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authorKostya Kortchinsky <kostyak@google.com>2017-08-28 15:20:02 +0000
committerKostya Kortchinsky <kostyak@google.com>2017-08-28 15:20:02 +0000
commitd74a5ec19dabe0cb290087d973d54291cfa68ad1 (patch)
treec342b9f4a8bfe87ff97ef333de4d02b5278dda68 /cmake
parent5824d872dfe59e2a65e2b6a8e4d69b2d06d6d001 (diff)
[sanitizer] Re-introduce kUseSeparateSizeClassForBatch for the 32-bit Primary
Summary: Currently `TransferBatch` are located within the same memory regions as "regular" chunks. This is not ideal for security: they make for an interesting target to overwrite, and are not protected by the frontend (namely, Scudo). To solve this, we re-introduce `kUseSeparateSizeClassForBatch` for the 32-bit Primary allowing for `TransferBatch` to end up in their own memory region. Currently only Scudo would use this new feature, the default behavior remains unchanged. The separate `kBatchClassID` was used for a brief period of time previously but removed when the 64-bit ended up using the "free array". Reviewers: alekseyshl, kcc, eugenis Reviewed By: alekseyshl Subscribers: llvm-commits, kubamracek Differential Revision: https://reviews.llvm.org/D37082 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@311891 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'cmake')
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