[SR-Users] CRASH on qm_free for simultaneous calls (V3.1.0)
Daniel-Constantin Mierla
miconda at gmail.com
Thu Dec 16 07:27:19 CET 2010
Hello,
look into syslog file (/var/log/syslog or /var/log/messages if you
didn't set a custom one) and search for a message like "BUG: qm_free:
freeing already freed pointer ...".. Send it here, seems to be a double
free of same pointer.
Thanks,
Daniel
On 12/16/10 12:34 AM, Jijo wrote:
> I'm observing a crash on qm_free, when we made two outgoing calls to
> the same number. One SIP phone receives ring back tone and the other
> busy tone. The back trace is shown below which shows that it is
> crashed in abort(). How can the condition if (f->u.is_free){ could
> be true?
> Please let me know if anybody observed this issue and let me know how
> to debug this isssue.
>
> f=(struct qm_frag*) ((char*)p-sizeof(struct qm_frag));
> #ifdef DBG_QM_MALLOC
> qm_debug_frag(qm, f);
> if (f->u.is_free){
> LOG(L_CRIT, "BUG: qm_free: freeing already freed pointer,"
> " first free: %s: %s(%ld) - aborting\n",
> f->file, f->func, f->line);*
> abort();*
> }
> MDBG("qm_free: freeing frag. %p alloc'ed from %s: %s(%ld)\n",
> f, f->file, f->func, f->line);
> #endif
>
>
> BACKTRACE
> -------------------
>
>
> Program received signal SIGABRT, Aborted.
> 0xb76fd7a5 in raise () from /lib/libc.so.6
> (gdb) bt full
> #0 0xb76fd7a5 in raise () from /lib/libc.so.6
> No symbol table info available.
> #1 0xb76ff070 in abort () from /lib/libc.so.6
> No symbol table info available.
> #2 0x081824d5 in qm_free (qm=0xaf7ee000, p=0xaf9ed758,
> file=0xb7659aed "tm: h_table.c", func=0xb7659c9c "free_cell",
> line=141) at mem/q_malloc.c:447
> f = <value optimized out>
> prev = <value optimized out>
> next = <value optimized out>
> size = <value optimized out>
> #3 0xb75ff6b9 in free_cell (dead_cell=0xaf9e7054) at h_table.c:141
> b = <value optimized out>
> i = <value optimized out>
> rpl = <value optimized out>
> tt = <value optimized out>
> foo = <value optimized out>
> cbs = <value optimized out>
> cbs_tmp = <value optimized out>
> __FUNCTION__ = "free_cell"
> #4 0xb7625eb0 in t_unref (p_msg=0x847bb10) at t_lookup.c:1553
> kr = <value optimized out>
> #5 0xb764b3ad in w_t_unref (foo=0x847bb10, flags=2147483649, bar=0x0)
> at tm.c:707
> No locals.
> #6 0x0811543a in exec_post_script_cb (msg=0x847bb10,
> type=REQUEST_CB_TYPE) at script_cb.c:195
> cb = 0x8867874
> flags = 2147483649
> #7 0x080e5a4e in receive_msg (
> buf=0x82a89e0 "ACK sip:0845 at 10.80.13.54:5060;transport=udp
> SIP/2.0\r\nVia: SIP/2.0/UDP
> 10.200.3.39:5060;branch=z9hG4bK0a992e8d3052e85e5\r\nRoute:
> <sip:0845 at 10.200.0.31:5060;lr;transport=udp>\r\nMax-Forwards:
> 69\r\nFrom: 554"..., len=<value optimized out>, rcv_info=0xbf95b7fc)
> at receive.c:221
> msg = 0x847bb10
> ctx = {rec_lev = 137434160, run_flags = 0, last_retcode =
> -1080707352, jmp_env = {{__jmpbuf = {-1224488143, 137089696,
> 137434092, 0, -1080707248,
> -1080707304}, __mask_was_saved = 0, __saved_mask =
> {__val = {3079133424, 134556827, 3079002384, 0, 3214260024,
> 3070479287, 137089696,
> 137434160, 3070572886, 3070573396, 228, 137347864,
> 3214260056, 3077419768, 3079002384, 137089664, 4294967295, 3079131124,
> 134556827,
> 134535424, 1, 3079058382, 3079133864, 3079003192, 1,
> 1, 0, 134555968, 0, 136548964, 3077419768, 142823652}}}}}
> ret = <value optimized out>
> inb = {
> s = 0x82a89e0 "ACK sip:0845 at 10.80.13.54:5060;transport=udp
> SIP/2.0\r\nVia: SIP/2.0/UDP
> 10.200.3.39:5060;branch=z9hG4bK0a992e8d3052e85e5\r\nRoute:
> <sip:0845 at 10.200.0.31:5060;lr;transport=udp>\r\nMax-Forwards:
> 69\r\nFrom: 554"..., len = 457}
> __FUNCTION__ = "receive_msg"
> #8 0x08175cb6 in udp_rcv_loop () at udp_server.c:532
> len = <value optimized out>
> buf = "ACK sip:0845 at 10.80.13.54:5060;transport=udp
> SIP/2.0\r\nVia: SIP/2.0/UDP
> 10.200.3.39:5060;branch=z9hG4bK0a992e8d3052e85e5\r\nRoute:
> <sip:0845 at 10.200.0.31:5060;lr;transport=udp>\r\nMax-Forwards:
> 69\r\nFrom: 554"...
> from = 0x88350e4
> fromlen = 16
> ri = {src_ip = {af = 2, len = 4, u = {addrl = {654559242, 0,
> 3214260312, 3079002384}, addr32 = {654559242, 0, 3214260312,
> 3079002384}, addr16 = {
> 51210, 9987, 0, 0, 47192, 49045, 55568, 46981}, addr =
> "\n\310\003'\000\000\000\000X\270\225\277\020Ù
> \267"}}, dst_ip = {af = 2, len = 4,
> u = {addrl = {520144906, 0, 0, 0}, addr32 = {520144906, 0,
> 0, 0}, addr16 = {51210, 7936, 0, 0, 0, 0, 0, 0},
> addr = "\n\310\000\037", '\000' <repeats 11 times>}},
> src_port = 5060, dst_port = 5060, proto_reserved1 = 0, proto_reserved2
> = 0, src_su = {
> s = {sa_family = 2, sa_data =
> "\023\304\n\310\003'\000\000\000\000\000\000\000"}, sin = {sin_family
> = 2, sin_port = 50195, sin_addr = {
> s_addr = 654559242}, sin_zero =
> "\000\000\000\000\000\000\000"}, sin6 = {sin6_family = 2, sin6_port =
> 50195, sin6_flowinfo = 654559242,
> sin6_addr = {__in6_u = {__u6_addr8 = '\000' <repeats 15
> times>, __u6_addr16 = {0, 0, 0, 0, 0, 0, 0, 0}, __u6_addr32 = {0, 0,
> 0, 0}}},
> sin6_scope_id = 0}}, bind_address = 0x82f4140, proto = 1
> '\001'}
> __FUNCTION__ = "udp_rcv_loop"
> #9 0x080ac1d4 in main_loop () at main.c:1554
> i = <value optimized out>
> ---Type <return> to continue, or q <return> to quit---
> pid = <value optimized out>
> si = <value optimized out>
> si_desc = "udp receiver child=0 sock=10.200.0.31:5060
> <http://10.200.0.31:5060>\000\b
> A\206\b\002\000\000\000\004\000\000\000\n\310\000\037L
> \225\257H\271\225\277@\030\207\267\020i\203\b\006\000\000\000\000\340~\257\001\000\000\000\001\000\000\000\000\000\000\000\000\340~\257\004\000\000\000?)\037\b\001\000\000\000\a\000\000\000\000\000\000\000H\271\225\277\350\353\017\b"
> #10 0x080af2ec in main (argc=9, argv=0xbf95ba84) at main.c:2398
> cfg_stream = 0x8cbe008
> c = <value optimized out>
> r = <value optimized out>
> tmp = 0xbf95cdc0 ""
> tmp_len = -1217394389
> port = <value optimized out>
> proto = <value optimized out>
> options = 0x81ef340
> ":f:cm:dVhEb:l:L:n:vrRDTN:W:w:t:u:g:P:G:SQ:O:a:A:"
> ret = -1
> seed = 3337198521
> rfd = <value optimized out>
> debug_save = <value optimized out>
> debug_flag = <value optimized out>
> dont_fork_cnt = 0
> p = <value optimized out>
>
> Thanks
> Jijo
>
>
> _______________________________________________
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> sr-users at lists.sip-router.org
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--
Daniel-Constantin Mierla
Kamailio (OpenSER) Advanced Training
Jan 24-26, 2011, Irvine, CA, USA
http://www.asipto.com
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