[ZFS] umount at reboot crashes

[Andriy Gapon]

on 29/07/2009 08:49 James R. Van Artsdalen said the following:
> FreeBSD bigback.housenet.jrv 8.0-BETA2 FreeBSD 8.0-BETA2 #0 r195757M:
> Mon Jul 20 10:27:28 CDT 2009    
> james at bigback.housenet.jrv:/usr/obj/usr/src/sys/BIGTEX  amd64
> 
> I have a system that almost always crashes whenever it receives a ZFS
> replication package ("zfs recv") that either deleted or renames
> filesystems, both operations requiring unmounting.  Sometimes it crashes
> later in the "zfs recv", sometimes not until I reboot that system.
> 
> The sx_xlock() in frame 10 seems a common theme in these crashes.

Could you please try a patch posted by Pawel in a parallel thread with subject
"zfs: Fatal trap 12: page fault while in kernel mode"?

Please followup with your results and CC Pawel.
Thank you!

-- 
Andriy Gapon