Re: crash by cdc_acm driver in kernels 4.8-rc1/5

From	Oliver Neukum <oneukum@suse.com>
Newsgroups	linux.kernel
Subject	Re: crash by cdc_acm driver in kernels 4.8-rc1/5
Date	2016-10-06 13:00 +0200
Message-ID	<spez7-7uF-3@gated-at.bofh.it> (permalink)
References	(6 earlier) <sm3Ae-3oW-37@gated-at.bofh.it> <smjbX-4Pw-9@gated-at.bofh.it> <smoEF-8kS-7@gated-at.bofh.it> <smoY1-8rL-3@gated-at.bofh.it> <smJzr-4DI-13@gated-at.bofh.it>
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On Thu, 2016-09-29 at 15:26 +0200, Wim Osterholt wrote:
> On Wed, Sep 28, 2016 at 05:23:30PM +0200, Oliver Neukum wrote:
> > > 
> > > HP src # sync
> > > HP src # [ 3744.914184] BUG: unable to handle kernel NULL pointer dereference at 00000249
> > 
> > The last view lines before that please with the debugging level ramped
> > up to 9 please.
> 
> Recompiled again, double checked if it was really the new module.
> That doesn't seem to make any difference at all.

Hi,

sorry for the delay. Your results are strange and we will have to do it
the hard way. Could you retest with the attached patch applied
in addition to the last patch I sent?
I can see no good reason for a crash where you see a crash, so brute
force is called for.

	Regards
		Oliver

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Re: crash by cdc_acm driver in kernels 4.8-rc1/5 Wim Osterholt <wim@djo.tudelft.nl> - 2016-09-27 18:40 +0200
  Re: crash by cdc_acm driver in kernels 4.8-rc1/5 Oliver Neukum <oneukum@suse.com> - 2016-09-28 11:20 +0200
    Re: crash by cdc_acm driver in kernels 4.8-rc1/5 Wim Osterholt <wim@djo.tudelft.nl> - 2016-09-28 16:50 +0200
    Re: crash by cdc_acm driver in kernels 4.8-rc1/5 Wim Osterholt <wim@djo.tudelft.nl> - 2016-09-28 17:10 +0200
      Re: crash by cdc_acm driver in kernels 4.8-rc1/5 Oliver Neukum <oneukum@suse.com> - 2016-09-28 17:30 +0200
        Re: crash by cdc_acm driver in kernels 4.8-rc1/5 Wim Osterholt <wim@djo.tudelft.nl> - 2016-09-29 15:30 +0200
          Re: crash by cdc_acm driver in kernels 4.8-rc1/5 Oliver Neukum <oneukum@suse.com> - 2016-10-06 13:00 +0200

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