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| author | Matt Morehouse <mascasa@google.com> | 2019-05-09 21:50:57 +0000 |
|---|---|---|
| committer | Matt Morehouse <mascasa@google.com> | 2019-05-09 21:50:57 +0000 |
| commit | a612b5adb7a63b10736134cb7b8e70f1614883be (patch) | |
| tree | c1c8b4c7f19936b7b65dafc662a7c49fdc3f20d9 /compiler-rt/include | |
| parent | e9aaa5582fa164e8fbcf819c672c02f5f5448e6c (diff) | |
| download | bcm5719-llvm-a612b5adb7a63b10736134cb7b8e70f1614883be.tar.gz bcm5719-llvm-a612b5adb7a63b10736134cb7b8e70f1614883be.zip | |
[MSan] Introduce __msan_unpoison_param().
Summary:
This allows libFuzzer to unpoison parameter shadow before calling
LLVMFuzzerTestOneInput to eliminate the false positives described
in https://github.com/google/oss-fuzz/issues/2369.
Reviewers: eugenis
Reviewed By: eugenis
Subscribers: llvm-commits, metzman, kcc
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D61751
llvm-svn: 360379
Diffstat (limited to 'compiler-rt/include')
| -rw-r--r-- | compiler-rt/include/sanitizer/msan_interface.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/compiler-rt/include/sanitizer/msan_interface.h b/compiler-rt/include/sanitizer/msan_interface.h index 5c5363f5ca6..d40c556a46d 100644 --- a/compiler-rt/include/sanitizer/msan_interface.h +++ b/compiler-rt/include/sanitizer/msan_interface.h @@ -42,6 +42,9 @@ extern "C" { contents). */ void __msan_unpoison_string(const volatile char *a); + /* Make first n parameters of the next function call fully initialized. */ + void __msan_unpoison_param(size_t n); + /* Make memory region fully uninitialized (without changing its contents). This is a legacy interface that does not update origin information. Use __msan_allocated_memory() instead. */ |
