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libs: fix race in pcep lib

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Fix a race in the libpcep timer code; reported by coverity.

Signed-off-by: Mark Stapp <mjs@voltanet.io>
This commit is contained in:
Mark Stapp 2021-03-25 09:56:11 -04:00
parent 7c94e3d606
commit cdcb405119
1 changed files with 7 additions and 4 deletions
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11
pceplib/pcep_timers.c
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@ -457,10 +457,17 @@ void pceplib_external_timer_expire_handler(void *data)
}
pcep_timer *timer = (pcep_timer *)data;
pthread_mutex_lock(&timers_context_->timer_list_lock);
ordered_list_node *timer_node =
ordered_list_find2(timers_context_->timer_list, timer,
timer_list_node_timer_ptr_compare);
/* Remove timer from list */
if (timer_node)
ordered_list_remove_node2(timers_context_->timer_list,
timer_node);
pthread_mutex_unlock(&timers_context_->timer_list_lock);
/* Cannot continue if the timer does not exist */
@ -474,9 +481,5 @@ void pceplib_external_timer_expire_handler(void *data)
timers_context_->expire_handler(timer->data, timer->timer_id);
pthread_mutex_lock(&timers_context_->timer_list_lock);
ordered_list_remove_node2(timers_context_->timer_list, timer_node);
pthread_mutex_unlock(&timers_context_->timer_list_lock);
pceplib_free(PCEPLIB_INFRA, timer);
}