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SubjectRe: [PATCH v3 0/6] hid: Introduce device groups
On Mon, 30 Apr 2012, Jiri Kosina wrote:

> > Here is the third version of the extension to the device-driver
> > matching mechanism. AFAICT, there are no outstanding issues. I think
> > we are getting close. :-)
>
> I think so, and overall I like the aproach and the implementation. Thanks!
>
> Just got the stacktrace on [1] though when running kernel with this
> patchset. The trace popped during shutdown, and the machine froze
> completely; I didn't have any kind of external console connected, so
> unfortunately I don't have the beginning of the whole thing.
>
> I haven't been able to reproduce it so far. This was after several
> "parallel" plug/remove cycles of multiple HID devices driven by multiple
> different drivers.
>
> I haven't performed any analysis what this might be yet.
>
> [1] http://www.jikos.cz/jikos/junk/autoloading-trace.jpg

It actually seems to be spinlock lockup (due to the NMI trigger being
apparent at the very first line) on kbd_event_lock ...

--
Jiri Kosina
SUSE Labs


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