>Number:         36053
>Category:       kern
>Synopsis:       hfs panic
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Mar 21 16:30:03 +0000 2007
>Originator:     Timm Wetzel
>Release:        -current, kernel: 4.99.15/2007-03-19, userland: releng 200703100002Z
>Organization:
>Environment:
NetBSD/macppc iBook G3
>Description:
A long directory listing of an HFS volume panics the kernel: (transcription by hand)

panic:lockmgr release of unlocked lock! (flags 0, sharecount 0, exclusivecount 0, recursecount 0, waitcount 0, wmesg vnlock)
db> bt
panic
lockpanic
lockmgr
genfs_unlock
VOP_UNLOCK
vput
namei
do_sys_stat
sys___lstat30
syscall_plain

The kernel is GENERIC plus hfs, DEBUG, DIAGNOSTIC minus many PCI/cardbus devices. The HFS volume is a small 8.5MB Apple_Boot partition containing bootinfo.txt, ofwboot.xcf, kernel and volume name icon. It's unlikely to matter, but both root and HFS partitions are on a FireWire disk.

>How-To-Repeat:
mount -v -t hfs -r /dev/sd0a /mnt
ls /mnt     # OK
ls -l /mnt  # panic
>Fix: