[asterisk-bugs] [JIRA] (ASTERISK-27170) segfault in pj_sockaddr_in_set_str_addr

[nappsoft (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-27170?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=238035#comment-238035 ] 

nappsoft commented on ASTERISK-27170:
-------------------------------------

Well I still try to get more information. I had now to wait for 8 days to observe new crashes (there weren't any crashes in the meantime). It crashed two times today, both times at the same libc.so address as always (it was always either libc.so or libpjsip.so).

The interesting thing: there were exactly 3 calls which involved PickupChan, two of them crashed. So I really seem to be on the right track as I have 4 samples of crashes now and in each one a PickupChan was involved (something that isn't done all to often...) and each time asterisk crashed on hangup!

I'll continue to try to reproduce the issue myself in a gdb session.

> segfault in pj_sockaddr_in_set_str_addr
> ---------------------------------------
>
>                 Key: ASTERISK-27170
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-27170
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: PBX/General
>    Affects Versions: 13.16.0
>         Environment: 64bit linux musl 1.1.15
>            Reporter: nappsoft
>            Assignee: nappsoft
>
> From time to time asterisk crashes in pj_sockaddr_i_set_str_add. The asterisk version we use is 13.16.0 with some stability patches that flew into 13.17.0 (we will update to 13.17.0 soon). But we already had the same crashes with unpatched 13.16.0 versions and with older versions as well.
> According to the sip traces the last thing that happened was a sip transfer. The messageflow was:
> REFER (Phone) -> 202 Accepted (PBX) -> NOTIFY Trying (PBX) -> NOTIFY OK (PBX) -> BYE (Phone) - > OK (PBX for the BYE message) -> OK (Phone for the NOTIFY Trying) -> OK (Phone for the NOTIFY OK)
> As these are embedded systems with limited resources it's always difficult to make crash dumps there or to run asterisk in gdb... I'll try to get some complete backtraces in the future, but maybe somebody has an idea based on the described scenario. => maybe there is a race condition when the Phone sends OK messages for the NOTIFY messages after that the phone has already sent a BYE for the same call?



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