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| author | Matthias Krüger <matthias.krueger@famsik.de> | 2022-02-18 23:23:03 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-02-18 23:23:03 +0100 |
| commit | 0bb72a2c66d0daa417baa27eaf2d276d835b87a2 (patch) | |
| tree | 7a60885694e580e76b90562ba1df9557837151e6 /compiler/rustc_llvm/llvm-wrapper | |
| parent | f8b83a2aa60d60b60386ef460071261963c8b988 (diff) | |
| parent | 568aeda9e955ca2a4c043bc2ae7f854e60f6103a (diff) | |
| download | rust-0bb72a2c66d0daa417baa27eaf2d276d835b87a2.tar.gz rust-0bb72a2c66d0daa417baa27eaf2d276d835b87a2.zip | |
Rollup merge of #91675 - ivanloz:memtagsan, r=nagisa
Add MemTagSanitizer Support Add support for the LLVM [MemTagSanitizer](https://llvm.org/docs/MemTagSanitizer.html). On hardware which supports it (see caveats below), the MemTagSanitizer can catch bugs similar to AddressSanitizer and HardwareAddressSanitizer, but with lower overhead. On a tag mismatch, a SIGSEGV is signaled with code SEGV_MTESERR / SEGV_MTEAERR. # Usage `-Zsanitizer=memtag -C target-feature="+mte"` # Comments/Caveats * MemTagSanitizer is only supported on AArch64 targets with hardware support * Requires `-C target-feature="+mte"` * LLVM MemTagSanitizer currently only performs stack tagging. # TODO * Tests * Example
Diffstat (limited to 'compiler/rustc_llvm/llvm-wrapper')
| -rw-r--r-- | compiler/rustc_llvm/llvm-wrapper/LLVMWrapper.h | 1 | ||||
| -rw-r--r-- | compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp | 2 |
2 files changed, 3 insertions, 0 deletions
diff --git a/compiler/rustc_llvm/llvm-wrapper/LLVMWrapper.h b/compiler/rustc_llvm/llvm-wrapper/LLVMWrapper.h index 9e0a9b354e1..a2b0e9b4d29 100644 --- a/compiler/rustc_llvm/llvm-wrapper/LLVMWrapper.h +++ b/compiler/rustc_llvm/llvm-wrapper/LLVMWrapper.h @@ -83,6 +83,7 @@ enum LLVMRustAttribute { StackProtectStrong = 31, StackProtect = 32, NoUndef = 33, + SanitizeMemTag = 34, }; typedef struct OpaqueRustString *RustStringRef; diff --git a/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp b/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp index 23333199506..c8f31adbfd9 100644 --- a/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp +++ b/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp @@ -226,6 +226,8 @@ static Attribute::AttrKind fromRust(LLVMRustAttribute Kind) { return Attribute::StackProtect; case NoUndef: return Attribute::NoUndef; + case SanitizeMemTag: + return Attribute::SanitizeMemTag; } report_fatal_error("bad AttributeKind"); } |