[rhelv6-list] WARNING: at net/sched/sch_generic.c:261 dev_watchdog leads to unresponsive network

[Bryan Hepworth]

>
>Greetings all,
>
>I recently (~ 1 Jan) installed RHEL6 64bit on a system that has a:
>
>   Intel Corporation 82574L Gigabit Network Connection
>
>which uses the e1000e module.  Anyway, I've had nothing but trouble since.
>The network device becomes unresponsive after some seemingly random
>amount
>of time and a reboot is necessary to get it back functioning (reloading
>the module does not seem to help).  I filed this issue in bugzilla here:
>
>   https://bugzilla.redhat.com/show_bug.cgi?id=782586
>
>The standard error that comes to the console is:
>
>Jan 17 12:38:46 xxx kernel: WARNING: at net/sched/sch_generic.c:261
>dev_watchdog+0x26d/0x280() (Not tainted)
>Jan 17 12:38:46 xxx kernel: Hardware name: X9SCL/X9SCM
>Jan 17 12:38:46 xxx kernel: NETDEV WATCHDOG: eth0 (e1000e): transmit queu
>e 0 timed out
>
>This system is fully updated RHEL6.2.  Anybody seem this before / have
>ideas on what to try to make it stop! :)
>

Had something very similar to you, replaced the board and haven't had the problem since. Firmware update sounds like a plan.