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3 Commits

Author SHA1 Message Date
Evgeniy Stepanov 080e0d40b9 [hwasan] An LLVM flag to disable stack tag randomization. 
Summary: Necessary to achieve consistent test results.

Reviewers: kcc, alekseyshl

Subscribers: kubamracek, llvm-commits, hiraditya

Differential Revision: https://reviews.llvm.org/D42023

llvm-svn: 322429
 2018-01-13 01:32:15 +00:00
Evgeniy Stepanov 29e3f5b722 [hwasan] An option to disable tag randomization. 
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

llvm-svn: 322214
 2018-01-10 19:36:10 +00:00
Evgeniy Stepanov 9595d16893 Hardware-assisted AddressSanitizer (compiler-rt) 
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

llvm-svn: 320231
 2017-12-09 01:31:51 +00:00