anyone recognize this panic?

Kent Stewart kstewart at
Sun Feb 26 11:24:30 PST 2006

On Saturday 25 February 2006 22:13, Kris Kennaway wrote:
> 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.

I can cause this to happen almost at will with a Netgear GA311. It only 
happens at boot. It will reboot after the panic just fine and, for me, 
it only happens repeatedly after I do a restart boot from XP. It has 
never happened if I shut the system down first. I have moved many GBs 
of distfiles and packages with out causing a panic.

I haven't found a way to cause a dmp when it panics. At least, what I 
have read doesn't work. So, how can I get a dmp, which I can provide a 


Kent Stewart
Richland, WA "I am Andean project".

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