kbdmux vs ATA? (was: ATA related panic during ZFS scrub)

[Ivan Voras]

Mark Powell wrote:
> Hi,
>   Got a panic I'd not seen before, yesterday, whilst scrubbing one of
> two pools, to fix the apparently spurious CRC errors highlighted here:
> 
> http://kerneltrap.org/mailarchive/freebsd-current/2009/4/7/5428764
> 
> 4GB RAM amd64
> 
> 8.0-CURRENT FreeBSD 8.0-CURRENT #0 r190198M: Sat Mar 21 16:13:09 GMT 2009
> 
> 
>   Sorry, but I don't have a serial console or dump device valid in a
> panic. Here are screenshots:
> 
> http://www.rootshell.be/~msp/IMG_4393.JPG

Hmmm, this shows a lock order problem between ATA and kbdmux's Giant.

> / is ufs on USB key

Are you saying the system has only USB drives or that the ZFS pool was
on the USB drive (or something else)?

In any case, USB drives do not appear as ATA drives.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 258 bytes
Desc: OpenPGP digital signature
Url : http://lists.freebsd.org/pipermail/freebsd-current/attachments/20090408/4bcd8915/signature.pgp