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Summary:ASTERISK-21157: Asterisk 1.8.20.0 Crash when unloading chan_dahdi
Reporter:Saleh Madi (saleh)Labels:
Date Opened:2013-02-25 02:10:24.000-0600Date Closed:2013-04-09 15:00:58
Priority:CriticalRegression?
Status:Closed/CompleteComponents:Channels/chan_dahdi
Versions:Frequency of
Occurrence
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Issues:
Environment:Attachments:
Description:Hello,

We're running Elastix 2.4.0, with Asterisk 1.8.20.0 on CentOS. We are running into frequent Segmentation faults, which usually crashes once or twice a day and automatically restart asterisk.

I have enable the backtrack and this is what i got from the bt and bt full log:

{noformat}
warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7fffedbfd000
Core was generated by `/usr/sbin/asterisk -f -U asterisk -G asterisk -vvvg -c'.
Program terminated with signal 11, Segmentation fault.
#0 0x00000036c9e7b5eb in memcpy () from /lib64/libc.so.6
(gdb) bt
#0 0x00000036c9e7b5eb in memcpy () from /lib64/libc.so.6
0000001 0x0000000000445e2c in callerid_feed ()
0000002 0x00002b8c410c71f3 in ast_unregister_file_version () from /usr/lib64/asterisk/modules/chan_dahdi.so
0000003 0x00002b8c410f07d3 in ast_unregister_file_version () from /usr/lib64/asterisk/modules/chan_dahdi.so
0000004 0x000000000051f3de in ?? ()
0000005 0x00000036caa0683d in start_thread () from /lib64/libpthread.so.0
0000006 0x00000036c9ed503d in clone () from /lib64/libc.so.6


(gdb) bt full
#0 0x00000036c9e7b5eb in memcpy () from /lib64/libc.so.6
No symbol table info available.
0000001 0x0000000000445e2c in callerid_feed ()
No symbol table info available.
0000002 0x00002ba10cc6a1f3 in ast_unregister_file_version () from /usr/lib64/asterisk/modules/chan_dahdi.so
No symbol table info available.
0000003 0x00002ba10cc937d3 in ast_unregister_file_version () from /usr/lib64/asterisk/modules/chan_dahdi.so
No symbol table info available.
0000004 0x000000000051f3de in ?? ()
No symbol table info available.
0000005 0x00000036caa0683d in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
0000006 0x00000036c9ed503d in clone () from /lib64/libc.so.6
{noformat}

Many thanks and Best Regards,
Saleh Madi
Comments:By: Matt Jordan (mjordan) 2013-02-25 06:53:23.927-0600

Thank you for your bug report. In order to move your issue forward, we require a backtrace[1] from the core file produced after the crash. Also, be sure you have DONT_OPTIMIZE enabled in menuselect within the Compiler Flags section, then:

make install

After enabling, reproduce the crash, and then execute the backtrace[1] instructions. When complete, attach that file to this issue report.

[1] https://wiki.asterisk.org/wiki/display/AST/Getting+a+Backtrace

Please read the instructions on the wiki on producing crashes with useful information. Attach the backtrace as a separate text file to this issue.
By: Saleh Madi (saleh) 2013-02-27 00:37:16.790-0600

After I install asterisk-debuginfo and I have enable the backtrack and this is what i got from the bt and bt full log:

warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7fff64ffd000
Core was generated by `/usr/sbin/asterisk -f -U asterisk -G asterisk -vvvg -c'.
Program terminated with signal 11, Segmentation fault.
#0 0x0000000000471db0 in category_get (config=0x4aa893, category_name=0x2b37980f6400 "", ignored=0) at config.c:664
664 for (cat = config->root; cat; cat = cat->next) {
(gdb) bt
#0 0x0000000000471db0 in category_get (config=0x4aa893, category_name=0x2b37980f6400 "", ignored=0) at config.c:664
0000001 0x00000000004ca5dd in handle_updates (s=0x1, m=0x32) at manager.c:2751
0000002 action_updateconfig (s=0x1, m=0x32) at manager.c:2823
0000003 0x0000000000000000 in ?? ()


(gdb) bt full
#0 0x0000000000471db0 in category_get (config=0x4aa893, category_name=0x2b37980f6400 "", ignored=0) at config.c:664
       cat = 0xf685c5894840738b
0000001 0x00000000004ca5dd in handle_updates (s=0x1, m=0x32) at manager.c:2751
       __PRETTY_FUNCTION__ = "handle_updates"
0000002 action_updateconfig (s=0x1, m=0x32) at manager.c:2823
       cfg = 0x4aa893
       sfn = 0x32 <Address 0x32 out of bounds>
       dfn = 0x2b37487cfe60 "\330\376|H7+"
       res = <value optimized out>
       rld = 0x2b37980f64f0 "`f\017\230\067+"
       config_flags = <value optimized out>
0000003 0x0000000000000000 in ?? ()
No symbol table info available.
By: Matt Jordan (mjordan) 2013-03-15 15:04:55.532-0500

{quote}
Attach the backtrace as a separate text file to this issue.
{quote}

Please provide the *full* backtraces. Attach as a text file to this issue.
By: Rusty Newton (rnewton) 2013-04-09 15:00:49.345-0500

Suspended due to lack of activity. Please request a bug marshal in #asterisk-bugs on the IRC network irc.freenode.net to reopen the issue should you have the additional information requested (full backtraces attached to the issue. See https://wiki.asterisk.org/wiki/display/AST/Getting+a+Backtrace).  Further information can be found at http://www.asterisk.org/developers/bug-guidelines