Panic in 8.1 in softclock(): mutex Giant not owned at ../../../../sys/kern/kern_mutex.c:185

[Ryan Stone]

On Wed, Feb 15, 2012 at 10:20 PM, Vijay Singh <vijju.singh at gmail.com> wrote:
> I hit the assert in line 405. So right after locking Giant, it is
> found unlocked!!!

Try running kldload/kldunload with INVARIANTS enabled.  I would
suspect that you're hitting a case where the kldload code is unlocking
Giant when it doesn't own it.