netdev - atl1: WARNING at net/sched/sch

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Date:	Thu, 21 Aug 2008 15:58:49 +0400
From:	adobriyan@...il.com
To:	jcliburn@...il.com, csnook@...hat.com
Cc:	netdev@...r.kernel.org
Subject: atl1: WARNING at net/sched/sch_generic.c:221

This message happens more or less every reboot, sometimes cable unplug/plug is needed
to restore connectivity, otherwise card is working fine.


[   22.570010] eth1: link up, 100Mbps, full-duplex, lpa 0x45E1
[   26.570011] NET: Registered protocol family 10
[   37.551934] eth0: no IPv6 routers present

	[rebooted box which is directly connected to a box with atl1]

[ 2078.740004] atl1 0000:03:00.0: eth0 link is down
[ 2080.790004] atl1 0000:03:00.0: eth0 link is up 1000 Mbps full duplex
[ 2086.049998] NETDEV WATCHDOG: eth0 (atl1): transmit timed out
[ 2086.050004] ------------[ cut here ]------------
[ 2086.050004] WARNING: at net/sched/sch_generic.c:221 dev_watchdog+0x205/0x220()
[ 2086.050004] Modules linked in: ipv6 ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 xt_state nf_conntrack iptable_filter ip_tables x_tables
[ 2086.052503] Pid: 0, comm: swapper Not tainted 2.6.27-rc4-netns-nf #4
[ 2086.052503] 
[ 2086.052503] Call Trace:
[ 2086.052503]  <IRQ>  [<ffffffff8023455f>] warn_on_slowpath+0x5f/0x80
[ 2086.052503]  [<ffffffff80259c00>] ? trace_hardirqs_on_caller+0x130/0x160
[ 2086.052503]  [<ffffffff80259b61>] ? trace_hardirqs_on_caller+0x91/0x160
[ 2086.052503]  [<ffffffff80259c3d>] ? trace_hardirqs_on+0xd/0x10
[ 2086.052503]  [<ffffffff80431ab5>] ? _spin_unlock_irqrestore+0x75/0x80
[ 2086.052503]  [<ffffffff8024676c>] ? __queue_work+0x3c/0x50
[ 2086.052503]  [<ffffffff80246814>] ? queue_work_on+0x44/0x60
[ 2086.052503]  [<ffffffff80246993>] ? queue_work+0x53/0x60
[ 2086.052503]  [<ffffffff803d4c35>] dev_watchdog+0x205/0x220
[ 2086.052503]  [<ffffffff80259c3d>] ? trace_hardirqs_on+0xd/0x10
[ 2086.052503]  [<ffffffff80259b61>] ? trace_hardirqs_on_caller+0x91/0x160
[ 2086.052503]  [<ffffffff803d4a30>] ? dev_watchdog+0x0/0x220
[ 2086.052503]  [<ffffffff8023eacc>] run_timer_softirq+0x18c/0x200
[ 2086.052503]  [<ffffffff80239e67>] __do_softirq+0x67/0xe0
[ 2086.052503]  [<ffffffff8020cc4c>] call_softirq+0x1c/0x30
[ 2086.052503]  [<ffffffff8020f2b5>] do_softirq+0x65/0xa0
[ 2086.052503]  [<ffffffff80239cf9>] irq_exit+0x99/0xb0
[ 2086.052503]  [<ffffffff8021d187>] smp_apic_timer_interrupt+0x97/0xf0
[ 2086.052503]  [<ffffffff8020c69b>] apic_timer_interrupt+0x6b/0x70
[ 2086.052503]  <EOI>  [<ffffffff802136ec>] ? mwait_idle+0x4c/0x60
[ 2086.052503]  [<ffffffff802136e3>] ? mwait_idle+0x43/0x60
[ 2086.052503]  [<ffffffff8020a276>] ? cpu_idle+0x46/0x90
[ 2086.052503]  [<ffffffff804266d0>] ? rest_init+0x70/0x80
[ 2086.052503] 
[ 2086.052503] ---[ end trace 4ccf372e8f6b84c3 ]---
[ 2086.070003] atl1 0000:03:00.0: eth0 link is up 1000 Mbps full duplex
[ 2090.390003] atl1 0000:03:00.0: eth0 link is down
[ 2092.550003] atl1 0000:03:00.0: eth0 link is up 1000 Mbps full duplex

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