Re: [linux-usb-devel] Re: oops with USB Storage on 2.6.14

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On 11/1/05, Alan Stern <[email protected]> wrote:
> On Sun, 30 Oct 2005, Andrew Morton wrote:
>
> > Masanari Iida <[email protected]> wrote:
>
> > > Hello Andrew,
> > >
> > > I did disabled CONFIG_DEBUG_PAGEALLOC and re-tested on 2.6.14-rc1.
> > > Now the oops didn't happen when I connect digital camera to the USB.
> >
> > So the first oops was probably use-after-free.
> >
> > > I could mount the camera as USB storage.
> > > But oops still happen when I turned the camera power off.
> > > (This oops didn't halt my system, BTW)
> > >
> > > # Unable to handle kernel paging request at virtual address 6b6b6bb3
> > >   printing eip:
> > > c02b88ca
> > > *pde = 00000000
> > > Oops: 0002 [#1]
> > > SMP
> > > Modules linked in: autofs e100 ipt_LOG ipt_state ip_conntrack
> > > ipt_recent iptable_filter ip_tables video rtc
> > > CPU:    0
> > > EIP:    0060:[<c02b88ca>]    Not tainted VLI
> > > EFLAGS: 00010296   (2.6.14-rc1)
> > > EIP is at scsi_remove_device+0x3a/0x50
>
> > > If you need some more test, let me know.
> > > In that case, please specify which version of kernel you want me to test.
> > >
> >
> > OK, thanks.  This is a different bug.  Presumably in USB.
>
> This was fixed in later releases of 2.6.14-rc.
>
> I wasn't able to reproduce the original problem, even after setting
> CONFIG_DEBUG_PAGEALLOC.
>
> Alan Stern
>
Alan,

Confirm the " scsi_remove_device " oops didn't happen on 2.4.14.
Talking about the original PANIC, as I have a workaround
(CONFIG_DEBUG_PAGEALLOC disabled),  I agree to close my report, now.

Thank you.

Masanari Iida
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