[PATCH] D43318: [asan] Be more careful and verbose when allocating dynamic shadow memory

[Kuba (Brecka) Mracek via Phabricator via llvm-commits]

kubamracek created this revision.
kubamracek added reviewers: delcypher, kcc, george.karpenkov, eugenis, filcab, fjricci.
kubamracek added a project: Sanitizers.
Herald added a subscriber: Sanitizers.

FindAvailableMemoryRange can currently overwrite existing memory (by restricting the VM below addresses that are already used). This patch adds a check to make sure we don't restrict the VM space too much. We are also now more explicit about why the lookup failed and print out verbose values.


Repository:
  rCRT Compiler Runtime

https://reviews.llvm.org/D43318

Files:
  lib/asan/asan_mac.cc
  lib/sanitizer_common/sanitizer_common.h
  lib/sanitizer_common/sanitizer_linux.cc
  lib/sanitizer_common/sanitizer_mac.cc
  lib/sanitizer_common/sanitizer_win.cc

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