[asterisk-bugs] [JIRA] (DAHLIN-340) race condition after upgrading to kernel 3.16.2

[Shaun Ruffell (JIRA)]

     [ https://issues.asterisk.org/jira/browse/DAHLIN-340?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Shaun Ruffell updated DAHLIN-340:
---------------------------------

    Attachment: 0001-dahdi-Fix-failure-to-read-write-on-kernel-3.16.patch

I think I see what the offending change in the kernel is. Notes are the comment  of the attached [^0001-dahdi-Fix-failure-to-read-write-on-kernel-3.16.patch].

> race condition after upgrading to kernel 3.16.2
> -----------------------------------------------
>
>                 Key: DAHLIN-340
>                 URL: https://issues.asterisk.org/jira/browse/DAHLIN-340
>             Project: DAHDI-Linux
>          Issue Type: Bug
>      Security Level: None
>          Components: dahdi (the module)
>    Affects Versions: 2.10.0
>         Environment: fedora 20 64-bit, wct1_xxp
>            Reporter: Thomas B. Clark
>            Assignee: Russ Meyerriecks
>            Severity: Blocker
>         Attachments: 0001-dahdi-Fix-failure-to-read-write-on-kernel-3.16.patch
>
>
> The dahdi modules load successfully.  However, starting Asterisk results in a race condition that writes the following error at the rate of about 1GB/minute
> [Sep 14 09:48:16] WARNING[21296] chan_dahdi.c: Read failed with -1: Invalid argument
> It brings my system to a crawl in about 30 seconds.
> Downgrading to kernel 3.15.10 resolves the issue.
> I do not see any other clues in the log.



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