Re: Random reboots on 4.99.72

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

Wow!  It seems that this last time I _did_ get a core file!

This is from the NFS server and build machine.  It's a quad-core amd64 
with 8GB RAM (however only 4GB is enabled).

(gdb) target kvm netbsd.9.core
#0  cpu_reboot (howto=260, bootstr=<value optimized out>)
    at /build/src/sys/arch/amd64/amd64/machdep.c:656
656                     splx(s);
(gdb) bt
#0  cpu_reboot (howto=260, bootstr=<value optimized out>)
    at /build/src/sys/arch/amd64/amd64/machdep.c:656
#1  0xffffffff8029730b in panic (fmt=0xffffffff8045b900 "trap")
    at /build/src/sys/kern/subr_prf.c:258
#2  0xffffffff8032ce64 in trap (frame=0xffff80004c08c1c0)
    at /build/src/sys/arch/amd64/amd64/trap.c:254
#3  0xffffffff80101002 in calltrap ()
#4  0xffffffff802961db in kprintf (fmt0=0x0, oflags=Cannot access memory at 
address 0xffffffffffffff7c)
    at /build/src/sys/kern/subr_prf.c:1463
Previous frame inner to this frame (corrupt stack?)
(gdb)

On Mon, 4 Aug 2008, Paul Goyette wrote:

> I've just updated my systems from 4.99.67 to 4.99.72 (sources current as of 
> about 36 hours ago) and so far I've had at least half a dozen random reboots. 
> In all cases there are no crash dumps.  (Well, that's not entirely true: 
> once I caught it dumping to disk, but savecore didn't find anything on the 
> reboot.)
>
> This has happened at least four or five times on a very lightly-loaded 
> dual-CPU amd64 box.  This box does nothing except NAT and routing between the 
> internal and external network.  It has also happened just now for the second 
> time on a fairly heavily loaded quad-CPU amd64 box, which is my NFS server 
> and build machine.
>
> I don't have serial console, and all boxes generally run X, so it's not very 
> likely that I'll actually catch it in the act.
>
> Is anyone else seeing anything strange with -current?  Any hints on how to 
> debug this?
>
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|   Paul Goyette   | PGP DSS Key fingerprint: |  E-mail addresses:   |
| Customer Service | FA29 0E3B 35AF E8AE 6651 |  paul%whooppee.com@localhost   |
| Network Engineer | 0786 F758 55DE 53BA 7731 | pgoyette%juniper.net@localhost |
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