Re: [PATCH v2] floppy: refactor open() flags handling (was Re: mm: uninterruptable tasks hanged on mmap_sem)

On Fri, 5 Feb 2016, Dmitry Vyukov wrote:

I don't have any objections. And I agree that it does not make sense
to spend any considerable time on optimizing this driver.

Yeah, on a second thought this definitely is the way how to deal with this 
in this particular driver.

quoted

Alternatively we can take more conservative aproach, accept the
nonblocking flag, but do the regular business of the driver.

Actually, let's try that, to make sure that we don't introduce userspace
breakage.

Could you please retest with the patch below?

Reapplied.

Thanks. Once/if you confirm that syzkaller is not able to reproduce the 
problem any more, I'll queue it and push to Jens.

-- 
Jiri Kosina
SUSE Labs

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