Fatal trap 9 triggered by zfs?

[Thomas Backman]

On Dec 4, 2009, at 8:56 PM, Stefan Bethke wrote:

> Am 04.12.2009 um 17:52 schrieb Stefan Bethke:
> 
>> I'm getting panics like this every so often (couple weeks, sometimes just a few days.) A second machine that has identical hardware and is running the same source has no such problems.
>> 
>> FreeBSD XXX.hanse.de 8.0-STABLE FreeBSD 8.0-STABLE #16: Tue Dec  1 14:30:54 UTC 2009     root at XXX.hanse.de:/usr/obj/usr/src/sys/EISENBOOT  amd64
>> 
>> # zpool status
>> pool: tank
>> state: ONLINE
>> scrub: none requested
>> config:
>> 
>> 	NAME        STATE     READ WRITE CKSUM
>> 	tank        ONLINE       0     0     0
>> 	  ad4s1d    ONLINE       0     0     0
>> # cat /boot/loader.conf
>> vfs.zfs.arc_max="512M"
>> vfs.zfs.prefetch_disable="1"
>> vfs.zfs.zil_disable="1"
> 
> Got another, different one.  Any tuning suggestions or similar?
> 
> 
> #6  0xffffffff80586c7a in vm_map_entry_splay (addr=Variable "addr" is not available.
> )
>    at /usr/src/sys/vm/vm_map.c:771
> #7  0xffffffff80587f37 in vm_map_lookup_entry (map=0xffffff00010000e8, 
>    address=18446743523979624448, entry=0xffffff80625db170)
>    at /usr/src/sys/vm/vm_map.c:1021
> #8  0xffffffff80588aa3 in vm_map_delete (map=0xffffff00010000e8, 
>    start=18446743523979624448, end=18446743523979689984)
>    at /usr/src/sys/vm/vm_map.c:2685
> #9  0xffffffff80588e61 in vm_map_remove (map=0xffffff00010000e8, 
>    start=18446743523979624448, end=18446743523979689984)
>    at /usr/src/sys/vm/vm_map.c:2774
> #10 0xffffffff8057db85 in uma_large_free (slab=0xffffff005fcc7000)
>    at /usr/src/sys/vm/uma_core.c:3021
> #11 0xffffffff80325987 in free (addr=0xffffff80018b0000, 
>    mtp=0xffffffff80ac61e0) at /usr/src/sys/kern/kern_malloc.c:471
> #12 0xffffffff80a36d03 in vdev_cache_evict (vc=0xffffff0001723ce0, 
>    ve=0xffffff003dd52200)
>    at /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_cache.c:151
> #13 0xffffffff80a372ad in vdev_cache_read (zio=0xffffff005f5ca2d0)
>    at /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_cache.c:182
Bad RAM/motherboard? My first thought when I read your first mail (re: identical hardware) was bad hardware, and this seems to point towards that too, no?
Have you tried memtest86+?

Regards,
Thomas