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| author | Vitaly Buka <vitalybuka@google.com> | 2016-08-22 04:16:14 +0000 |
|---|---|---|
| committer | Vitaly Buka <vitalybuka@google.com> | 2016-08-22 04:16:14 +0000 |
| commit | 0672a27bb5d30f7349cd6370baac91c47e0a045f (patch) | |
| tree | cea4ac834ea45e67481198887e229c0fb8b09358 | |
| parent | ca0eda3e6a4d4a514fda93c1380407c3632d1fbf (diff) | |
| download | bcm5719-llvm-0672a27bb5d30f7349cd6370baac91c47e0a045f.tar.gz bcm5719-llvm-0672a27bb5d30f7349cd6370baac91c47e0a045f.zip | |
[asan] Use 1 byte aligned stores to poison shadow memory
Summary: r279379 introduced crash on arm 32bit bot. I suspect this is alignment issue.
Reviewers: eugenis
Subscribers: llvm-commits, aemerson
Differential Revision: https://reviews.llvm.org/D23762
llvm-svn: 279413
| -rw-r--r-- | llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp b/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp index 7bf958eb82c..53dd96e205c 100644 --- a/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp +++ b/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp @@ -2011,8 +2011,8 @@ void FunctionStackPoisoner::poisonStackFrameInline( Value *Ptr = IRB.CreateAdd(ShadowBase, ConstantInt::get(IntptrTy, i)); Value *Poison = IRB.getIntN(StoreSizeInBytes * 8, Val); - IRB.CreateStore(Poison, - IRB.CreateIntToPtr(Ptr, Poison->getType()->getPointerTo())); + IRB.CreateAlignedStore( + Poison, IRB.CreateIntToPtr(Ptr, Poison->getType()->getPointerTo()), 1); i += StoreSizeInBytes; } |
