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SubjectRe: 2.6.12-rc1-bk2+PREEMPT_BKL: Oops at serio_interrupt
On Tue, 29 Mar 2005 23:49:55 +0400, Alexey Dobriyan <adobriyan@mail.ru> wrote:
> On Tuesday 29 March 2005 23:02, Dmitry Torokhov wrote:
> > On Tue, 29 Mar 2005 21:28:20 +0400, Alexey Dobriyan <adobriyan@mail.ru> wrote:
> > > On Tuesday 29 March 2005 10:27, Dmitry Torokhov wrote:
> > > > On Monday 28 March 2005 12:26, Alexey Dobriyan wrote:
> > > > > Steps to reproduce for me:
> > > > > * Boot CONFIG_PREEMPT_BKL=y kernel (.config, dmesg are attached)
> > > > > * Start rebooting
> > > > > * Start moving serial mouse (I have Genius NetMouse Pro)
> > > > > * Right after gpm is shut down I see the oops
> > > > > * The system continues to reboot
> > > >
> > > > Could you try the patch below, please? Thanks!
> > >
> > > > Input: serport - fix an Oops when closing port - should not call
> > > > serio_interrupt when serio port is being unregistered.
> > >
> > > Doesn't work, sorry. Even worse: rebooting now also produces many pages of
> > > oopsen, then hang the system. I'm willing to test any new patches.
> >
> > Does it oops at the same place with this patch or at some other place?
>
> I manage to find this in the logs (nothing more :-( ):
> ============================================================================
> Unable to handle kernel NULL pointer dereference at virtual address 00000068
> printing eip:
> c0202947
> *pde = 00000000
> Oops: 0000 [#1]
> PREEMPT
> Modules linked in: ipt_REJECT ipt_state ip_conntrack iptable_filter ip_tables binfmt_misc uhci_hcd snd_intel8x0 snd_ac97_codec snd_pcm snd_timer snd soundcore snd_page_alloc floppy
> CPU: 0
> EIP: 0060:[<c0202947>] Not tainted VLI
> EFLAGS: 00010282 (2.6.12-rc1-bk2-serio)
> ============================================================================
> According to vmlinux, c0202947 is at:
>
> c020293e <serport_ldisc_write_wakeup>:

Ok, I have seen this OOPS before - it is a bit different scenario and
I am trying to look into it.

--
Dmitry
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