Panic, 'giant not owned' kern_mutex.c:299

[Marcel Moolenaar]

On Tue, May 10, 2005 at 03:30:32PM -0400, Garance A Drosihn wrote:
> I just rebuilt my ppc system last night, and when I try to boot up
> off the new kernel I get:
> 
>    Trying to mount root from ufs:/dev/ad0s5
>    panic: mutex Giant not owned at /usr/src/sys/kern/kern_mutex.c:299
>    KDB: enter: panic
>    [thread pid 1 tid 100006 ]
>    Stopped at      0x259ae4:       lwz  r11, r1, 0x0
>    db>
> 
> Do you need more info than that?

This is the exact same thing I ran into on ia64. The problem appears
to be the default setting of the debug.mpsafevm tunable. If you set
it to 1 in the loader the problem is resolved, although you might
run into other issues. grehan@ is onto it, so you can also wait for
his commit and/or suggestion.

-- 
 Marcel Moolenaar	  USPA: A-39004		 marcel at xcllnt.net