Re: Patch: V4L stable versions 4.5.3 and 4.5.4

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Hi Mauro and David,

On Wed, May 11, 2016 at 05:38:23PM -0300, Mauro Carvalho Chehab wrote:
> Hi David,
> 
> Em Wed, 11 May 2016 20:05:22 +0100
> David R <david@xxxxxxxxxxxxxxx> escreveu:
> 
> > On 11/05/16 19:47, David R wrote:
> > > Hi
> > > 
> > > Please consider applying the attached patch (or something like it) to
> > > V4L2, and whatever is appropriate to the mainstream kernel. Without this
> > > my media server crashes and burns at boot.
> > > 
> > > See https://lkml.org/lkml/2016/5/7/88 for more details
> > > 
> > > Thanks
> > > David
> > >   
> > I see the offending patch was reverted earlier today. My box is fine
> > with my (more simple) alternative, but your call.
> 
> Yes, I noticed the bug earlier today, while testing a DVB device.
> As this affects 2 stable releases plus the upcoming Kernel 4.6,
> I decided to just revert it for now, while we don't solve the
> issue.
> 
> Your patch looks good. So, eventually it will be merged on a new
> version of this patch, after we test it properly.

Indeed vb2_core_dqbuf() is called with pb == NULL in file I/O, which was
unfortunately missed until now.

The proposed fix looks good to me.

-- 
Kind regards,

Sakari Ailus
e-mail: sakari.ailus@xxxxxx	XMPP: sailus@xxxxxxxxxxxxxx
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