[asterisk-bugs] [JIRA] (ASTERISK-21665) 11.X Crash on debian/sparc with SIGBUS, Bus Error

[Walter Doekes (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-21665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=209816#comment-209816 ] 

Walter Doekes commented on ASTERISK-21665:
------------------------------------------

I did some poking last friday. And the cause of the 'core stop now' crash was a problem with allocation at the start. First when freeing that memory it crashes.

The problem -- which I cannot explain at all -- is that malloc(3) starts returning 4-byte aligned addresses after a while. And that obviously causes trouble.

I added a couple of assertions (*) that alloc'ed memory should be 8-byte aligned, and it always trips on the same allocation during initialization. Changing size of the allocation didn't help.

(*) With abort() so you can debug the surroundings with gdb. For some reason running asterisk under GDB refuses to work (something with libthread-debug stuff).
                
> 11.X Crash on debian/sparc with SIGBUS, Bus Error
> -------------------------------------------------
>
>                 Key: ASTERISK-21665
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21665
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Core/General
>    Affects Versions: 11.3.0, 11.4.0, 11.5.0
>         Environment: Debian 6 & 7, sparc64
>            Reporter: Jeremy Kister
>            Assignee: Walter Doekes
>            Severity: Critical
>         Attachments: core_stop_now_backtrace.txt, modules.conf, sparc_alignment_issues_2.diff, sparc_alignment_issues_3.diff, sparc_alignment_issues.diff
>
>
> Asterisk 11.4.0-rc1 immediately dumps core with error "Bus Error"

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