On Aug 24,  9:45am, tron@colwyn.zhadum.org.uk (tron@colwyn.zhadum.org.uk) wrote:
-- Subject: kern/34270: Unmounting an NFS filesystem causes a kernel panic

| >Number:         34270
| >Category:       kern
| >Synopsis:       Unmounting an NFS filesystem causes a kernel panic
| >Confidential:   no
| >Severity:       serious
| >Priority:       medium
| >Responsible:    kern-bug-people
| >State:          open
| >Class:          sw-bug
| >Submitter-Id:   net
| >Arrival-Date:   Thu Aug 24 09:45:05 +0000 2006
| >Originator:     tron@colwyn.zhadum.org.uk
| >Release:        NetBSD 4.99.1 2006-08-24 sources
| >Organization:
| Matthias Scheler                                  http://zhadum.org.uk/
| >Environment:
| System: NetBSD lyssa.zhadum.org.uk 4.99.1 NetBSD 4.99.1 (LYSSA) #0: Wed Aug 23 09:36:51 BST 2006 tron@lyssa.zhadum.org.uk:/src/sys/compile/LYSSA i386
| Architecture: i386
| Machine: i386
| >Description:
| After upgrading to a kernel built from today's NetBSD-current system my
| desktop crashed twice with a panic like this:
| 
| multiply freed item 0xc2723600
| panic: free: duplicated free
| 
| Here is what "gdb" gets out of the crash dump:
| 

Fixed (nfs_vfsops.c 1.161)

christos