I had a longer look at this, and a more complete patch is logged as PR
kern/18270 (try at your own risk: it works for me).
I'd appreciate someone more experienced having a look at it and
commenting.
Cheers,
Peter.
Wilko Bulte wrote:
>
> On Wed, Apr 26, 2000 at 04:25:46PM +0100, Peter Edwards (local) wrote:
>
> How about send-pr ing this stuff?
>
> Wilko
>
> > Hi,
> > After a (very) quick look at the source it looks like there's a missing
> > cdevsw_remove() missing from the MOD_UNLOAD/MOD_SHUTDOWN event handling
> > I haven't time to test it, but try this:
> >
> > *** vn.c.old Wed Apr 26 16:23:03 2000
> > --- vn.c Wed Apr 26 16:24:06 2000
> > ***************
> > *** 762,767 ****
> > --- 762,768 ----
> > case MOD_UNLOAD:
> > /* fall through */
> > case MOD_SHUTDOWN:
> > + cdevsw_remove(&vn_cdevsw);
> > for (;;) {
> > vn = SLIST_FIRST(&vn_list);
> > if (!vn)
> >
> >
> > Maxim Sobolev wrote:
> > >
> > > Hi,
> > >
> > > I've already submitted this crash report earlier but it seems that developers
> > > in -current list are too busy discussing whether Matt allowed to commit his SMP
> > > work into 4.0 to pay attention to "ordinary" panic reports :-(. Following is
> > > slightly simplified course of actions which is known to produce kernel panic on
> > > both 4.0 and 5.0:
> > >
> > > root@notebook# kldstat
> > > Id Refs Address Size Name
> > > 1 2 0xc0100000 1c2f48 kernel
> > > 2 1 0xc02c3000 30c8 splash_bmp.ko
> > > root@notebook# mount /dev/vn0c /mnt
> > > mount: Device not configured
> > > root@notebook# kldload /modules/vn.ko
> > > root@notebook# kldstat
> > > Id Refs Address Size Name
> > > 1 3 0xc0100000 1c2f48 kernel
> > > 2 1 0xc02c3000 30c8 splash_bmp.ko
> > > 3 1 0xc0823000 3000 vn.ko
> > > root@notebook# kldunload -i 3
> > > root@notebook# mount /dev/vn0c /mnt
> > > [BINGO]
> > > Fatal trap 12: page fault while in kernel mode
> > > [...]
> > >
> > > -Maxim
>
> --
> Wilko Bulte Powered by FreeBSD http://www.freebsd.org
> http://www.tcja.nl
>
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