[asterisk-bugs] [JIRA] (ASTERISK-23755) SIGSEGV due to alignment bug on arm when destination callgroup/pickupgroud is set

[Rusty Newton (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-23755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=218364#comment-218364 ] 

Rusty Newton commented on ASTERISK-23755:
-----------------------------------------

Can you provide specific dialplan and configuration with test steps to reproduce the issue, just so we are all clear?  That is, relevant extensions.conf, sip.conf, etc with instructions on how to reproduce.

> SIGSEGV due to alignment bug on arm when destination callgroup/pickupgroud is set
> ---------------------------------------------------------------------------------
>
>                 Key: ASTERISK-23755
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-23755
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_sip/General, Core/Channels
>    Affects Versions: 11.9.0
>         Environment: buildroot 2014.02, Marvel Kirkwood, linux 3.10
>            Reporter: Peter Katzmann
>            Assignee: Matt Jordan
>            Severity: Critical
>         Attachments: backtrace.txt
>
>
> I encountered an SIGSEGV during testing of asterisk 11 on a Kirkwood arm platform. I tracked it down to the case that it will only occur if the user has pickupgroup/callgroup set,
> The problem does not exist with asterisk 1.8 .
> During deeper examination  i figured out the it seems a alignment probel, becuase when i set /proc/cpu/alignment to 2 i get plenty of misalignment message but no SIGSEGV
> The relevant exception part is:
> {noformat}
> Core was generated by `asterisk -g'.
> Program terminated with signal SIGSEGV, Segmentation fault.
> #0  0x00088d00 in ast_channel_inherit_variables (parent=0xb6514774, child=0xb61a74) at channel.c:6527
> 6527                                    AST_LIST_INSERT_TAIL(ast_channel_varshead(child), newvar, entries);
> #0  0x00088d00 in ast_channel_inherit_variables (parent=0xb6514774, child=0xb61a74) at channel.c:6527
>         vartype = 2
>         current = 0xaf3f20
>         newvar = 0xb76ad8
>         varname = <optimized out>
>         __PRETTY_FUNCTION__ = "ast_channel_inherit_variables"
> #1  0xb54938d8 in ?? ()
> No symbol table info available.
> #2  0xb54938d8 in ?? ()
> No symbol table info available.
> Backtrace stopped: previous frame identical to this frame (corrupt stack?)
> {noformat}



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