On Tuesday 29 March 2005 23:02, Dmitry Torokhov wrote:
> On Tue, 29 Mar 2005 21:28:20 +0400, Alexey Dobriyan <[email protected]> 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>:
c020293e: 8b 80 78 09 00 00 mov 0x978(%eax),%eax
c0202944: 8b 40 0c mov 0xc(%eax),%eax
c0202947: 8b 50 68 mov 0x68(%eax),%edx <<<<====
c020294a: 85 d2 test %edx,%edx
c020294c: 74 07 je c0202955 <serport_ldisc_write_wakeup+0x17>
c020294e: 8b 52 10 mov 0x10(%edx),%edx
c0202951: 85 d2 test %edx,%edx
c0202953: 75 01 jne c0202956 <serport_ldisc_write_wakeup+0x18>
c0202955: c3 ret
c0202956: ff d2 call *%edx
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