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Message-ID: <5654679A.3010109@profihost.ag>
Date: Tue, 24 Nov 2015 14:35:22 +0100
From: Stefan Priebe - Profihost AG <s.priebe@...fihost.ag>
To: Hannes Frederic Sowa <hannes@...essinduktion.org>,
Florian Weimer <fweimer@...hat.com>
Cc: Thomas Gleixner <tglx@...utronix.de>, netdev@...r.kernel.org,
linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Asterisk deadlocks since Kernel 4.1
Am 23.11.2015 um 13:57 schrieb Hannes Frederic Sowa:
> On Mon, Nov 23, 2015, at 13:44, Stefan Priebe - Profihost AG wrote:
>> Am 19.11.2015 um 20:51 schrieb Stefan Priebe:
>>>
>>> Am 19.11.2015 um 14:19 schrieb Florian Weimer:
>>>> On 11/19/2015 01:46 PM, Stefan Priebe - Profihost AG wrote:
>>>>
>>>>> I can try Kernel 4.4-rc1 next week. Or something else?
>>>>
>>>> I found this bug report which indicates that 4.1.10 works:
>>>>
>>>> <https://issues.asterisk.org/jira/browse/ASTERISK-25251>
>>>>
>>>> But in your original report, you said that 4.1.13 is broken.
>>>
>>> That's correct i'm running 4.1.13.
>>>
>>>> This backtrace:
>>>>
>>>> <https://issues.asterisk.org/jira/secure/attachment/52702/bt.txt>
>>>>
>>>> shows a lot of waiting on quite different netlink sockets. So if this
>>>> is due to a race in Asterisk, it must have happened several times in a
>>>> row.
>>
>> Kernel 4.4-rc2 works fine. How can we grab / get an idea which is
>> causing the isse in 4.1? It's an LTE kernel so it should be fixed!
>
> Thanks for testing. I was not able to reproduce it at all, with as much
> parallelism and threads as possible on any kernel. Could you try to do a
> git bisect?
OK i'll start digging around with major versions first to have a working
and a non working version.
I'll try 4.3 and 4.2 first to get an idea where it got fixed. Sadly i
can't bisect from 4.1.13 to 4.X so i have to verify first it also
happens with 4.1.
OK?
Stefan
>
> Thanks,
> Hannes
>
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