(gdb) print pd->start_routine
$1 = (void *(*)(void *)) 0x7f48700b60bd <log_thread>
(gdb) frame 2
#2 0x00007f48700b611b in log_thread (et=0x0) at log_pthread.c:57
57 flush_logqueue();
(gdb) list
52 while (1) {
53 pthread_mutex_lock(logev_lock);
54 pthread_cond_wait(logev_cond, logev_lock);
55 pthread_mutex_unlock(logev_lock);
56
57 flush_logqueue();
58 }
59 return NULL;
60 }
61
(gdb) frame 1
#1 0x00007f48700b606e in flush_logqueue () at log_pthread.c:39
39 pthread_mutex_lock(logq_lock);
(gdb) list
34 static void flush_logqueue (void)
35 {
36 int empty;
37
38 do {
39 pthread_mutex_lock(logq_lock);
40 empty = log_dequeue(la->buff);
41 pthread_mutex_unlock(logq_lock);
42 if (!empty)
43 log_syslog(la->buff);
(gdb) print logq_lock
$2 = (pthread_mutex_t *) 0x0
(gdb) frame 2
#2 0x00007f48700b611b in log_thread (et=0x0) at log_pthread.c:57
57 flush_logqueue();
(gdb) print logev_lock
$3 = (pthread_mutex_t *) 0x0
(gdb) print logev_cond
$4 = (pthread_cond_t *) 0x0
>From pthread implementation:
/* Lock a mutex. */
extern int pthread_mutex_lock (pthread_mutex_t *__mutex)
__THROWNL __nonnull ((1));
# define __THROWNL __attribute__ ((__nothrow__))
# define __nonnull(params) __attribute__ ((__nonnull__ params))
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https://bugs.launchpad.net/bugs/1687004
Title:
multipath crash generating core dump
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