llvm-project

Commit Graph

Author	SHA1	Message	Date
Jianzhou Zhao	79debe8d7b	[dfsan] Turn off all dfsan test cases on non x86_64 OSs https://reviews.llvm.org/D101666 enables sanitizer allocator. This broke all test cases on non x86-64.	2021-05-05 05:30:53 +00:00
Matt Morehouse	bb3a3da38d	[DFSan] Don't unmap during dfsan_flush(). Unmapping and remapping is dangerous since another thread could touch the shadow memory while it is unmapped. But there is really no need to unmap anyway, since mmap(MAP_FIXED) will happily clobber the existing mapping with zeroes. This is thread-safe since the mmap() is done under the same kernel lock as page faults are done. Reviewed By: vitalybuka Differential Revision: https://reviews.llvm.org/D85947	2020-08-14 11:43:49 -07:00

Author

SHA1

Message

Date

Jianzhou Zhao

79debe8d7b

[dfsan] Turn off all dfsan test cases on non x86_64 OSs

https://reviews.llvm.org/D101666 enables sanitizer allocator.
This broke all test cases on non x86-64.

2021-05-05 05:30:53 +00:00

Matt Morehouse

bb3a3da38d

[DFSan] Don't unmap during dfsan_flush().

Unmapping and remapping is dangerous since another thread could touch
the shadow memory while it is unmapped.  But there is really no need to
unmap anyway, since mmap(MAP_FIXED) will happily clobber the existing
mapping with zeroes.  This is thread-safe since the mmap() is done under
the same kernel lock as page faults are done.

Reviewed By: vitalybuka

Differential Revision: https://reviews.llvm.org/D85947

2020-08-14 11:43:49 -07:00

2 Commits