Date: Sun, 09 May 2004 02:50:41 -0500 From: Jonathan <j.e.drews@worldnet.att.net> To: FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: vinvalbuf panic while shutting down Message-ID: <1084089040.227.29.camel@mobile.silbsd.org> In-Reply-To: <1083129282.20619.18.camel@mobile.silbsd.org> References: <1083129282.20619.18.camel@mobile.silbsd.org>
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FreeBSD 5.2-CURRENT #0: Sat May 8 17:45:59 CDT 2004
Hi:
I get a kernel panic when I deliberately remove a umass storage device
that is still mounted. The machine panics after the halt command. I
recopied these messages.
umass0: at uhb1 port 2 (addr 2) disconnected
(pass0:umass-sim0:0:0:0): lost device
(pass0:umass-sim0:0:0:0): removing device entry
(pass0:umass-sim0:0:0:0): lost device
umass0: detached
Fatal trap 12: page fault while in kernel mode
fault virtual address =0xb9a558c0
fault code = supervisor write, page not present
instruction pointer = 0x8:0xc04437cb
stack pointer = 0x10:0xd6bebaa8
frame pointer = 0x10:0xd6bebaac
code segement = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 1 (init)
trap number = 12
panic: page fault
at line 815 in file /usr/src/sys/i386/i386/trap.c
On Wed, 2004-04-28 at 00:14, Jonathan wrote:
> uname: 5.2-CURRENT #0: Sun Apr 25 22:37 CDT
> i386
> compiled using std make.conf ( only -O for optimization)
>
>
> While shutting down my FreeBSD laptop, I got this panic:
>
> panic: vinvalbuf: dirty bufs
> at line 921 in file /usr/src/sys/kern/vfs_subr.c
>
> I had just detached a USB mass storage device (umass) and then given the
> command "halt", when the panic happened. I may have forgotten to do
> umount /mnt, which may have caused the panic ? FreeBSD CURRENT has
> worked fine beside this first panic.
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