diff options
| author | Kostya Kortchinsky <kostyak@google.com> | 2017-07-31 18:45:17 +0000 |
|---|---|---|
| committer | Kostya Kortchinsky <kostyak@google.com> | 2017-07-31 18:45:17 +0000 |
| commit | 84b9dd08af3cabe2c588ea9775c42575da45fd40 (patch) | |
| tree | 166cd621141fd6d0396154c8c63560500a105f4d /lib/msan/tests | |
| parent | f0878f1e7f4e67ed9c574ccd8b82093a201928e9 (diff) | |
[msan] Check for pvalloc overflow
Summary:
`CheckForPvallocOverflow` was introduced with D35818 to detect when pvalloc
would wrap when rounding up to the next multiple of the page size.
Add this check to MSan's pvalloc implementation.
Reviewers: alekseyshl
Reviewed By: alekseyshl
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D36093
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@309601 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/msan/tests')
| -rw-r--r-- | lib/msan/tests/msan_test.cc | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/msan/tests/msan_test.cc b/lib/msan/tests/msan_test.cc index b2d5f7c60..b4cc8493a 100644 --- a/lib/msan/tests/msan_test.cc +++ b/lib/msan/tests/msan_test.cc @@ -3449,6 +3449,17 @@ TEST(MemorySanitizer, pvalloc) { EXPECT_EQ(0U, (uintptr_t)p % PageSize); EXPECT_EQ(PageSize, __sanitizer_get_allocated_size(p)); free(p); + + // Overflows in pvalloc should be caught. + errno = 0; + p = pvalloc((uintptr_t)-PageSize); + EXPECT_EQ(p, nullptr); + EXPECT_EQ(errno, ENOMEM); + + errno = 0; + p = pvalloc((uintptr_t)-1); + EXPECT_EQ(p, nullptr); + EXPECT_EQ(errno, ENOMEM); } #endif |