kern/189355: zfs panic on root mount 10-stable

[Radim Kolar]

>Number:         189355
>Category:       kern
>Synopsis:       zfs panic on root mount 10-stable
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun May 04 13:40:00 UTC 2014
>Closed-Date:
>Last-Modified:
>Originator:     Radim Kolar
>Release:        10-STABLE
>Organization:
Z
>Environment:
i386
>Description:
I upgraded 10.0-RELEASE to 10.0-STABLE, can not mount root anymore zfs panics on boot. After rebooting with 10.0-RELEASE ISO i can zpool import without errors.

I do not have dump, because panic is before filesystem is mounted.

panic: double fault

stacktrace

vdev_queue_io_to_issue
vdev_queue_io
zio_vdev_io_start
zio_execute
vdev_mirror_io_start
zio_vdev_io_start
zio_execute
zio_gang_tree_assemble
zio_gang_assemble
zio_execute
spa_load_verify_cb
traverse_visitbp
traverse_visitbp
traverse_dnode
traverse_visitbp
traverse_visitbp
>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: