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@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@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@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@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@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@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\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