)]}' { "log": [ { "commit": "e0129ef91ed758c06b6557c36124acfb2e1c7305", "tree": "e47392371ed106f2241d18ac6339bedd6c699c9b", "parents": [ "9c1a125921d146f22cf28ff366ff69fd602a0e9b" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed May 26 14:42:53 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:44 2010 -0700" }, "message": "ptrace: PTRACE_GETFDPIC: fix the unsafe usage of child-\u003emm\n\nNow that Mike Frysinger unified the FDPIC ptrace code, we can fix the\nunsafe usage of child-\u003emm in ptrace_request(PTRACE_GETFDPIC).\n\nWe have the reference to task_struct, and ptrace_check_attach() verified\nthe tracee is stopped. But nothing can protect from SIGKILL after that,\nwe must not assume child-\u003emm !\u003d NULL.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nAcked-by: Mike Frysinger \u003cvapier.adi@gmail.com\u003e\nAcked-by: David Howells \u003cdhowells@redhat.com\u003e\nCc: Paul Mundt \u003clethal@linux-sh.org\u003e\nCc: Greg Ungerer \u003cgerg@snapgear.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": "9c1a125921d146f22cf28ff366ff69fd602a0e9b", "tree": "37df1b2ae74c23371de7e8b46427fc0a16727cdb", "parents": [ "0ac0c0d0f837c499afd02a802f9cf52d3027fa3b" ], "author": { "name": "Mike Frysinger", "email": "vapier@gentoo.org", "time": "Wed May 26 14:42:52 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:44 2010 -0700" }, "message": "ptrace: unify FDPIC implementations\n\nThe Blackfin/FRV/SuperH guys all have the same exact FDPIC ptrace code in\ntheir arch handlers (since they were probably copied \u0026 pasted). Since\nthese ptrace interfaces are an arch independent aspect of the FDPIC code,\nunify them in the common ptrace code so new FDPIC ports don\u0027t need to copy\nand paste this fundamental stuff yet again.\n\nSigned-off-by: Mike Frysinger \u003cvapier@gentoo.org\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nAcked-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: Paul Mundt \u003clethal@linux-sh.org\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": "4d7b4ac22fbec1a03206c6cde353f2fd6942f828", "tree": "2d96a9e9c28cf6fa628a278decc00ad55a8b043b", "parents": [ "3aaf51ace5975050ab43c7d4d7e439e0ae7d13d7", "94f3ca95787ada3d64339a4ecb2754236ab563f6" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 18 08:19:03 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 18 08:19:03 2010 -0700" }, "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: (311 commits)\n perf tools: Add mode to build without newt support\n perf symbols: symbol inconsistency message should be done only at verbose\u003d1\n perf tui: Add explicit -lslang option\n perf options: Type check all the remaining OPT_ variants\n perf options: Type check OPT_BOOLEAN and fix the offenders\n perf options: Check v type in OPT_U?INTEGER\n perf options: Introduce OPT_UINTEGER\n perf tui: Add workaround for slang \u003c 2.1.4\n perf record: Fix bug mismatch with -c option definition\n perf options: Introduce OPT_U64\n perf tui: Add help window to show key associations\n perf tui: Make \u003c- exit menus too\n perf newt: Add single key shortcuts for zoom into DSO and threads\n perf newt: Exit browser unconditionally when CTRL+C, q or Q is pressed\n perf newt: Fix the \u0027A\u0027/\u0027a\u0027 shortcut for annotate\n perf newt: Make \u003c- exit the ui_browser\n x86, perf: P4 PMU - fix counters management logic\n perf newt: Make \u003c- zoom out filters\n perf report: Report number of events, not samples\n perf hist: Clarify events_stats fields usage\n ...\n\nFix up trivial conflicts in kernel/fork.c and tools/perf/builtin-record.c\n" }, { "commit": "b8bc1389b74c2b66255651a6fcfae56c78b6e63f", "tree": "dc3d2b1d6beab0dd44ed0dda2e0aa1cc2a99be44", "parents": [ "5534ecb2dda04345e8243901e0e49599228b4273" ], "author": { "name": "Alessio Igor Bogani", "email": "abogani@texware.it", "time": "Sun Apr 25 13:18:48 2010 +0200" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Mon Apr 26 23:42:51 2010 +0200" }, "message": "ptrace: Cleanup useless header\n\nBKL isn\u0027t present anymore into this file thus we can safely remove\nsmp_lock.h inclusion.\n\nSigned-off-by: Alessio Igor Bogani \u003cabogani@texware.it\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: James Morris \u003cjmorris@namei.org\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n" }, { "commit": "5534ecb2dda04345e8243901e0e49599228b4273", "tree": "1d09ca0bcc6fcac12310300a306c233e350151c7", "parents": [ "2eaa9cfdf33b8d7fb7aff27792192e0019ae8fc6" ], "author": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Sat Feb 27 19:49:37 2010 +0100" }, "committer": { "name": "Frederic Weisbecker", "email": "fweisbec@gmail.com", "time": "Sat Apr 10 15:34:21 2010 +0200" }, "message": "ptrace: kill BKL in ptrace syscall\n\nThe comment suggests that this usage is stale. There is no bkl in the\nexec path so if there is a race lurking there, the bkl in ptrace is\nnot going to help in this regard.\n\nOverview of the possibility of \"accidental\" races this bkl might\nprotect:\n\n- ptrace_traceme() is protected against task removal and concurrent\nread/write on current-\u003eptrace as it locks write tasklist_lock.\n\n- arch_ptrace_attach() is serialized by ptrace_traceme() against\nconcurrent PTRACE_TRACEME or PTRACE_ATTACH\n\n- ptrace_attach() is protected the same way ptrace_traceme() and\nin turn serializes arch_ptrace_attach()\n\n- ptrace_check_attach() does its own well described serializing too.\n\nThere is no obvious race here.\n\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nAcked-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\n" }, { "commit": "faa4602e47690fb11221e00f9b9697c8dc0d4b19", "tree": "af667d1cdff7dc63b6893ee3f27a1f2503229ed1", "parents": [ "7c5ecaf7666617889f337296c610815b519abfa9" ], "author": { "name": "Peter Zijlstra", "email": "a.p.zijlstra@chello.nl", "time": "Thu Mar 25 14:51:50 2010 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Mar 26 11:33:55 2010 +0100" }, "message": "x86, perf, bts, mm: Delete the never used BTS-ptrace code\n\nSupport for the PMU\u0027s BTS features has been upstreamed in\nv2.6.32, but we still have the old and disabled ptrace-BTS,\nas Linus noticed it not so long ago.\n\nIt\u0027s buggy: TIF_DEBUGCTLMSR is trampling all over that MSR without\nregard for other uses (perf) and doesn\u0027t provide the flexibility\nneeded for perf either.\n\nIts users are ptrace-block-step and ptrace-bts, since ptrace-bts\nwas never used and ptrace-block-step can be implemented using a\nmuch simpler approach.\n\nSo axe all 3000 lines of it. That includes the *locked_memory*()\nAPIs in mm/mlock.c as well.\n\nReported-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nSigned-off-by: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Markus Metzger \u003cmarkus.t.metzger@intel.com\u003e\nCc: Steven Rostedt \u003crostedt@goodmis.org\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nLKML-Reference: \u003c20100325135413.938004390@chello.nl\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "c6a0dd7ec6fb2d4927979ed4dc562fc5c122d826", "tree": "415f5e04788eb289820685b33dabcc7949d6196b", "parents": [ "5e6dbc260704ce4d22fc9664f517f0bb6748feaa" ], "author": { "name": "Suresh Siddha", "email": "suresh.b.siddha@intel.com", "time": "Mon Feb 22 14:51:32 2010 -0800" }, "committer": { "name": "H. Peter Anvin", "email": "hpa@zytor.com", "time": "Tue Feb 23 13:45:26 2010 -0800" }, "message": "ptrace: Fix ptrace_regset() comments and diagnose errors specifically\n\nReturn -EINVAL for the bad size and for unrecognized NT_* type in\nptrace_regset() instead of -EIO.\n\nAlso update the comments for this ptrace interface with more clarifications.\n\nRequested-by: Roland McGrath \u003croland@redhat.com\u003e\nRequested-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nLKML-Reference: \u003c20100222225240.397523600@sbs-t61.sc.intel.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: H. Peter Anvin \u003chpa@zytor.com\u003e\n" }, { "commit": "2225a122ae26d542bdce523d9d87a4a7ba10e07b", "tree": "861117cc1711cdf3c10f76212afe2e57b05d34c4", "parents": [ "5b3efd500854d45d305b53c54c97db5970959980" ], "author": { "name": "Suresh Siddha", "email": "suresh.b.siddha@intel.com", "time": "Thu Feb 11 11:51:00 2010 -0800" }, "committer": { "name": "H. Peter Anvin", "email": "hpa@zytor.com", "time": "Thu Feb 11 15:08:33 2010 -0800" }, "message": "ptrace: Add support for generic PTRACE_GETREGSET/PTRACE_SETREGSET\n\nGeneric support for PTRACE_GETREGSET/PTRACE_SETREGSET commands which\nexport the regsets supported by each architecture using the correponding\nNT_* types. These NT_* types are already part of the userland ABI, used\nin representing the architecture specific register sets as different NOTES\nin an ELF core file.\n\n\u0027addr\u0027 parameter for the ptrace system call encode the REGSET type (using\nthe corresppnding NT_* type) and the \u0027data\u0027 parameter points to the\nstruct iovec having the user buffer and the length of that buffer.\n\n\tstruct iovec iov \u003d { buf, len};\n\tret \u003d ptrace(PTRACE_GETREGSET/PTRACE_SETREGSET, pid, NT_XXX_TYPE, \u0026iov);\n\nOn successful completion, iov.len will be updated by the kernel specifying\nhow much the kernel has written/read to/from the user\u0027s iov.buf.\n\nx86 extended state registers are primarily exported using this interface.\n\nSigned-off-by: Suresh Siddha \u003csuresh.b.siddha@intel.com\u003e\nLKML-Reference: \u003c20100211195614.886724710@sbs-t61.sc.intel.com\u003e\nAcked-by: Hongjiu Lu \u003chjl.tools@gmail.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: H. Peter Anvin \u003chpa@zytor.com\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": "7d45ecafb6792ca68da9517969d37d910601845f", "tree": "a98b1074e5577e66a97963745f975404d0aac266", "parents": [ "be940d6279c30a2d7c4e8d1d5435f957f594d66d", "7638d5322bd89d49e013a03fe2afaeb6d214fabd" ], "author": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Tue Jul 14 00:30:40 2009 +1000" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Tue Jul 14 00:30:40 2009 +1000" }, "message": "Merge branch \u0027master\u0027 into next\n\nConflicts:\n\tinclude/linux/personality.h\n\nUse Linus\u0027 version.\n\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "793285fcafce4719a05e0c99fa74b188157fe7fe", "tree": "3395530c1d4e604beac506c703b3093bb13f23ee", "parents": [ "82e3310ace59794ecf0f531eca94647b2863dfda" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Sun Jul 05 12:08:26 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Jul 06 13:57:04 2009 -0700" }, "message": "cred_guard_mutex: do not return -EINTR to user-space\n\ndo_execve() and ptrace_attach() return -EINTR if\nmutex_lock_interruptible(-\u003ecred_guard_mutex) fails.\n\nThis is not right, change the code to return ERESTARTNOINTR.\n\nPerhaps we should also change proc_pid_attr_write().\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: James Morris \u003cjmorris@namei.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9e48858f7d36a6a3849f1d1b40c3bf5624b4ee7c", "tree": "5d8fe586c5b1bbab36acc3b76b2b4dd1bc538968", "parents": [ "86abcf9cebf7b5ceb33facde297face5ec4d2260" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu May 07 19:26:19 2009 +1000" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Thu Jun 25 00:18:05 2009 +1000" }, "message": "security: rename ptrace_may_access \u003d\u003e ptrace_access_check\n\nThe -\u003eptrace_may_access() methods are named confusingly - the real\nptrace_may_access() returns a bool, while these security checks have\na retval convention.\n\nRename it to ptrace_access_check, to reduce the confusion factor.\n\n[ Impact: cleanup, no code changed ]\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "e49612544c695117644af48bb4625264a3d2918f", "tree": "7fe576d195533fb671c7a610cc35e9608e48c87e", "parents": [ "d92656633b8352c6d4b14afcb7beb154d76e7aa6" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed Jun 17 16:27:36 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 18 13:03:52 2009 -0700" }, "message": "ptrace: don\u0027t take tasklist to get/set -\u003elast_siginfo\n\nChange ptrace_getsiginfo/ptrace_setsiginfo to use lock_task_sighand()\nwithout tasklist_lock. Perhaps it makes sense to make a single helper\nwith \"bool rw\" argument.\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": "8053bdd5ce15dcf043d41a4dd6cac4a5567effdc", "tree": "b139a0763d46143fbe5e36811b03c1987ef23b7a", "parents": [ "4b105cbbaf7c06e01c27391957dc3c446328d087" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed Jun 17 16:27:34 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 18 13:03:51 2009 -0700" }, "message": "ptrace_get_task_struct: s/tasklist/rcu/, make it static\n\n- Use rcu_read_lock() instead of tasklist_lock to find/get the task\n in ptrace_get_task_struct().\n\n- Make it static, it has no callers outside of ptrace.c.\n\n- The comment doesn\u0027t match the reality, this helper does not do\n any checks. Beacuse it is really trivial and static I removed the\n whole comment.\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": "4b105cbbaf7c06e01c27391957dc3c446328d087", "tree": "4b6a65061a7bf46baea9d8867fdda0c22c8a3d45", "parents": [ "f2f0b00ad61d53adfecb8bdf8f3cf8f05f6ed548" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed Jun 17 16:27:33 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_lock() for attach\n\nRemove the \"Nasty, nasty\" lock dance in ptrace_attach()/ptrace_traceme() -\nfrom now task_lock() has nothing to do with ptrace at all.\n\nWith the recent changes nobody uses task_lock() to serialize with ptrace,\nbut in fact it was never needed and it was never used consistently.\n\nHowever ptrace_attach() calls __ptrace_may_access() and needs task_lock()\nto pin task-\u003emm for get_dumpable(). But we can call __ptrace_may_access()\nbefore we take tasklist_lock, -\u003ecred_exec_mutex protects us against\ndo_execve() path which can change creds and MMF_DUMP* flags.\n\n(ugly, but we can\u0027t use ptrace_may_access() because it hides the error\ncode, so we have to take task_lock() and use __ptrace_may_access()).\n\nNOTE: this change assumes that LSM hooks, security_ptrace_may_access() and\nsecurity_ptrace_traceme(), can be called without task_lock() held.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Chris Wright \u003cchrisw@sous-sol.org\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": "f2f0b00ad61d53adfecb8bdf8f3cf8f05f6ed548", "tree": "dda08f8bb3e8c403b2d1cf941b17c9909975c209", "parents": [ "b79b7ba93df14a1fc0b8d4d6d78a0e097de03bbd" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed Jun 17 16:27:32 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 18 13:03:51 2009 -0700" }, "message": "ptrace: cleanup check/set of PT_PTRACED during attach\n\nptrace_attach() and ptrace_traceme() are the last functions which look as\nif the untraced task can have task-\u003eptrace !\u003d 0, this must not be\npossible. Change the code to just check -\u003eptrace !\u003d 0 and s/|\u003d/\u003d/ to set\nPT_PTRACED.\n\nAlso, a couple of trivial whitespace cleanups in ptrace_attach().\n\nAnd move ptrace_traceme() up near ptrace_attach() to keep them close to\neach other.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Chris Wright \u003cchrisw@sous-sol.org\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": "b79b7ba93df14a1fc0b8d4d6d78a0e097de03bbd", "tree": "65ce7c7335fc1dd0a91a3224466c4eaa0ec489f4", "parents": [ "5cb11446892833e50970fb2277a9f7563b0a8bd3" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Wed Jun 17 16:27:31 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 18 13:03:51 2009 -0700" }, "message": "ptrace: ptrace_attach: check PF_KTHREAD + exit_state instead of -\u003emm\n\n- Add PF_KTHREAD check to prevent attaching to the kernel thread\n with a borrowed -\u003emm.\n\n With or without this change we can race with daemonize() which\n can set PF_KTHREAD or clear -\u003emm after ptrace_attach() does the\n check, but this doesn\u0027t matter because reparent_to_kthreadd()\n does ptrace_unlink().\n\n- Kill \"!task-\u003emm\" check. We don\u0027t really care about -\u003emm !\u003d NULL,\n and the task can call exit_mm() right after we drop task_lock().\n What we need is to make sure we can\u0027t attach after exit_notify(),\n check task-\u003eexit_state !\u003d 0 instead.\n\nAlso, move the \"already traced\" check down for cosmetic reasons.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Chris Wright \u003cchrisw@sous-sol.org\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": "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": "0b4ec6e4e01d98e55ae325a41304cccd87fa4c0f", "tree": "1e075fdf4aaf0c5c003564b3f3414bb4a92ef2ed", "parents": [ "04288f42033607099cebf5ca15ce8dcec3a9688b", "3af968e066d593bc4dacc021715f3e95ddf0996f" ], "author": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Tue Jun 09 09:27:53 2009 +1000" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Tue Jun 09 09:27:53 2009 +1000" }, "message": "Merge branch \u0027master\u0027 into next\n" }, { "commit": "edaba2c5334492f82d39ec35637c6dea5176a977", "tree": "d05ee0eacdb0c725da8374e9c1f38a4808dfdd2e", "parents": [ "08f67461c609ad96bf26732b590569e02e322019" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Thu Jun 04 16:29:09 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 04 18:07:40 2009 -0700" }, "message": "ptrace: revert \"ptrace_detach: the wrong wakeup breaks the ERESTARTxxx logic\"\n\nCommit 95a3540da9c81a5987be810e1d9a83640a366bd5 (\"ptrace_detach: the wrong\nwakeup breaks the ERESTARTxxx logic\") removed the \"extra\"\nwake_up_process() from ptrace_detach(), but as Jan pointed out this breaks\nthe compatibility.\n\nI believe the changelog is right and this wake_up() is wrong in many\nways, but GDB assumes that ptrace(PTRACE_DETACH, child, 0, 0) always\nwakes up the tracee.\n\nDespite the fact this breaks SIGNAL_STOP_STOPPED/group_stop_count logic,\nand despite the fact this wake_up_process() can break another\nassumption: PTRACE_DETACH with SIGSTOP should leave the tracee in\nTASK_STOPPED case. Because the untraced child can dequeue SIGSTOP and\ncall do_signal_stop() before ptrace_detach() calls wake_up_process().\n\nRevert this change for now. We need some fixes even if we we want to keep\nthe current behaviour, but these fixes are not for 2.6.30.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: Jan Kratochvil \u003cjan.kratochvil@redhat.com\u003e\nCc: Denys Vlasenko \u003cdvlasenk@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": "5e751e992f3fb08ba35e1ca8095ec8fbf9eda523", "tree": "711b1b47622dc9661f1d3d9c67d55c0b21456e8c", "parents": [ "d254117099d711f215e62427f55dfb8ebd5ad011" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Fri May 08 13:55:22 2009 +0100" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Mon May 11 08:15:36 2009 +1000" }, "message": "CRED: Rename cred_exec_mutex to reflect that it\u0027s a guard against ptrace\n\nRename cred_exec_mutex to reflect that it\u0027s a guard against foreign\nintervention on a process\u0027s credential state, such as is made by ptrace(). The\nattachment of a debugger to a process affects execve()\u0027s calculation of the new\ncredential state - _and_ also setprocattr()\u0027s calculation of that state.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "0ad5d703c6c0fcd385d956555460df95dff7eb7e", "tree": "4b777100f9be4fe90ca4bd043b9f98df672b5b3b", "parents": [ "44347d947f628060b92449702071bfe1d31dfb75", "1cb81b143fa8f0e4629f10690862e2e52ca792ff" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu May 07 11:18:34 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Thu May 07 13:36:22 2009 +0200" }, "message": "Merge branch \u0027tracing/hw-branch-tracing\u0027 into tracing/core\n\nMerge reason: this topic is ready for upstream now. It passed\n Oleg\u0027s review and Andrew had no further mm/*\n objections/observations either.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "cad81bc2529ab8c62b6fdc83a1c0c7f4a87209eb", "tree": "8d056ddb9db3db5eeba6a6fb629efe2c05b67ea0", "parents": [ "ce8a7424d23a36f043d0de8484f888971c831119" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Mon Apr 27 01:41:34 2009 +0200" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Mon Apr 27 20:30:51 2009 +1000" }, "message": "ptrace: ptrace_attach: fix the usage of -\u003ecred_exec_mutex\n\nptrace_attach() needs task-\u003ecred_exec_mutex, not current-\u003ecred_exec_mutex.\n\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\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "416dfdcdb894432547ead4fcb9fa6a36b396059e", "tree": "8033fdda07397a59c5fa98c88927040906ce6c1a", "parents": [ "56449f437add737a1e5e1cb7e00f63ac8ead1938", "091069740304c979f957ceacec39c461d0192158" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Apr 24 10:11:18 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Apr 24 10:11:23 2009 +0200" }, "message": "Merge commit \u0027v2.6.30-rc3\u0027 into tracing/hw-branch-tracing\n\nConflicts:\n\tarch/x86/kernel/ptrace.c\n\nMerge reason: fix the conflict above, and also pick up the CONFIG_BROKEN\n dependency change from upstream so that we can remove it\n\t here.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "f1671f6d783a2385d32e11f456cbe32f0e4b4b49", "tree": "3d2dd4672db69b9d3b7f35e06b0fb90ca4d8cc12", "parents": [ "7b102d034c0affc6ee703b576f2496ec6cb81d79" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Mon Apr 13 14:40:03 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 13 15:04:31 2009 -0700" }, "message": "ptrace: fix exit_ptrace() vs ptrace_traceme() race\n\nPointed out by Roland. The bug was recently introduced by me in\n\"forget_original_parent: split out the un-ptrace part\", commit\n39c626ae47c469abdfd30c6e42eff884931380d6.\n\nSince that patch we have a window after exit_ptrace() drops tasklist and\nbefore forget_original_parent() takes it again. In this window the child\ncan do ptrace(PTRACE_TRACEME) and nobody can untrace this child after\nthat.\n\nChange ptrace_traceme() to not attach to the exiting -\u003ereal_parent. We\ndon\u0027t report the error in this case, we pretend we attach right before\n-\u003ereal_parent calls exit_ptrace() which should untrace us anyway.\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": "3a709703538c471530405556dda136fd0d82b0dc", "tree": "0479d66b10b6d77bacc269471285bd2be344ccb9", "parents": [ "4c967291fc875a53de7126d256ad5e48f42a6521" ], "author": { "name": "Roland McGrath", "email": "roland@redhat.com", "time": "Tue Apr 07 23:21:06 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Apr 08 10:21:44 2009 -0700" }, "message": "ptrace: some checkpatch fixes\n\nThis fixes all the checkpatch --file complaints about kernel/ptrace.c\nand also removes an unused #include. I\u0027ve verified that there are no\nchanges to the compiled code on x86_64.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\n[ Removed the parts that just split a line - Linus ]\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0f4814065ff8c24ca8bfd75c9b73502be152c287", "tree": "f3816ecb64ee198235d2e9c1649de3241c3f2ac2", "parents": [ "ee811517a5604aa63fae803b7c044712699e1303" ], "author": { "name": "Markus Metzger", "email": "markus.t.metzger@intel.com", "time": "Fri Apr 03 16:43:48 2009 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Apr 07 13:36:31 2009 +0200" }, "message": "x86, ptrace: add bts context unconditionally\n\nAdd the ptrace bts context field to task_struct unconditionally.\n\nInitialize the field directly in copy_process().\nRemove all the unneeded functionality used to initialize that field.\n\nSigned-off-by: Markus Metzger \u003cmarkus.t.metzger@intel.com\u003e\nCc: roland@redhat.com\nCc: eranian@googlemail.com\nCc: oleg@redhat.com\nCc: juan.villacis@intel.com\nCc: ak@linux.jf.intel.com\nLKML-Reference: \u003c20090403144603.292754000@intel.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "09f38dc19deba9eae1d668dde8bdd2aaed3479ed", "tree": "5eaf5da4572374948ad62ab6dd4403726938c32a", "parents": [ "30a39e0e97f948e3ac8eeacd54d09f4bbfbab64b", "bbb76b552a9cef86777181c8577acc907b122b41" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Apr 03 17:35:06 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Apr 03 17:35:06 2009 -0700" }, "message": "Merge branch \u0027core-cleanups-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip\n\n* \u0027core-cleanups-for-linus\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:\n ptrace: remove a useless goto\n" }, { "commit": "1ee1184485df9c9a3503d3a684b911fb7c73d259", "tree": "0216bc3ebccf1c44b86617cd06e7b93510ef5bb8", "parents": [ "95a3540da9c81a5987be810e1d9a83640a366bd5" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Thu Apr 02 16:58:23 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Apr 02 19:05:00 2009 -0700" }, "message": "ptrace_untrace: fix the SIGNAL_STOP_STOPPED check\n\nThis bug is ancient too. ptrace_untrace() must not resume the task\nif the group stop in progress, we should set TASK_STOPPED instead.\n\nUnfortunately, we still have problems here:\n\n\t- if the process/thread was traced, SIGNAL_STOP_STOPPED\n\t does not necessary means this thread group is stopped.\n\n\t- ptrace breaks the bookkeeping of -\u003egroup_stop_count.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Jerome Marchand \u003cjmarchan@redhat.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Denys Vlasenko \u003cdvlasenk@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": "95a3540da9c81a5987be810e1d9a83640a366bd5", "tree": "d5143f232f885f6aa8829288dc0ceb2cd9e6e34e", "parents": [ "bb24c679a51b1a9b726b901330649e3861814ac0" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Thu Apr 02 16:58:21 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Apr 02 19:05:00 2009 -0700" }, "message": "ptrace_detach: the wrong wakeup breaks the ERESTARTxxx logic\n\nAnother ancient bug. Consider this trivial test-case,\n\n\tint main(void)\n\t{\n\t\tint pid \u003d fork();\n\n\t\tif (pid) {\n\t\t\tptrace(PTRACE_ATTACH, pid, NULL, NULL);\n\t\t\twait(NULL);\n\t\t\tptrace(PTRACE_DETACH, pid, NULL, NULL);\n\t\t} else {\n\t\t\tpause();\n\t\t\tprintf(\"WE HAVE A KERNEL BUG!!!\\n\");\n\t\t}\n\n\t\treturn 0;\n\t}\n\nthe child must not \"escape\" for sys_pause(), but it can and this was seen\nin practice.\n\nThis is because ptrace_detach does:\n\n\tif (!child-\u003eexit_state)\n\t\twake_up_process(child);\n\nthis wakeup can happen after this child has already restarted sys_pause(),\nbecause it gets another wakeup from ptrace_untrace().\n\nWith or without this patch, perhaps sys_pause() needs a fix. But this\nwakeup also breaks the SIGNAL_STOP_STOPPED logic in ptrace_untrace().\n\nRemove this wakeup. The caller saw this task in TASK_TRACED state, and\nunless it was SIGKILL\u0027ed in between __ptrace_unlink()-\u003eptrace_untrace()\nshould handle this case correctly. If it was SIGKILL\u0027ed, we don\u0027t need to\nwakup the dying tracee too.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Jerome Marchand \u003cjmarchan@redhat.com\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: Denys Vlasenko \u003cdvlasenk@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": "39c626ae47c469abdfd30c6e42eff884931380d6", "tree": "58cbe75bac79ce8ef55c94189df26448d0283918", "parents": [ "7f5d3652d469cdf9eb2365dfea7ce3fb9e1409cc" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Thu Apr 02 16:58:18 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Apr 02 19:05:00 2009 -0700" }, "message": "forget_original_parent: split out the un-ptrace part\n\nBy discussion with Roland.\n\n- Rename ptrace_exit() to exit_ptrace(), and change it to do all the\n necessary work with -\u003eptraced list by its own.\n\n- Move this code from exit.c to ptrace.c\n\n- Update the comment in ptrace_detach() to explain the rechecking of\n the child-\u003eptrace.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: \"Metzger, Markus T\" \u003cmarkus.t.metzger@intel.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": "4576145c1ecdaaea9ef8976a48335206aa1ebf91", "tree": "b20b51848380b708f4158852b1bb4afa29ffc5f0", "parents": [ "b1b4c6799fb59e710454bfe0ab477cb8523a8667" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Thu Apr 02 16:58:14 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Apr 02 19:04:59 2009 -0700" }, "message": "ptrace: fix possible zombie leak on PTRACE_DETACH\n\nWhen ptrace_detach() takes tasklist, the tracee can be SIGKILL\u0027ed. If it\nhas already passed exit_notify() we can leak a zombie, because a) ptracing\ndisables the auto-reaping logic, and b) -\u003ereal_parent was not notified\nabout the child\u0027s death.\n\nptrace_detach() should follow the ptrace_exit\u0027s logic, change the code\naccordingly.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Jerome Marchand \u003cjmarchan@redhat.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nTested-by: Denys Vlasenko \u003cdvlasenk@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": "95c3eb76dc07fd81289888ffc42948196b34b444", "tree": "a656316699a090405387d0071bac2a03a7128f57", "parents": [ "6588c1e3ff01418acafd938db0740e3477dc8cb7" ], "author": { "name": "Oleg Nesterov", "email": "oleg@redhat.com", "time": "Thu Apr 02 16:58:11 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Apr 02 19:04:59 2009 -0700" }, "message": "ptrace: kill __ptrace_detach(), fix -\u003eexit_state check\n\nMove the code from __ptrace_detach() to its single caller and kill this\nhelper.\n\nAlso, fix the -\u003eexit_state check, we shouldn\u0027t wake up EXIT_DEAD tasks.\nActually, I think task_is_stopped_or_traced() makes more sense, but this\nneeds another patch.\n\nSigned-off-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Jerome Marchand \u003cjmarchan@redhat.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Denys Vlasenko \u003cdvlasenk@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": "bbb76b552a9cef86777181c8577acc907b122b41", "tree": "8e306a63d56781776cf800faa3fb312a3bf7367d", "parents": [ "7a203f3b089be4410fe065dd9927027eade94557" ], "author": { "name": "Américo Wang", "email": "xiyou.wangcong@gmail.com", "time": "Tue Mar 10 17:34:47 2009 +0800" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Mar 10 13:39:29 2009 +0100" }, "message": "ptrace: remove a useless goto\n\nImpact: cleanup\n\nObviously, this goto is useless. Remove it.\n\nSigned-off-by: WANG Cong \u003cxiyou.wangcong@gmail.com\u003e\nCc: Andrew Morton \u003cakpm@osdl.org\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nLKML-Reference: \u003c20090310093447.GC3179@hack\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "1e7bfb2134dfec37ce04fb3a4ca89299e892d10c", "tree": "99c676262e696754dcbfb2d6f59499972cd0c38c", "parents": [ "c4ea37c26a691ad0b7e86aa5884aab27830e95c9" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:14:29 2009 +0100" }, "committer": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Jan 14 14:15:29 2009 +0100" }, "message": "[CVE-2009-0029] System call wrappers part 27\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\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": "bf53de907dfdaac178c92d774aae7370d7b97d20", "tree": "738a07a8b4b22f7bb8ec2029c9ea9c635db6c62a", "parents": [ "30cd324e9787ccc9a5ede59742d5409857550692" ], "author": { "name": "Markus Metzger", "email": "markus.t.metzger@intel.com", "time": "Fri Dec 19 15:10:24 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sat Dec 20 09:15:46 2008 +0100" }, "message": "x86, bts: add fork and exit handling\n\nImpact: introduce new ptrace facility\n\nAdd arch_ptrace_untrace() function that is called when the tracer\ndetaches (either voluntarily or when the tracing task dies);\nptrace_disable() is only called on a voluntary detach.\n\nAdd ptrace_fork() and arch_ptrace_fork(). They are called when a\ntraced task is forked.\n\nClear DS and BTS related fields on fork.\n\nRelease DS resources and reclaim memory in ptrace_untrace(). This\nreleases resources already when the tracing task dies. We used to do\nthat when the traced task dies.\n\nSigned-off-by: Markus Metzger \u003cmarkus.t.metzger@intel.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ec98ce480ada787f2cfbd696980ff3564415505b", "tree": "1a4d644b38f9f1e4b4e086fde0b195df4a92cf84", "parents": [ "3496f92beb9aa99ef21fccc154a36c7698e9c538", "feaf3848a813a106f163013af6fcf6c4bfec92d9" ], "author": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Thu Dec 04 17:16:36 2008 +1100" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Thu Dec 04 17:16:36 2008 +1100" }, "message": "Merge branch \u0027master\u0027 into next\n\nConflicts:\n\tfs/nfsd/nfs4recover.c\n\nManually fixed above to use new creds API functions, e.g.\nnfs4_save_creds().\n\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "96b8936a9ed08746e47081458a5eb9e43a751e24", "tree": "d1a738fdd95dda182f99c90fe3079283e0b07307", "parents": [ "16799c6a4d5156c6ee185b51b7586cca1aae0800" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Tue Nov 25 08:10:03 2008 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Nov 30 11:00:15 2008 -0800" }, "message": "remove __ARCH_WANT_COMPAT_SYS_PTRACE\n\nAll architectures now use the generic compat_sys_ptrace, as should every\nnew architecture that needs 32bit compat (if we\u0027ll ever get another).\n\nRemove the now superflous __ARCH_WANT_COMPAT_SYS_PTRACE define, and also\nkill a comment about __ARCH_SYS_PTRACE that was added after\n__ARCH_SYS_PTRACE was already gone.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\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": "b747c8c102cc0677a7a8056a093f58d7c9b500e7", "tree": "5b0a67f24117dee1c6169e6a5e2a912c1ea5c28f", "parents": [ "c4596435404976b0ded9cdf18b456ca2e1408ddd" ], "author": { "name": "Adrian Bunk", "email": "bunk@kernel.org", "time": "Sat Oct 18 20:28:21 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 20 08:52:39 2008 -0700" }, "message": "make ptrace_untrace() static\n\nptrace_untrace() can now become static.\n\nSigned-off-by: Adrian Bunk \u003cbunk@kernel.org\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": "5cd9c58fbe9ec92b45b27e131719af4f2bd9eb40", "tree": "8573db001b4dc3c2ad97102dda42b841c40b5f6c", "parents": [ "8d0968abd03ec6b407df117adc773562386702fa" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Thu Aug 14 11:37:28 2008 +0100" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Thu Aug 14 22:59:43 2008 +1000" }, "message": "security: Fix setting of PF_SUPERPRIV by __capable()\n\nFix the setting of PF_SUPERPRIV by __capable() as it could corrupt the flags\nthe target process if that is not the current process and it is trying to\nchange its own flags in a different way at the same time.\n\n__capable() is using neither atomic ops nor locking to protect t-\u003eflags. This\npatch removes __capable() and introduces has_capability() that doesn\u0027t set\nPF_SUPERPRIV on the process being queried.\n\nThis patch further splits security_ptrace() in two:\n\n (1) security_ptrace_may_access(). This passes judgement on whether one\n process may access another only (PTRACE_MODE_ATTACH for ptrace() and\n PTRACE_MODE_READ for /proc), and takes a pointer to the child process.\n current is the parent.\n\n (2) security_ptrace_traceme(). This passes judgement on PTRACE_TRACEME only,\n and takes only a pointer to the parent process. current is the child.\n\n In Smack and commoncap, this uses has_capability() to determine whether\n the parent will be permitted to use PTRACE_ATTACH if normal checks fail.\n This does not set PF_SUPERPRIV.\n\nTwo of the instances of __capable() actually only act on current, and so have\nbeen changed to calls to capable().\n\nOf the places that were using __capable():\n\n (1) The OOM killer calls __capable() thrice when weighing the killability of a\n process. All of these now use has_capability().\n\n (2) cap_ptrace() and smack_ptrace() were using __capable() to check to see\n whether the parent was allowed to trace any process. As mentioned above,\n these have been split. For PTRACE_ATTACH and /proc, capable() is now\n used, and for PTRACE_TRACEME, has_capability() is used.\n\n (3) cap_safe_nice() only ever saw current, so now uses capable().\n\n (4) smack_setprocattr() rejected accesses to tasks other than current just\n after calling __capable(), so the order of these two tests have been\n switched and capable() is used instead.\n\n (5) In smack_file_send_sigiotask(), we need to allow privileged processes to\n receive SIGIO on files they\u0027re manipulating.\n\n (6) In smack_task_wait(), we let a process wait for a privileged process,\n whether or not the process doing the waiting is privileged.\n\nI\u0027ve tested this with the LTP SELinux and syscalls testscripts.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nAcked-by: Casey Schaufler \u003ccasey@schaufler-ca.com\u003e\nAcked-by: Andrew G. Morgan \u003cmorgan@kernel.org\u003e\nAcked-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "85ba2d862e521375a8ee01526c5c46b1f24bb4af", "tree": "f098555cb580b2864f145aa845b574f07d2cf694", "parents": [ "1f5a4ad97a0e7b663d527ecc02aabe203d000d91" ], "author": { "name": "Roland McGrath", "email": "roland@redhat.com", "time": "Fri Jul 25 19:45:58 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jul 26 12:00:09 2008 -0700" }, "message": "tracehook: wait_task_inactive\n\nThis extends wait_task_inactive() with a new argument so it can be used in\na \"soft\" mode where it will check for the task changing state unexpectedly\nand back off. There is no change to existing callers. This lays the\ngroundwork to allow robust, noninvasive tracing that can try to sample a\nblocked thread but back off safely if it wakes up.\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": "f470021adb9190819c03d6d8c5c860a17480aa6d", "tree": "9e5c2808138624e272b562a502cfd035ae59c268", "parents": [ "98abed02007b19bbfd68b6d06a5485afc3eeb01b" ], "author": { "name": "Roland McGrath", "email": "roland@redhat.com", "time": "Mon Mar 24 18:36:23 2008 -0700" }, "committer": { "name": "Roland McGrath", "email": "roland@redhat.com", "time": "Wed Jul 16 18:02:33 2008 -0700" }, "message": "ptrace children revamp\n\nptrace no longer fiddles with the children/sibling links, and the\nold ptrace_children list is gone. Now ptrace, whether of one\u0027s own\nchildren or another\u0027s via PTRACE_ATTACH, just uses the new ptraced\nlist instead.\n\nThere should be no user-visible difference that matters. The only\nchange is the order in which do_wait() sees multiple stopped\nchildren and stopped ptrace attachees. Since wait_task_stopped()\nwas changed earlier so it no longer reorders the children list, we\nalready know this won\u0027t cause any new problems.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\n" }, { "commit": "006ebb40d3d65338bd74abb03b945f8d60e362bd", "tree": "c548c678b54b307e1fb9acf94676fb7bfd849501", "parents": [ "feb2a5b82d87fbdc01c00b7e9413e4b5f4c1f0c1" ], "author": { "name": "Stephen Smalley", "email": "sds@tycho.nsa.gov", "time": "Mon May 19 08:32:49 2008 -0400" }, "committer": { "name": "James Morris", "email": "jmorris@namei.org", "time": "Mon Jul 14 15:01:47 2008 +1000" }, "message": "Security: split proc ptrace checking into read vs. attach\n\nEnable security modules to distinguish reading of process state via\nproc from full ptrace access by renaming ptrace_may_attach to\nptrace_may_access and adding a mode argument indicating whether only\nread access or full attach access is requested. This allows security\nmodules to permit access to reading process state without granting\nfull ptrace access. The base DAC/capability checking remains unchanged.\n\nRead access to /proc/pid/mem continues to apply a full ptrace attach\ncheck since check_mem_permission() already requires the current task\nto already be ptracing the target. The other ptrace checks within\nproc for elements like environ, maps, and fds are changed to pass the\nread mode instead of attach.\n\nIn the SELinux case, we model such reading of process state as a\nreading of a proc file labeled with the target process\u0027 label. This\nenables SELinux policy to permit such reading of process state without\npermitting control or manipulation of the target process, as there are\na number of cases where programs probe for such information via proc\nbut do not need to be able to control the target (e.g. procps,\nlsof, PolicyKit, ConsoleKit). At present we have to choose between\nallowing full ptrace in policy (more permissive than required/desired)\nor breaking functionality (or in some cases just silencing the denials\nvia dontaudit rules but this can hide genuine attacks).\n\nThis version of the patch incorporates comments from Casey Schaufler\n(change/replace existing ptrace_may_attach interface, pass access\nmode), and Chris Wright (provide greater consistency in the checking).\n\nNote that like their predecessors __ptrace_may_attach and\nptrace_may_attach, the __ptrace_may_access and ptrace_may_access\ninterfaces use different return value conventions from each other (0\nor -errno vs. 1 or 0). I retained this difference to avoid any\nchanges to the caller logic but made the difference clearer by\nchanging the latter interface to return a bool rather than an int and\nby adding a comment about it to ptrace.h for any future callers.\n\nSigned-off-by: Stephen Smalley \u003csds@tycho.nsa.gov\u003e\nAcked-by: Chris Wright \u003cchrisw@sous-sol.org\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\n" }, { "commit": "bcf35afb528109a31264b45d4851fa6ae72dbe18", "tree": "37607aae9efdbd1005d82e0a9a679899eb5a3afe", "parents": [ "9fc3ace937a675bf42cbe6e6ef8950a6731ca16f" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Thu May 01 18:43:12 2008 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 01 10:21:54 2008 -0700" }, "message": "make generic sys_ptrace unconditional\n\nWith s390 the last arch switched to the generic sys_ptrace yesterday so\nwe can now kill the ifdef around it to enforce every new port it using\nit instead of introducing new weirdo versions.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "00cd5c37afd5f431ac186dd131705048c0a11fdb", "tree": "d5412f6c720e2cee11ac66783bb45e6bd78f4a1d", "parents": [ "33e9fc7d01269737cd5a3b6de1db9d0e796ab708" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed Apr 30 00:53:15 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Apr 30 08:29:38 2008 -0700" }, "message": "ptrace: permit ptracing of /sbin/init\n\nAfaics, currently there are no kernel problems with ptracing init, it can\u0027t\nlose SIGNAL_UNKILLABLE flag and be killed/stopped by accident.\n\nThe ability to strace/debug init can be very useful if you try to figure out\nwhy it does not work as expected.\n\nHowever, admin should know what he does, \"gdb /sbin/init 1\" stops init, it\ncan\u0027t reap orphaned zombies or take care of /etc/inittab until continued. It\nis even possible to crash init (and thus the whole system) if you wish,\nptracer has full control.\n\nSee also the long discussion: http://marc.info/?t\u003d120628018600001\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nAcked-by: 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": "33e9fc7d01269737cd5a3b6de1db9d0e796ab708", "tree": "36084d425e4d39ea06acff6f12164f257d0a102c", "parents": [ "68cb94786630b34196713794a2880ade17fca887" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed Apr 30 00:53:14 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Apr 30 08:29:38 2008 -0700" }, "message": "ptrace: ptrace_attach: use send_sig_info() instead force_sig_specific()\n\nNobody can block/ignore SIGSTOP, no need to use force_sig_specific() in\nptrace_attach. Use the \"regular\" send_sig_info().\n\nWith this patch stracing of /sbin/init doesn\u0027t clear its SIGNAL_UNKILLABLE,\nbut not that this makes ptracing of init safe.\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": "68cb94786630b34196713794a2880ade17fca887", "tree": "78bd2d66aaaa2c9acdd6060a9a9964420c511ebc", "parents": [ "53b6f9fbd3b63af14b4f6268e8b5b80d178d05bc" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed Apr 30 00:53:14 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Apr 30 08:29:38 2008 -0700" }, "message": "ptrace: __ptrace_unlink: use the ptrace_reparented() helper\n\nCurrently __ptrace_unlink() checks list_empty(-\u003eptrace_list) to figure out\nwhether the child was reparented. Change the code to use ptrace_reparented()\nto make this check more explicit and consistent.\n\nNo functional changes.\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": "9d04d9280c4bbf6950b70b705bc4ace41de65615", "tree": "594f4d9faf9d830fc7b1a7589e4a61f16b1fdf58", "parents": [ "e97e386b126c2d60b8da61ce1e4964b41b3d1514" ], "author": { "name": "Roland McGrath", "email": "roland@redhat.com", "time": "Mon Apr 28 13:57:19 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 14:14:36 2008 -0700" }, "message": "ptrace: conditionalize compat_ptrace_request\n\nMy recent additions to compat_ptrace_request made it mandatory\nfor CONFIG_COMPAT arch\u0027s to define copy_siginfo_from_user32.\nThis broke some builds, though they all really should get cleaned\nup in that way.\n\nSince all the arch\u0027s that actually call compat_ptrace_request have\nnow been cleaned up to use the generic compat_sys_ptrace, we can\navoid the build problems on the crufty arch\u0027s by changing the\nconditionals on the definition.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e16b27816462de700f9508d86954410c41105dc2", "tree": "f3827a23a43dcaad06362d511ac20d576b9128d5", "parents": [ "553a56726be86c09cfa53c84da1ea0e2043e364e" ], "author": { "name": "Roland McGrath", "email": "roland@redhat.com", "time": "Sun Apr 20 13:10:12 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 21 15:53:41 2008 -0700" }, "message": "ptrace: compat_ptrace_request siginfo\n\nThis adds support for PTRACE_GETSIGINFO and PTRACE_SETSIGINFO in\ncompat_ptrace_request. It relies on existing arch definitions for\ncopy_siginfo_to_user32 and copy_siginfo_from_user32.\n\nOn powerpc, this fixes a longstanding regression of 32-bit ptrace\ncalls on 64-bit kernels vs native calls (64-bit calls or 32-bit\nkernels). This can be seen in a 32-bit call using PTRACE_GETSIGINFO\nto examine e.g. siginfo_t.si_addr from a signal that sets it.\n(This was broken as of 2.6.24 and, I presume, many or all prior versions.)\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c0c0b649d67aa775aa9851de61aade17504be70c", "tree": "5902fb53a364155352fcc04e87860d724d8b31fd", "parents": [ "34a1738f7da0b3d28d4b066d03a78f46b8cab68f" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Fri Feb 08 04:19:00 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:26 2008 -0800" }, "message": "ptrace_check_attach: remove unneeded -\u003esignal !\u003d NULL check\n\nIt is not possible to see the PT_PTRACED task without -\u003esignal/sighand under\ntasklist_lock, release_task() does ptrace_unlink() first. If the task was\nalready released before, ptrace_attach() can\u0027t succeed and set PT_PTRACED.\nRemove this check.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6b39c7bfbd1436836c0fb34c5b437fda1a7a3dd4", "tree": "60d3d9719eef3076527fcbf9c3cb362fe0f52d61", "parents": [ "01b8b07a5d77d22e609267dcae74d15e3e9c5f13" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Fri Feb 08 04:18:58 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:26 2008 -0800" }, "message": "kill PT_ATTACHED\n\nSince the patch\n\n\t\"Fix ptrace_attach()/ptrace_traceme()/de_thread() race\"\n\tcommit f5b40e363ad6041a96e3da32281d8faa191597b9\n\nwe set PT_ATTACHED and change child-\u003eparent \"atomically\" wrt task_list lock.\n\nThis means we can remove the checks like \"PT_ATTACHED \u0026\u0026 -\u003eparent !\u003d ptracer\"\nwhich were needed to catch the \"ptrace attach is in progress\" case. We can\nalso remove the flag itself since nobody else uses it.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nAcked-by: Roland McGrath \u003croland@redhat.com\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f17d30a803e8434c4ef381bb5cfa1956ff0201f0", "tree": "42f71e13e01c0d142a30489031797d3d0ecf1ef9", "parents": [ "a1c9eea9e56a7196c6891f6426b799c4598b38e2" ], "author": { "name": "Adrian Bunk", "email": "bunk@kernel.org", "time": "Wed Feb 06 01:36:44 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Feb 06 10:41:02 2008 -0800" }, "message": "kernel/ptrace.c should #include \u003clinux/syscalls.h\u003e\n\nEvery file should include the headers containing the prototypes for its global\nfunctions (in this case sys_ptrace()).\n\nSigned-off-by: Adrian Bunk \u003cbunk@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": "d9ae90ac4bdce769ddb27c2e24c3351a30c3daf8", "tree": "220f88576b5c83369892ce13cb180bab6cccba7a", "parents": [ "06b8e878a9bc9301201cffe186eba99c4185f20a" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed Feb 06 01:36:13 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Feb 06 10:41:00 2008 -0800" }, "message": "use __set_task_state() for TRACED/STOPPED tasks\n\n1. It is much easier to grep for -\u003estate change if __set_task_state() is used\n instead of the direct assignment.\n\n2. ptrace_stop() and handle_group_stop() use set_task_state() which adds the\n unneeded mb() (btw even if we use mb() it is still possible that do_wait()\n sees the new -\u003estate but not -\u003eexit_code, but this is ok).\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": "75659ca0c10992dcb39258518368a0f6f56e935d", "tree": "5d014ceb2f10158061a23d0d976f9a613d85e659", "parents": [ "fbdde7bd274d74729954190f99afcb1e3d9bbfba", "2dfe485a2c8afa54cb069fcf48476f6c90ea3fdf" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Feb 01 11:45:47 2008 +1100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Feb 01 11:45:47 2008 +1100" }, "message": "Merge branch \u0027task_killable\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc\n\n* \u0027task_killable\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc: (22 commits)\n Remove commented-out code copied from NFS\n NFS: Switch from intr mount option to TASK_KILLABLE\n Add wait_for_completion_killable\n Add wait_event_killable\n Add schedule_timeout_killable\n Use mutex_lock_killable in vfs_readdir\n Add mutex_lock_killable\n Use lock_page_killable\n Add lock_page_killable\n Add fatal_signal_pending\n Add TASK_WAKEKILL\n exit: Use task_is_*\n signal: Use task_is_*\n sched: Use task_contributes_to_load, TASK_ALL and TASK_NORMAL\n ptrace: Use task_is_*\n power: Use task_is_*\n wait: Use TASK_NORMAL\n proc/base.c: Use task_is_*\n proc/array.c: Use TASK_REPORT\n perfmon: Use task_is_*\n ...\n\nFixed up conflicts in NFS/sunrpc manually..\n" }, { "commit": "c269f19617f508cc5c29c0b064c1a437d7011a46", "tree": "da49abc09dcf573df0580b305dba647a70306ac8", "parents": [ "032d82d9065dec0e26718eca376c2029e4bd0595" ], "author": { "name": "Roland McGrath", "email": "roland@redhat.com", "time": "Wed Jan 30 13:31:48 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:31:48 2008 +0100" }, "message": "x86: compat_sys_ptrace\n\nThis adds a generic definition of compat_sys_ptrace that calls\ncompat_arch_ptrace, parallel to sys_ptrace/arch_ptrace. Some\nmachines needing this already define a function by that name.\nThe new generic function is defined only on machines that\nput #define __ARCH_WANT_COMPAT_SYS_PTRACE into asm/ptrace.h.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "032d82d9065dec0e26718eca376c2029e4bd0595", "tree": "44cdb3296f25a9b2d5044fe1c12fbb03b085ac37", "parents": [ "16c3e389e7a7254ff8dc7029ac4fbe996c3c75bf" ], "author": { "name": "Roland McGrath", "email": "roland@redhat.com", "time": "Wed Jan 30 13:31:47 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:31:47 2008 +0100" }, "message": "x86: compat_ptrace_request\n\nThis adds a compat_ptrace_request that is the analogue of ptrace_request\nfor the things that 32-on-64 ptrace implementations can share in common.\nSo far there are just a couple of requests handled generically.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "16c3e389e7a7254ff8dc7029ac4fbe996c3c75bf", "tree": "e87239acac664b4f940118b9920e457cb8a1461c", "parents": [ "5bde4d181793be84351bc21c256d8c71cfcd313a" ], "author": { "name": "Roland McGrath", "email": "roland@redhat.com", "time": "Wed Jan 30 13:31:47 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:31:47 2008 +0100" }, "message": "x86: ptrace_request peekdata/pokedata\n\nThis makes ptrace_request handle {PEEK,POKE}{TEXT,DATA} directly.\nEvery arch_ptrace that could call generic_ptrace_peekdata already\nhas a default case calling ptrace_request, so this keeps things\nsimpler for the arch code.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "5b88abbf770a0e1975c668743100f42934f385e8", "tree": "ae6af4df76e71682efb4d90620182bfaf541e9c8", "parents": [ "dc802c2d2e66e2d1544e023bfd4be6cdee48d57b" ], "author": { "name": "Roland McGrath", "email": "roland@redhat.com", "time": "Wed Jan 30 13:30:53 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:30:53 2008 +0100" }, "message": "ptrace: generic PTRACE_SINGLEBLOCK\n\nThis makes ptrace_request handle PTRACE_SINGLEBLOCK along with\nPTRACE_CONT et al. The new generic code makes use of the\narch_has_block_step macro and generic entry points on machines\nthat define them.\n\n[ mingo@elte.hu: bugfix ]\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "36df29d7994180cf7f0ccc5d46495855d56d2721", "tree": "3291b504ef268714ea40de90b297dba62f11206b", "parents": [ "e1f287735c1e58c653b516931b5d3dd899edcb77" ], "author": { "name": "Roland McGrath", "email": "roland@redhat.com", "time": "Wed Jan 30 13:30:51 2008 +0100" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Jan 30 13:30:51 2008 +0100" }, "message": "ptrace: generic resume\n\nThis makes ptrace_request handle all the ptrace requests that wake\nup the traced task. These do low-level ptrace implementation magic\nthat is not arch-specific and should be kept out of arch code. The\nimplementations on each arch usually do the same thing. The new\ngeneric code makes use of the arch_has_single_step macro and generic\nentry points to handle PTRACE_SINGLESTEP.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Thomas Gleixner \u003ctglx@linutronix.de\u003e\n" }, { "commit": "6ea6dd93c9454cc9521134f907bc970d09f460e4", "tree": "05f8d9f293d7127e19774d5fa10ebf685a6fa76d", "parents": [ "7f0f616bb093823b70855685cf085d39a8784818" ], "author": { "name": "Haavard Skinnemoen", "email": "hskinnemoen@atmel.com", "time": "Tue Nov 27 13:02:40 2007 +0100" }, "committer": { "name": "Haavard Skinnemoen", "email": "hskinnemoen@atmel.com", "time": "Fri Jan 25 08:31:39 2008 +0100" }, "message": "ptrace: Call arch_ptrace_attach() when request\u003dPTRACE_TRACEME\n\narch_ptrace_attach() is a hook that allows the architecture to do\nbook-keeping after a ptrace attach. This patch adds a call to this\nhook when handling a PTRACE_TRACEME request as well.\n\nCurrently only one architecture, m32r, implements this hook. When\ncalled, it initializes a number of debug trap slots in the ptraced\ntask\u0027s thread struct, and it looks to me like this is the right thing\nto do after a PTRACE_TRACEME request as well, not only after\nPTRACE_ATTACH. Please correct me if I\u0027m wrong.\n\nI want to use this hook on AVR32 to turn the debugging hardware on\nwhen a process is actually being debugged and keep it off otherwise.\nTo be able to do this, I need to intercept PTRACE_TRACEME and\nPTRACE_ATTACH, as well as PTRACE_DETACH and thread exit. The latter\ntwo can be handled by existing hooks.\n\nSigned-off-by: Haavard Skinnemoen \u003chskinnemoen@atmel.com\u003e\n" }, { "commit": "b8c9a18712f7b617fda66d878ce3759c9e575ba0", "tree": "95d4798a657b5267cf8e21e78a23aa7800a3bfcd", "parents": [ "831830b5a2b5d413407adf380ef62fe17d6fcbf2" ], "author": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Jan 02 13:48:27 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Jan 02 13:48:27 2008 -0800" }, "message": "Fix kernel/ptrace.c compile problem (missing \"may_attach()\")\n\nThe previous commit missed one use of \"may_attach()\" that had been\nrenamed to __ptrace_may_attach(). Tssk, tssk, Al.\n\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "831830b5a2b5d413407adf380ef62fe17d6fcbf2", "tree": "b08f54f15374b5b98b0b3bea20a1d2ea8d1f50e0", "parents": [ "ac40532ef0b8649e6f7f83859ea0de1c4ed08a19" ], "author": { "name": "Al Viro", "email": "viro@ZenIV.linux.org.uk", "time": "Wed Jan 02 14:09:57 2008 +0000" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed Jan 02 13:13:27 2008 -0800" }, "message": "restrict reading from /proc/\u003cpid\u003e/maps to those who share -\u003emm or can ptrace pid\n\nContents of /proc/*/maps is sensitive and may become sensitive after\nopen() (e.g. if target originally shares our -\u003emm and later does exec\non suid-root binary).\n\nCheck at read() (actually, -\u003estart() of iterator) time that mm_struct\nwe\u0027d grabbed and locked is\n - still the -\u003emm of target\n - equal to reader\u0027s -\u003emm or the target is ptracable by reader.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6618a3e275519e10001a2ac4669f46141d4c108b", "tree": "aee9f4dfc741c434e39fd9da057598dccebe1959", "parents": [ "d2f60e5faa9aef9a08d0abaee2007e5a0800d2c5" ], "author": { "name": "Matthew Wilcox", "email": "matthew@wil.cx", "time": "Thu Dec 06 11:06:16 2007 -0500" }, "committer": { "name": "Matthew Wilcox", "email": "willy@linux.intel.com", "time": "Thu Dec 06 17:34:52 2007 -0500" }, "message": "ptrace: Use task_is_*\n\nSigned-off-by: Matthew Wilcox \u003cwilly@linux.intel.com\u003e\n" }, { "commit": "bac0abd6174e427404dd197cdbefece31e97329b", "tree": "68ed6bd8619552c921c9fb99e83cb04fcb235a39", "parents": [ "19b9b9b54e5f115907efd56be2c3799775a46561" ], "author": { "name": "Pavel Emelyanov", "email": "xemul@openvz.org", "time": "Thu Oct 18 23:40:18 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Oct 19 11:53:40 2007 -0700" }, "message": "Isolate some explicit usage of task-\u003etgid\n\nWith pid namespaces this field is now dangerous to use explicitly, so hide\nit behind the helpers.\n\nAlso the pid and pgrp fields o task_struct and signal_struct are to be\ndeprecated. Unfortunately this patch cannot be sent right now as this\nleads to tons of warnings, so start isolating them, and deprecate later.\n\nActually the p-\u003etgid \u003d\u003d pid has to be changed to has_group_leader_pid(),\nbut Oleg pointed out that in case of posix cpu timers this is the same, and\nthread_group_leader() is more preferable.\n\nSigned-off-by: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nAcked-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Sukadev Bhattiprolu \u003csukadev@us.ibm.com\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": "228ebcbe634a30aec35132ea4375721bcc41bec0", "tree": "a875976fd5bde6e2f931aa235c34c88a2738493f", "parents": [ "b488893a390edfe027bae7a46e9af8083e740668" ], "author": { "name": "Pavel Emelyanov", "email": "xemul@openvz.org", "time": "Thu Oct 18 23:40:16 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Oct 19 11:53:40 2007 -0700" }, "message": "Uninline find_task_by_xxx set of functions\n\nThe find_task_by_something is a set of macros are used to find task by pid\ndepending on what kind of pid is proposed - global or virtual one. All of\nthem are wrappers above the most generic one - find_task_by_pid_type_ns() -\nand just substitute some args for it.\n\nIt turned out, that dereferencing the current-\u003ensproxy-\u003epid_ns construction\nand pushing one more argument on the stack inline cause kernel text size to\ngrow.\n\nThis patch moves all this stuff out-of-line into kernel/pid.c. Together\nwith the next patch it saves a bit less than 400 bytes from the .text\nsection.\n\nSigned-off-by: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Sukadev Bhattiprolu \u003csukadev@us.ibm.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nAcked-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": "b488893a390edfe027bae7a46e9af8083e740668", "tree": "c469a7f99ad01005a73011c029eb5e5d15454559", "parents": [ "3eb07c8c8adb6f0572baba844ba2d9e501654316" ], "author": { "name": "Pavel Emelyanov", "email": "xemul@openvz.org", "time": "Thu Oct 18 23:40:14 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Oct 19 11:53:40 2007 -0700" }, "message": "pid namespaces: changes to show virtual ids to user\n\nThis is the largest patch in the set. Make all (I hope) the places where\nthe pid is shown to or get from user operate on the virtual pids.\n\nThe idea is:\n - all in-kernel data structures must store either struct pid itself\n or the pid\u0027s global nr, obtained with pid_nr() call;\n - when seeking the task from kernel code with the stored id one\n should use find_task_by_pid() call that works with global pids;\n - when showing pid\u0027s numerical value to the user the virtual one\n should be used, but however when one shows task\u0027s pid outside this\n task\u0027s namespace the global one is to be used;\n - when getting the pid from userspace one need to consider this as\n the virtual one and use appropriate task/pid-searching functions.\n\n[akpm@linux-foundation.org: build fix]\n[akpm@linux-foundation.org: nuther build fix]\n[akpm@linux-foundation.org: yet nuther build fix]\n[akpm@linux-foundation.org: remove unneeded casts]\nSigned-off-by: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@openvz.org\u003e\nCc: Sukadev Bhattiprolu \u003csukadev@us.ibm.com\u003e\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Paul Menage \u003cmenage@google.com\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": "0ac15559150a20d39d381a6be44cdea373584222", "tree": "10be83ffe3197f029beffd242b7ddf21dcc25a35", "parents": [ "dab8f4963ae0a79b945b8ed297e30d390a9d9f50" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Tue Oct 16 01:26:37 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:43:04 2007 -0700" }, "message": "m32r: convert to generic sys_ptrace\n\nConvert m32r to the generic sys_ptrace. The conversion requires an\narchitecture hook after ptrace_attach which this patch adds. The hook\nwill also be needed for a conersion of ia64 to the generic ptrace code.\n\nThanks to Hirokazu Takata for fixing a bug in the first version of this\ncode.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Hirokazu Takata \u003ctakata@linux-m32r.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1bcf548293aef19b0797348332cf1dfbf2116cef", "tree": "80b2535e3dd2a6d23c15b91e10cae227310a44ee", "parents": [ "e6716b87d5c9edf19c711212785cd30c6ec21868" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@sw.ru", "time": "Tue Oct 16 01:23:45 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Oct 16 09:42:49 2007 -0700" }, "message": "Consolidate PTRACE_DETACH\n\nIdentical handlers of PTRACE_DETACH go into ptrace_request().\nNot touching compat code.\nNot touching archs that don\u0027t call ptrace_request.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@sw.ru\u003e\nAcked-by: Christoph Hellwig \u003chch@infradead.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7d94143291e4e625e2bc3b1ebdc7143ee7a9a2f1", "tree": "c4f8a974a33dd6ac1feacf18f217ee326c8af5eb", "parents": [ "897ee77bfba12b83752027427a41009961458ee6" ], "author": { "name": "Roland McGrath", "email": "roland@redhat.com", "time": "Wed Sep 05 03:05:56 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Sep 10 18:57:47 2007 -0700" }, "message": "Fix spurious syscall tracing after PTRACE_DETACH + PTRACE_ATTACH\n\nWhen PTRACE_SYSCALL was used and then PTRACE_DETACH is used, the\nTIF_SYSCALL_TRACE flag is left set on the formerly-traced task. This\nmeans that when a new tracer comes along and does PTRACE_ATTACH, it\u0027s\npossible he gets a syscall tracing stop even though he\u0027s never used\nPTRACE_SYSCALL. This happens if the task was in the middle of a system\ncall when the second PTRACE_ATTACH was done. The symptom is an\nunexpected SIGTRAP when the tracer thinks that only SIGSTOP should have\nbeen provoked by his ptrace calls so far.\n\nA few machines already fixed this in ptrace_disable (i386, ia64, m68k).\nBut all other machines do not, and still have this bug. On x86_64, this\nconstitutes a regression in IA32 compatibility support.\n\nSince all machines now use TIF_SYSCALL_TRACE for this, I put the\nclearing of TIF_SYSCALL_TRACE in the generic ptrace_detach code rather\nthan adding it to every other machine\u0027s ptrace_disable.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6c5d523826dc639df709ed0f88c5d2ce25379652", "tree": "ef2fa8cb30266b3a9b047902794e78c583b099da", "parents": [ "76fdbb25f963de5dc1e308325f0578a2f92b1c2d" ], "author": { "name": "Kawai, Hidehiro", "email": "hidehiro.kawai.ez@hitachi.com", "time": "Thu Jul 19 01:48:27 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jul 19 10:04:46 2007 -0700" }, "message": "coredump masking: reimplementation of dumpable using two flags\n\nThis patch changes mm_struct.dumpable to a pair of bit flags.\n\nset_dumpable() converts three-value dumpable to two flags and stores it into\nlower two bits of mm_struct.flags instead of mm_struct.dumpable.\nget_dumpable() behaves in the opposite way.\n\n[akpm@linux-foundation.org: export set_dumpable]\nSigned-off-by: Hidehiro Kawai \u003chidehiro.kawai.ez@hitachi.com\u003e\nCc: Alan Cox \u003calan@lxorguk.ukuu.org.uk\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f284ce7269031947326bac6bb19a977705276222", "tree": "8b145d42d4da182fb185dacc53b24ca7a2546114", "parents": [ "7664732315c97f48dba9d1e7339ad16fc5a320ac" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Tue Jul 17 04:03:44 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:03 2007 -0700" }, "message": "PTRACE_POKEDATA consolidation\n\nIdentical implementations of PTRACE_POKEDATA go into generic_ptrace_pokedata()\nfunction.\n\nAFAICS, fix bug on xtensa where successful PTRACE_POKEDATA will nevertheless\nreturn EPERM.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nCc: \u003clinux-arch@vger.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": "7664732315c97f48dba9d1e7339ad16fc5a320ac", "tree": "1eb9639b0fbe3f24341cecf1dafcae192cb7bde7", "parents": [ "bcdcd8e725b923ad7c0de809680d5d5658a7bf8c" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Tue Jul 17 04:03:43 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Jul 17 10:23:03 2007 -0700" }, "message": "PTRACE_PEEKDATA consolidation\n\nIdentical implementations of PTRACE_PEEKDATA go into generic_ptrace_peekdata()\nfunction.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nCc: \u003clinux-arch@vger.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": "6175ecfed3c81d388735c75f7a0ad08dc4de02d3", "tree": "83ac354507db40109bd114c233de2e7c36c92231", "parents": [ "e1f4a88c5a15a86124a95ea712213bb7dab2ad99" ], "author": { "name": "Sripathi Kodi", "email": "sripathik@in.ibm.com", "time": "Sun Jul 15 23:39:26 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:40 2007 -0700" }, "message": "Use write_trylock_irqsave in ptrace_attach\n\nThis patch makes ptrace_attach use write_trylock_irqsave().\n\n[akpm@linux-foundation.org: remove unneeded initialisation]\nSigned-off-by: Sripathi Kodi \u003csripathik@in.ibm.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: 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": "a5cb013da773a67ee48d1c19e96436c22a73a7eb", "tree": "8832d105c4742674423bd50352b8a4805c44fecc", "parents": [ "129a84de2347002f09721cda3155ccfd19fade40" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Mar 20 13:58:35 2007 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri May 11 05:38:25 2007 -0400" }, "message": "[PATCH] auditing ptrace\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "f400e198b2ed26ce55b22a1412ded0896e7516ac", "tree": "a3d78bfc1c20635e199fe0fe85aaa1d8792acc58", "parents": [ "959ed340f4867fda7684340625f60e211c2296d6" ], "author": { "name": "Sukadev Bhattiprolu", "email": "sukadev@us.ibm.com", "time": "Fri Sep 29 02:00:07 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Sep 29 09:18:12 2006 -0700" }, "message": "[PATCH] pidspace: is_init()\n\nThis is an updated version of Eric Biederman\u0027s is_init() patch.\n(http://lkml.org/lkml/2006/2/6/280). It applies cleanly to 2.6.18-rc3 and\nreplaces a few more instances of -\u003epid \u003d\u003d 1 with is_init().\n\nFurther, is_init() checks pid and thus removes dependency on Eric\u0027s other\npatches for now.\n\nEric\u0027s original description:\n\n\tThere are a lot of places in the kernel where we test for init\n\tbecause we give it special properties. Most significantly init\n\tmust not die. This results in code all over the kernel test\n\t-\u003epid \u003d\u003d 1.\n\n\tIntroduce is_init to capture this case.\n\n\tWith multiple pid spaces for all of the cases affected we are\n\tlooking for only the first process on the system, not some other\n\tprocess that has pid \u003d\u003d 1.\n\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nSigned-off-by: Sukadev Bhattiprolu \u003csukadev@us.ibm.com\u003e\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Serge Hallyn \u003cserue@us.ibm.com\u003e\nCc: Cedric Le Goater \u003cclg@fr.ibm.com\u003e\nCc: \u003clxc-devel@lists.sourceforge.net\u003e\nAcked-by: Paul Mackerras \u003cpaulus@samba.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "0ec76a110f432e98277e464b82ace8dd66571689", "tree": "3ed8de0ea6869fe17bec7689c493a2db02f73f4a", "parents": [ "361f6ed1d00f666a1a7c33f3e9aaccb713f9b9e4" ], "author": { "name": "David Howells", "email": "dhowells@redhat.com", "time": "Wed Sep 27 01:50:15 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 27 08:26:14 2006 -0700" }, "message": "[PATCH] NOMMU: Check that access_process_vm() has a valid target\n\nCheck that access_process_vm() is accessing a valid mapping in the target\nprocess.\n\nThis limits ptrace() accesses and accesses through /proc/\u003cpid\u003e/maps to only\nthose regions actually mapped by a program.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "36c8b586896f60cb91a4fd526233190b34316baf", "tree": "003246e1e676de33703daa979b3e3109ca202a89", "parents": [ "48f24c4da1ee7f3f22289cb85e8b8a73e4df4db5" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jul 03 00:25:41 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Jul 03 15:27:11 2006 -0700" }, "message": "[PATCH] sched: cleanup, remove task_t, convert to struct task_struct\n\ncleanup: remove task_t and convert all the uses to struct task_struct. I\nintroduced it for the scheduler anno and it was a mistake.\n\nConversion was mostly scripted, the result was reviewed and all\nsecondary whitespace and style impact (if any) was fixed up by hand.\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "d5f70c00ad24cd1158d3678b44ff969b4c971d49", "tree": "b4b71a71b413250fb24cb2d83cbbfd7507da9efc", "parents": [ "281de339ceb822ca6c04d4373ecb9a45c1890ce4" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Mon Jun 26 00:26:07 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Jun 26 09:58:27 2006 -0700" }, "message": "[PATCH] coredump: kill ptrace related stuff\n\nWith this patch zap_process() sets SIGNAL_GROUP_EXIT while sending SIGKILL to\nthe thread group. This means that a TASK_TRACED task\n\n\t1. Will be awakened by signal_wake_up(1)\n\n\t2. Can\u0027t sleep again via ptrace_notify()\n\n\t3. Can\u0027t go to do_signal_stop() after return\n\t from ptrace_stop() in get_signal_to_deliver()\n\nSo we can remove all ptrace related stuff from coredump path.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "df26c40e567356caeefe2861311e19c54444d917", "tree": "415527677e85e8b612b916f6fda1645a6207d8e2", "parents": [ "778c1144771f0064b6f51bee865cceb0d996f2f9" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Mon Jun 26 00:25:59 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Jun 26 09:58:26 2006 -0700" }, "message": "[PATCH] proc: Cleanup proc_fd_access_allowed\n\nIn process of getting proc_fd_access_allowed to work it has developed a few\nwarts. In particular the special case that always allows introspection and\nthe special case to allow inspection of kernel threads.\n\nThe special case for introspection is needed for /proc/self/mem.\n\nThe special case for kernel threads really should be overridable\nby security modules.\n\nSo consolidate these checks into ptrace.c:may_attach().\n\nThe check to always allow introspection is trivial.\n\nThe check to allow access to kernel threads, and zombies is a little\ntrickier. mem_read and mem_write already verify an mm exists so it isn\u0027t\nneeded twice. proc_fd_access_allowed only doesn\u0027t want a check to verify\ntask-\u003emm exits, s it prevents all access to kernel threads. So just move\nthe task-\u003emm check into ptrace_attach where it is needed for practical\nreasons.\n\nI did a quick audit and none of the security modules in the kernel seem to\ncare if they are passed a task without an mm into security_ptrace. So the\nabove move should be safe and it allows security modules to come up with\nmore restrictive policy.\n\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nCc: Stephen Smalley \u003csds@tycho.nsa.gov\u003e\nCc: Chris Wright \u003cchrisw@sous-sol.org\u003e\nCc: James Morris \u003cjmorris@namei.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f358166a9405e4f1d8e50d8f415c26d95505b6de", "tree": "7f5349d9e8b59633b9f8a7bd9bcd45ace1d21a41", "parents": [ "0e44dc383787b472a7f13564c6bd8a44cc07d408" ], "author": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Thu May 11 11:08:49 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Thu May 11 11:08:49 2006 -0700" }, "message": "ptrace_attach: fix possible deadlock schenario with irqs\n\nEric Biederman points out that we can\u0027t take the task_lock while holding\ntasklist_lock for writing, because another CPU that holds the task lock\nmight take an interrupt that then tries to take tasklist_lock for writing.\n\nWhich would be a nasty deadlock, with one CPU spinning forever in an\ninterrupt handler (although admittedly you need to really work at\ntriggering it ;)\n\nSince the ptrace_attach() code is special and very unusual, just make it\nbe extra careful, and use trylock+repeat to avoid the possible deadlock.\n\nCc: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f5b40e363ad6041a96e3da32281d8faa191597b9", "tree": "5f35453cff7acd5df5622a108381bbd011a383c5", "parents": [ "5528e568a760442e0ec8fd2dea1f0791875a066b" ], "author": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun May 07 10:49:33 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun May 07 10:49:33 2006 -0700" }, "message": "Fix ptrace_attach()/ptrace_traceme()/de_thread() race\n\nThis holds the task lock (and, for ptrace_attach, the tasklist_lock)\nover the actual attach event, which closes a race between attacking to a\nthread that is either doing a PTRACE_TRACEME or getting de-threaded.\n\nThanks to Oleg Nesterov for reminding me about this, and Chris Wright\nfor noticing a lost return value in my first version.\n\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e57a5059846e55d82b86d96dde40e988598601b3", "tree": "85b0f48406b37b46261735cbdd66e379977a0327", "parents": [ "c06511d12d720b23c8dffff23004f0a888698f20" ], "author": { "name": "Roland McGrath", "email": "roland@redhat.com", "time": "Wed Apr 12 16:30:20 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Apr 14 08:59:13 2006 -0700" }, "message": "[PATCH] fix non-leader exec under ptrace\n\nThis reverts most of commit 30e0fca6c1d7d26f3f2daa4dd2b12c51dadc778a.\nIt broke the case of non-leader MT exec when ptraced.\nI think the bug it was intended to fix was already addressed by commit\n788e05a67c343fa22f2ae1d3ca264e7f15c25eaf.\n\nSigned-off-by: Roland McGrath \u003croland@redhat.com\u003e\nAcked-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "524223ca8142d593124bde66f3ffa1deb6f56c06", "tree": "881d27c034459b931d8ba3adc0f1d2c8777fbf76", "parents": [ "9ba025f10885758975fbbc2292a5b9e7cb8026a8" ], "author": { "name": "Eric Sesterhenn", "email": "snakebyte@gmx.de", "time": "Sun Apr 02 13:43:40 2006 +0200" }, "committer": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Sun Apr 02 13:43:40 2006 +0200" }, "message": "BUG_ON() Conversion in kernel/ptrace.c\n\nthis changes if() BUG(); constructs to BUG_ON() which is\ncleaner, contains unlikely() and can better optimized away.\n\nSigned-off-by: Eric Sesterhenn \u003csnakebyte@gmx.de\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\n" }, { "commit": "9b678ece42893b53aae5ed7cb8d7cb261cacb72c", "tree": "2fc3cdcdc2940127885219b8d4142f8317b46bbd", "parents": [ "8fafabd86f1b75ed3cc6a6ffbe6c3e53e3d8457d" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Tue Mar 28 16:11:05 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Mar 28 18:36:41 2006 -0800" }, "message": "[PATCH] don\u0027t use REMOVE_LINKS/SET_LINKS for reparenting\n\nThere are places where kernel uses REMOVE_LINKS/SET_LINKS while changing\nprocess\u0027s -\u003eparent. Use add_parent/remove_parent instead, they don\u0027t abuse\nof global process list.\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "5ecfbae093f0c37311e89b29bfc0c9d586eace87", "tree": "eabd0a145af64e26c900578c95175ab313828661", "parents": [ "dadac81b1b86196fcc48fb87620403c4a7174f06" ], "author": { "name": "Oleg Nesterov", "email": "oleg@tv-sign.ru", "time": "Wed Feb 15 22:50:10 2006 +0300" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Feb 15 11:05:43 2006 -0800" }, "message": "[PATCH] fix zap_thread\u0027s ptrace related problems\n\n1. The tracee can go from ptrace_stop() to do_signal_stop()\n after __ptrace_unlink(p).\n\n2. It is unsafe to __ptrace_unlink(p) while p-\u003eparent may wait\n for tasklist_lock in ptrace_detach().\n\nSigned-off-by: Oleg Nesterov \u003coleg@tv-sign.ru\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "16bf134840da3920ded1290973c56ec214636f12", "tree": "1aacddb873bd383030a65e13e78c2ced38edfa23", "parents": [ "d98c7a09843621f1b145ca5ae8ed03ff04085edb" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Tue Feb 14 13:52:59 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Feb 14 16:09:33 2006 -0800" }, "message": "[PATCH] compound page: no access_process_vm check\n\nThe PageCompound check before access_process_vm\u0027s set_page_dirty_lock is no\nlonger necessary, so remove it. But leave the PageCompound checks in\nbio_set_pages_dirty, dio_bio_complete and nfs_free_user_pages: at least some\nof those were introduced as a little optimization on hugetlb pages.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "c59ede7b78db329949d9cdcd7064e22d357560ef", "tree": "f9dc9d464fdad5bfd464d983e77c1af031389dda", "parents": [ "e16885c5ad624a6efe1b1bf764e075d75f65a788" ], "author": { "name": "Randy.Dunlap", "email": "rdunlap@xenotime.net", "time": "Wed Jan 11 12:17:46 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Jan 11 18:42:13 2006 -0800" }, "message": "[PATCH] move capable() to capability.h\n\n- Move capable() from sched.h to capability.h;\n\n- Use \u003clinux/capability.h\u003e where capable() is used\n\t(in include/, block/, ipc/, kernel/, a few drivers/,\n\tmm/, security/, \u0026 sound/;\n\tmany more drivers/ to go)\n\nSigned-off-by: Randy Dunlap \u003crdunlap@xenotime.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "6b9c7ed84837753a436415097063232422e29a35", "tree": "6ad59a7bebcec359e08b3a211701781db819450d", "parents": [ "6b34350f490b2c8508717541ec1fd2bbaadded94" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Sun Jan 08 01:02:33 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Jan 08 20:13:51 2006 -0800" }, "message": "[PATCH] use ptrace_get_task_struct in various places\n\nThe ptrace_get_task_struct() helper that I added as part of the ptrace\nconsolidation is useful in variety of places that currently opencode it.\nSwitch them to the common helpers.\n\nAdd a ptrace_traceme() helper that needs to be explicitly called, and simplify\nthe ptrace_get_task_struct() interface. We don\u0027t need the request argument\nnow, and we return the task_struct directly, using ERR_PTR() for error\nreturns. It\u0027s a bit more code in the callers, but we have two sane routines\nthat do one thing well now.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "5bd0190bf3d7e53043a048e809ffa29d41b9d6ac", "tree": "c6fba8d5a532ecfa53dc97a3841d13d972964854", "parents": [ "df69a60dc6afc2936d79054d30b481c1fd9720e5" ], "author": { "name": "David Gibson", "email": "david@gibson.dropbear.id.au", "time": "Tue Nov 29 19:34:32 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Nov 29 19:47:03 2005 -0800" }, "message": "[PATCH] Fix crash when ptrace poking hugepage areas\n\nset_page_dirty() will not cope with being handed a page * which is part of\na compound page, but not the master page in that compound page. This case\ncan occur via access_process_vm() if you attemp to write to another\nprocess\u0027s hugepage memory area using ptrace() (causing an oops or hang).\n\nThis patch fixes the bug by only calling set_page_dirty() from\naccess_process_vm() if the page is not a compound page. We already use a\nsimilar fix in bio_set_pages_dirty() for the case of direct io to\nhugepages.\n\nSigned-off-by: David Gibson \u003cdavid@gibson.dropbear.id.au\u003e\nAcked-by: William Irwin \u003cwli@holomorphy.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "005f18dfd0ed86c39716277b61dfb4bd2af91059", "tree": "8425228dc52bb38a5fe85d52afaecacca2f3a6fd", "parents": [ "ab767201881fec073157986c314485ab26caa4a0" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Sun Nov 13 16:06:33 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Nov 13 18:14:11 2005 -0800" }, "message": "[PATCH] fix task_struct leak in ptrace\n\nWhen ptrace_attach fails we need to drop the task_struct reference.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "28d838cc4dfea980cb6eda0a7409cbf91889ca74", "tree": "4bbf42063718ac7744ca67ef9f67adce17bfbb5c", "parents": [ "ac111bfaa6b0b3c0edc63c27bd9617d6b08851ff" ], "author": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Nov 09 11:33:07 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Nov 09 11:33:07 2005 -0800" }, "message": "Fix ptrace self-attach rule\n\nBefore we did CLONE_THREAD, the way to check whether we were attaching\nto ourselves was to just check \"current \u003d\u003d task\", but with CLONE_THREAD\nwe should check that the thread group ID matches instead.\n\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "481bed454247538e9f57d4ea37b153ccba24ba7b", "tree": "bb4198296962c08dbf52e8f377dc27206f621640", "parents": [ "db73e9aa99bf093427b79877f9475392724fd5e5" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Mon Nov 07 00:59:47 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Nov 07 07:53:42 2005 -0800" }, "message": "[PATCH] consolidate sys_ptrace()\n\nThe sys_ptrace boilerplate code (everything outside the big switch\nstatement for the arch-specific requests) is shared by most architectures.\nThis patch moves it to kernel/ptrace.c and leaves the arch-specific code as\narch_ptrace.\n\nSome architectures have a too different ptrace so we have to exclude them.\nThey continue to keep their implementations. For sh64 I had to add a\nsh64_ptrace wrapper because it does some initialization on the first call.\nFor um I removed an ifdefed SUBARCH_PTRACE_SPECIAL block, but\nSUBARCH_PTRACE_SPECIAL isn\u0027t defined anywhere in the tree.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nAcked-by: Paul Mackerras \u003cpaulus@samba.org\u003e\nAcked-by: Ralf Baechle \u003cralf@linux-mips.org\u003e\nAcked-By: David Howells \u003cdhowells@redhat.com\u003e\nAcked-by: Russell King \u003crmk+kernel@arm.linux.org.uk\u003e\nAcked-by: Paul Mundt \u003clethal@linux-sh.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "30e0fca6c1d7d26f3f2daa4dd2b12c51dadc778a", "tree": "945004584995e3af816125245bbb2436cc8ebc9e", "parents": [ "68860ec10bcc07ab4f89f9d940e3b77ae5ca13b3" ], "author": { "name": "Andrea Arcangeli", "email": "andrea@suse.de", "time": "Sun Oct 30 15:02:38 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Oct 30 17:37:22 2005 -0800" }, "message": "[PATCH] ptrace/coredump/exit_group deadlock\n\nI could seldom reproduce a deadlock with a task not killable in T state\n(TASK_STOPPED, not TASK_TRACED) by attaching a NPTL threaded program to\ngdb, by segfaulting the task and triggering a core dump while some other\ntask is executing exit_group and while one task is in ptrace_attached\nTASK_STOPPED state (not TASK_TRACED yet). This originated from a gdb\nbugreport (the fact gdb was segfaulting the task wasn\u0027t a kernel bug), but\nI just incidentally noticed the gdb bug triggered a real kernel bug as\nwell.\n\nMost threads hangs in exit_mm because the core_dumping is still going, the\ncore dumping hangs because the stopped task doesn\u0027t exit, the stopped task\ncan\u0027t wakeup because it has SIGNAL_GROUP_EXIT set, hence the deadlock.\n\nTo me it seems that the problem is that the force_sig_specific(SIGKILL) in\nzap_threads is a noop if the task has PF_PTRACED set (like in this case\nbecause gdb is attached). The __ptrace_unlink does nothing because the\nsignal-\u003eflags is set to SIGNAL_GROUP_EXIT|SIGNAL_STOP_DEQUEUED (verified).\n\nThe above info also shows that the stopped task hit a race and got the stop\nsignal (presumably by the ptrace_attach, only the attach, state is still\nTASK_STOPPED and gdb hangs waiting the core before it can set it to\nTASK_TRACED) after one of the thread invoked the core dump (it\u0027s the core\ndump that sets signal-\u003eflags to SIGNAL_GROUP_EXIT).\n\nSo beside the fact nobody would wakeup the task in __ptrace_unlink (the\nstate is _not_ TASK_TRACED), there\u0027s a secondary problem in the signal\nhandling code, where a task should ignore the ptrace-sigstops as long as\nSIGNAL_GROUP_EXIT is set (or the wakeup in __ptrace_unlink path wouldn\u0027t be\nenough).\n\nSo I attempted to make this patch that seems to fix the problem. There\nwere various ways to fix it, perhaps you prefer a different one, I just\nopted to the one that looked safer to me.\n\nI also removed the clearing of the stopped bits from the zap_other_threads\n(zap_other_threads was safe unlike zap_threads). I don\u0027t like useless\ncode, this whole NPTL signal/ptrace thing is already unreadable enough and\nfull of corner cases without confusing useless code into it to make it even\nless readable. And if this code is really needed, then you may want to\nexplain why it\u0027s not being done in the other paths that sets\nSIGNAL_GROUP_EXIT at least.\n\nEven after this patch I still wonder who serializes the read of\np-\u003eptrace in zap_threads.\n\nPatch is called ptrace-core_dump-exit_group-deadlock-1.\n\nThis was the trace I\u0027ve got:\n\ntest T ffff81003e8118c0 0 14305 1 14311 14309 (NOTLB)\nffff810058ccdde8 0000000000000082 000001f4000037e1 ffff810000000013\n 00000000000000f8 ffff81003e811b00 ffff81003e8118c0 ffff810011362100\n 0000000000000012 ffff810017ca4180\nCall Trace:\u003cffffffff801317ed\u003e{try_to_wake_up+893} \u003cffffffff80141677\u003e{finish_stop+87}\n \u003cffffffff8014367f\u003e{get_signal_to_deliver+1359} \u003cffffffff8010d3ad\u003e{do_signal+157}\n \u003cffffffff8013deee\u003e{ptrace_check_attach+222} \u003cffffffff80111575\u003e{sys_ptrace+2293}\n \u003cffffffff80131810\u003e{default_wake_function+0} \u003cffffffff80196399\u003e{sys_ioctl+73}\n \u003cffffffff8010dd27\u003e{sysret_signal+28} \u003cffffffff8010e00f\u003e{ptregscall_common+103}\n\ntest D ffff810011362100 0 14309 1 14305 14312 (NOTLB)\nffff810053c81cf8 0000000000000082 0000000000000286 0000000000000001\n 0000000000000195 ffff810011362340 ffff810011362100 ffff81002e338040\n ffff810001e0ca80 0000000000000001\nCall Trace:\u003cffffffff801317ed\u003e{try_to_wake_up+893} \u003cffffffff8044677d\u003e{wait_for_completion+173}\n \u003cffffffff80131810\u003e{default_wake_function+0} \u003cffffffff80137435\u003e{exit_mm+149}\n \u003cffffffff801381af\u003e{do_exit+479} \u003cffffffff80138d0c\u003e{do_group_exit+252}\n \u003cffffffff801436db\u003e{get_signal_to_deliver+1451} \u003cffffffff8010d3ad\u003e{do_signal+157}\n \u003cffffffff8013deee\u003e{ptrace_check_attach+222} \u003cffffffff80140850\u003e{specific_send_sig_info+2\n\n \u003cffffffff8014208a\u003e{force_sig_info+186} \u003cffffffff804479a0\u003e{do_int3+112}\n \u003cffffffff8010e308\u003e{retint_signal+61}\ntest D ffff81002e338040 0 14311 1 14716 14305 (NOTLB)\nffff81005ca8dcf8 0000000000000082 0000000000000286 0000000000000001\n 0000000000000120 ffff81002e338280 ffff81002e338040 ffff8100481cb740\n ffff810001e0ca80 0000000000000001\nCall Trace:\u003cffffffff801317ed\u003e{try_to_wake_up+893} \u003cffffffff8044677d\u003e{wait_for_completion+173}\n \u003cffffffff80131810\u003e{default_wake_function+0} \u003cffffffff80137435\u003e{exit_mm+149}\n \u003cffffffff801381af\u003e{do_exit+479} \u003cffffffff80142d0e\u003e{__dequeue_signal+558}\n \u003cffffffff80138d0c\u003e{do_group_exit+252} \u003cffffffff801436db\u003e{get_signal_to_deliver+1451}\n \u003cffffffff8010d3ad\u003e{do_signal+157} \u003cffffffff8013deee\u003e{ptrace_check_attach+222}\n \u003cffffffff80140850\u003e{specific_send_sig_info+208} \u003cffffffff8014208a\u003e{force_sig_info+186}\n \u003cffffffff804479a0\u003e{do_int3+112} \u003cffffffff8010e308\u003e{retint_signal+61}\n\ntest D ffff810017ca4180 0 14312 1 14309 13882 (NOTLB)\nffff81005d15fcb8 0000000000000082 ffff81005d15fc58 ffffffff80130816\n 0000000000000897 ffff810017ca43c0 ffff810017ca4180 ffff81003e8118c0\n 0000000000000082 ffffffff801317ed\nCall Trace:\u003cffffffff80130816\u003e{activate_task+150} \u003cffffffff801317ed\u003e{try_to_wake_up+893}\n \u003cffffffff8044677d\u003e{wait_for_completion+173} \u003cffffffff80131810\u003e{default_wake_function+0}\n \u003cffffffff8018cdc3\u003e{do_coredump+819} \u003cffffffff80445f52\u003e{thread_return+82}\n \u003cffffffff801436d4\u003e{get_signal_to_deliver+1444} \u003cffffffff8010d3ad\u003e{do_signal+157}\n \u003cffffffff8013deee\u003e{ptrace_check_attach+222} \u003cffffffff80140850\u003e{specific_send_sig_info+2\n\n \u003cffffffff804472e5\u003e{_spin_unlock_irqrestore+5} \u003cffffffff8014208a\u003e{force_sig_info+186}\n \u003cffffffff804476ff\u003e{do_general_protection+159} \u003cffffffff8010e308\u003e{retint_signal+61}\n\nSigned-off-by: Andrea Arcangeli \u003candrea@suse.de\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Linus Torvalds \u003ctorvalds@osdl.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "ab8d11beb46f0bd0617e04205c01f5c1fe845b61", "tree": "33b5aa5b63268b8f4d1428d74547fd351bb37113", "parents": [ "5e21ccb136047e556acf0fdf227cab5db05c1c25" ], "author": { "name": "Miklos Szeredi", "email": "miklos@szeredi.hu", "time": "Tue Sep 06 15:18:24 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Sep 07 16:57:43 2005 -0700" }, "message": "[PATCH] remove duplicated code from proc and ptrace\n\nExtract common code used by ptrace_attach() and may_ptrace_attach()\ninto a separate function.\n\nSigned-off-by: Miklos Szeredi \u003cmiklos@szeredi.hu\u003e\nCc: \u003cviro@parcelfarce.linux.theplanet.co.uk\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" } ], "next": "7ed20e1ad521b5f5df61bf6559ae60738e393741" }