https://bugs.kde.org/show_bug.cgi?id=494327
Bug ID: 494327
Summary: Crash when building Helgrind with #define
TRACE_PTH_FNS 1
Classification: Developer tools
Product: valgrind
Version: 3.24 GIT
Platform: Other
OS: FreeBSD
Status: REPORTED
Severity: normal
Priority: NOR
Component: helgrind
Assignee: jsew...@acm.org
Reporter: pjfl...@wanadoo.fr
Target Milestone: ---
I get this segfault:
==68279== Process terminating with default action of signal 11 (SIGSEGV):
dumping core
==68279== Bad permissions for mapped region at address 0x1FFEDFFFF8
==68279== at 0x49B4F5C: vfprintf_l (in /lib/libc.so.7)
==68279== by 0x49ADA3E: fprintf (in /lib/libc.so.7)
==68279== by 0x4857A7E: mutex_lock_WRK (hg_intercepts.c:931)
==68279== by 0x49AB6D6: flockfile (in /lib/libc.so.7)
==68279== by 0x49B4FB1: vfprintf_l (in /lib/libc.so.7)
==68279== by 0x49ADA3E: fprintf (in /lib/libc.so.7)
==68279== by 0x4857A7E: mutex_lock_WRK (hg_intercepts.c:931)
==68279== by 0x49AB6D6: flockfile (in /lib/libc.so.7)
==68279== by 0x49B4FB1: vfprintf_l (in /lib/libc.so.7)
==68279== by 0x49ADA3E: fprintf (in /lib/libc.so.7)
==68279== by 0x4857A7E: mutex_lock_WRK (hg_intercepts.c:931)
==68279== by 0x49AB6D6: flockfile (in /lib/libc.so.7)
The code
static int mutex_lock_WRK(pthread_mutex_t *mutex)
{
int ret;
OrigFn fn;
VALGRIND_GET_ORIG_FN(fn);
if (TRACE_PTH_FNS) {
fprintf(stderr, "<< pthread_mxlock %p", mutex); fflush(stderr);
}
My guess here is that FreeBSD libc fprintf makes a call to pthread_mutex_lock
with the result that the code gets stuck in infinite recursion.
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