kern/89085: Running 'kldunload smbfs' without 'smbutil logout'
always panicing the system
Rostislav Krasny
rosti.bsd at gmail.com
Tue Nov 15 20:20:24 GMT 2005
>Number: 89085
>Category: kern
>Synopsis: Running 'kldunload smbfs' without 'smbutil logout' always panicing the system
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue Nov 15 20:20:22 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator: Rostislav Krasny
>Release: 6.0
>Organization:
>Environment:
FreeBSD saturn.lan 6.0-RELEASE FreeBSD 6.0-RELEASE #0: Wed Nov 2 23:45:48 IST 2005 root at saturn.lan:/usr/obj/usr/src/sys/GENERIC i386
>Description:
The system doesn't prevent unloading the smbfs.ko module when there is any yet opened SMB connection. The result is a panic.
>How-To-Repeat:
# kldload smbfs
netsmb_dev: loaded
# smbutil login //user at server
Password:
Connect to USER
# kldunload smbfs
smb_sm_done: 1 connection still active
netsmb_dev: unload
#
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0xc17c295d
fault code = supervisor read, page not present
instruction pointer = 0x20:0xc17c295d
stack pointer = 0x28:0xcc8e2ce0
frame pointer = 0x28:0xcc8e2d10
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor flags = interrupt enabled, resume, IOPL = 0
current process = 596 (smbiod0)
trap number = 12
panic: page fault
Uptime: 15m7s
Dumping 127 MB (2 chunks)
[snip]
The server is Windows XP Professional SP2.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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