Re: WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:264 dev_watchdog+0x276/0x280()

From: poma <pomidorabelisima-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: Stanislaw Gruszka
	<sgruszka-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	Mailing-List fedora-kernel
	<kernel-TuqUDEhatI4ANWPb/1PvSmm0pvjS0E/A@public.gmane.org>,
	Josh Boyer <jwboyer-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	Linux Kernel list
	<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Jamal Hadi Salim <jhs-jkUAjuhPggJWk0Htik3J/w@public.gmane.org>,
	"Justin M. Forbes"
	<jforbes-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	Alexey Kuznetsov <kuznet-v/Mj1YrvjDBInbfyfbPRSQ@public.gmane.org>,
	Intel Corporation
	<linux.nics-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Subject: Re: WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:264 dev_watchdog+0x276/0x280()
Date: Wed, 19 Feb 2014 05:37:53 +0100	[thread overview]
Message-ID: <53043521.4060206@gmail.com> (raw)
In-Reply-To: <530332B7.10909-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

On 18.02.2014 11:15, poma wrote:
> 
> Ahoy!
> 
> Debugging S3 aka suspend produces 'WARNINGS':
> 
> Steps to Reproduce:
> # echo core > /sys/power/pm_test
> # cat /sys/power/pm_test
> none [core] processors platform devices freezer
> # echo mem > /sys/power/state
> Results:
> - dmesg-3.14.0-0.rc3.git0.1.fc21.x86_64+debug-pm_test-core.diff
>   https://bugzilla.redhat.com/attachment.cgi?id=864436
> 
> Steps to Reproduce:
> # echo processors > /sys/power/pm_test
> # cat /sys/power/pm_test
> none core [processors] platform devices freezer
> # echo mem > /sys/power/state
> Results:
> - dmesg-3.14.0-0.rc3.git0.1.fc21.x86_64+debug-pm_test-processors.diff
>   https://bugzilla.redhat.com/attachment.cgi?id=864438
> 
> Steps to Reproduce:
> # echo platform > /sys/power/pm_test
> # cat /sys/power/pm_test
> none core processors [platform] devices freezer
> # echo mem > /sys/power/state
> Results:
> - dmesg-3.14.0-0.rc3.git0.1.fc21.x86_64+debug-pm_test-platform.diff
>   https://bugzilla.redhat.com/attachment.cgi?id=864439
> 
> RHBZ 1010764:
> "[abrt] NETDEV WATCHDOG: em1 (e1000e): transmit queue 0 timed out"
> https://bugzilla.redhat.com/show_bug.cgi?id=1010764
> 
> Tested with Rawhide 'kernel-debug-3.14.0-0.rc3.git0.1.fc21.x86_64'
> http://koji.fedoraproject.org/koji/buildinfo?buildID=498711

A comparison of 'RealTek RTL-8169 GE' & 'SysKonnect GE'

Debugging S3 - core:
# echo core > /sys/power/pm_test
# echo mem > /sys/power/state
  RTL8169:
- dmesg-3.14.0-0.rc3.git2.1.fc21.x86_64-r8169-pm_test-core.diff
  https://bugzilla.redhat.com/attachment.cgi?id=864959
  SKGE:
- dmesg-3.14.0-0.rc3.git2.1.fc21.x86_64-skge-pm_test-core.diff
  https://bugzilla.redhat.com/attachment.cgi?id=864960

Debugging S3 - processors:
# echo processors > /sys/power/pm_test
# echo mem > /sys/power/state
  RTL8169:
- dmesg-3.14.0-0.rc3.git2.1.fc21.x86_64-r8169-pm_test-processors.diff
  https://bugzilla.redhat.com/attachment.cgi?id=864961
  SKGE:
- dmesg-3.14.0-0.rc3.git2.1.fc21.x86_64-skge-pm_test-processors.diff
  https://bugzilla.redhat.com/attachment.cgi?id=864962

Debugging S3 - platform:
# echo platform > /sys/power/pm_test
# echo mem > /sys/power/state
  RTL8169:
- dmesg-3.14.0-0.rc3.git2.1.fc21.x86_64-r8169-pm_test-platform.diff
  https://bugzilla.redhat.com/attachment.cgi?id=864963
  SKGE:
- dmesg-3.14.0-0.rc3.git2.1.fc21.x86_64-skge-pm_test-platform.diff
  https://bugzilla.redhat.com/attachment.cgi?id=864964

RHBZ
https://bugzilla.redhat.com/show_bug.cgi?id=1010764

Tested with Rawhide ' kernel-3.14.0-0.rc3.git2.1.fc21.x86_64'
http://koji.fedoraproject.org/koji/buildinfo?buildID=499061


poma

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