linux-kernel - Re: regression: nfs mount (even idle) eventually hangs server

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Message-ID: <241c118c2fb60df744bbe351387fc29a34ff6ab9.camel@gmx.de>
Date:   Thu, 22 Dec 2022 04:42:26 +0100
From:   Mike Galbraith <efault@....de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     linux-nfs@...r.kernel.org
Subject: Re: regression: nfs mount (even idle) eventually hangs server

On Wed, 2022-12-21 at 10:56 +0100, Mike Galbraith wrote:
> > 6.1 didn't reproduce either, so it would appear to be a merge window bug.

Ah, not true, turning evolution loose in nfs mounted home and letting
it refresh mailboxes while desktop box was kept busy jammed up 6.1.0 in
fairly short order.  

homer:..debug/tracing # grep WARNING: /netconsole.log2
[ 3309.873094] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1655 __queue_delayed_work+0x6a/0x90
[ 3309.873446] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1657 __queue_delayed_work+0x5a/0x90
[ 3309.873780] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 3309.874120] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 3309.874452] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 3309.874783] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 3309.875099] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 3309.875426] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 3309.875745] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 3309.876064] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0
[ 3309.876383] WARNING: CPU: 1 PID: 78 at kernel/workqueue.c:1500 __queue_work+0x33b/0x3d0

Sigh.  Ok 6.0, batter up...

	-Mike