Re: Segfault in timer.c

[Ross Beer <ross.beer@xxxxxxxxxxx>]

Hello,

The previous segfault was with issue #2176 (https://trac.pjsip.org/repos/changeset/5934) patch applied, this patch appears to increase the frequency of segfaults in the 'pj_timer_heap_poll' process instead of mitigating them.

Can anyone offer assistance in getting this resolved?

Regards,

Ross

---

From: pjsip <pjsip-bounces@xxxxxxxxxxxxxxx> on behalf of Ross Beer <ross.beer@xxxxxxxxxxx>
Sent: 08 April 2019 17:05
To: pjsip@xxxxxxxxxxxxxxx
Subject: Segfault in timer.c

 

Hi,

We are seeing multiple segfaults while copying nodes:

Thread 1 (Thread 0x7fa977fff700 (LWP 36699)):

#0  0x00007fac956676fe in copy_node (ht=0x16d0410, slot=430, moved_node=0x7fa9c4c04c50) at ../src/pj/timer.c:137

#1  0x00007fac956679d9 in reheap_down (ht=0x16d0410, moved_node=0x7fab60031970, slot=430, child=862) at ../src/pj/timer.c:185

#2  0x00007fac95667d1d in remove_node (ht=0x16d0410, slot=0) at ../src/pj/timer.c:252

        parent = 0

        moved_node = 0x7fab60031970

        removed_node = 0x7fa9b5978ae0

#3  0x00007fac95668634 in pj_timer_heap_poll (ht=0x16d0410, next_delay=0x7fa977ffecd0) at ../src/pj/timer.c:634

        node = 0x100000002

        grp_lock = 0x31dc8c88

        now = {sec = 8157205, msec = 523}

        count = 0

#4  0x00007fac955b6b06 in pjsip_endpt_handle_events2 (endpt=0x16d0128, max_timeout=0x7fa977ffed40, p_count=0x0) at ../src/pjsip/sip_endpoint.c:715

        timeout = {sec = 0, msec = 0}

        count = 0

        net_event_count = 0

        c = 0

#5  0x00007fac955b6c4b in pjsip_endpt_handle_events (endpt=0x16d0128, max_timeout=0x7fa977ffed40) at ../src/pjsip/sip_endpoint.c:776

#6  0x00007faac8024bcf in monitor_thread_exec (endpt=0x0) at res_pjsip.c:4512

        delay = {sec = 0, msec = 10}

#7  0x00007fac9564fcb0 in thread_main (param=0x1815b28) at ../src/pj/os_core_unix.c:541

        rec = 0x1815b28

        result = 0x0

        rc = 0

#8  0x00007fac9342ddd5 in start_thread () at /usr/lib64/libpthread.so.0

#9  0x00007fac927cfead in clone () at /usr/lib64/libc.so.6

Can anyone assist in resolving the issue?

Regards,

Ross

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