[Freeswitch-users] FreeSWITCH crash due to Signal 6 Abort while executing assert in nua_stack.c

Wed Dec 13 14:31:32 UTC 2017

Bug reports go to https://freeswitch.org/jira not the mailing list

From: FreeSWITCH-users [mailto:freeswitch-users-bounces at lists.freeswitch.org] On Behalf Of Shaun Stokes
Sent: Wednesday, December 13, 2017 6:11 AM
To: FreeSWITCH Users Help <freeswitch-users at lists.freeswitch.org>
Subject: Re: [Freeswitch-users] FreeSWITCH crash due to Signal 6 Abort while executing assert in nua_stack.c

FYI.

FreeSWITCH version 1.6.19

Debian 8.9

  _____  

From: FreeSWITCH-users <freeswitch-users-bounces at lists.freeswitch.org <mailto:freeswitch-users-bounces at lists.freeswitch.org> > on behalf of Shaun Stokes <shaun.stokes at itec-support.co.uk <mailto:shaun.stokes at itec-support.co.uk> >
Sent: 13 December 2017 11:48
To: FreeSWITCH Users Help
Subject: [Freeswitch-users] FreeSWITCH crash due to Signal 6 Abort while executing assert in nua_stack.c 

Hi,

Recently experienced a crash (Signal 6 Abort) on FreeSWITCH, daemon log as follows.

systemd[1]: freeswitch.service: main process exited, code=killed, status=6/ABRT

fs_cli[5866]: [ERROR] fs_cli.c:1659 main() Error Connecting [Socket Connection Error]

systemd[1]: freeswitch.service: control process exited, code=exited status=255

systemd[1]: Unit freeswitch.service entered failed state.

systemd[1]: freeswitch.service holdoff time over, scheduling restart.

systemd[1]: Stopping freeswitch...

systemd[1]: Starting freeswitch...

We don't have the FreeSWITCH logs for this particular incident, back-trace as follows.

================================================================================

# bt full

================================================================================

#0  0x00007f6b05f79067 in __GI_raise (sig=sig at entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56

        resultvar = 0

        pid = 20383

        selftid = 20402

#1  0x00007f6b05f7a448 in __GI_abort () at abort.c:89

        save_stage = 2

        act = {__sigaction_handler = {sa_handler = 0x7fff30339e75, sa_sigaction = 0x7fff30339e75}, sa_mask = {__val = {140097639576617, 140097517785411, 959, 4, 140097512340528, 0, 140096967610088, 4294967296, 0, 0, 0, 21474836480, 140097639576143, 140097512340680, 140097676636160, 140097639591704}}, sa_flags = -20442716, sa_restorer = 0x7f6afec8139a <__PRETTY_FUNCTION__.16073>}

        sigs = {__val = {32, 0 <repeats 15 times>}}

#2  0x00007f6b05f72266 in __assert_fail_base (fmt=0x7f6b060aaf18 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion at entry=0x7f6afec811a4 "*nh->nh_prev == nh", file=file at entry=0x7f6afec81143 "nua_stack.c", line=line at entry=959, function=function at entry=0x7f6afec8139a <__PRETTY_FUNCTION__.16073> "nh_remove") at assert.c:92

        str = 0x7f67e44770f0 ""

        total = 4096

#3  0x00007f6b05f72312 in __GI___assert_fail (assertion=assertion at entry=0x7f6afec811a4 "*nh->nh_prev == nh", file=file at entry=0x7f6afec81143 "nua_stack.c", line=line at entry=959, function=function at entry=0x7f6afec8139a <__PRETTY_FUNCTION__.16073> "nh_remove") at assert.c:101

No locals.

#4  0x00007f6afebf3a36 in nh_remove (nua=0x7f6aec019e70, nh=0x7f6adfb244a0) at nua_stack.c:959

No locals.

#5  nh_destroy (nua=0x7f6aec019e70, nh=0x7f6adfb244a0) at nua_stack.c:998

        nh = 0x7f6adfb244a0

        nua = 0x7f6aec019e70

#6  0x00007f6afebf4ba5 in nua_stack_destroy_handle (tags=<optimized out>, nh=<optimized out>, nua=<optimized out>) at nua_stack.c:660

No locals.

#7  nua_stack_signal (nua=0x7f6aec019e70, msg=0x31, ee=0x7f6ac401fba8) at nua_stack.c:661

        nh = 0x7f6adfb244a0

        tags = 0x7f6ac401fbd0

        event = nua_r_destroy

        error = 0

        __func__ = "nua_stack_signal"

#8  0x00007f6afec276d2 in su_base_port_execute_msgs (queue=0x7f67ea5624b0) at su_base_port.c:280

        root = <optimized out>

        f = <optimized out>

        msg = 0x0

        n = 12

#9  0x00007f6afec27bcd in su_base_port_run (self=0x7f6adc0008c0) at su_base_port.c:335

        tout = 15000

        tout2 = 0

        __PRETTY_FUNCTION__ = "su_base_port_run"

#10 0x00007f6afec2c900 in su_pthread_port_clone_main (varg=0x7f6afea2e750) at su_pthread_port.c:343

        arg = 0x0

        task = {{sut_port = 0x7f6adc0008c0, sut_root = 0x7f6adc001130}}

        zap = 1

#11 0x00007f6b062f7064 in start_thread (arg=0x7f6afe750700) at pthread_create.c:309

        __res = <optimized out>

        pd = 0x7f6afe750700

        now = <optimized out>

        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140097512343296, 1338962068899872702, 0, 140097676709984, 27192672, 140097512343296, -1422840606975082562, -1422294471635779650}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}

        not_first_call = <optimized out>

        pagesize_m1 = <optimized out>

        sp = <optimized out>

        freesize = <optimized out>

        __PRETTY_FUNCTION__ = "start_thread"

#12 0x00007f6b0602c62d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

No locals.

Essentially it failed on 'assert(*nh->nh_prev == nh);' while executing this function in 'nua_stack.c'.

###############

/** @internal Remove a handle from list of handles */

static

void nh_remove(nua_t *nua, nua_handle_t *nh)

{

  assert(nh_is_inserted(nh)); assert(*nh->nh_prev == nh);

  if (nh->nh_next)

    nh->nh_next->nh_prev = nh->nh_prev;

  else

    nua->nua_handles_tail = nh->nh_prev;

  *nh->nh_prev = nh->nh_next;

  nh->nh_prev = NULL;

  nh->nh_next = NULL;

}

###############

It's difficult for us to understand the exact cause with-out a copy of the logs, if anyone has seem something similar or might be able to point us in the right direction we would be greatful.

Thanks,

S

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