[SR-Users] Crash in usrloc, get_all_db_ucontacts
Kristian F. Høgh
kfh at uni-tel.dk
Wed Jan 14 10:50:37 CET 2015
Hi Daniel,
(gdb) p *row
$1 = {values = 0x9bd2b8, n = 13}
Regards,
Kristian.
On Wednesday 14 January 2015 10:01:41 Daniel-Constantin Mierla wrote:
> Hello,
>
> the operation done by that code is practically a sql query, fetching the
> result and packing it for nathelper usage. It is no race between it and
> handling any sip packet, no shared memory accessed.
>
> Do you get only one corefile?
>
> From the backtrace it looks like row pointer is not ok, can you get the
> output for:
>
> p *row
>
> Cheers,
> Daniel
>
> On 13/01/15 15:08, Kristian F. Høgh wrote:
> > Hi,
> >
> > On an ancient kamailio 3.1, we occasionally experience crash in the function get_all_db_ucontacts in usrloc.
> >
> > A backtrace reveals the following:
> > #0 0x00002b505f2fb4ff in get_all_db_ucontacts (buf=0xadd270, len=<value optimized out>, flags=64, part_idx=1, part_max=30) at dlist.c:176
> > 176 if (VAL_NULL(ROW_VALUES(row)+4) || p1==0 || p1[0]==0){
> >
> >
> > The lines around line 176 (which look similar to trunk, except p and p1 are str today)
> > 159 for(i = 0; i < RES_ROW_N(res); i++) {
> > 160 row = RES_ROWS(res) + i;
> > 161
> > 162 /* received */
> > 163 p = (char*)VAL_STRING(ROW_VALUES(row));
> > 164 if ( VAL_NULL(ROW_VALUES(row)) || p==0 || p[0]==0 ) {
> > 165 /* contact */
> > 166 p = (char*)VAL_STRING(ROW_VALUES(row)+1);
> > 167 if (VAL_NULL(ROW_VALUES(row)+1) || p==0 || p[0]==0) {
> > 168 LM_ERR("empty contact -> skipping\n");
> > 169 continue;
> > 170 }
> > 171 }
> > 172 p_len = strlen(p);
> > 173
> > 174 /* path */
> > 175 p1 = (char*)VAL_STRING(ROW_VALUES(row)+4);
> > 176 if (VAL_NULL(ROW_VALUES(row)+4) || p1==0 || p1[0]==0){
> > 177 p1 = NULL;
> > 178 p1_len = 0;
> > 179 } else {
> > 180 p1_len = strlen(p1);
> > 181 }
> >
> > The client from frame #2 (bt full below), send a REGISTER, which was replied "200 OK" at the same second as the crash.
> > Is it a timing issue between REGISTER and nathelper ping?
> >
> > I have a trace and the core.
> >
> > Regards,
> > Kristian Høgh
> > Uni-tel
> >
> >
> >
> > bt full
> > #0 0x00002b505f2fb4ff in get_all_db_ucontacts (buf=0xadd270, len=<value optimized out>, flags=64, part_idx=1, part_max=30) at dlist.c:176
> > sock = 0x0
> > dbflags = 11088
> > host = {s = 0x375ef8e "PROXY_IP:5060", len = 13}
> > i = <value optimized out>
> > row = 0xa13488
> > dom = 0x2b5062723278
> > p1 = 0x2 <Address 0x2 out of bounds>
> > now_s = "'2015-01-13 12:58:51'\177\000\000)"
> > port = 11088
> > p_len = 73
> > cp = <value optimized out>
> > needed = 16
> > res = 0xa2ed38
> > p = 0xcfcdffaf <Address 0xcfcdffaf out of bounds>
> > now_len = 21
> > proto = 1642847400
> > p1_len = 0
> > shortage = 0
> > query_buf = "select received, contact, socket, cflags, path from location where expires > '2015-01-13 12:58:51' and cflags & 64 = 64 and id % 30 = 1", '\000' <repeats 376 times>
> > query_str = {s = 0x2b505f515520 "select received, contact, socket, cflags, path from location where expires > '2015-01-13 12:58:51' and cflags & 64 = 64 and id % 30 = 1", len = 135}
> > #1 get_all_ucontacts (buf=0xadd270, len=<value optimized out>, flags=64, part_idx=1, part_max=30) at dlist.c:398
> > No locals.
> > #2 0x00002b5061eb6b1a in nh_timer (ticks=<value optimized out>, timer_idx=<value optimized out>) at nathelper.c:1623
> > rval = <value optimized out>
> > buf = 0xadd270
> > cp = <value optimized out>
> > c = {s = 0x0, len = 0}
> > opt = {s = 0x0, len = 0}
> > path = {s = 0x0, len = 0}
> > curi = {user = {s = 0x0, len = 0}, passwd = {s = 0x0, len = 0}, host = {s = 0xadd836 "CLIENT_IP:62252\250u\220", len = 14}, port = {s = 0xadd845 "62252\250u\220", len = 5}, params = {s = 0x0, len = 0}, sip_params = {s = 0x0, len = 0}, headers = {
> > s = 0x7fff110134b0 "", len = 566862356}, port_no = 50336, proto = 70, type = ERROR_URI_T, flags = 65536, transport = {s = 0x8cbfa0 "", len = 5441948}, ttl = {s = 0x7fff1101352f "", len = 4448297}, user_param = {s = 0x375ef8e "PROXY_IP:5060", len = 13},
> > maddr = {s = 0x9204b0 "sip3", len = 10677560}, method = {s = 0x0, len = 0}, lr = {s = 0xadd84a "\250u\220", len = 0}, r2 = {s = 0xa2ebc0 "\250\272\252", len = 285291296}, transport_val = {s = 0x40 <Address 0x40 out of bounds>, len = 335544320}, ttl_val = {
> > s = 0x3221c302d0 "H\307\300\017", len = 0}, user_param_val = {s = 0x0, len = 0}, maddr_val = {s = 0x0, len = 0}, method_val = {s = 0x0, len = 0}, lr_val = {s = 0x0, len = 0}, r2_val = {s = 0x0, len = 0}}
> > he = <value optimized out>
> > send_sock = <value optimized out>
> > flags = <value optimized out>
> > proto = <value 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 = 0 '\000', send_flags = {f = 0 '\000', blst_imask = 0 '\000'}}
> > iteration = 1
> > __FUNCTION__ = "nh_timer"
> > #3 0x0000000000521c54 in fork_dummy_timer (child_id=<value optimized out>, desc=<value optimized out>, make_sock=<value optimized out>, f=0x2b5061eb6a70 <nh_timer>, param=0x0, interval=1) at timer_proc.c:71
> > pid = <value optimized out>
> > #4 0x00002b5061eb42ee in child_init (rank=<value optimized out>) at nathelper.c:673
> > i = 58055190
> > #5 0x00000000004db1d0 in init_mod_child (m=0x917dc0, rank=0) at sr_module.c:829
> > No locals.
> > #6 0x00000000004db1a9 in init_mod_child (m=0x918420, rank=0) at sr_module.c:826
> > No locals.
> > #7 0x00000000004db1a9 in init_mod_child (m=0x918aa0, rank=0) at sr_module.c:826
> > No locals.
> >
> >
> >
> > _______________________________________________
> > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> > sr-users at lists.sip-router.org
> > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>
>
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