Date: Tue, 28 Feb 2006 07:57:37 GMT From: Edwin Sheldon <hungsquirrel@gmail.com> To: freebsd-gnats-submit@FreeBSD.org Subject: amd64/93930: Page fault on `kldunload snd_driver` Message-ID: <200602280757.k1S7vbuS073638@www.freebsd.org> Resent-Message-ID: <200602280800.k1S80Gu7039607@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
>Number: 93930
>Category: amd64
>Synopsis: Page fault on `kldunload snd_driver`
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: freebsd-amd64
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue Feb 28 08:00:15 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator: Edwin Sheldon
>Release: 6.1-BETA2
>Organization:
>Environment:
FreeBSD deltron.hungsquirrel.org 6.1-BETA2 FreeBSD 6.1-BETA2 #0: Thu Feb 16 22:41:50 UTC 2006 root@bloom.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64
>Description:
Upon executing `kldunload snd_driver`, the system reboots. dmesg shows a page fault when the command was executed.
tail of dmesg:
----------------------------
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x29
fault code = supervisor read, page not present
instruction pointer = 0x8:0xffffffff80556277
stack pointer = 0x10:0xffffffffae55ba30
frame pointer = 0x10:0xffffff004fedfe00
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 5983 (kldunload)
trap number = 12
panic: page fault
Uptime: 6h14m46s
Cannot dump. No dump device defined.
Automatic reboot in 15 seconds - press a key on the console to abort
>How-To-Repeat:
# kldload snd_driver
# kldunload snd_driver
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200602280757.k1S7vbuS073638>