Distribution: FC6
Hardware Environment: x86 uniprocessor Pentium 1.8GHz
Software Environment: Standard Distro
Problem Description:

During a stress test on the wireless network, a "modprobe -r zd1211" command throws this exception:

KERNEL: assertion (!timer_pending(&dev->watchdog_timer)) failed at net/sched/sch_generic.c (608)

and after that, a modprobe will just hang.

We have seen another user reporting this problem, but no resolution was reported. 

Steps to reproduce:

Very hard to reproduce. But can be done with a ping flood to the network, and waiting for a 6-8 hours before calling a "modprobe -r".