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| author | Matt Morehouse <mascasa@google.com> | 2019-05-09 22:48:46 +0000 |
|---|---|---|
| committer | Matt Morehouse <mascasa@google.com> | 2019-05-09 22:48:46 +0000 |
| commit | 8d9c46f942cd628947f4209bedc0a2f47115ec31 (patch) | |
| tree | a019a5defb0756cf328e9da0051913897bb89337 /lib/fuzzer/FuzzerExtFunctions.def | |
| parent | 87743d8a94e5b8a2f08d5345b27326b8fcb80d9e (diff) | |
| download | compiler-rt-8d9c46f942cd628947f4209bedc0a2f47115ec31.tar.gz | |
[libFuzzer] Unpoison parameters before calling user callback.
Summary:
Fixes an MSan false positive when compiling with
-fsanitize=memory,fuzzer.
See https://github.com/google/oss-fuzz/issues/2369 for more details.
Reviewers: kcc
Reviewed By: kcc
Subscribers: llvm-commits, metzman, eugenis
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D61753
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@360390 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/fuzzer/FuzzerExtFunctions.def')
| -rw-r--r-- | lib/fuzzer/FuzzerExtFunctions.def | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/fuzzer/FuzzerExtFunctions.def b/lib/fuzzer/FuzzerExtFunctions.def index 288a59ce3..41fa0fd2b 100644 --- a/lib/fuzzer/FuzzerExtFunctions.def +++ b/lib/fuzzer/FuzzerExtFunctions.def @@ -46,3 +46,4 @@ EXT_FUNC(__sanitizer_set_report_fd, void, (void*), false); EXT_FUNC(__msan_scoped_disable_interceptor_checks, void, (), false); EXT_FUNC(__msan_scoped_enable_interceptor_checks, void, (), false); EXT_FUNC(__msan_unpoison, void, (const volatile void *, size_t size), false); +EXT_FUNC(__msan_unpoison_param, void, (size_t n), false); |