On Sunday 18 February 2007 4:28 pm, Andrew Morton wrote:
> On Mon, 19 Feb 2007 00:32:08 +0100 "Rafael J. Wysocki" <[email protected]> wrote:
>
> > One more thing:
> >
> > rtc_cmos 00:02: rtc core: registered rtc_cmos as rtc0
> > Unable to handle kernel NULL pointer dereference at 0000000000000030 RIP:
> > [<ffffffff804032c3>] rtc_sysfs_remove_device+0x23/0x50
> > ...
> > Call Trace:
> > [<ffffffff803c5786>] class_device_del+0x86/0x180
> > [<ffffffff803c5891>] class_device_unregister+0x11/0x20
> > [<ffffffff8040280e>] rtc_device_unregister+0x3e/0x50
> > [<ffffffff880cd789>] :rtc_cmos:cmos_pnp_probe+0x219/0x240
> > [<ffffffff803988a1>] pnp_device_probe+0xa1/0xe0
> > ...
>
> How did you provoke that? modprobe rtc-cmos?
Plus, I'd guess, the old rtc driver statically linked.
What I see is a should-not-happen fault of some kind in a cleanup
path that's been tested with non-PNP rtc drivers. A quick glance
at the code left me puzzled. Would sleeping a second or two before
calling rtc_device_unregister() change that behavior?
- Dave
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