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| author | Kostya Serebryany <kcc@google.com> | 2012-03-08 22:25:08 +0000 |
|---|---|---|
| committer | Kostya Serebryany <kcc@google.com> | 2012-03-08 22:25:08 +0000 |
| commit | f7fc1d48595d946929908c2fb3658450b2a2cebe (patch) | |
| tree | 6d6f49b9b6c7a13984bbefd15dc2bc18c7435ece /compiler-rt/lib/asan/asan_stack.cc | |
| parent | 3bc40c5feee50214deba0a77ddc43443cff449f6 (diff) | |
| download | bcm5719-llvm-f7fc1d48595d946929908c2fb3658450b2a2cebe.tar.gz bcm5719-llvm-f7fc1d48595d946929908c2fb3658450b2a2cebe.zip | |
[asan]: fix off-by-one error in stack unwinder (asan issue #44; reproduced thanks to 'csmith' fuzzer)
llvm-svn: 152347
Diffstat (limited to 'compiler-rt/lib/asan/asan_stack.cc')
| -rw-r--r-- | compiler-rt/lib/asan/asan_stack.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler-rt/lib/asan/asan_stack.cc b/compiler-rt/lib/asan/asan_stack.cc index 5dabc04a6f7..c3bca80542c 100644 --- a/compiler-rt/lib/asan/asan_stack.cc +++ b/compiler-rt/lib/asan/asan_stack.cc @@ -69,7 +69,7 @@ void AsanStackTrace::FastUnwindStack(uintptr_t pc, uintptr_t bp) { uintptr_t *top = (uintptr_t*)t->stack_top(); uintptr_t *bottom = (uintptr_t*)t->stack_bottom(); while (frame >= prev_frame && - frame < top && + frame < top - 2 && frame > bottom && size < max_size) { uintptr_t pc1 = frame[1]; |
