)]}'
{
  "commit": "734beec3d48a7ea5cfe3bd0815676181ea698cc7",
  "tree": "4a288b288b56d549c23e25166de6be1b86729c79",
  "parents": [
    "83590680649dc04ce8a98cd85b6356e1d6066564"
  ],
  "author": {
    "name": "Peter Collingbourne",
    "email": "pcc@google.com",
    "time": "Wed Nov 14 12:41:41 2018 -0800"
  },
  "committer": {
    "name": "Peter Collingbourne",
    "email": "pcc@google.com",
    "time": "Fri Nov 16 14:37:08 2018 -0800"
  },
  "message": "Allocate a small guard region around the shadow call stack.\n\nThis lets us do two things:\n\n1) Make setjmp and longjmp compatible with shadow call stack.\n   To avoid leaking the shadow call stack address into memory, only the\n   lower log2(SCS_SIZE) bits of x18 are stored to jmp_buf. This requires\n   allocating an additional guard page so that we\u0027re guaranteed to be\n   able to allocate a sufficiently aligned SCS.\n\n2) SCS overflow detection. Overflows now result in a SIGSEGV instead\n   of corrupting the allocation that comes after it.\n\nChange-Id: I04d6634f96162bf625684672a87fba8b402b7fd1\nTest: bionic-unit-tests\n",
  "tree_diff": [
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      "new_path": "libc/arch-arm64/bionic/setjmp.S"
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      "new_path": "tests/Android.bp"
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}