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

From: poma <pomidorabelisima@gmail.com>
To: netdev@vger.kernel.org
Cc: Intel Corporation <linux.nics@intel.com>,
	Mailing-List fedora-kernel <kernel@lists.fedoraproject.org>,
	Linux Kernel list <linux-kernel@vger.kernel.org>,
	Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>,
	Jamal Hadi Salim <jhs@mojatatu.com>,
	Stanislaw Gruszka <sgruszka@redhat.com>,
	Josh Boyer <jwboyer@redhat.com>,
	"Justin M. Forbes" <jforbes@redhat.com>
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@gmail.com>

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