16 Oct
2008
16 Oct
'08
8:29 p.m.
I feel retarded asking this as I'm sure it's abundantly made clear on
the web site / dokuwiki, but what's the SVN URI to check out trunk?
Daniel-Constantin Mierla wrote:
Hello Alex,
I found a bug in the dialog module, the profile size is integer and the
variable was set as string value. Can you get the trunk and test? I will
backport afterwards, thanks,
Daniel
On 10/16/08 08:04, Alex Balashov wrote:
--
Alex Balashov
Evariste Systems
Web : http://www.evaristesys.com/
Tel : (+1) (678) 954-0670
Direct : (+1) (678) 954-0671
Mobile : (+1) (706) 338-8599
It would seem that the malloc for the script var
occasionally fails,
which may or may not be central to the issue:
[SWITCH] Relaying BYE from 210.23.22.23 to sip:2122222322@210.23.22.23
(DTAG=706
[SWITCH] [D] No dialog affinity for this BYE
Oct 16 05:03:32 [8710] ERROR:core:set_var_value: out of pkg mem!
Oct 16 05:03:32 [8710] ERROR:dialog:w_get_profile_size: cannot set svar
[SWITCH] [D] Profile size for 7709600101 now: 0
[ONREPLY-ROUTE 2] Received 200 for BYE
Relaying INVITE from 210.23.22.23 to sip:2122222322@210.23.22.23:5060
[D] Added new dialog for 7709600101
[ONREPLY-ROUTE 1] Provisional reply 100 received.
[ONREPLY-ROUTE 1] 200 OK received for 7709600101
[ONREPLY-ROUTE 1] INVITE/200 is part of dialog for 7709600101
[ONREPLY-ROUTE 1] Dialog profile size is: >
[SWITCH] Relaying ACK from 210.23.22.23 to sip:2122222322@210.23.22.23
(DTAG=706
[SWITCH] [D] No dialog affinity for this ACK
Segmentation fault (core dumped)
Alex Balashov wrote:
I also have another interesting problem with the
aforementioned
configuration (http://pastebin.com/f28051a5).
When I write the dialog profile size into an AVP, it works fine.
When I write it into a script var, i.e. replace $avp(S:dlg_sz) with
$var(dlg_sz), it crashes:
Relaying INVITE from 210.23.22.23 to sip:2122222322@210.23.22.23:5060
[D] Added new dialog for 7709600101
[ONREPLY-ROUTE 1] Provisional reply 100 received.
[ONREPLY-ROUTE 1] 200 OK received for 7709600101
[ONREPLY-ROUTE 1] INVITE/200 is part of dialog for 7709600101
Segmentation fault (core dumped)
GDB reveals:
Program received signal SIGSEGV, Segmentation fault.
0xb7e7f2f8 in strncpy () from /lib/i686/nosegneg/libc.so.6
(gdb) where
#0 0xb7e7f2f8 in strncpy () from /lib/i686/nosegneg/libc.so.6
#1 0x080a4a07 in set_var_value (var=0x8188d98, value=0xbfae5f28,
flags=<value o
at script_var.c:122
#2 0xb7d6c4fe in w_get_profile_size (msg=0x81902b8,
profile=0xb5ede180 "\034??\
value=0x818b6b8 "@?\030\b", result=0x818b6f8 "N") at
dialog.c:668
#3 0x08054f15 in do_action (a=0x818b850, msg=0x81902b8) at action.c:850
#4 0x08053ed2 in run_action_list (a=0x818b5c8, msg=0x81902b8) at
action.c:138
#5 0x08056365 in do_action (a=0x818bab8, msg=0x81902b8) at action.c:722
#6 0x08053ed2 in run_action_list (a=0x818b178, msg=0x81902b8) at
action.c:138
#7 0x080572c2 in run_top_route (a=0x818b178, msg=0x81902b8) at
action.c:118
#8 0xb7de3a64 in reply_received (p_msg=0x81902b8) at t_reply.c:1361
#9 0x08064793 in forward_reply (msg=0x81902b8) at forward.c:507
#10 0x08090d5b in receive_msg (
buf=0x81600e0 "SIP/2.0 200 OK\r\nVia: SIP/2.0/UDP
215.22.22.22;branch=z9hG4
08.52.173.18\r\nVia: SIP/2.0/UDP
198.225.86.10:5060;branch=z9hG4bKragjo0207gm0dc
p:208.52."..., len=814, rcv_info=0xbfae65d4) at receive.c:203
#11 0x080cccfb in udp_rcv_loop () at udp_server.c:449
#12 0x0806b78d in main (argc=1, argv=0xbfae6764) at main.c:693
It would seem to me that there is some sort of buffer overflow issue
that results in the garbage seen above.
Not sure that it makes a difference, but the glibc being linked
against is a Xen-safe one that disables TLS functionality. This is
all running inside a Xen DomU.