[asterisk-bugs] [JIRA] (ASTERISK-22483) AST_LIST_INSERT_TAIL doesn't set field.next on added entry

[Kinsey Moore (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-22483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=210830#comment-210830 ] 

Kinsey Moore commented on ASTERISK-22483:
-----------------------------------------

Could you provide a backtrace for this issue?
                
> AST_LIST_INSERT_TAIL doesn't set field.next on added entry
> ----------------------------------------------------------
>
>                 Key: ASTERISK-22483
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-22483
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Functions/func_config
>    Affects Versions: 11.5.1
>         Environment: FreeBSD 9.1, i386
>            Reporter: Brian Scott
>            Assignee: Kinsey Moore
>            Severity: Minor
>         Attachments: linkedlists.diff
>
>
> AST_LIST_INSERT_TAIL macro in include/asterisk/linkedlists.h doesn't set field.next to NULL when adding new entries to the tail of the list.
> Multiple calls to AST_CONFIG (for different files) in the dialplan causes Asterisk to crash in func_config with a memory error.
> Code appears to assume that malloc'ed memory would be initialised to NULL. This isn't a safe assumption on some systems (in this case FreeBSD).
> A trivial patch is available or you can work out where the (elm)->field.next = NULL; goes for yourself.
> Thanks

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