linux-kernel - Re: [Intel-gfx] [PATCH] drm/i915: fix itnull.cocci warnings (fwd)

Open Source and information security mailing list archives

Date:	Mon, 18 Jan 2016 21:20:50 +0100 (CET)
From:	Julia Lawall <julia.lawall@...6.fr>
To:	Daniel Vetter <daniel@...ll.ch>
cc:	Julia Lawall <julia.lawall@...6.fr>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	David Airlie <airlied@...ux.ie>,
	intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, kbuild-all@...org,
	Daniel Vetter <daniel.vetter@...el.com>
Subject: Re: [Intel-gfx] [PATCH] drm/i915: fix itnull.cocci warnings (fwd)

On Mon, 18 Jan 2016, Daniel Vetter wrote:

> On Mon, Jan 18, 2016 at 04:49:06PM +0100, Julia Lawall wrote:
> > List_for_each entry binds its first argument to an offset from the list
> > pointer, so this should not be NULL.
> > 
> > Generated by: scripts/coccinelle/iterators/itnull.cocci
> > 
> > Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>
> > ---
> > 
> > Please take the patch only if it's a positive warning. Thanks!
> 
> Against which tree is this? I can't find this anywhere like that ...

I don't know.  It may be against a submitted patch.

In case it turns out to be useful, I forgot:

Signed-off-by: Julia Lawall <julia.lawall@...6.fr>

> -Daniel
> 
> > 
> >  intel_display.c |    2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > --- a/drivers/gpu/drm/i915/intel_display.c
> > +++ b/drivers/gpu/drm/i915/intel_display.c
> > @@ -16498,7 +16498,7 @@ void intel_modeset_preclose(struct drm_d
> >  		struct intel_flip_work *work;
> > 
> >  		list_for_each_entry(work, &crtc->flip_work, head) {
> > -			if (work && work->event &&
> > +			if (work->event &&
> >  			    work->event->base.file_priv == file) {
> >  				kfree(work->event);
> >  				work->event = NULL;
> > _______________________________________________
> > Intel-gfx mailing list
> > Intel-gfx@...ts.freedesktop.org
> > http://lists.freedesktop.org/mailman/listinfo/intel-gfx
> 
> -- 
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch
> 

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