[PATCH] D67331: Stop tracking atexit/__cxa_atexit/pthread_atfork allocations in LSan/NetBSD

[Kamil Rytarowski via Phabricator via llvm-commits]

krytarowski created this revision.
krytarowski added reviewers: dvyukov, joerg, mgorny, vitalybuka.
krytarowski added a project: Sanitizers.
Herald added subscribers: llvm-commits, jfb.
Herald added a project: LLVM.

The atexit(3) and __cxa_atexit() calls allocate internally memory and free on exit,
after executing all callback. This causes false positives as DoLeakCheck() is called
from the atexit handler. In the LSan/ASan tests there are strict checks triggering
false positives here.

Intercept all atexit(3) and __cxa_atexit() calls and disable LSan when calling the
real functions.

Stop tracing allocations in pthread_atfork(3) funtions, as there are performed
internal allocations that are not freed for the time of running StopTheWorld()
code. This avoids false-positives.

The same changes have to be replicated in the ASan and LSan runtime.


Repository:
  rL LLVM

https://reviews.llvm.org/D67331

Files:
  lib/asan/asan_interceptors.cpp
  lib/lsan/lsan_interceptors.cpp

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