From: Andre Tomt <andre@tomt.net>
To: "Holger Hoffstätte" <holger.hoffstaette@googlemail.com>,
linux-kernel@vger.kernel.org
Subject: Re: Soft lockup issue in Linux 4.1.9
Date: Thu, 1 Oct 2015 06:41:46 +0200 [thread overview]
Message-ID: <560CB98A.10107@tomt.net> (raw)
In-Reply-To: <pan.2015.09.30.22.37.34@googlemail.com>
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.
next prev parent reply other threads:[~2015-10-01 4:41 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-30 21:59 Soft lockup issue in Linux 4.1.9 Olivier Bonvalet
2015-09-30 22:37 ` Holger Hoffstätte
2015-10-01 4:41 ` Andre Tomt [this message]
2015-10-01 10:51 ` Holger Hoffstätte
[not found] ` <560D1223.3070606@googlemail.com>
[not found] ` <CANn89i+B5T4Rhs8HnrC0+f+GhLvBFfpr4BVDvhkVOveSfy9B8Q@mail.gmail.com>
2015-10-01 11:43 ` Holger Hoffstätte
2015-10-01 11:52 ` Eric Dumazet
2015-10-02 6:52 ` Andre Tomt
2015-10-02 7:17 ` Holger Hoffstätte
2015-10-02 19:25 ` Wolfgang Walter
2015-10-03 19:14 ` Thomas D.
2015-10-17 23:41 ` Greg Kroah-Hartman
2015-10-02 20:04 ` Thomas Gleixner
2015-10-02 20:59 ` Eric Dumazet
2015-10-02 21:04 ` Thomas Gleixner
2015-10-02 21:32 ` Eric Dumazet
2015-10-08 16:56 ` Christoph Biedl
2015-10-08 19:27 ` Holger Hoffstätte
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