[asterisk-bugs] [JIRA] (ASTERISK-29846) channels: bad ao2 ref causes crash

[Kevin Harwell (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-29846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=258413#comment-258413 ] 

Kevin Harwell commented on ASTERISK-29846:
------------------------------------------

[~InterLinked]

Double check the output of the following:
{noformat}
$ cat /proc/sys/kernel/core_pattern
{noformat}
That specifies where/how core files are written out. I have had it get overwritten on me before by something else (never figured out what).

Are there any files in {{/var/crash/}}? Depending you might need to use something like {{apport-unpack}} to extract the actual core from the file.

> channels: bad ao2 ref causes crash
> ----------------------------------
>
>                 Key: ASTERISK-29846
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-29846
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: General
>    Affects Versions: 18.9.0
>         Environment: Debian 10
>            Reporter: N A
>            Assignee: Unassigned
>         Attachments: core-asterisk-2022-02-01T17-04-52Z-brief.txt, core-asterisk-2022-02-01T17-04-52Z-full.txt, core-asterisk-2022-02-01T17-04-52Z-info.txt, core-asterisk-2022-02-01T17-04-52Z-locks.txt, core-asterisk-2022-02-01T17-04-52Z-thread1.txt, core-asterisk-2022-02-10T00-46-55Z-full.txt
>
>
> Currently, Asterisk crashes randomly every few days, not seemingly linked to anything going on at the moment. In fact, prior to this crash, the system was completely idle (no calls) for the previous 34 minutes.
> Here is a backtrace from right before the last crash, useful as it has line numbers:
> 01:35:03 ERROR[13076] : Got 10 backtrace records
> # 0: [0x55ca492928cc] asterisk utils.c:2727 __ast_assert_failed()
> # 1: [0x55ca49109db3] asterisk astobj2.c:212 log_bad_ao2()
> # 2: [0x55ca4910a73a] asterisk astobj2.c:501 __ao2_ref()
> # 3: [0x55ca4917269a] asterisk cli.c:1218 handle_chanlist()
> # 4: [0x55ca4917859f] asterisk cli.c:3020 ast_cli_command_full()
> # 5: [0x55ca49178734] asterisk cli.c:3048 ast_cli_command_multiple_full()
> # 6: [0x55ca49101e0c] asterisk asterisk.c:1424 netconsole()
> # 7: [0x55ca4928fb57] asterisk utils.c:1572 dummy_start()
> # 8: [0x7f257c305fa3] libpthread.so.0 pthread_create.c:487 start_thread()
> # 9: [0x7f257bd994cf] libc.so.6 clone.S:97 clone()



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