lkml.org 
[lkml]   [2015]   [Oct]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: Soft lockup issue in Linux 4.1.9
From
Date
On 01. okt. 2015 00:37, Holger Hoffstätte wrote:
> On Wed, 30 Sep 2015 23:59:43 +0200, Olivier Bonvalet wrote:
>
>> for information, I've just upgraded 6 servers from Linux 4.1.8 to Linux
>> 4.1.9, and have some random soft lockup. If this can help :
>
> Congratulations! You're not the first one to get hit by this, but
> you are probably the first one to get a meaningful stacktrace! \o/
>
>> [ 204.478380] Call Trace:
>> [ 204.478381] <IRQ>
>> [ 204.478385] [<ffffffff81076121>] ? try_to_del_timer_sync+0x43/0x4d
>> [ 204.478386] [<ffffffff810760de>] ? del_timer+0x4d/0x4d
>> [ 204.478388] [<ffffffff8107614b>] ? del_timer_sync+0x20/0x3d
>
> Can you try to revert
>
> [PATCH 4.1 157/159] inet: fix races with reqsk timers
>
> and see how that works for you? I'll do the same on my end. So far the
> only thing I ever could gleam was an rcu stall after cpuidle_enter(),
> but never anything regarding the timer - though it was definitely
> related to NIC activity after idle.

I'm running with this patch reverted now as well. 2 hours no issues so
far, but I can't conclude anything yet as I've seen it take up to 6+
hours to explode here. As a result the bisect was going veeery slowly.


\
 
 \ /
  Last update: 2015-10-01 07:21    [W:0.095 / U:0.508 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site