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Disable test added in D47798 on Android and investigate why "new"
behaves differently there.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@334255 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Currently many allocator specific errors (OOM, for example) are reported as
a text message and CHECK(0) termination, not stack, no details, not too
helpful nor informative. To improve the situation, detailed and
structured errors were defined and reported under the appropriate conditions.
Reviewers: eugenis
Subscribers: kubamracek, delcypher, llvm-commits, #sanitizers
Differential Revision: https://reviews.llvm.org/D47798
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@334248 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
"N" suffix is added by the instrumentation and interface functions
are expected to be exported from the library as __hwasan_loadN* and
__hwasan_storeN*.
Reviewers: eugenis
Subscribers: kubamracek, delcypher, #sanitizers, llvm-commits
Differential Revision: https://reviews.llvm.org/D45739
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@330297 91177308-0d34-0410-b5e6-96231b3b80d8
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To minimize testing surface (remove libstdc++ from the picture, for
one), make use-after-free c, not c++ test.
Differential Revision: https://reviews.llvm.org/D44705
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@328646 91177308-0d34-0410-b5e6-96231b3b80d8
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Relax use-after-free.cc test matching rules to cover more malloc/free
interceptor names variations.
Differential Revision: https://reviews.llvm.org/D44705
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@328630 91177308-0d34-0410-b5e6-96231b3b80d8
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Differential Revision: https://reviews.llvm.org/D44705
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@328407 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary: Necessary to achieve consistent test results.
Reviewers: kcc, alekseyshl
Subscribers: kubamracek, llvm-commits, hiraditya
Differential Revision: https://reviews.llvm.org/D42023
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@322429 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Very basic stack instrumentation using tagged pointers.
Tag for N'th alloca in a function is built as XOR of:
* base tag for the function, which is just some bits of SP (poor
man's random)
* small constant which is a function of N.
Allocas are aligned to 16 bytes. On every ReturnInst allocas are
re-tagged to catch use-after-return.
This implementation has a bunch of issues that will be taken care of
later:
1. lifetime intrinsics referring to tagged pointers are not
recognized in SDAG. This effectively disables stack coloring.
2. Generated code is quite inefficient. There is one extra
instruction at each memory access that adds the base tag to the
untagged alloca address. It would be better to keep tagged SP in a
callee-saved register and address allocas as an offset of that XOR
retag, but that needs better coordination between hwasan
instrumentation pass and prologue/epilogue insertion.
3. Lifetime instrinsics are ignored and use-after-scope is not
implemented. This would be harder to do than in ASan, because we
need to use a differently tagged pointer depending on which
lifetime.start / lifetime.end the current instruction is dominated
/ post-dominated.
Reviewers: kcc, alekseyshl
Subscribers: srhines, kubamracek, javed.absar, hiraditya, llvm-commits
Differential Revision: https://reviews.llvm.org/D41602
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@322324 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Avoid flaky test failures by by using a monotonic number sequence of
heap tags.
Does not affect stack tags: the way we generate those guarantees
uniqueness for at least 30-something first allocas in any function,
as well as the UAR tag.
Reviewers: alekseyshl, kcc
Subscribers: llvm-commits, kubamracek
Differential Revision: https://reviews.llvm.org/D41882
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@322214 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary: Very similar to AddressSanitizer, with the exception of the error type encoding.
Reviewers: kcc, alekseyshl
Subscribers: cfe-commits, kubamracek, llvm-commits, hiraditya
Differential Revision: https://reviews.llvm.org/D41417
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@321203 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@321141 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@321121 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@321119 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary: This brings CPU overhead on bzip2 down from 5.5x to 2x.
Reviewers: kcc, alekseyshl
Subscribers: kubamracek, hiraditya, llvm-commits
Differential Revision: https://reviews.llvm.org/D41137
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@320538 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Runtime library for HWASan, initial commit.
Does not randomize tags yet, does not handle stack or globals.
Reviewers: kcc, pcc, alekseyshl
Subscribers: srhines, kubamracek, dberris, mgorny, llvm-commits, krytarowski
Differential Revision: https://reviews.llvm.org/D40935
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@320231 91177308-0d34-0410-b5e6-96231b3b80d8
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