kern/43122: panic browsing an smbfs mount with gtk2 apps

[hbent%cs.oberlin.edu@localhost]

>Number:         43122
>Category:       kern
>Synopsis:       panic browsing an smbfs mount with gtk2 apps
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Apr 04 22:00:00 +0000 2010
>Originator:     Henry Bent
>Release:        5.99.25
>Organization:
>Environment:
NetBSD aelfric 5.99.25 NetBSD 5.99.25 (AELFRIC_QUAD) #0: Thu Apr  1 21:38:10 
EDT 2010  root@aelfric:/usr/obj/src-current/sys/arch/i386/compile/AELFRIC_QUAD 
i386
>Description:
Browsing an smbfs mounted directory in any gtk2 file dialog box will eventually 
panic like this:

#0  0xc02851a1 in cpu_reboot ()
#1  0xc032b5d0 in panic ()
#2  0xc035acb4 in trap ()
#3  0xc010cb3f in calltrap ()
#4  0xc032892d in pool_get ()
#5  0xc030e408 in smb_t2_alloc ()
#6  0xc0314814 in smbfs_findnext ()
#7  0xc0312647 in smbfs_readvnode ()
#8  0xc0316649 in smbfs_readdir ()
#9  0xc03e05bf in VOP_READDIR ()
#10 0xc03d504d in vn_readdir ()
#11 0xc03cfc6e in sys___getdents30 ()
#12 0xc0340eab in syscall ()
#13 0xc0100524 in syscall1 ()

I'm not using any special options for the smbfs mounts.
>How-To-Repeat:
Mount an smbfs filesystem, browse files with gtk2 file dialog box.
>Fix: