027s post cred commit\nhook.  This isn\u0027t really a security problem: if the SIGKILL came before the\ncredentials were changed, then we were right to receive it at the time, and\nshould honour it; if it came after the creds were changed, then we definitely\nshould honour it; and in any case, all that will happen is that the process\nwill be scrapped before it ever returns to userspace.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n"
    },
    {
      "commit": "ad8d75fff811a6a230f7f43b05a6483099349533",
      "tree": "764f75c0785b29067b141719b6e8000f005da7fd",
      "parents": [
        "ecda8ae02a08ef065ff387f5cb2a2d4999da2408"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Tue Apr 14 19:39:12 2009 -0400"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Tue Apr 14 22:05:43 2009 -0400"
      },
      "message": "tracing/events: move trace point headers into include/trace/events\n\nImpact: clean up\n\nCreate a sub directory in include/trace called events to keep the\ntrace point headers in their own separate directory. Only headers that\ndeclare trace points should be defined in this directory.\n\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Neil Horman \u003cnhorman@tuxdriver.com\u003e\nCc: Zhao Lei \u003czhaolei@cn.fujitsu.com\u003e\nCc: Eduard - Gabriel Munteanu \u003ceduard.munteanu@linux360.ro\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "a8d154b009168337494fbf345671bab74d3e4b8b",
      "tree": "4097612e1a5cc8bf7658542f7d0f51b815113eaf",
      "parents": [
        "ea20d9293ce423a39717ed4375393129a2e701f9"
      ],
      "author": {
        "name": "Steven Rostedt",
        "email": "srostedt@redhat.com",
        "time": "Fri Apr 10 09:36:00 2009 -0400"
      },
      "committer": {
        "name": "Steven Rostedt",
        "email": "rostedt@goodmis.org",
        "time": "Tue Apr 14 12:57:28 2009 -0400"
      },
      "message": "tracing: create automated trace defines\n\nThis patch lowers the number of places a developer must modify to add\nnew tracepoints. The current method to add a new tracepoint\ninto an existing system is to write the trace point macro in the\ntrace header with one of the macros TRACE_EVENT, TRACE_FORMAT or\nDECLARE_TRACE, then they must add the same named item into the C file\nwith the macro DEFINE_TRACE(name) and then add the trace point.\n\nThis change cuts out the needing to add the DEFINE_TRACE(name).\nEvery file that uses the tracepoint must still include the trace/\u003ctype\u003e.h\nfile, but the one C file must also add a define before the including\nof that file.\n\n #define CREATE_TRACE_POINTS\n #include \u003ctrace/mytrace.h\u003e\n\nThis will cause the trace/mytrace.h file to also produce the C code\nnecessary to implement the trace point.\n\nNote, if more than one trace/\u003ctype\u003e.h is used to create the C code\nit is best to list them all together.\n\n #define CREATE_TRACE_POINTS\n #include \u003ctrace/foo.h\u003e\n #include \u003ctrace/bar.h\u003e\n #include \u003ctrace/fido.h\u003e\n\nThanks to Mathieu Desnoyers and Christoph Hellwig for coming up with\nthe cleaner solution of the define above the includes over my first\ndesign to have the C code include a \"special\" header.\n\nThis patch converts sched, irq and lockdep and skb to use this new\nmethod.\n\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Neil Horman \u003cnhorman@tuxdriver.com\u003e\nCc: Zhao Lei \u003czhaolei@cn.fujitsu.com\u003e\nCc: Eduard - Gabriel Munteanu \u003ceduard.munteanu@linux360.ro\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nSigned-off-by: Steven Rostedt \u003crostedt@goodmis.org\u003e\n"
    },
    {
      "commit": "6588c1e3ff01418acafd938db0740e3477dc8cb7",
      "tree": "b58beed5813667619be47c5d064f8f78804e92d1",
      "parents": [
        "b3bfa0cba867f23365b81658b47efd906830879b"
      ],
      "author": {
        "name": "Sukadev Bhattiprolu",
        "email": "sukadev@linux.vnet.ibm.com",
        "time": "Thu Apr 02 16:58:09 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Apr 02 19:04:58 2009 -0700"
      },
      "message": "signals: SI_USER: Masquerade si_pid when crossing pid ns boundary\n\nWhen sending a signal to a descendant namespace, set -\u003esi_pid to 0 since\nthe sender does not have a pid in the receiver\u0027s namespace.\n\nNote:\n\t- If rt_sigqueueinfo() sets si_code to SI_USER when sending a\n\t  signal across a pid namespace boundary, the value in -\u003esi_pid\n\t  will be cleared to 0.\n\nSigned-off-by: Sukadev Bhattiprolu \u003csukadev@linux.vnet.ibm.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Daniel Lezcano \u003cdaniel.lezcano@free.fr\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "b3bfa0cba867f23365b81658b47efd906830879b",
      "tree": "e54d9a9c4c23fc00bb2ff3ed57ef5317a0660ea5",
      "parents": [
        "e4da026f980df125a4918c3bb9fe93185c7ef12a"
      ],
      "author": {
        "name": "Sukadev Bhattiprolu",
        "email": "sukadev@linux.vnet.ibm.com",
        "time": "Thu Apr 02 16:58:08 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Apr 02 19:04:58 2009 -0700"
      },
      "message": "signals: protect cinit from blocked fatal signals\n\nNormally SIG_DFL signals to global and container-init are dropped early.\nBut if a signal is blocked when it is posted, we cannot drop the signal\nsince the receiver may install a handler before unblocking the signal.\nOnce this signal is queued however, the receiver container-init has no way\nof knowing if the signal was sent from an ancestor or descendant\nnamespace.  This patch ensures that contianer-init drops all SIG_DFL\nsignals in get_signal_to_deliver() except SIGKILL/SIGSTOP.\n\nIf SIGSTOP/SIGKILL originate from a descendant of container-init they are\nnever queued (i.e dropped in sig_ignored() in an earler patch).\n\nIf SIGSTOP/SIGKILL originate from parent namespace, the signal is queued\nand container-init processes the signal.\n\nIOW, if get_signal_to_deliver() sees a sig_kernel_only() signal for global\nor container-init, the signal must have been generated internally or must\nhave come from an ancestor ns and we process the signal.\n\nFurther, the signal_group_exit() check was needed to cover the case of a\nmulti-threaded init sending SIGKILL to other threads when doing an exit()\nor exec().  But since the new sig_kernel_only() check covers the SIGKILL,\nthe signal_group_exit() check is no longer needed and can be removed.\n\nFinally, now that we have all pieces in place, set SIGNAL_UNKILLABLE for\ncontainer-inits.\n\nSigned-off-by: Sukadev Bhattiprolu \u003csukadev@linux.vnet.ibm.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Daniel Lezcano \u003cdaniel.lezcano@free.fr\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "921cf9f63089c7442d44083477620132f4cea066",
      "tree": "2a79eb0f7328ba2f05759d1b2c1e141bcfe4aafc",
      "parents": [
        "7978b567d31555fc828b8f945c605ad29e117b22"
      ],
      "author": {
        "name": "Sukadev Bhattiprolu",
        "email": "sukadev@linux.vnet.ibm.com",
        "time": "Thu Apr 02 16:58:05 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Apr 02 19:04:58 2009 -0700"
      },
      "message": "signals: protect cinit from unblocked SIG_DFL signals\n\nDrop early any SIG_DFL or SIG_IGN signals to container-init from within\nthe same container.  But queue SIGSTOP and SIGKILL to the container-init\nif they are from an ancestor container.\n\nBlocked, fatal signals (i.e when SIG_DFL is to terminate) from within the\ncontainer can still terminate the container-init.  That will be addressed\nin the next patch.\n\nNote:\tTo be bisect-safe, SIGNAL_UNKILLABLE will be set for container-inits\n   \tin a follow-on patch. Until then, this patch is just a preparatory\n\tstep.\n\nSigned-off-by: Sukadev Bhattiprolu \u003csukadev@linux.vnet.ibm.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Daniel Lezcano \u003cdaniel.lezcano@free.fr\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "7978b567d31555fc828b8f945c605ad29e117b22",
      "tree": "a66d7880f3031e417c2afb76c990ed5340565816",
      "parents": [
        "f008faff0e2777c8b3fe853891b774ca465938d8"
      ],
      "author": {
        "name": "Sukadev Bhattiprolu",
        "email": "sukadev@linux.vnet.ibm.com",
        "time": "Thu Apr 02 16:58:04 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Apr 02 19:04:58 2009 -0700"
      },
      "message": "signals: add from_ancestor_ns parameter to send_signal()\n\nsend_signal() (or its helper) needs to determine the pid namespace of the\nsender.  But a signal sent via kill_pid_info_as_uid() comes from within\nthe kernel and send_signal() does not need to determine the pid namespace\nof the sender.  So define a helper for send_signal() which takes an\nadditional parameter, \u0027from_ancestor_ns\u0027 and have kill_pid_info_as_uid()\nuse that helper directly.\n\nThe \u0027from_ancestor_ns\u0027 parameter will be used in a follow-on patch.\n\nSigned-off-by: Sukadev Bhattiprolu \u003csukadev@linux.vnet.ibm.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Daniel Lezcano \u003cdaniel.lezcano@free.fr\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "f008faff0e2777c8b3fe853891b774ca465938d8",
      "tree": "d2f325995473a33652f7f7ead71e63d5298fbd01",
      "parents": [
        "43918f2bf4806675943416d539d9d5e4d585ebff"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@redhat.com",
        "time": "Thu Apr 02 16:58:02 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Apr 02 19:04:58 2009 -0700"
      },
      "message": "signals: protect init from unwanted signals more\n\n(This is a modified version of the patch submitted by Oleg Nesterov\nhttp://lkml.org/lkml/2008/11/18/249 and tries to address comments that\ncame up in that discussion)\n\ninit ignores the SIG_DFL signals but we queue them anyway, including\nSIGKILL.  This is mostly OK, the signal will be dropped silently when\ndequeued, but the pending SIGKILL has 2 bad implications:\n\n        - it implies fatal_signal_pending(), so we confuse things\n          like wait_for_completion_killable/lock_page_killable.\n\n        - for the sub-namespace inits, the pending SIGKILL can\n          mask (legacy_queue) the subsequent SIGKILL from the\n          parent namespace which must kill cinit reliably.\n          (preparation, cinits don\u0027t have SIGNAL_UNKILLABLE yet)\n\nThe patch can\u0027t help when init is ptraced, but ptracing of init is not\n\"safe\" anyway.\n\nSigned-off-by: Sukadev Bhattiprolu \u003csukadev@linux.vnet.ibm.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Daniel Lezcano \u003cdaniel.lezcano@free.fr\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "43918f2bf4806675943416d539d9d5e4d585ebff",
      "tree": "1de2ea08eed647b181b7f008f95e4bc4ec34c343",
      "parents": [
        "90bc8d8b1a38f1ab131a2399a202e1889db95de8"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@redhat.com",
        "time": "Thu Apr 02 16:58:00 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Apr 02 19:04:58 2009 -0700"
      },
      "message": "signals: remove \u0027handler\u0027 parameter to tracehook functions\n\nContainer-init must behave like global-init to processes within the\ncontainer and hence it must be immune to unhandled fatal signals from\nwithin the container (i.e SIG_DFL signals that terminate the process).\n\nBut the same container-init must behave like a normal process to processes\nin ancestor namespaces and so if it receives the same fatal signal from a\nprocess in ancestor namespace, the signal must be processed.\n\nImplementing these semantics requires that send_signal() determine pid\nnamespace of the sender but since signals can originate from workqueues/\ninterrupt-handlers, determining pid namespace of sender may not always be\npossible or safe.\n\nThis patchset implements the design/simplified semantics suggested by\nOleg Nesterov.  The simplified semantics for container-init are:\n\n\t- container-init must never be terminated by a signal from a\n\t  descendant process.\n\n\t- container-init must never be immune to SIGKILL from an ancestor\n\t  namespace (so a process in parent namespace must always be able\n\t  to terminate a descendant container).\n\n\t- container-init may be immune to unhandled fatal signals (like\n\t  SIGUSR1) even if they are from ancestor namespace. SIGKILL/SIGSTOP\n\t  are the only reliable signals to a container-init from ancestor\n\t  namespace.\n\nThis patch:\n\nBased on an earlier patch submitted by Oleg Nesterov and comments from\nRoland McGrath (http://lkml.org/lkml/2008/11/19/258).\n\nThe handler parameter is currently unused in the tracehook functions.\nBesides, the tracehook functions are called with siglock held, so the\nfunctions can check the handler if they later need to.\n\nRemoving the parameter simiplifies changes to sig_ignored() in a follow-on\npatch.\n\nSigned-off-by: Sukadev Bhattiprolu \u003csukadev@linux.vnet.ibm.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Daniel Lezcano \u003cdaniel.lezcano@free.fr\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: \"H. Peter Anvin\" \u003chpa@zytor.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "53da1d9456fe7f87a920a78fdbdcf1225d197cb7",
      "tree": "eccd5357ceff25a9a07be802ac0161c8c1842e64",
      "parents": [
        "b0dcb4a91ddb79f2e213205cf8d86b467f8559c7"
      ],
      "author": {
        "name": "Miklos Szeredi",
        "email": "mszeredi@suse.cz",
        "time": "Mon Mar 23 16:07:24 2009 +0100"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Mar 23 09:22:31 2009 -0700"
      },
      "message": "fix ptrace slowness\n\nThis patch fixes bug #12208:\n\n  Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id\u003d12208\n  Subject         : uml is very slow on 2.6.28 host\n\nThis turned out to be not a scheduler regression, but an already\nexisting problem in ptrace being triggered by subtle scheduler\nchanges.\n\nThe problem is this:\n\n - task A is ptracing task B\n - task B stops on a trace event\n - task A is woken up and preempts task B\n - task A calls ptrace on task B, which does ptrace_check_attach()\n - this calls wait_task_inactive(), which sees that task B is still on the runq\n - task A goes to sleep for a jiffy\n - ...\n\nSince UML does lots of the above sequences, those jiffies quickly add\nup to make it slow as hell.\n\nThis patch solves this by not rescheduling in read_unlock() after\nptrace_stop() has woken up the tracer.\n\nThanks to Oleg Nesterov and Ingo Molnar for the feedback.\n\nSigned-off-by: Miklos Szeredi \u003cmszeredi@suse.cz\u003e\nCC: stable@kernel.org\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "32bd671d6cbeda60dc73be77fa2b9037d9a9bfa0",
      "tree": "591c941b9f12ce9f3caefd112f0ada3c5fcc53ab",
      "parents": [
        "83895147b702434e6f236deeca75211fd0e3da3a"
      ],
      "author": {
        "name": "Peter Zijlstra",
        "email": "a.p.zijlstra@chello.nl",
        "time": "Thu Feb 05 12:24:15 2009 +0100"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Thu Feb 05 13:04:33 2009 +0100"
      },
      "message": "signal: re-add dead task accumulation stats.\n\nWe\u0027re going to split the process wide cpu accounting into two parts:\n\n - clocks; which can take all the time they want since they run\n           from user context.\n\n - timers; which need constant time tracing but can affort the overhead\n           because they\u0027re default off -- and rare.\n\nThe clock readout will go back to a full sum of the thread group, for this\nwe need to re-add the exit stats that were removed in the initial itimer\nrework (f06febc9: timers: fix itimer/many thread hang).\n\nFurthermore, since that full sum can be rather slow for large thread groups\nand we have the complete dead task stats, revert the do_notify_parent time\ncomputation.\n\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nReviewed-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "3a9f84d354ce1e19956083c8e691727dea33bd5a",
      "tree": "abe8c280d3adb7a8e5fc838c59b122a46e6fd464",
      "parents": [
        "bf50c903faba4ec7686ee8a570ac384b0f20814d"
      ],
      "author": {
        "name": "Ed Swierk",
        "email": "eswierk@aristanetworks.com",
        "time": "Mon Jan 26 15:33:31 2009 -0800"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Tue Jan 27 00:36:19 2009 +0100"
      },
      "message": "signals, debug: fix BUG: using smp_processor_id() in preemptible code in print_fatal_signal()\n\nWith print-fatal-signals\u003d1 on a kernel with CONFIG_PREEMPT\u003dy, sending an\nunexpected signal to a process causes a BUG: using smp_processor_id() in\npreemptible code.\n\nget_signal_to_deliver() releases the siglock before calling\nprint_fatal_signal(), which calls show_regs(), which calls\nsmp_processor_id(), which is not supposed to be called from a\npreemptible thread.\n\nMake sure show_regs() runs with preemption disabled.\n\nSigned-off-by: Ed Swierk \u003ceswierk@aristanetworks.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "d4e82042c4cfa87a7d51710b71f568fe80132551",
      "tree": "202c311b52f4e4db9fbbbd80607744e2aa2e5885",
      "parents": [
        "836f92adf121f806e9beb5b6b88bd5c9c4ea3f24"
      ],
      "author": {
        "name": "Heiko Carstens",
        "email": "heiko.carstens@de.ibm.com",
        "time": "Wed Jan 14 14:14:34 2009 +0100"
      },
      "committer": {
        "name": "Heiko Carstens",
        "email": "heiko.carstens@de.ibm.com",
        "time": "Wed Jan 14 14:15:31 2009 +0100"
      },
      "message": "[CVE-2009-0029] System call wrappers part 32\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n"
    },
    {
      "commit": "a5f8fa9e9ba5ef3305e147f41ad6e1e84ac1f0bd",
      "tree": "a9bedc6890d6379f0839c280a20c5da3bd9f2352",
      "parents": [
        "17da2bd90abf428523de0fb98f7075e00e3ed42e"
      ],
      "author": {
        "name": "Heiko Carstens",
        "email": "heiko.carstens@de.ibm.com",
        "time": "Wed Jan 14 14:14:11 2009 +0100"
      },
      "committer": {
        "name": "Heiko Carstens",
        "email": "heiko.carstens@de.ibm.com",
        "time": "Wed Jan 14 14:15:21 2009 +0100"
      },
      "message": "[CVE-2009-0029] System call wrappers part 09\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n"
    },
    {
      "commit": "17da2bd90abf428523de0fb98f7075e00e3ed42e",
      "tree": "4f2daf3cb792b7da62e6ae771b58902cc5ea24ab",
      "parents": [
        "754fe8d297bfae7b77f7ce866e2fb0c5fb186506"
      ],
      "author": {
        "name": "Heiko Carstens",
        "email": "heiko.carstens@de.ibm.com",
        "time": "Wed Jan 14 14:14:10 2009 +0100"
      },
      "committer": {
        "name": "Heiko Carstens",
        "email": "heiko.carstens@de.ibm.com",
        "time": "Wed Jan 14 14:15:21 2009 +0100"
      },
      "message": "[CVE-2009-0029] System call wrappers part 08\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n"
    },
    {
      "commit": "754fe8d297bfae7b77f7ce866e2fb0c5fb186506",
      "tree": "b2650f728d50791fa86ecd8c49806f51db714bd4",
      "parents": [
        "5add95d4f7cf08f6f62510f19576992912387501"
      ],
      "author": {
        "name": "Heiko Carstens",
        "email": "heiko.carstens@de.ibm.com",
        "time": "Wed Jan 14 14:14:09 2009 +0100"
      },
      "committer": {
        "name": "Heiko Carstens",
        "email": "heiko.carstens@de.ibm.com",
        "time": "Wed Jan 14 14:15:20 2009 +0100"
      },
      "message": "[CVE-2009-0029] System call wrappers part 07\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n"
    },
    {
      "commit": "b290ebe2c46d01b742b948ce03f09e8a3efb9a92",
      "tree": "4419602f911a8205de2160c56a0ff844f350557e",
      "parents": [
        "ae1251ab785f6da87219df8352ffdac68bba23e4"
      ],
      "author": {
        "name": "Heiko Carstens",
        "email": "heiko.carstens@de.ibm.com",
        "time": "Wed Jan 14 14:14:06 2009 +0100"
      },
      "committer": {
        "name": "Heiko Carstens",
        "email": "heiko.carstens@de.ibm.com",
        "time": "Wed Jan 14 14:15:19 2009 +0100"
      },
      "message": "[CVE-2009-0029] System call wrappers part 04\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n"
    },
    {
      "commit": "2ed7c03ec17779afb4fcfa3b8c61df61bd4879ba",
      "tree": "4e0fefd574bab5470a02edf439727f472a9663c6",
      "parents": [
        "4c696ba7982501d43dea11dbbaabd2aa8a19cc42"
      ],
      "author": {
        "name": "Heiko Carstens",
        "email": "heiko.carstens@de.ibm.com",
        "time": "Wed Jan 14 14:13:54 2009 +0100"
      },
      "committer": {
        "name": "Heiko Carstens",
        "email": "heiko.carstens@de.ibm.com",
        "time": "Wed Jan 14 14:15:14 2009 +0100"
      },
      "message": "[CVE-2009-0029] Convert all system calls to return a long\n\nConvert all system calls to return a long. This should be a NOP since all\nconverted types should have the same size anyway.\nWith the exception of sys_exit_group which returned void. But that doesn\u0027t\nmatter since the system call doesn\u0027t return.\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n"
    },
    {
      "commit": "9cd4fd10437dda6b520cb1410b28f36967a34de8",
      "tree": "1a1d5eaa0d650c1efe0e63dbadb9674cac209d9d",
      "parents": [
        "09bca05c90c639f57aae057e0c28f287e61f5a07"
      ],
      "author": {
        "name": "Sukadev Bhattiprolu",
        "email": "sukadev@linux.vnet.ibm.com",
        "time": "Tue Jan 06 14:42:46 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Jan 06 15:59:29 2009 -0800"
      },
      "message": "SEND_SIG_NOINFO: set si_pid to tgid instead of pid\n\nPOSIX requires the si_pid to be the process id of the sender, so -\u003esi_pid\nshould really be set to \u0027tgid\u0027.  This change does have following changes\nin behavior:\n\n\t- When sending pdeath_signal on re-parent to a sub-thread, -\u003esi_pid\n\t  cannot be used to identify the thread that did the re-parent since\n\t  it will now show the tgid instead of thread id.\n\n\t- A multi-threaded application that expects to find the specific\n\t  thread that encountered a SIGPIPE using the -\u003esi_pid will now\n\t  break.\n\nSigned-off-by: Sukadev Bhattiprolu \u003csukadev@linux.vnet.ibm.com\u003e\nAcked-By: Roland McGrath \u003croland@redhat.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "09bca05c90c639f57aae057e0c28f287e61f5a07",
      "tree": "5a5d88930380da8994525da361c9c8114ebf82fc",
      "parents": [
        "ecb08d81313a3c015225236775de259d99ab47fe"
      ],
      "author": {
        "name": "Sukadev Bhattiprolu",
        "email": "sukadev@linux.vnet.ibm.com",
        "time": "Tue Jan 06 14:42:45 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Jan 06 15:59:28 2009 -0800"
      },
      "message": "SEND_SIG_NOINFO: masquerade si_pid when crossing pid-ns boundary\n\nFor SEND_SIG_NOINFO, si_pid is currently set to the pid of sender\nin sender\u0027s active pid namespace. But if the receiver is in a\nEg: when parent sends the \u0027pdeath_signal\u0027 to a child that is in\na descendant pid namespace, we should set si_pid 0.\n\nSigned-off-by: Sukadev Bhattiprolu \u003csukadev@linux.vnet.ibm.com\u003e\nAcked-By: Roland McGrath \u003croland@redhat.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "b0f4b285d7ed174804658539129a834270f4829a",
      "tree": "be7f8dca58075aba2c6a137fcfd4d44c5c333efc",
      "parents": [
        "be9c5ae4eeec2e85527e95647348b8ea4eb25128",
        "5250d329e38cdf7580faeb9c53c17d3588d7d19c"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sun Dec 28 12:21:10 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sun Dec 28 12:21:10 2008 -0800"
      },
      "message": "Merge branch \u0027tracing-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027tracing-core-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (241 commits)\n  sched, trace: update trace_sched_wakeup()\n  tracing/ftrace: don\u0027t trace on early stage of a secondary cpu boot, v3\n  Revert \"x86: disable X86_PTRACE_BTS\"\n  ring-buffer: prevent false positive warning\n  ring-buffer: fix dangling commit race\n  ftrace: enable format arguments checking\n  x86, bts: memory accounting\n  x86, bts: add fork and exit handling\n  ftrace: introduce tracing_reset_online_cpus() helper\n  tracing: fix warnings in kernel/trace/trace_sched_switch.c\n  tracing: fix warning in kernel/trace/trace.c\n  tracing/ring-buffer: remove unused ring_buffer size\n  trace: fix task state printout\n  ftrace: add not to regex on filtering functions\n  trace: better use of stack_trace_enabled for boot up code\n  trace: add a way to enable or disable the stack tracer\n  x86: entry_64 - introduce FTRACE_ frame macro v2\n  tracing/ftrace: add the printk-msg-only option\n  tracing/ftrace: use preempt_enable_no_resched_notrace in ring_buffer_time_stamp()\n  x86, bts: correctly report invalid bts records\n  ...\n\nFixed up trivial conflict in scripts/recordmcount.pl due to SH bits\nbeing already partly merged by the SH merge.\n"
    },
    {
      "commit": "7e066fb870fcd1025ec3ba7bbde5d541094f4ce1",
      "tree": "52acda06de25c029b9834110d7bf6b4abc50353b",
      "parents": [
        "32f85742778dfc2c74975cf0b9f5bdb13470cb32"
      ],
      "author": {
        "name": "Mathieu Desnoyers",
        "email": "mathieu.desnoyers@polymtl.ca",
        "time": "Fri Nov 14 17:47:47 2008 -0500"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Sun Nov 16 09:01:36 2008 +0100"
      },
      "message": "tracepoints: add DECLARE_TRACE() and DEFINE_TRACE()\n\nImpact: API *CHANGE*. Must update all tracepoint users.\n\nAdd DEFINE_TRACE() to tracepoints to let them declare the tracepoint\nstructure in a single spot for all the kernel. It helps reducing memory\nconsumption, especially when declaring a lot of tracepoints, e.g. for\nkmalloc tracing.\n\n*API CHANGE WARNING*: now, DECLARE_TRACE() must be used in headers for\ntracepoint declarations rather than DEFINE_TRACE(). This is the sane way\nto do it. The name previously used was misleading.\n\nUpdates scheduler instrumentation to follow this API change.\n\nSigned-off-by: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "d84f4f992cbd76e8f39c488cf0c5d123843923b1",
      "tree": "fc4a0349c42995715b93d0f7a3c78e9ea9b3f36e",
      "parents": [
        "745ca2475a6ac596e3d8d37c2759c0fbe2586227"
      ],
      "author": {
        "name": "David Howells",
        "email": "dhowells@redhat.com",
        "time": "Fri Nov 14 10:39:23 2008 +1100"
      },
      "committer": {
        "name": "James Morris",
        "email": "jmorris@namei.org",
        "time": "Fri Nov 14 10:39:23 2008 +1100"
      },
      "message": "CRED: Inaugurate COW credentials\n\nInaugurate copy-on-write credentials management.  This uses RCU to manage the\ncredentials pointer in the task_struct with respect to accesses by other tasks.\nA process may only modify its own credentials, and so does not need locking to\naccess or modify its own credentials.\n\nA mutex (cred_replace_mutex) is added to the task_struct to control the effect\nof PTRACE_ATTACHED on credential calculations, particularly with respect to\nexecve().\n\nWith this patch, the contents of an active credentials struct may not be\nchanged directly; rather a new set of credentials must be prepared, modified\nand committed using something like the following sequence of events:\n\n\tstruct cred *new \u003d prepare_creds();\n\tint ret \u003d blah(new);\n\tif (ret \u003c 0) {\n\t\tabort_creds(new);\n\t\treturn ret;\n\t}\n\treturn commit_creds(new);\n\nThere are some exceptions to this rule: the keyrings pointed to by the active\ncredentials may be instantiated - keyrings violate the COW rule as managing\nCOW keyrings is tricky, given that it is possible for a task to directly alter\nthe keys in a keyring in use by another task.\n\nTo help enforce this, various pointers to sets of credentials, such as those in\nthe task_struct, are declared const.  The purpose of this is compile-time\ndiscouragement of altering credentials through those pointers.  Once a set of\ncredentials has been made public through one of these pointers, it may not be\nmodified, except under special circumstances:\n\n  (1) Its reference count may incremented and decremented.\n\n  (2) The keyrings to which it points may be modified, but not replaced.\n\nThe only safe way to modify anything else is to create a replacement and commit\nusing the functions described in Documentation/credentials.txt (which will be\nadded by a later patch).\n\nThis patch and the preceding patches have been tested with the LTP SELinux\ntestsuite.\n\nThis patch makes several logical sets of alteration:\n\n (1) execve().\n\n     This now prepares and commits credentials in various places in the\n     security code rather than altering the current creds directly.\n\n (2) Temporary credential overrides.\n\n     do_coredump() and sys_faccessat() now prepare their own credentials and\n     temporarily override the ones currently on the acting thread, whilst\n     preventing interference from other threads by holding cred_replace_mutex\n     on the thread being dumped.\n\n     This will be replaced in a future patch by something that hands down the\n     credentials directly to the functions being called, rather than altering\n     the task\u0027s objective credentials.\n\n (3) LSM interface.\n\n     A number of functions have been changed, added or removed:\n\n     (*) security_capset_check(), -\u003ecapset_check()\n     (*) security_capset_set(), -\u003ecapset_set()\n\n     \t Removed in favour of security_capset().\n\n     (*) security_capset(), -\u003ecapset()\n\n     \t New.  This is passed a pointer to the new creds, a pointer to the old\n     \t creds and the proposed capability sets.  It should fill in the new\n     \t creds or return an error.  All pointers, barring the pointer to the\n     \t new creds, are now const.\n\n     (*) security_bprm_apply_creds(), -\u003ebprm_apply_creds()\n\n     \t Changed; now returns a value, which will cause the process to be\n     \t killed if it\u0027s an error.\n\n     (*) security_task_alloc(), -\u003etask_alloc_security()\n\n     \t Removed in favour of security_prepare_creds().\n\n     (*) security_cred_free(), -\u003ecred_free()\n\n     \t New.  Free security data attached to cred-\u003esecurity.\n\n     (*) security_prepare_creds(), -\u003ecred_prepare()\n\n     \t New. Duplicate any security data attached to cred-\u003esecurity.\n\n     (*) security_commit_creds(), -\u003ecred_commit()\n\n     \t New. Apply any security effects for the upcoming installation of new\n     \t security by commit_creds().\n\n     (*) security_task_post_setuid(), -\u003etask_post_setuid()\n\n     \t Removed in favour of security_task_fix_setuid().\n\n     (*) security_task_fix_setuid(), -\u003etask_fix_setuid()\n\n     \t Fix up the proposed new credentials for setuid().  This is used by\n     \t cap_set_fix_setuid() to implicitly adjust capabilities in line with\n     \t setuid() changes.  Changes are made to the new credentials, rather\n     \t than the task itself as in security_task_post_setuid().\n\n     (*) security_task_reparent_to_init(), -\u003etask_reparent_to_init()\n\n     \t Removed.  Instead the task being reparented to init is referred\n     \t directly to init\u0027s credentials.\n\n\t NOTE!  This results in the loss of some state: SELinux\u0027s osid no\n\t longer records the sid of the thread that forked it.\n\n     (*) security_key_alloc(), -\u003ekey_alloc()\n     (*) security_key_permission(), -\u003ekey_permission()\n\n     \t Changed.  These now take cred pointers rather than task pointers to\n     \t refer to the security context.\n\n (4) sys_capset().\n\n     This has been simplified and uses less locking.  The LSM functions it\n     calls have been merged.\n\n (5) reparent_to_kthreadd().\n\n     This gives the current thread the same credentials as init by simply using\n     commit_thread() to point that way.\n\n (6) __sigqueue_alloc() and switch_uid()\n\n     __sigqueue_alloc() can\u0027t stop the target task from changing its creds\n     beneath it, so this function gets a reference to the currently applicable\n     user_struct which it then passes into the sigqueue struct it returns if\n     successful.\n\n     switch_uid() is now called from commit_creds(), and possibly should be\n     folded into that.  commit_creds() should take care of protecting\n     __sigqueue_alloc().\n\n (7) [sg]et[ug]id() and co and [sg]et_current_groups.\n\n     The set functions now all use prepare_creds(), commit_creds() and\n     abort_creds() to build and check a new set of credentials before applying\n     it.\n\n     security_task_set[ug]id() is called inside the prepared section.  This\n     guarantees that nothing else will affect the creds until we\u0027ve finished.\n\n     The calling of set_dumpable() has been moved into commit_creds().\n\n     Much of the functionality of set_user() has been moved into\n     commit_creds().\n\n     The get functions all simply access the data directly.\n\n (8) security_task_prctl() and cap_task_prctl().\n\n     security_task_prctl() has been modified to return -ENOSYS if it doesn\u0027t\n     want to handle a function, or otherwise return the return value directly\n     rather than through an argument.\n\n     Additionally, cap_task_prctl() now prepares a new set of credentials, even\n     if it doesn\u0027t end up using it.\n\n (9) Keyrings.\n\n     A number of changes have been made to the keyrings code:\n\n     (a) switch_uid_keyring(), copy_keys(), exit_keys() and suid_keys() have\n     \t all been dropped and built in to the credentials functions directly.\n     \t They may want separating out again later.\n\n     (b) key_alloc() and search_process_keyrings() now take a cred pointer\n     \t rather than a task pointer to specify the security context.\n\n     (c) copy_creds() gives a new thread within the same thread group a new\n     \t thread keyring if its parent had one, otherwise it discards the thread\n     \t keyring.\n\n     (d) The authorisation key now points directly to the credentials to extend\n     \t the search into rather pointing to the task that carries them.\n\n     (e) Installing thread, process or session keyrings causes a new set of\n     \t credentials to be created, even though it\u0027s not strictly necessary for\n     \t process or session keyrings (they\u0027re shared).\n\n(10) Usermode helper.\n\n     The usermode helper code now carries a cred struct pointer in its\n     subprocess_info struct instead of a new session keyring pointer.  This set\n     of credentials is derived from init_cred and installed on the new process\n     after it has been cloned.\n\n     call_usermodehelper_setup() allocates the new credentials and\n     call_usermodehelper_freeinfo() discards them if they haven\u0027t been used.  A\n     special cred function (prepare_usermodeinfo_creds()) is provided\n     specifically for call_usermodehelper_setup() to call.\n\n     call_usermodehelper_setkeys() adjusts the credentials to sport the\n     supplied keyring as the new session keyring.\n\n(11) SELinux.\n\n     SELinux has a number of changes, in addition to those to support the LSM\n     interface changes mentioned above:\n\n     (a) selinux_setprocattr() no longer does its check for whether the\n     \t current ptracer can access processes with the new SID inside the lock\n     \t that covers getting the ptracer\u0027s SID.  Whilst this lock ensures that\n     \t the check is done with the ptracer pinned, the result is only valid\n     \t until the lock is released, so there\u0027s no point doing it inside the\n     \t lock.\n\n(12) is_single_threaded().\n\n     This function has been extracted from selinux_setprocattr() and put into\n     a file of its own in the lib/ directory as join_session_keyring() now\n     wants to use it too.\n\n     The code in SELinux just checked to see whether a task shared mm_structs\n     with other tasks (CLONE_VM), but that isn\u0027t good enough.  We really want\n     to know if they\u0027re part of the same thread group (CLONE_THREAD).\n\n(13) nfsd.\n\n     The NFS server daemon now has to use the COW credentials to set the\n     credentials it is going to use.  It really needs to pass the credentials\n     down to the functions it calls, but it can\u0027t do that until other patches\n     in this series have been applied.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: James Morris \u003cjmorris@namei.org\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n"
    },
    {
      "commit": "c69e8d9c01db2adc503464993c358901c9af9de4",
      "tree": "bed94aaa9aeb7a7834d1c880f72b62a11a752c78",
      "parents": [
        "86a264abe542cfececb4df129bc45a0338d8cdb9"
      ],
      "author": {
        "name": "David Howells",
        "email": "dhowells@redhat.com",
        "time": "Fri Nov 14 10:39:19 2008 +1100"
      },
      "committer": {
        "name": "James Morris",
        "email": "jmorris@namei.org",
        "time": "Fri Nov 14 10:39:19 2008 +1100"
      },
      "message": "CRED: Use RCU to access another task\u0027s creds and to release a task\u0027s own creds\n\nUse RCU to access another task\u0027s creds and to release a task\u0027s own creds.\nThis means that it will be possible for the credentials of a task to be\nreplaced without another task (a) requiring a full lock to read them, and (b)\nseeing deallocated memory.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: James Morris \u003cjmorris@namei.org\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n"
    },
    {
      "commit": "b6dff3ec5e116e3af6f537d4caedcad6b9e5082a",
      "tree": "9e76f972eb7ce9b84e0146c8e4126a3f86acb428",
      "parents": [
        "15a2460ed0af7538ca8e6c610fe607a2cd9da142"
      ],
      "author": {
        "name": "David Howells",
        "email": "dhowells@redhat.com",
        "time": "Fri Nov 14 10:39:16 2008 +1100"
      },
      "committer": {
        "name": "James Morris",
        "email": "jmorris@namei.org",
        "time": "Fri Nov 14 10:39:16 2008 +1100"
      },
      "message": "CRED: Separate task security context from task_struct\n\nSeparate the task security context from task_struct.  At this point, the\nsecurity data is temporarily embedded in the task_struct with two pointers\npointing to it.\n\nNote that the Alpha arch is altered as it refers to (E)UID and (E)GID in\nentry.S via asm-offsets.\n\nWith comment fixes Signed-off-by: Marc Dionne \u003cmarc.c.dionne@gmail.com\u003e\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: James Morris \u003cjmorris@namei.org\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n"
    },
    {
      "commit": "76aac0e9a17742e60d408be1a706e9aaad370891",
      "tree": "e873a000d9c96209726e0958e311f005c13b2ed5",
      "parents": [
        "b103c59883f1ec6e4d548b25054608cb5724453c"
      ],
      "author": {
        "name": "David Howells",
        "email": "dhowells@redhat.com",
        "time": "Fri Nov 14 10:39:12 2008 +1100"
      },
      "committer": {
        "name": "James Morris",
        "email": "jmorris@namei.org",
        "time": "Fri Nov 14 10:39:12 2008 +1100"
      },
      "message": "CRED: Wrap task credential accesses in the core kernel\n\nWrap access to task credentials so that they can be separated more easily from\nthe task_struct during the introduction of COW creds.\n\nChange most current-\u003e(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id().\n\nChange some task-\u003ee?[ug]id to task_e?[ug]id().  In some places it makes more\nsense to use RCU directly rather than a convenient wrapper; these will be\naddressed by later patches.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nReviewed-by: James Morris \u003cjmorris@namei.org\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: linux-audit@redhat.com\nCc: containers@lists.linux-foundation.org\nCc: linux-mm@kvack.org\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n"
    },
    {
      "commit": "d25141a818383b3c3b09f065698c544a7a0ec6e7",
      "tree": "fb2f868b42ccdde710ddf426e1c90f8ffcc83368",
      "parents": [
        "e74481e23283fb080d4591c258de20785cc3b6c3"
      ],
      "author": {
        "name": "Sukadev Bhattiprolu",
        "email": "sukadev@linux.vnet.ibm.com",
        "time": "Wed Oct 29 14:01:11 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Oct 30 11:38:46 2008 -0700"
      },
      "message": "\u0027kill sig -1\u0027 must only apply to caller\u0027s namespace\n\nCurrently \"kill \u003csig\u003e -1\" kills processes in all namespaces and breaks the\nisolation of namespaces.  Earlier attempt to fix this was discussed at:\n\n\thttp://lkml.org/lkml/2008/7/23/148\n\nAs suggested by Oleg Nesterov in that thread, use \"task_pid_vnr() \u003e 1\"\ncheck since task_pid_vnr() returns 0 if process is outside the caller\u0027s\nnamespace.\n\nSigned-off-by: Sukadev Bhattiprolu \u003csukadev@linux.vnet.ibm.com\u003e\nAcked-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nTested-by: Daniel Hokka Zakrisson \u003cdaniel@hozac.com\u003e\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "92b29b86fe2e183d44eb467e5e74a5f718ef2e43",
      "tree": "1bac8a1aa11d47322b66d10ec3a370016d843d06",
      "parents": [
        "b9d7ccf56be1ac77b71a284a1c0e6337f9a7aff0",
        "98d9c66ab07471006fd7910cb16453581c41a3e7"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Oct 20 13:35:07 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Oct 20 13:35:07 2008 -0700"
      },
      "message": "Merge branch \u0027tracing-v28-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027tracing-v28-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (131 commits)\n  tracing/fastboot: improve help text\n  tracing/stacktrace: improve help text\n  tracing/fastboot: fix initcalls disposition in bootgraph.pl\n  tracing/fastboot: fix bootgraph.pl initcall name regexp\n  tracing/fastboot: fix issues and improve output of bootgraph.pl\n  tracepoints: synchronize unregister static inline\n  tracepoints: tracepoint_synchronize_unregister()\n  ftrace: make ftrace_test_p6nop disassembler-friendly\n  markers: fix synchronize marker unregister static inline\n  tracing/fastboot: add better resolution to initcall debug/tracing\n  trace: add build-time check to avoid overrunning hex buffer\n  ftrace: fix hex output mode of ftrace\n  tracing/fastboot: fix initcalls disposition in bootgraph.pl\n  tracing/fastboot: fix printk format typo in boot tracer\n  ftrace: return an error when setting a nonexistent tracer\n  ftrace: make some tracers reentrant\n  ring-buffer: make reentrant\n  ring-buffer: move page indexes into page headers\n  tracing/fastboot: only trace non-module initcalls\n  ftrace: move pc counter in irqtrace\n  ...\n\nManually fix conflicts:\n - init/main.c: initcall tracing\n - kernel/module.c: verbose level vs tracepoints\n - scripts/bootgraph.pl: fallout from cherry-picking commits.\n"
    },
    {
      "commit": "0a16b6075843325dc402edf80c1662838b929aff",
      "tree": "124e49d8c0196f3c6eb7aa09a7c4c3c3157fff7a",
      "parents": [
        "4a0897526bbc5c6ac0df80b16b8c60339e717ae2"
      ],
      "author": {
        "name": "Mathieu Desnoyers",
        "email": "mathieu.desnoyers@polymtl.ca",
        "time": "Fri Jul 18 12:16:17 2008 -0400"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Tue Oct 14 10:30:52 2008 +0200"
      },
      "message": "tracing, sched: LTTng instrumentation - scheduler\n\nInstrument the scheduler activity (sched_switch, migration, wakeups,\nwait for a task, signal delivery) and process/thread\ncreation/destruction (fork, exit, kthread stop). Actually, kthread\ncreation is not instrumented in this patch because it is architecture\ndependent. It allows to connect tracers such as ftrace which detects\nscheduling latencies, good/bad scheduler decisions. Tools like LTTng can\nexport this scheduler information along with instrumentation of the rest\nof the kernel activity to perform post-mortem analysis on the scheduler\nactivity.\n\nAbout the performance impact of tracepoints (which is comparable to\nmarkers), even without immediate values optimizations, tests done by\nHideo Aoki on ia64 show no regression. His test case was using hackbench\non a kernel where scheduler instrumentation (about 5 events in code\nscheduler code) was added. See the \"Tracepoints\" patch header for\nperformance result detail.\n\nChangelog :\n\n- Change instrumentation location and parameter to match ftrace\n  instrumentation, previously done with kernel markers.\n\n[ mingo@elte.hu: conflict resolutions ]\nSigned-off-by: Mathieu Desnoyers \u003cmathieu.desnoyers@polymtl.ca\u003e\nAcked-by: \u0027Peter Zijlstra\u0027 \u003cpeterz@infradead.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "f06febc96ba8e0af80bcc3eaec0a109e88275fac",
      "tree": "46dba9432ef25d2eae9434ff2df638c7a268c0f1",
      "parents": [
        "6bfb09a1005193be5c81ebac9f3ef85210142650"
      ],
      "author": {
        "name": "Frank Mayhar",
        "email": "fmayhar@google.com",
        "time": "Fri Sep 12 09:54:39 2008 -0700"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Sun Sep 14 16:25:35 2008 +0200"
      },
      "message": "timers: fix itimer/many thread hang\n\nOverview\n\nThis patch reworks the handling of POSIX CPU timers, including the\nITIMER_PROF, ITIMER_VIRT timers and rlimit handling.  It was put together\nwith the help of Roland McGrath, the owner and original writer of this code.\n\nThe problem we ran into, and the reason for this rework, has to do with using\na profiling timer in a process with a large number of threads.  It appears\nthat the performance of the old implementation of run_posix_cpu_timers() was\nat least O(n*3) (where \"n\" is the number of threads in a process) or worse.\nEverything is fine with an increasing number of threads until the time taken\nfor that routine to run becomes the same as or greater than the tick time, at\nwhich point things degrade rather quickly.\n\nThis patch fixes bug 9906, \"Weird hang with NPTL and SIGPROF.\"\n\nCode Changes\n\nThis rework corrects the implementation of run_posix_cpu_timers() to make it\nrun in constant time for a particular machine.  (Performance may vary between\none machine and another depending upon whether the kernel is built as single-\nor multiprocessor and, in the latter case, depending upon the number of\nrunning processors.)  To do this, at each tick we now update fields in\nsignal_struct as well as task_struct.  The run_posix_cpu_timers() function\nuses those fields to make its decisions.\n\nWe define a new structure, \"task_cputime,\" to contain user, system and\nscheduler times and use these in appropriate places:\n\nstruct task_cputime {\n\tcputime_t utime;\n\tcputime_t stime;\n\tunsigned long long sum_exec_runtime;\n};\n\nThis is included in the structure \"thread_group_cputime,\" which is a new\nsubstructure of signal_struct and which varies for uniprocessor versus\nmultiprocessor kernels.  For uniprocessor kernels, it uses \"task_cputime\" as\na simple substructure, while for multiprocessor kernels it is a pointer:\n\nstruct thread_group_cputime {\n\tstruct task_cputime totals;\n};\n\nstruct thread_group_cputime {\n\tstruct task_cputime *totals;\n};\n\nWe also add a new task_cputime substructure directly to signal_struct, to\ncache the earliest expiration of process-wide timers, and task_cputime also\nreplaces the it_*_expires fields of task_struct (used for earliest expiration\nof thread timers).  The \"thread_group_cputime\" structure contains process-wide\ntimers that are updated via account_user_time() and friends.  In the non-SMP\ncase the structure is a simple aggregator; unfortunately in the SMP case that\nsimplicity was not achievable due to cache-line contention between CPUs (in\none measured case performance was actually _worse_ on a 16-cpu system than\nthe same test on a 4-cpu system, due to this contention).  For SMP, the\nthread_group_cputime counters are maintained as a per-cpu structure allocated\nusing alloc_percpu().  The timer functions update only the timer field in\nthe structure corresponding to the running CPU, obtained using per_cpu_ptr().\n\nWe define a set of inline functions in sched.h that we use to maintain the\nthread_group_cputime structure and hide the differences between UP and SMP\nimplementations from the rest of the kernel.  The thread_group_cputime_init()\nfunction initializes the thread_group_cputime structure for the given task.\nThe thread_group_cputime_alloc() is a no-op for UP; for SMP it calls the\nout-of-line function thread_group_cputime_alloc_smp() to allocate and fill\nin the per-cpu structures and fields.  The thread_group_cputime_free()\nfunction, also a no-op for UP, in SMP frees the per-cpu structures.  The\nthread_group_cputime_clone_thread() function (also a UP no-op) for SMP calls\nthread_group_cputime_alloc() if the per-cpu structures haven\u0027t yet been\nallocated.  The thread_group_cputime() function fills the task_cputime\nstructure it is passed with the contents of the thread_group_cputime fields;\nin UP it\u0027s that simple but in SMP it must also safely check that tsk-\u003esignal\nis non-NULL (if it is it just uses the appropriate fields of task_struct) and,\nif so, sums the per-cpu values for each online CPU.  Finally, the three\nfunctions account_group_user_time(), account_group_system_time() and\naccount_group_exec_runtime() are used by timer functions to update the\nrespective fields of the thread_group_cputime structure.\n\nNon-SMP operation is trivial and will not be mentioned further.\n\nThe per-cpu structure is always allocated when a task creates its first new\nthread, via a call to thread_group_cputime_clone_thread() from copy_signal().\nIt is freed at process exit via a call to thread_group_cputime_free() from\ncleanup_signal().\n\nAll functions that formerly summed utime/stime/sum_sched_runtime values from\nfrom all threads in the thread group now use thread_group_cputime() to\nsnapshot the values in the thread_group_cputime structure or the values in\nthe task structure itself if the per-cpu structure hasn\u0027t been allocated.\n\nFinally, the code in kernel/posix-cpu-timers.c has changed quite a bit.\nThe run_posix_cpu_timers() function has been split into a fast path and a\nslow path; the former safely checks whether there are any expired thread\ntimers and, if not, just returns, while the slow path does the heavy lifting.\nWith the dedicated thread group fields, timers are no longer \"rebalanced\" and\nthe process_timer_rebalance() function and related code has gone away.  All\nsumming loops are gone and all code that used them now uses the\nthread_group_cputime() inline.  When process-wide timers are set, the new\ntask_cputime structure in signal_struct is used to cache the earliest\nexpiration; this is checked in the fast path.\n\nPerformance\n\nThe fix appears not to add significant overhead to existing operations.  It\ngenerally performs the same as the current code except in two cases, one in\nwhich it performs slightly worse (Case 5 below) and one in which it performs\nvery significantly better (Case 2 below).  Overall it\u0027s a wash except in those\ntwo cases.\n\nI\u0027ve since done somewhat more involved testing on a dual-core Opteron system.\n\nCase 1: With no itimer running, for a test with 100,000 threads, the fixed\n\tkernel took 1428.5 seconds, 513 seconds more than the unfixed system,\n\tall of which was spent in the system.  There were twice as many\n\tvoluntary context switches with the fix as without it.\n\nCase 2: With an itimer running at .01 second ticks and 4000 threads (the most\n\tan unmodified kernel can handle), the fixed kernel ran the test in\n\teight percent of the time (5.8 seconds as opposed to 70 seconds) and\n\thad better tick accuracy (.012 seconds per tick as opposed to .023\n\tseconds per tick).\n\nCase 3: A 4000-thread test with an initial timer tick of .01 second and an\n\tinterval of 10,000 seconds (i.e. a timer that ticks only once) had\n\tvery nearly the same performance in both cases:  6.3 seconds elapsed\n\tfor the fixed kernel versus 5.5 seconds for the unfixed kernel.\n\nWith fewer threads (eight in these tests), the Case 1 test ran in essentially\nthe same time on both the modified and unmodified kernels (5.2 seconds versus\n5.8 seconds).  The Case 2 test ran in about the same time as well, 5.9 seconds\nversus 5.4 seconds but again with much better tick accuracy, .013 seconds per\ntick versus .025 seconds per tick for the unmodified kernel.\n\nSince the fix affected the rlimit code, I also tested soft and hard CPU limits.\n\nCase 4: With a hard CPU limit of 20 seconds and eight threads (and an itimer\n\trunning), the modified kernel was very slightly favored in that while\n\tit killed the process in 19.997 seconds of CPU time (5.002 seconds of\n\twall time), only .003 seconds of that was system time, the rest was\n\tuser time.  The unmodified kernel killed the process in 20.001 seconds\n\tof CPU (5.014 seconds of wall time) of which .016 seconds was system\n\ttime.  Really, though, the results were too close to call.  The results\n\twere essentially the same with no itimer running.\n\nCase 5: With a soft limit of 20 seconds and a hard limit of 2000 seconds\n\t(where the hard limit would never be reached) and an itimer running,\n\tthe modified kernel exhibited worse tick accuracy than the unmodified\n\tkernel: .050 seconds/tick versus .028 seconds/tick.  Otherwise,\n\tperformance was almost indistinguishable.  With no itimer running this\n\ttest exhibited virtually identical behavior and times in both cases.\n\nIn times past I did some limited performance testing.  those results are below.\n\nOn a four-cpu Opteron system without this fix, a sixteen-thread test executed\nin 3569.991 seconds, of which user was 3568.435s and system was 1.556s.  On\nthe same system with the fix, user and elapsed time were about the same, but\nsystem time dropped to 0.007 seconds.  Performance with eight, four and one\nthread were comparable.  Interestingly, the timer ticks with the fix seemed\nmore accurate:  The sixteen-thread test with the fix received 149543 ticks\nfor 0.024 seconds per tick, while the same test without the fix received 58720\nfor 0.061 seconds per tick.  Both cases were configured for an interval of\n0.01 seconds.  Again, the other tests were comparable.  Each thread in this\ntest computed the primes up to 25,000,000.\n\nI also did a test with a large number of threads, 100,000 threads, which is\nimpossible without the fix.  In this case each thread computed the primes only\nup to 10,000 (to make the runtime manageable).  System time dominated, at\n1546.968 seconds out of a total 2176.906 seconds (giving a user time of\n629.938s).  It received 147651 ticks for 0.015 seconds per tick, still quite\naccurate.  There is obviously no comparable test without the fix.\n\nSigned-off-by: Frank Mayhar \u003cfmayhar@google.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n"
    },
    {
      "commit": "1b04624f93bb1c4f9495b8476d1dd0200af019e2",
      "tree": "aa64cc4706f5dc396b1e9a74ce951b29aa294964",
      "parents": [
        "1fca25427482387689fa27594c992a961d98768f"
      ],
      "author": {
        "name": "Roland McGrath",
        "email": "roland@redhat.com",
        "time": "Tue Aug 19 20:37:07 2008 -0700"
      },
      "committer": {
        "name": "Roland McGrath",
        "email": "roland@redhat.com",
        "time": "Tue Aug 19 20:37:07 2008 -0700"
      },
      "message": "tracehook: fix SA_NOCLDWAIT\n\nI outwitted myself again in commit 2b2a1ff64afbadac842bbc58c5166962cf4f7664,\nand broke the SA_NOCLDWAIT behavior so it leaks zombies.  This fixes it.\n\nReported-by: Andi Kleen \u003candi@firstfloor.org\u003e\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\n"
    },
    {
      "commit": "67a077dca4e648a662e32cbeaaba8094d2e30229",
      "tree": "2f8943838b73b0a8ea590b1aaad9294eb280ea1e",
      "parents": [
        "9b4d0bab32e18e4f72781f9fa309a81495b2aff3",
        "2106b531eaa2edd0c2dfa735a0556c08c7ba3c86"
      ],
      "author": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Aug 11 16:46:11 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon Aug 11 16:46:11 2008 -0700"
      },
      "message": "Merge branch \u0027timers-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027timers-fixes-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n  posix-timers: fix posix_timer_event() vs dequeue_signal() race\n  posix-timers: do_schedule_next_timer: fix the setting of -\u003esi_overrun\n"
    },
    {
      "commit": "2106b531eaa2edd0c2dfa735a0556c08c7ba3c86",
      "tree": "423fcf0ac74f0dd5d88864b7bd99a1160129e064",
      "parents": [
        "e338125b8a886923ba8367207c144764dc352584",
        "ba661292a2bc6ddd305a212b0526e5dc22195fe7"
      ],
      "author": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Sun Jul 27 23:15:26 2008 +0200"
      },
      "committer": {
        "name": "Ingo Molnar",
        "email": "mingo@elte.hu",
        "time": "Sun Jul 27 23:15:26 2008 +0200"
      },
      "message": "Merge branch \u0027timers/urgent\u0027 of ssh://master.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip into timers/urgent\n"
    },
    {
      "commit": "b787f7ba677840da16a2228c16571ce8a1fcb799",
      "tree": "b1838c4ae7f38c00efc2375871a255275500f245",
      "parents": [
        "2b2a1ff64afbadac842bbc58c5166962cf4f7664"
      ],
      "author": {
        "name": "Roland McGrath",
        "email": "roland@redhat.com",
        "time": "Fri Jul 25 19:45:55 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Jul 26 12:00:09 2008 -0700"
      },
      "message": "tracehook: force signal_pending()\n\nThis defines a new hook tracehook_force_sigpending() that lets tracing\ncode decide to force TIF_SIGPENDING on in recalc_sigpending().\n\nThis is not used yet, so it compiles away to nothing for now.  It lays the\ngroundwork for new tracing code that can interrupt a task synthetically\nwithout actually sending a signal.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nReviewed-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "2b2a1ff64afbadac842bbc58c5166962cf4f7664",
      "tree": "660640eb95117ce6f7436331f23f73805abced10",
      "parents": [
        "fa00b80b3c41a845b3d56f866fb40a2e98754c51"
      ],
      "author": {
        "name": "Roland McGrath",
        "email": "roland@redhat.com",
        "time": "Fri Jul 25 19:45:54 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Jul 26 12:00:09 2008 -0700"
      },
      "message": "tracehook: death\n\nThis moves the ptrace logic in task death (exit_notify) into tracehook.h\ninlines.  Some code is rearranged slightly to make things nicer.  There is\nno change, only cleanup.\n\nThere is one hook called with the tasklist_lock write-locked, as ptrace\nneeds.  There is also a new hook called after exit_state changes and\nwithout locks.  This is a better place for tracing work to be in the\nfuture, since it doesn\u0027t delay the whole system with locking.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nReviewed-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "fa00b80b3c41a845b3d56f866fb40a2e98754c51",
      "tree": "819d6966cad1fdeef3f32497c696afb203e3720b",
      "parents": [
        "7bcf6a2ca5f639b038c48711ebe6c4eca2036641"
      ],
      "author": {
        "name": "Roland McGrath",
        "email": "roland@redhat.com",
        "time": "Fri Jul 25 19:45:54 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Jul 26 12:00:09 2008 -0700"
      },
      "message": "tracehook: job control\n\nThis defines the tracehook_notify_jctl() hook to formalize the ptrace\neffects on the job control notifications.  There is no change, only\ncleanup.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nReviewed-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "7bcf6a2ca5f639b038c48711ebe6c4eca2036641",
      "tree": "4219a0725d581310f729d4616361febd700f0574",
      "parents": [
        "283d7559e7712f95a05331eb0a85394c6368101b"
      ],
      "author": {
        "name": "Roland McGrath",
        "email": "roland@redhat.com",
        "time": "Fri Jul 25 19:45:53 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Jul 26 12:00:09 2008 -0700"
      },
      "message": "tracehook: get_signal_to_deliver\n\nThis defines the tracehook_get_signal() hook to allow tracing code to slip\nin before normal signal dequeuing.  This lays the groundwork for new\ntracing features that can inject synthetic signals outside the normal\nqueue or control the disposition of delivered signals.  The calling\nconvention lets tracehook_get_signal() decide both exactly what will\nhappen and what signal number to report in the handler/exit.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nReviewed-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "445a91d2fe3667fb8fc251433645f686933cf56a",
      "tree": "496f0715ba3079f3bf98e9808480fe7f25872b16",
      "parents": [
        "35de254dc60f91004b3b5ebb1fc7b2c3093d6032"
      ],
      "author": {
        "name": "Roland McGrath",
        "email": "roland@redhat.com",
        "time": "Fri Jul 25 19:45:52 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Jul 26 12:00:09 2008 -0700"
      },
      "message": "tracehook: tracehook_consider_fatal_signal\n\nThis defines tracehook_consider_fatal_signal() has a fine-grained hook for\ndeciding to skip the special cases for a fatal signal, as ptrace does.\nThere is no change, only cleanup.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nReviewed-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "35de254dc60f91004b3b5ebb1fc7b2c3093d6032",
      "tree": "101e174247bb3174c8abe0fb8d1405ed6a4db6d1",
      "parents": [
        "c45aea27617d6a1e0aacddc3b0233f704222fcbd"
      ],
      "author": {
        "name": "Roland McGrath",
        "email": "roland@redhat.com",
        "time": "Fri Jul 25 19:45:51 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Jul 26 12:00:09 2008 -0700"
      },
      "message": "tracehook: tracehook_consider_ignored_signal\n\nThis defines tracehook_consider_ignored_signal() has a fine-grained hook\nfor deciding to prevent the normal short-circuit of sending an ignored\nsignal, as ptrace does.  There is no change, only cleanup.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nReviewed-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "ff1188646c6870f336e910fb894eeed74f50471f",
      "tree": "7e0c7ecad4ab3f9c2f20540b289b4cd932453e67",
      "parents": [
        "6341c393fcc37d58727865f1ee2f65e632e9d4f0"
      ],
      "author": {
        "name": "Roland McGrath",
        "email": "roland@redhat.com",
        "time": "Fri Jul 25 19:45:45 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat Jul 26 12:00:08 2008 -0700"
      },
      "message": "tracehook: unexport ptrace_notify\n\nThe ptrace_notify() function should not be called by any modules.  It was\nonly ever exported to be called by binfmt exec functions.  But that is no\nlonger necessary since fs/exec.c deals with that generically now.  There\nshould be no calls to ptrace_notify() from outside the core kernel.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nReviewed-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "19b0cfcca41dd772065671ad0584e1cea0f3fd13",
      "tree": "6a8a627e2e2f3f26b02fc4228517c421e66a8043",
      "parents": [
        "33166b1ffca5e1945246bcaa77d72a22b0d3e531"
      ],
      "author": {
        "name": "Pavel Emelyanov",
        "email": "xemul@openvz.org",
        "time": "Fri Jul 25 01:48:35 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Jul 25 10:53:45 2008 -0700"
      },
      "message": "pidns: remove now unused kill_proc function\n\nThis function operated on a pid_t to kill a task, which is no longer valid\nin a containerized system.\n\nIt has finally lost all its users and we can safely remove it from the\ntree.\n\nSigned-off-by: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "999d9fc1670bc082928b93b11d1f2e0e417d973c",
      "tree": "e540e7fd2fab970ba2be5e39ac9f8282a373bc24",
      "parents": [
        "32ecb1f26dd50eeaac4e3f4dea4541c97848e459"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Fri Jul 25 01:47:41 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Jul 25 10:53:39 2008 -0700"
      },
      "message": "coredump: move mm-\u003ecore_waiters into struct core_state\n\nMove mm-\u003ecore_waiters into \"struct core_state\" allocated on stack.  This\nshrinks mm_struct a little bit and allows further changes.\n\nThis patch mostly does s/core_waiters/core_state.  The only essential\nchange is that coredump_wait() must clear mm-\u003ecore_state before return.\n\nThe coredump_wait()\u0027s path is uglified and .text grows by 30 bytes, this\nis fixed by the next patch.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "3d749b9e676b26584a47e75c235aa6f69d0697ae",
      "tree": "2db2dab84cde07c4872ac5e8d4078f2a3fc4271d",
      "parents": [
        "364d3c13c17f45da6d638011078d4c4d3070d719"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Fri Jul 25 01:47:37 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Jul 25 10:53:39 2008 -0700"
      },
      "message": "ptrace: simplify ptrace_stop()-\u003esigkill_pending() path\n\n1. SIGKILL can\u0027t be blocked, remove this check from sigkill_pending().\n\n2. When ptrace_stop() sees sigkill_pending() \u003d\u003d T, it can just return.\n   Kill \"int killed\" and simplify the code. This also is more correct,\n   the tracer shouldn\u0027t see us in TASK_TRACED if we are not going to\n   stop.\n\nI strongly believe this code needs further changes.  We should do the \"was\nthis task killed\" check unconditionally, currently it depends on\narch_ptrace_stop_needed().  On the other hand, sigkill_pending() isn\u0027t\nvery clever.  If the task was killed tkill(SIGKILL), the signal can be\nalready dequeued if the caller is do_exit().\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "bc64efd220dcd4449aef8dd2564d73127b583b09",
      "tree": "21739809b2ab9b13677cae99f175c3983114abc6",
      "parents": [
        "d8878ba3f05ae5bbfad5a6e72e5121c0ea35f989"
      ],
      "author": {
        "name": "Gustavo Fernando Padovan",
        "email": "gustavo@las.ic.unicamp.br",
        "time": "Fri Jul 25 01:47:33 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Jul 25 10:53:39 2008 -0700"
      },
      "message": "kernel/signal.c: change vars pid and tgid types to pid_t\n\nChange the type of pid and tgid variables from int to the POSIX type\npid_t.\n\nSigned-off-by: Gustavo F. Padovan \u003cgustavo@las.ic.unicamp.br\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "d8878ba3f05ae5bbfad5a6e72e5121c0ea35f989",
      "tree": "31fbf7bd9605c103d8ef9e538beb54da8df04540",
      "parents": [
        "e4901f92a8dbe843e76651a50f7a2a6dd3d53474"
      ],
      "author": {
        "name": "Michael Kerrisk",
        "email": "mtk.manpages@googlemail.com",
        "time": "Fri Jul 25 01:47:32 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Jul 25 10:53:39 2008 -0700"
      },
      "message": "signals: make siginfo_t si_utime + si_sstime report times in USER_HZ, not HZ\n\nIn the switch to configurable HZ in 2.6, the treatment of the si_utime and\nsi_stime fields that are exposed to userland via the siginfo structure\nlooks to have been botched.  As things stand, these fields report times in\nunits of HZ, so that userland gets information that varies depending on\nthe HZ that the kernel was configured with.  This patch changes the\nreported values to use USER_HZ units.\n\nSigned-off-by: Michael Kerrisk \u003cmtk.manpages@gmail.com\u003e\nAcked-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "2b201a9eddf509e8e935b45e573648e36f4b623f",
      "tree": "84cbb34667bcde5566e5c3d127c9089bb9792dab",
      "parents": [
        "92413d771e7123304fb4b9efd2a00cccc946e383"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Fri Jul 25 01:47:31 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Jul 25 10:53:38 2008 -0700"
      },
      "message": "signals: do_signal_stop: kill the SIGNAL_UNKILLABLE check\n\nfae5fa44f1fd079ffbed8e0add929dd7bbd1347f changed do_signal_stop() to check\nSIGNAL_UNKILLABLE, this wasn\u0027t needed.  If signal_group_exit() \u003d\u003d F, the\nsignal sent to SIGNAL_UNKILLABLE task must be already filtered out by the\ncaller, get_signal_to_deliver().  And if signal_group_exit() \u003d\u003d T we are\nnot going to stop.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "92413d771e7123304fb4b9efd2a00cccc946e383",
      "tree": "c973360a9bec6c965b9f4b41923357feec14aa3a",
      "parents": [
        "3854a771821c970065e3203a0b40ddc4101538cc"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Fri Jul 25 01:47:30 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Jul 25 10:53:38 2008 -0700"
      },
      "message": "signals: dequeue_signal: don\u0027t check SIGNAL_GROUP_EXIT when setting SIGNAL_STOP_DEQUEUED\n\ndequeue_signal() checks SIGNAL_GROUP_EXIT before setting\nSIGNAL_STOP_DEQUEUED.  This was added by\n788e05a67c343fa22f2ae1d3ca264e7f15c25eaf a long ago to avoid the\ncoredump/SIGSTOP race.\n\nSince then the related code was changed, and now this subtle check is both\nincomplete and unneeded at the same time.  It is incomplete because\nnowadays exec() doesn\u0027t set SIGNAL_GROUP_EXIT, so in fact we should check\nsignal_group_exit() to avoid a similar race.  Fortunately, we doesn\u0027t need\nthe check at all.  The only function which relies on SIGNAL_STOP_DEQUEUED\nis do_signal_stop(), and it ignores this flag if signal_group_exit() \u003d\u003d T,\nthis covers the SIGNAL_GROUP_EXIT case.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "100360f03077663b7bef3af44805b6cf700c3bee",
      "tree": "338cedfd71101fdaeb317fc0692d1bf93bd3a1a7",
      "parents": [
        "d4434207616980885205c605697868c0f07e4378"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Fri Jul 25 01:47:29 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Jul 25 10:53:38 2008 -0700"
      },
      "message": "signals: change collect_signal() to return void\n\nWith the recent changes collect_signal() always returns true.  Change it\nto return void and update the single caller.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "d4434207616980885205c605697868c0f07e4378",
      "tree": "82415d69b92557e09d57f42c49aba05ef4775a89",
      "parents": [
        "6715ca451cfff1c9ce4b33ad9918a1dacf43997c"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Fri Jul 25 01:47:28 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Jul 25 10:53:38 2008 -0700"
      },
      "message": "signals: collect_signal: simplify the \"still_pending\" logic\n\nFactor out sigdelset() calls and remove the \"still_pending\" variable.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "6715ca451cfff1c9ce4b33ad9918a1dacf43997c",
      "tree": "a66cdfd7026e7ad40ad0675a35ff35886216ed5f",
      "parents": [
        "96347e7759e2e433c427defa0fa1adfc8cce6226"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Fri Jul 25 01:47:27 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Fri Jul 25 10:53:38 2008 -0700"
      },
      "message": "signals: collect_signal: remove the unneeded sigismember() check\n\ncollect_signal() checks sigismember(\u0026list-\u003esignal, sig), this is not\nneeded.  This \"sig\" was just found by next_signal(), so it must be valid.\n\nWe have a (completely broken) call to -\u003enotifier in between, but it must\nnot play with sigpending-\u003esignal bits or unlock -\u003esiglock.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "ba661292a2bc6ddd305a212b0526e5dc22195fe7",
      "tree": "69d5749d967c67deffb6d804f61c359f5da928ad",
      "parents": [
        "54da1174922cddd4be83d5a364b2e0fdd693f513"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Wed Jul 23 20:52:05 2008 +0400"
      },
      "committer": {
        "name": "Thomas Gleixner",
        "email": "tglx@linutronix.de",
        "time": "Thu Jul 24 01:26:08 2008 +0200"
      },
      "message": "posix-timers: fix posix_timer_event() vs dequeue_signal() race\n\nThe bug was reported and analysed by Mark McLoughlin \u003cmarkmc@redhat.com\u003e,\nthe patch is based on his and Roland\u0027s suggestions.\n\nposix_timer_event() always rewrites the pre-allocated siginfo before sending\nthe signal. Most of the written info is the same all the time, but memset(0)\nis very wrong. If -\u003esigq is queued we can race with collect_signal() which\ncan fail to find this siginfo looking at .si_signo, or copy_siginfo() can\ncopy the wrong .si_code/si_tid/etc.\n\nIn short, sys_timer_settime() can in fact stop the active timer, or the user\ncan receive the siginfo with the wrong .si_xxx values.\n\nMove \"memset(-\u003einfo, 0)\" from posix_timer_event() to alloc_posix_timer(),\nchange send_sigqueue() to set .si_overrun \u003d 0 when -\u003esigq is not queued.\nIt would be nice to move the whole sigq-\u003einfo initialization from send to\ncreate path, but this is not easy to do without uglifying timer_create()\nfurther.\n\nAs Roland rightly pointed out, we need more cleanups/fixes here, see the\n\"FIXME\" comment in the patch. Hopefully this patch makes sense anyway, and\nit can mask the most bad implications.\n\nReported-by: Mark McLoughlin \u003cmarkmc@redhat.com\u003e\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Mark McLoughlin \u003cmarkmc@redhat.com\u003e\nCc: Oliver Pinter \u003coliver.pntr@gmail.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: stable@kernel.org\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n\n kernel/posix-timers.c |   17 +++++++++++++----\n kernel/signal.c       |    1 +\n 2 files changed, 14 insertions(+), 4 deletions(-)\n\n"
    },
    {
      "commit": "cbaffba12ce08beb3e80bfda148ee0fa14aac188",
      "tree": "b35f29814b46593d864e8c8921e9eccac5a5a173",
      "parents": [
        "c8e85b4f4b9ee23bf0e79bdeb3da274a0f9c663f"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Mon May 26 20:55:42 2008 +0400"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon May 26 10:37:07 2008 -0700"
      },
      "message": "posix timers: discard SI_TIMER signals on exec\n\nBased on Roland\u0027s patch. This approach was suggested by Austin Clements\nfrom the very beginning, and then by Linus.\n\nAs Austin pointed out, the execing task can be killed by SI_TIMER signal\nbecause exec flushes the signal handlers, but doesn\u0027t discard the pending\nsignals generated by posix timers. Perhaps not a bug, but people find this\nsurprising. See http://bugzilla.kernel.org/show_bug.cgi?id\u003d10460\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Austin Clements \u003camdragon+kernelbugzilla@mit.edu\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "c8e85b4f4b9ee23bf0e79bdeb3da274a0f9c663f",
      "tree": "5eadfdc177f24261379f36798c3366df9be4a00a",
      "parents": [
        "84a881657d391121cd88c37f0a312dec3528fa44"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Mon May 26 20:55:42 2008 +0400"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon May 26 10:37:06 2008 -0700"
      },
      "message": "posix timers: sigqueue_free: don\u0027t free sigqueue if it is queued\n\nCurrently sigqueue_free() removes sigqueue from list, but doesn\u0027t cancel the\npending signal. This is not consistent, the task should either receive the\n\"full\" signal along with siginfo_t, or it shouldn\u0027t receive the signal at all.\n\nChange sigqueue_free() to clear SIGQUEUE_PREALLOC but leave sigqueue on list\nif it is queued.\n\nThis is a user-visible change. If the signal is blocked, it stays queued\nafter sys_timer_delete() until unblocked with the \"stale\" si_code/si_value,\nand of course it is still counted wrt RLIMIT_SIGPENDING which also limits\nthe number of posix timers.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Austin Clements \u003camdragon+kernelbugzilla@mit.edu\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "da7978b0348d497688541e2d2f5739aa2a2c334f",
      "tree": "f4f55bf4293ff203f598e7a57959da1c5a7ad295",
      "parents": [
        "dfc7064500061677720fa26352963c772d3ebe6b"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Fri May 23 13:04:41 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Sat May 24 09:56:10 2008 -0700"
      },
      "message": "signals: fix sigqueue_free() vs __exit_signal() race\n\n__exit_signal() does flush_sigqueue(tsk-\u003epending) outside of -\u003esiglock.\nThis can race with another thread doing sigqueue_free(), we can free the\nsame SIGQUEUE_PREALLOC sigqueue twice or corrupt the pending-\u003elist.\n\nNote that even sys_exit_group() can trigger this race, not only\nsys_timer_delete().\n\nMove the callsite of flush_sigqueue(tsk-\u003epending) under -\u003esiglock.\n\nThis patch doesn\u0027t touch flush_sigqueue(-\u003eshared_pending) below, it is\ncalled when there are no other threads which can play with signals, and\nsigqueue_free() can\u0027t be used outside of our thread group.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "4e4c22c71144c1b2e22c257ec6cf08ccb5be1165",
      "tree": "0a41fb405ab60654f70ead9698d5ce414a066c37",
      "parents": [
        "80fe728d593e3a048a56610de932919f7d6d968a"
      ],
      "author": {
        "name": "Roland McGrath",
        "email": "roland@redhat.com",
        "time": "Wed Apr 30 00:53:06 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Apr 30 08:29:37 2008 -0700"
      },
      "message": "signals: add set_restore_sigmask\n\nThis adds the set_restore_sigmask() inline in \u003clinux/thread_info.h\u003e and\nreplaces every set_thread_flag(TIF_RESTORE_SIGMASK) with a call to it.  No\nchange, but abstracts the details of the flag protocol from all the calls.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "80fe728d593e3a048a56610de932919f7d6d968a",
      "tree": "ff8effec1d05d871bcbb1347947d2a0970a8ff32",
      "parents": [
        "7a5e873f096e04e6d8719e4ecb7b70d2decca503"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Wed Apr 30 00:53:05 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Apr 30 08:29:37 2008 -0700"
      },
      "message": "signals: allow the kernel to actually kill /sbin/init\n\nCurrently the buggy /sbin/init hangs if SIGSEGV/etc happens.  The kernel sends\nthe signal, init dequeues it and ignores, returns from the exception, repeats\nthe faulting instruction, and so on forever.\n\nImho, such a behaviour is not good.  I think that the explicit loud death of\nthe buggy /sbin/init is better than the silent hang.\n\nChange force_sig_info() to clear SIGNAL_UNKILLABLE when the task should be\nreally killed.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "fae5fa44f1fd079ffbed8e0add929dd7bbd1347f",
      "tree": "8990ac958d29733cb61733ae69265472f5e1d13c",
      "parents": [
        "193191035ad6268db9f561e81e3474b8be89a5ba"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Wed Apr 30 00:53:03 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Apr 30 08:29:37 2008 -0700"
      },
      "message": "signals: fix /sbin/init protection from unwanted signals\n\nThe global init has a lot of long standing problems with the unhandled fatal\nsignals.\n\n\t- The \"is_global_init(current)\" check in get_signal_to_deliver()\n\t  protects only the main thread. Sub-thread can dequee the fatal\n\t  signal and shutdown the whole thread group except the main thread.\n\t  If it dequeues SIGSTOP /sbin/init will be stopped, this is not\n\t  right too. Note that we can\u0027t use is_global_init(-\u003egroup_leader),\n\t  this breaks exec and this can\u0027t solve other problems we have.\n\n\t- Even if afterwards ignored, the fatal signals sets SIGNAL_GROUP_EXIT\n\t  on delivery. This breaks exec, has other bad implications, and this\n\t  is just wrong.\n\nIntroduce the new SIGNAL_UNKILLABLE flag to fix these problems.  It also helps\nto solve some other problems addressed by the subsequent patches.\n\nCurrently we use this flag for the global init only, but it could also be used\nby kthreads and (perhaps) by the sub-namespace inits.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nAcked-by: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "193191035ad6268db9f561e81e3474b8be89a5ba",
      "tree": "ac4af28bf65dd7fc6c40d7260806725d9f3330ba",
      "parents": [
        "2e2ba22ea4fd4bb85f0fa37c521066db6775cbef"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Wed Apr 30 00:53:02 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Apr 30 08:29:37 2008 -0700"
      },
      "message": "signals: check_kill_permission: remove tasklist_lock\n\nNow that task_session() can\u0027t return a false NULL, check_kill_permission()\ndoesn\u0027t need tasklist_lock.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "2e2ba22ea4fd4bb85f0fa37c521066db6775cbef",
      "tree": "aada1523affbcbe1301decad43ad0875e1f680c4",
      "parents": [
        "53c30337f2c61aff6eecf2a446e839641172f9bd"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Wed Apr 30 00:53:01 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Apr 30 08:29:37 2008 -0700"
      },
      "message": "signals: check_kill_permission: check session under tasklist_lock\n\nThis wasn\u0027t documented, but as Atsushi Tsuji pointed out\ncheck_kill_permission() needs tasklist_lock for task_session_nr().  I missed\nthis fact when removed tasklist from the callers.\n\nChange check_kill_permission() to take tasklist_lock for the SIGCONT case.\nRe-order security checks so that we take tasklist_lock only if/when it is\nactually needed.  This is a minimal fix for now, tasklist will be removed\nlater.\n\nAlso change the code to use task_session() instead of task_session_nr().\n\nAlso, remove the SIGCONT check from cap_task_kill(), it is bogus (and the\nwhole function is bogus.  Serge, Eric, why it is still alive?).\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nAcked-by: Atsushi Tsuji \u003ca-tsuji@bk.jp.nec.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Serge Hallyn \u003cserue@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "53c30337f2c61aff6eecf2a446e839641172f9bd",
      "tree": "268c52124c19b379b7f9c32430414acb606699cb",
      "parents": [
        "021e1ae3d85a76ce962a300c96813f04ae50c87c"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Wed Apr 30 00:53:00 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Apr 30 08:29:36 2008 -0700"
      },
      "message": "signals: send_signal: be paranoid about signalfd_notify()\n\nsend_signal() shouldn\u0027t call signalfd_notify() if it then fails with -EAGAIN.\nHarmless, just a paranoid cleanup.\n\nAlso remove the comment.  It is obsolete, signalfd_notify() was simplified and\ndoes a simple wakeup.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nAcked-by: Davide Libenzi \u003cdavidel@xmailserver.org\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "021e1ae3d85a76ce962a300c96813f04ae50c87c",
      "tree": "1c3cfbf8151c339baa3b35a4a78fa50ccc7594ab",
      "parents": [
        "7e695a5ef5c1c768d7feb75cc61e42f13d763623"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Wed Apr 30 00:53:00 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Apr 30 08:29:36 2008 -0700"
      },
      "message": "signals: document CLD_CONTINUED notification mechanics\n\nA couple of small comments about how CLD_CONTINUED notification works.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "7e695a5ef5c1c768d7feb75cc61e42f13d763623",
      "tree": "97bf6b5865e097a77b791342eccaeddc7132b9fc",
      "parents": [
        "2dce81bff28dceb2153c901883a56f278d91db65"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Wed Apr 30 00:52:59 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Apr 30 08:29:36 2008 -0700"
      },
      "message": "signals: fold sig_ignored() into handle_stop_signal()\n\nRename handle_stop_signal() to prepare_signal(), make it return a boolean, and\nmove the callsites of sig_ignored() into it.\n\nNo functional changes for now.  But it would be nice to factor out the \"should\nwe drop this signal\" checks as much as possible, before we try to fix the bugs\nwith the sub-namespace init\u0027s signals (actually the global /sbin/init has some\nproblems with signals too).\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "2dce81bff28dceb2153c901883a56f278d91db65",
      "tree": "831da312ea00c5c505d376098b5b1a90fe33fed7",
      "parents": [
        "34c8f07b9ac499a807918eda377193a55f64f8df"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Wed Apr 30 00:52:58 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Apr 30 08:29:36 2008 -0700"
      },
      "message": "signals: cleanup the usage of print_fatal_signal()\n\nMove the callsite of print_fatal_signal() down, under \"if\n(sig_kernel_coredump(signr))\", so we don\u0027t need to check signr !\u003d SIGKILL.\n\nWe are only interested in the sig_kernel_coredump() signals anyway, and due to\nthe previous changes we almost never can see other fatal signals here except\nSIGKILL.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "34c8f07b9ac499a807918eda377193a55f64f8df",
      "tree": "042cf061406273dcfdb3fabe4b07425e4cb8f0aa",
      "parents": [
        "ac5c215383f43a106ba4ef298126bf78c126f5e9"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Wed Apr 30 00:52:58 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Apr 30 08:29:36 2008 -0700"
      },
      "message": "signals: handle_stop_signal: don\u0027t worry about SIGKILL\n\nhandle_stop_signal() clears SIGNAL_STOP_DEQUEUED when sig \u003d\u003d SIGKILL.  Remove\nthis nasty special case.  It was needed to prevent the race with group stop\nand exit caused by thread-specific SIGKILL.  Now that we use complete_signal()\nfor private signals too this is not needed, complete_signal() will notice\nSIGKILL and abort the soon-to-begin group stop.\n\nExcept: the target thread is dead (has PF_EXITING).  But in that case we\nshould not just clear SIGNAL_STOP_DEQUEUED and nothing more.  We should either\nkill the whole thread group, or silently ignore the signal.\n\nI suspect we are not right wrt zombie leaders, but this is another issue which\nand should be fixed separately.  Note that this check can\u0027t abort the group\nstop if it was already started/finished, this check only adds a subtle side\neffect if we race with the thread which has already dequeued sig_kernel_stop()\nsignal and temporary released -\u003esiglock.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "ac5c215383f43a106ba4ef298126bf78c126f5e9",
      "tree": "77340eea86103df7bc3b4a6c6d83f4140004bc9c",
      "parents": [
        "e62e6650e99a3dffcd0bf0d063cd818fbc13fa95"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Wed Apr 30 00:52:57 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Apr 30 08:29:36 2008 -0700"
      },
      "message": "signals: join send_sigqueue() with send_group_sigqueue()\n\nWe export send_sigqueue() and send_group_sigqueue() for the only user,\nposix_timer_event().  This is a bit silly, because both are just trivial\nhelpers on top of do_send_sigqueue() and because the we pass the unused\n.si_signo parameter.\n\nKill them both, rename do_send_sigqueue() to send_sigqueue(), and export it.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "e62e6650e99a3dffcd0bf0d063cd818fbc13fa95",
      "tree": "75f79d45eb89fb75014117b6fdc67bae1608f826",
      "parents": [
        "4cd4b6d4e0372075f846feb85aea016cbdbfec4c"
      ],
      "author": {
        "name": "Oleg Nesterov",
        "email": "oleg@tv-sign.ru",
        "time": "Wed Apr 30 00:52:56 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Apr 30 08:29:36 2008 -0700"
      },
      "message": "signals: unify send_sigqueue/send_group_sigqueue completely\n\nSuggested by Pavel Emelyanov.\n\nsend_sigqueue/send_group_sigqueue are only differ in how they lock -\u003esiglock.\nUnify them.  send_group_sigqueue() uses spin_lock() because it knows the task\ncan\u0027t exit, but in that case lock_task_sighand() can\u0027t fail and doesn\u0027t hurt.\n\nNote that the \"sig\" argument is ignored, it is always equal to -\u003esi_signo.\n\nSigned-off-by: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    }
  ],
  "next": "4cd4b6d4e0372075f846feb85aea016cbdbfec4c"
}