Sporadic crashes with some applications in RHEL-5.4 or later when _MALLOC_CHECK_ environment variable is set
Issue
- Sporadic crashes with some applications in RHEL-5.4 or later when MALLOC_CHECK_ environment variable is set
- The crashes stop when the following chunk is reversed in glibc-expmalloc2.patch:
if(!mem) return;
- (void)mutex_lock(&main_arena.mutex);
p = mem2chunk_check(mem, NULL);
if(!p) {
- (void)mutex_unlock(&main_arena.mutex);
Environment
- Red Hat Enterprise Linux 5.4 or later
- glibc-2.5-42 or later
- MALLOC_CHECK_ environment variable is set
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