Crash with pidgin using SILC protocol

[Paul Aurich]

On 2010-09-04 11:31, Niez wrote:
> Hi,

> Backtrace :
> GNU gdb (GDB) 7.1-ubuntu
> Copyright (C) 2010 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later
> <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.  Type "show
> copying"
> and "show warranty" for details.
> This GDB was configured as "i486-linux-gnu".
> For bug reporting instructions, please see:
> <http://www.gnu.org/software/gdb/bugs/>...
> Reading symbols from /usr/bin/pidgin...(no debugging symbols
> found)...done.
> (gdb) runhandle SIGPIPE nostop noprint
> Signal        Stop	Print	Pass to program	Description
> SIGPIPE       No	No	Yes		Broken pipe
> (gdb) runh
> Starting program: /usr/bin/pidgin 
> [Thread debugging using libthread_db enabled]
> [New Thread 0xb7db6b70 (LWP 3032)]
> [New Thread 0xb66a0b70 (LWP 3077)]
> [Thread 0xb66a0b70 (LWP 3077) exited]
> [New Thread 0xb66a0b70 (LWP 3079)]
> [Thread 0xb66a0b70 (LWP 3079) exited]
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x00ab7894 in sigprocmask () from /lib/tls/i686/cmov/libc.so.6
> (gdb) bt full
> #0  0x00ab7894 in sigprocmask () from /lib/tls/i686/cmov/libc.so.6
> No symbol table info available.
> #1  0x01adc736 in silc_schedule_internal_signals_block
> (schedule=0x85ec2b0, 
>     context=0x47) at silcunixschedule.c:583
> No locals.
> #2  0x01adac20 in silc_schedule_task_del_by_context
> (schedule=0x85ec2b0, 
>     context=0x85ec2b8) at silcschedule.c:838
>         task = 0x50
>         htl = {ht = 0x85c37e8, entry = 0x8647068, index = 0, auto_rehash
> = 0}
>         list = {head = 0x1a66ee0, tail = 0x8427f30, current =
> 0x8620790, 
>           next_offset = 6784, prev_offset = 2140, prev_set = 0, end_set
> = 0, 
>           count = 34745040}
>         ret = 8 '\b'
> #3  0x01a95459 in silc_client_ftp_session_free (session=0x85ec2b8)
>     at client_ftp.c:383
> No locals.
> #4  0x01a7b6ea in silc_client_connection_st_close (fsm=0x8620738, 
>     fsm_context=0x86d5fa0, state_context=0x0) at client.c:428
> No locals.
> #5  0x01ad41ac in silc_fsm_run (schedule=0x85c1a80,
> app_context=0x8427f30, 
>     type=SILC_TASK_EXPIRE, fd=0, context=0x8620738) at silcfsm.c:429
> No locals.
> #6  0x01adb822 in silc_schedule_dispatch_timeout (schedule=0x85c1a80, 
>     dispatch_all=<value optimized out>) at silcschedule.c:114
>         task = 0xe3
>         curtime = {tv_sec = 1283622877, tv_usec = 32464}
>         count = 1
> #7  0x01adc107 in silc_schedule_select_timeout (schedule=0x85c1a80, 
>     timeout_usecs=<value optimized out>) at silcschedule.c:159
>         task = <value optimized out>
>         curtime = {tv_sec = 1283622877, tv_usec = 32463}
>         dispatch = 1 '\001'
> #8  silc_schedule_iterate (schedule=0x85c1a80, 
>     timeout_usecs=<value optimized out>) at silcschedule.c:424
>         ret = <value optimized out>
> #9  0x01adc394 in silc_schedule_one (schedule=0x85c1a80,
> timeout_usecs=0)
>     at silcschedule.c:484
>         ret = 99 'c'
> #10 0x01a7a66c in silc_client_run_one (client=0x8427f30) at
> client.c:1095
> No locals.
> #11 0x01a66d83 in ?? () from /usr/lib/purple-2/libsilcpurple.so
> No symbol table info available.
> #12 0x008fdd5c in ?? () from /lib/libglib-2.0.so.0
> No symbol table info available.
> #13 0x008fd5e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
> No symbol table info available.
> #14 0x009012d8 in ?? () from /lib/libglib-2.0.so.0
> No symbol table info available.
> #15 0x00901817 in g_main_loop_run () from /lib/libglib-2.0.so.0
> No symbol table info available.
> #16 0x004d03c9 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
> No symbol table info available.
> #17 0x080cb2e1 in main ()
> No symbol table info available.
> (gdb) quit
> A debugging session is active.

I've never looked at our SILC code, but this looks like a crash in the
external libsilc, right?  (We should respond to this either way...)

~Paul

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