Re: Repeatable crash

[Paul Goyette <paul%whooppee.com@localhost>]

On Mon, 4 Feb 2008, Andrew Doran wrote:

> On Mon, Feb 04, 2008 at 03:40:02AM -0800, Paul Goyette wrote:
>
> > This is from a 4.99.49 kernel and userland built from sources dated
> > 2008-01-24 21:14:50 UTC
> >
> > Usually, I run build.sh on the machine that actually contains the
> > source, but this time I ran it on another host.  The entire /usr/src and
> > /usr/obj directories were NFS-mounted.  The crash happens about 30 or 40
> > minutes after starting build.sh and it happens at different places, so I
> > don't think it's data-specific;  rather I suspect some strange race
> > condition.  The back-traces don't seem terribly usefule (maybe gdb is
> > out-of-sync with the trap stack-frame again?).
>
> The trap frame layout changed, I think dsl%netbsd.org@localhost is looking at 
> it.
> Did you get anything out of ddb?

Transcribed by hand since I don't have a serial console:

kernel: protection fault trap, code=0
Stopped in pid 29318.1 (x86_64--netbsd-g) at    netbsd:nfs_loadattrcache+0x13c: 
cmpl     %ecx,0x10(%rbx)
nfs_loadattrcache() at netbsd:nfs_loadattrcache+0x13c
nfsm_loadattrcache() at netbsd:nfs_loadattrcache+0x70
nfs_lookup() at netbsd:nfs_lookup+0xdbd
VOP_LOOKUP() at netbsd:VOP_LOOKUP+0x49
lookup() at netbsd:lookup+0x345
namei() at netbsd:namei+0x1a1
sys_access() at netbsd:sys_access+0x97
syscall() at netbsd:syscall+0xa9

Unable to enter any commands at the ddb prompt - it appears that the 
keyboard (USB) is dead or interrupts blocked.

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