[PATCH] D48097: [TSan] Fix madvise(MADV_NOHUGEPAGE) for meta shadow memory

[Aleksey Shlyapnikov via Phabricator via llvm-commits]

alekseyshl created this revision.
alekseyshl added a reviewer: dvyukov.
Herald added subscribers: Sanitizers, delcypher, kubamracek.

Move madvise(MADV_NOHUGEPAGE) for the meta shadow memory after the meta
shadow memory is mapped (currently it silently fails with ENOMEM).

Add a diagnostic message to detect similar problems in the future.


Repository:
  rCRT Compiler Runtime

https://reviews.llvm.org/D48097

Files:
  lib/sanitizer_common/sanitizer_common.h
  lib/sanitizer_common/sanitizer_posix_libcdep.cc
  lib/sanitizer_common/sanitizer_win.cc
  lib/tsan/rtl/tsan_platform_posix.cc

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