71 lines
1.7 KiB
Plaintext
71 lines
1.7 KiB
Plaintext
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
|