glibc/tests/Regression/bz585674-free-race-in-mcheck-hooks/main.fmf
2022-07-08 10:41:28 +00:00

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summary: Test for bz585674 (free() race in mcheck hooks)
description: |
Bug summary: free() race in mcheck hooks
Bugzilla link: https://bugzilla.redhat.com/show_bug.cgi?id=585674
Description:
Description of problem:
segfaults can occur with MEMCHECK_ALLOC_=3 enabled. This was reported and fixed upstream at
http://sourceware.org/bugzilla/show_bug.cgi?id=10282
http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=cc49a5a8837be1f9307b167d9bf4399798a847c9
Version-Release number of selected component (if applicable):
glibc-2.5-49
How reproducible:
every time
Steps to Reproduce:
1. cat malloc_test.c
#include <stdlib.h>
#include <unistd.h>
int main(void)
{
#pragma omp parallel num_threads(256)
while (1) {
void *ptr = malloc(rand() % 65536);
usleep((rand() % 100) * 100);
free(ptr);
usleep((rand() % 100) * 100);
}
return 0;
}
2. gcc -fopenmp -g -o malloc_check malloc_check.c
3. MALLOC_CHECK_=3 ./malloc_test
Actual results:
malloc: using debugging hooks
*** glibc detected *** ./malloc_test: free(): invalid pointer: 0x00000000043e9c90 ***
Expected results:
no segfaults
Additional info:
contact: Petr Muller <pmuller@redhat.com>
component:
- glibc
test: ./runtest.sh
framework: beakerlib
recommend:
- glibc
- gcc
- libgomp
tag:
- simple
- tier1_mfranc
- mfranc_stable
- noEWA
- Tier1
- not-er15271
- glibc-buildroot-ready
duration: 90m
link:
- relates: https://bugzilla.redhat.com/show_bug.cgi?id=585674
extra-summary: /tools/glibc/Regression/bz585674-free-race-in-mcheck-hooks
extra-task: /tools/glibc/Regression/bz585674-free-race-in-mcheck-hooks