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| author | Peter Wu <peter@lekensteyn.nl> | 2017-05-04 14:03:57 +0000 |
|---|---|---|
| committer | Peter Wu <peter@lekensteyn.nl> | 2017-05-04 14:03:57 +0000 |
| commit | daf4d1dbabac3085ea44745f44decc99449e5771 (patch) | |
| tree | 8ff875318833eee220d6c190cdfe15ddd0992f97 /lib/asan/asan_interceptors.h | |
| parent | 6bae4bb552040cae850681707c0c2f8d65a0b023 (diff) | |
[ASAN] Add interceptor for __longjmp_chk
Summary:
glibc on Linux calls __longjmp_chk instead of longjmp (or _longjmp) when
_FORTIFY_SOURCE is defined. Ensure that an ASAN-instrumented program
intercepts this function when a system library calls it, otherwise the
stack might remain poisoned and result in CHECK failures and false
positives.
Fixes https://github.com/google/sanitizers/issues/721
Reviewed By: eugenis
Differential Revision: https://reviews.llvm.org/D32408
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@302152 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/asan/asan_interceptors.h')
| -rw-r--r-- | lib/asan/asan_interceptors.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/asan/asan_interceptors.h b/lib/asan/asan_interceptors.h index d747c31a5..93fca4f67 100644 --- a/lib/asan/asan_interceptors.h +++ b/lib/asan/asan_interceptors.h @@ -58,6 +58,12 @@ # define ASAN_INTERCEPT_SIGLONGJMP 0 #endif +#if SANITIZER_LINUX && !SANITIZER_ANDROID +# define ASAN_INTERCEPT___LONGJMP_CHK 1 +#else +# define ASAN_INTERCEPT___LONGJMP_CHK 0 +#endif + // Android bug: https://code.google.com/p/android/issues/detail?id=61799 #if ASAN_HAS_EXCEPTIONS && !SANITIZER_WINDOWS && \ !(SANITIZER_ANDROID && defined(__i386)) |