Hi team
see this gdb report
Service is pppoe
Thread 7 "accel-ppp" received signal SIGSEGV, Segmentation fault. [Switching to LWP 458195] allocate_channel (ppp_max_payload=0, cookie=<optimized out>, tr101=0x0, service_name=<optimized out>, relay_sid=0x0, host_uniq=0x7fffd0002030, addr=0x7fffd0002022 "\374\354\332f\365\272\210c\021\031", serv=0x467ee0) at /build/accel-ppp-master/accel-pppd/ctrl/pppoe/pppoe.c:348 348 /build/accel-ppp-master/accel-pppd/ctrl/pppoe/pppoe.c: No such file or directory. (gdb) (gdb) bt full #0 allocate_channel (ppp_max_payload=0, cookie=<optimized out>, tr101=0x0, service_name=<optimized out>, relay_sid=0x0, host_uniq=0x7fffd0002030, addr=0x7fffd0002022 "\374\354\332f\365\272\210c\021\031", serv=0x467ee0) at /build/accel-ppp-master/accel-pppd/ctrl/pppoe/pppoe.c:348 conn = 0x7fffc00561b8 old_sid_ptr = <optimized out> subscriber_tags = <optimized out> conn = <optimized out> old_sid_ptr = <optimized out> subscriber_tags = <optimized out> bit = <optimized out> #1 pppoe_recv_PADR (size=<optimized out>, pack=0x7fffd000201c "\254\037k\365{\322\374\354\332f\365\272\210c\021\031", serv=0x467ee0) at /build/accel-ppp-master/accel-pppd/ctrl/pppoe/pppoe.c:1299 service_name_tag = <optimized out> service_match = <optimized out> conn = <optimized out> vendor_id = <optimized out> ethhdr = 0x7fffd000201c hdr = 0x7fffd000202a tag = <optimized out> host_uniq_tag = 0x7fffd0002030 ac_cookie_tag = <optimized out> tr101_tag = 0x0 n = <optimized out> ppp_max_payload = 0 relay_sid_tag = 0x0 ethhdr = <optimized out> hdr = <optimized out> tag = <optimized out> host_uniq_tag = <optimized out> relay_sid_tag = <optimized out> ac_cookie_tag = <optimized out> service_name_tag = <optimized out> tr101_tag = <optimized out> n = <optimized out> service_match = <optimized out> conn = <optimized out> vendor_id = <optimized out> ppp_max_payload = <optimized out> svc_index = <optimized out> #2 pppoe_serv_read (data=0x7fffd0002018 "V") at /build/accel-ppp-master/accel-pppd/ctrl/pppoe/pppoe.c:1348 serv = 0x467ee0 pack = 0x7fffd000201c "\254\037k\365{\322\374\354\332f\365\272\210c\021\031" hdr = 0x7fffd000202a n = <optimized out> #3 0x00007ffff7880d23 in ctx_thread (ctx=<optimized out>) at /build/accel-ppp-master/accel-pppd/triton/triton.c:280 call = 0x7fffc8007358 tt = 1 h = <optimized out> t = <optimized out> events = <optimized out> h = <optimized out> t = <optimized out> call = <optimized out> tt = <optimized out> --Type <RET> for more, q to quit, c to continue without paging-- events = <optimized out> #4 triton_thread (thread=0x6310a0) at /build/accel-ppp-master/accel-pppd/triton/triton.c:195 set = {__val = {516, 0 <repeats 15 times>}} sig = 10 need_free = <optimized out> stack = 0x0 #5 0x00007ffff76f383f in ?? () from /lib64/libc.so.6 No symbol table info available. #6 0x00007ffff777f48c in ?? () from /lib64/libc.so.6 No symbol table info available.