[PATCH] D27228: Release memory to OS only when the requested range covers the entire page

[Aleksey Shlyapnikov via Phabricator via llvm-commits]

alekseyshl created this revision.
alekseyshl added a reviewer: eugenis.
alekseyshl added a subscriber: llvm-commits.
Herald added a subscriber: kubabrecka.

The current code was sometimes attempting to release huge chunks of
memory due to undesired RoundUp/RoundDown interaction when the requested
range is fully contained within one memory page.


https://reviews.llvm.org/D27228

Files:
  lib/asan/asan_poisoning.cc
  lib/asan/asan_poisoning.h
  lib/msan/msan_allocator.cc
  lib/sanitizer_common/sanitizer_allocator_primary64.h
  lib/sanitizer_common/sanitizer_common.h
  lib/sanitizer_common/sanitizer_posix_libcdep.cc
  lib/sanitizer_common/sanitizer_win.cc
  lib/tsan/rtl/tsan_platform_linux.cc
  lib/tsan/rtl/tsan_rtl.cc
  lib/tsan/rtl/tsan_rtl_thread.cc

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