Thread 75 "accel-pppd" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff218e700 (LWP 21413)]
0x00007ffff79af415 in __list_add (new=0x7fffbc50d2e8, prev=0x26f904ef93d59fdf, next=0x7fffa4221690) at /home/fabed/accel-ppp/accel-pppd/include/list.h:47
47		prev->next = new;
(gdb) bt full
#0  0x00007ffff79af415 in __list_add (new=0x7fffbc50d2e8, prev=0x26f904ef93d59fdf, next=0x7fffa4221690) at /home/fabed/accel-ppp/accel-pppd/include/list.h:47
No locals.
#1  0x00007ffff79af469 in list_add_tail (new=0x7fffbc50d2e8, head=0x7fffa4221690) at /home/fabed/accel-ppp/accel-pppd/include/list.h:73
No locals.
#2  0x00007ffff79b03c9 in fail_log (t=0x7ffff79b4280 <fail_log_target>, msg=0x7fffbc50d2e8, ses=0x7fffe80eb658) at /home/fabed/accel-ppp/accel-pppd/logs/log_file.c:356
        fpd = 0x7fffa4221678
#3  0x0000555555583988 in do_log (level=5, fmt=0x55555558889d "ipv6cp_layer_free\n", ap=0x7ffff218d960, ses=0x7fffe80eb658) at /home/fabed/accel-ppp/accel-pppd/log.c:109
        t = 0x7ffff79b4280 <fail_log_target>
        m = 0x7fffbc50d2e8
#4  0x0000555555584498 in log_ppp_debug (fmt=0x55555558889d "ipv6cp_layer_free\n") at /home/fabed/accel-ppp/accel-pppd/log.c:230
        ap = {{gp_offset = 8, fp_offset = 48, overflow_arg_area = 0x7ffff218da40, reg_save_area = 0x7ffff218d980}}
#5  0x000055555556dbf5 in ipv6cp_layer_free (ld=0x7fffe8214b78) at /home/fabed/accel-ppp/accel-pppd/ppp/ppp_ipv6cp.c:167
        ipv6cp = 0x7fffe8214b78
#6  0x000055555556194c in _free_layers (ppp=0x7fffe80eb658) at /home/fabed/accel-ppp/accel-pppd/ppp/ppp.c:702
        n = 0x7fffe820fed8
        d = 0x7fffe8214b78
#7  0x0000555555560159 in destroy_ppp_channel (ppp=0x7fffe80eb658) at /home/fabed/accel-ppp/accel-pppd/ppp/ppp.c:227
No locals.
#8  0x00005555555603bd in destablish_ppp (ppp=0x7fffe80eb658) at /home/fabed/accel-ppp/accel-pppd/ppp/ppp.c:268
        uc = 0x0
#9  0x000055555556124e in ppp_layer_finished (ppp=0x7fffe80eb658, d=0x7fffe820fef0) at /home/fabed/accel-ppp/accel-pppd/ppp/ppp.c:577
        n = 0x7fffe80eb818
#10 0x0000555555563dde in lcp_layer_finished (fsm=0x7fffe8213f88) at /home/fabed/accel-ppp/accel-pppd/ppp/ppp_lcp.c:191
        lcp = 0x7fffe8213f38
#11 0x0000555555562ebd in ppp_fsm_recv_term_ack (layer=0x7fffe8213f88) at /home/fabed/accel-ppp/accel-pppd/ppp/ppp_fsm.c:434
No locals.
#12 0x0000555555565e40 in lcp_recv (h=0x7fffe8213f60) at /home/fabed/accel-ppp/accel-pppd/ppp/ppp_lcp.c:822
        hdr = 0x7fffbc491068
        lcp = 0x7fffe8213f38
        r = 32767
        term_msg = 0x5555555c6048 "\350`\\UUU"
#13 0x0000555555560a77 in ppp_chan_read (h=0x7fffe80eb790) at /home/fabed/accel-ppp/accel-pppd/ppp/ppp.c:424
        ppp = 0x7fffe80eb658
        ppp_h = 0x7fffe8213f60
        proto = 49185
#14 0x00007ffff7fc5bb6 in ctx_thread (ctx=0x7fffa4234988) at /home/fabed/accel-ppp/accel-pppd/triton/triton.c:252
        h = 0x7fffe807ab08
        t = 0x7fffe80eb658
        call = 0x7ffff798caf0 <l2tp_ctx_switch>
        tt = 140737086666200
        events = 1
#15 0x00007ffff7fc5957 in triton_thread (thread=0x55555566e628) at /home/fabed/accel-ppp/accel-pppd/triton/triton.c:192
        set = {__val = {516, 0 <repeats 15 times>}}
        sig = 10
        need_free = 0
        stack = 0x0
#16 0x00007ffff7f95fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
        ret = <optimized out>
        pd = <optimized out>
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140737255106304, -3129262188934321847, 140737488347486, 140737488347487, 140737255106304, 0, 3129232838126348617, 3129244645076248905}, 
              mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#17 0x00007ffff7ad04cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95