From c5e7f5624966aa4a83869ca4fceb4d7b96a22d34 Mon Sep 17 00:00:00 2001 From: Evgeniy Stepanov Date: Mon, 15 Jul 2019 20:02:23 +0000 Subject: ARM MTE stack sanitizer. Add "memtag" sanitizer that detects and mitigates stack memory issues using armv8.5 Memory Tagging Extension. It is similar in principle to HWASan, which is a software implementation of the same idea, but there are enough differencies to warrant a new sanitizer type IMHO. It is also expected to have very different performance properties. The new sanitizer does not have a runtime library (it may grow one later, along with a "debugging" mode). Similar to SafeStack and StackProtector, the instrumentation pass (in a follow up change) will be inserted in all cases, but will only affect functions marked with the new sanitize_memtag attribute. Reviewers: pcc, hctim, vitalybuka, ostannard Subscribers: srhines, mehdi_amini, javed.absar, kristof.beyls, hiraditya, cryptoad, steven_wu, dexonsmith, cfe-commits, llvm-commits Tags: #clang, #llvm Differential Revision: https://reviews.llvm.org/D64169 llvm-svn: 366123 --- llvm/lib/Transforms/Utils/CodeExtractor.cpp | 1 + 1 file changed, 1 insertion(+) (limited to 'llvm/lib/Transforms/Utils') diff --git a/llvm/lib/Transforms/Utils/CodeExtractor.cpp b/llvm/lib/Transforms/Utils/CodeExtractor.cpp index da137da8f7b..fa6d3f8ae87 100644 --- a/llvm/lib/Transforms/Utils/CodeExtractor.cpp +++ b/llvm/lib/Transforms/Utils/CodeExtractor.cpp @@ -850,6 +850,7 @@ Function *CodeExtractor::constructFunction(const ValueSet &inputs, case Attribute::SanitizeMemory: case Attribute::SanitizeThread: case Attribute::SanitizeHWAddress: + case Attribute::SanitizeMemTag: case Attribute::SpeculativeLoadHardening: case Attribute::StackProtect: case Attribute::StackProtectReq: -- cgit v1.2.3