anyone recognize this panic?

Kris Kennaway kris at
Sat Feb 25 22:13:44 PST 2006

On Sat, Feb 25, 2006 at 10:08:47PM -0800, Garrett Cooper wrote:
> Kris Kennaway wrote:
> >On Sat, Feb 25, 2006 at 10:33:06PM -0500, Robert Huff wrote:
> > 
> >
> >>	I just had my -CURRENT* machine crash under moderate load.  No
> >>dump is available because the machine locked hard, but I did copy
> >>this off the screen:
> >>
> >>re0: diagnostic failed to receive packet in loopback mode
> >>re0: attach aborted due to hardware diagnostic failure
> >>panic: mtx_lock() of spin mutex (null) @ /usr/src/sys/netinet/in_pcb,c:862
> >>
> >>	"re0" is a Linksys EG-1032, less than two months old.  It was
> >>connected, but had zero traffic at the time of the crash.
> >>	Before I take this to current@ - has anyone seen anything like
> >>this before?  A quick check of the archives and the web in general
> >>didn't show anything.
> >>   
> >>
> >
> >You need to at least get a traceback from the panic, and preferably a
> >crashdump.
> >
> >Kris
> > 
> >
> Probably should pass this onto some devs. It seems like a null value was 
> passed for locking a mutex in the OS, which is important. Having a 
> traceback would be good though... but at least mentioning that the issue 
> laid with the re (?) kernel driver would be a start.

Unfortunately without a traceback the panic string is useless since it
gives you no clue about how the system got into that state.  This kind
of panic is often a secondary effect of some other problem.

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