Module Name: src
Committed By: kamil
Date: Fri Sep 11 01:04:34 UTC 2020
Modified Files:
src/external/gpl3/gcc/dist/libsanitizer/asan: asan_interceptors.h
src/external/gpl3/gcc/dist/libsanitizer/lsan: lsan_interceptors.cc
src/external/gpl3/gcc/dist/libsanitizer/sanitizer_common:
sanitizer_platform_interceptors.h
Log Message:
Stop tracking atexit/__cxa_atexit/pthread_atfork allocations in LSan/NetBSD
Cherry-pick and adapt:
commit 8827047551570b7ed7088765c3de2a8cce6823b8
Author: Kamil Rytarowski <n...@gmx.com>
Date: Sat Sep 21 07:30:42 2019 +0000
Stop tracking atexit/__cxa_atexit/pthread_atfork allocations in LSan/NetBSD
Summary:
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.
Non-NetBSD OSs are not tested and this code is restricted to NetBSD only.
Reviewers: dvyukov, joerg, mgorny, vitalybuka, eugenis
Reviewed By: vitalybuka
Subscribers: jfb, llvm-commits, #sanitizers
Tags: #sanitizers, #llvm
Differential Revision: https://reviews.llvm.org/D67331
llvm-svn: 372459
To generate a diff of this commit:
cvs rdiff -u -r1.6 -r1.7 \
src/external/gpl3/gcc/dist/libsanitizer/asan/asan_interceptors.h
cvs rdiff -u -r1.6 -r1.7 \
src/external/gpl3/gcc/dist/libsanitizer/lsan/lsan_interceptors.cc
cvs rdiff -u -r1.8 -r1.9 \
src/external/gpl3/gcc/dist/libsanitizer/sanitizer_common/sanitizer_platform_interceptors.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
