3 Commits

Author	SHA1	Message	Date
Jianzhou Zhao	1fb612d060	[dfsan] Add a DFSan allocator ... This is a part of https://reviews.llvm.org/D101204 Reviewed By: morehouse Differential Revision: https://reviews.llvm.org/D101666	2021-05-05 00:51:45 +00:00
Jianzhou Zhao	4e67ae7b6b	[dfsan] Add origin ABI wrappers for thread/signal/fork ... This is a part of https://reviews.llvm.org/D95835. See bb91e02efd about the similar issue of fork in MSan's origin tracking. Reviewed By: morehouse Differential Revision: https://reviews.llvm.org/D98359	2021-03-15 16:18:00 +00:00
Jianzhou Zhao	0f3fd3b281	[dfsan] Add thread registration ... This is a part of https://reviews.llvm.org/D95835. This change is to address two problems 1) When recording stacks in origin tracking, libunwind is not async signal safe. Inside signal callbacks, we need to use fast unwind. Fast unwind needs threads 2) StackDepot used by origin tracking is not async signal safe, we set a flag per thread inside a signal callback to prevent from using it. The thread registration is similar to ASan and MSan. Related MSan changes are * 98f5ea0dba * f653cda269 * 5a7c364343 Some changes in the diff are used in the next diffs 1) The test case pthread.c is not very interesting for now. It will be extended to test origin tracking later. 2) DFsanThread::InSignalHandler will be used by origin tracking later. Reviewed-by: morehouse Differential Revision: https://reviews.llvm.org/D95963	2021-02-05 17:38:59 +00:00