Re: Soft lockup issue in Linux 4.1.9

On 10/02/15 08:52, Andre Tomt wrote:

On 01. okt. 2015 13:52, Eric Dumazet wrote:

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On Thu, Oct 1, 2015 at 4:43 AM, Holger Hoffstätte
[off-list ref] wrote:

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On 10/01/15 13:29, Eric Dumazet wrote:

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commit 83fccfc3940c4a2db90fd7e7079f5b465cd8c6af
Author: Eric Dumazet [off-list ref]
Date:   Thu Aug 13 15:44:51 2015 -0700

     inet: fix potential deadlock in reqsk_queue_unlink()

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Whohoo! It applies/builds cleanly to 4.1.10-rc1 and is running as
we speak. Let's hope that this fixes the lockups.

It definitely should help !

David, since patch is not yet seen on
http://patchwork.ozlabs.org/bundle/davem/stable/?state=*
could you please add it to your queue ?

Seems to fix it for me as well. 3 systems have been running varying
types of production-like loads with it for 14+ hours without hanging.

Just got up, and yes - my systems survived the night as well, no issues.

Greg, any chance you can drop this into the pending 4.1.10? Otherwise people
will get another broken release.

cheers
Holger