following is backtrace:
#0 qm_detach_free (frag=0x7f91a4656170, qm=<optimized
out>) at mem/q_malloc.c:269
prev = 0x7f91a4656170
next = 0x0
#1 qm_malloc (qm=0x7f91a429b000, size=3840) at
mem/q_malloc.c:386
f = 0x7f91a4656170
hash = -1536859792
#2 0x000000000050977f in shm_malloc (size=3832) at
parser/../mem/shm_mem.h:262
p = <optimized out>
#3 sip_msg_shm_clone (org_msg=0x7f91ae9d7630,
sip_msg_len=0x7fff56a2dde0, clone_lumps=0) at
sip_msg_clone.c:502
len = 3832
hdr = <optimized out>
new_hdr = <optimized out>
last_hdr = <optimized out>
via = <optimized out>
prm = <optimized out>
to_prm = <optimized out>
new_to_prm = <optimized out>
new_msg = <optimized out>
p = <optimized out>
__FUNCTION__ = "sip_msg_shm_clone"
#4 0x00007f91ac989062 in build_cell
(p_msg=0x7f91ae9d7630) at h_table.c:372
new_cell = 0x7f91a4656180
sip_msg_len = <optimized out>
old = <optimized out>
cbs = <optimized out>
cbs_tmp = <optimized out>
xold = <optimized out>
#5 0x00007f91ac9b5fc6 in new_t (p_msg=0x7f91ae9d7630) at
t_lookup.c:1357
new_cell = <optimized out>
#6 t_newtran (p_msg=0x7f91ae9d7630) at t_lookup.c:1497
lret = <optimized out>
my_err = <optimized out>
canceled = <optimized out>
__FUNCTION__ = "t_newtran"
#7 0x00007f91ac9a99e0 in t_forward_cancel
(p_msg=0x7f91ae9d7630, proxy=0x0, proto=0,
tran=0x7fff56a2e2c0) at t_fwd.c:1607
t_invite = <optimized out>
t = 0x0
ret = <optimized out>
new_tran = <optimized out>
dst = {send_sock = 0x63371f, to = {s = {sa_family
= 54224, sa_data =
"\003\255\221\177\000\000\020\300\220\256\221\177\000"}, sin
= {sin_family = 54224,
sin_port = 44291, sin_addr = {s_addr =
32657}, sin_zero = "\020\300\220\256\221\177\000"}, sin6 =
{sin6_family = 54224, sin6_port = 44291,
sin6_flowinfo = 32657, sin6_addr = {__in6_u
= {__u6_addr8 =
"\020\300\220\256\221\177\000\000\070\261W\000\000\000\000",
__u6_addr16 = {49168, 44688,
32657, 0, 45368, 87, 0, 0},
__u6_addr32 = {2928721936, 32657, 5747000, 0}}},
sin6_scope_id = 0}}, id = 0, proto = 96 '`', send_flags = {
f = 225 '\341', blst_imask = 162 '\242'}}
host = {s = 0x0, len = 0}
port = <optimized out>
__FUNCTION__ = "t_forward_cancel"
#8 0x00007f91ac99ae15 in t_relay_to
(p_msg=0x7f91ae9d7630, proxy=0x0, proto=0, replicate=0) at
t_funcs.c:264
ret = 0
new_tran = <optimized out>
t = <optimized out>
dst = {send_sock = 0x0, to = {s = {sa_family = 0,
sa_data = '\000' <repeats 13 times>}, sin =
{sin_family = 0, sin_port = 0, sin_addr = {s_addr = 0},
sin_zero = "\000\000\000\000\000\000\000"},
sin6 = {sin6_family = 0, sin6_port = 0, sin6_flowinfo = 0,
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}}, id = 0,
proto = 64 '@', send_flags = {f = 243 '\363',
blst_imask = 162 '\242'}}
port = <optimized out>
host = {s = 0x7fff56a2eab8 "0[*\244\221\177", len
= -1398876638}
__FUNCTION__ = "t_relay_to"