commit 636ffdcefbc2ce7671a3f489d9b0ab3769c270b4
author Peter Collingbourne <peter@pcc.me.uk> Mon Jan 27 18:43:46 2020 -0800
committer Copybara-Service <copybara-worker@google.com> Thu Aug 27 23:57:55 2020 -0700
tree 384557c42b3f7f487386f94240e1b78705310c87
parent 9622645aab50c672d37dfca9dad191856046f744

scudo: Add support for diagnosing memory errors when memory tagging is enabled.

Introduce a function __scudo_get_error_info() that may be called to interpret
a crash resulting from a memory error, potentially in another process,
given information extracted from the crashing process. The crash may be
interpreted as a use-after-free, buffer overflow or buffer underflow.

Also introduce a feature to optionally record a stack trace for each
allocation and deallocation. If this feature is enabled, a stack trace for
the allocation and (if applicable) the deallocation will also be available
via __scudo_get_error_info().

Differential Revision: https://reviews.llvm.org/D77283

GitOrigin-RevId: 21d50019ca83765a655b3d67331dfb83cf3d260d