misc/152543: listing color format cause kernel panic in .zfs dir

[Chris]

>Number:         152543
>Category:       misc
>Synopsis:       listing color format cause kernel panic in .zfs dir
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Nov 24 12:00:24 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator:     Chris
>Release:        8.1-RELEASE-p1
>Organization:
>Environment:
FreeBSD web1.xxx.net 8.1-RELEASE-p1 FreeBSD 8.1-RELEASE-p1 #1: Thu Nov  4 20:52:19 EET 2010     root at web1.hostexpert.net:/usr/obj/usr/src/sys/XXX  amd64
>Description:
This machine is patched up to zfsv15 which may be very relevant.

If I change to a .zfs dir on any fileset eg. I have tank/home mounted on /usr/home so cd /usr/home/.zfs, and then run ls with colors it causes a kernel panic.

gnuls -a --color=always = panic
ls -aG = panic
ls = no panic

not tested gnuls with no colors and not tested 'ls -a', is a production server so I will need to wait until night for further testing.

no kernel dumps yet as no dumpdev configured, if using a zfs swap partition is safe (used in fstab) as a dumpdev I will configure it and repeat.

>How-To-Repeat:
cd /usr/home/.zfs (edit to path to .zfs dir)
ls -aG
>Fix:
a workaround is just run plain ls, of course this means if usually alias ls then it needs to be unaliased.

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