From: Daniel Vetter <daniel@ffwll.ch>
To: Thierry Reding <thierry.reding@gmail.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>, dri-devel@lists.freedesktop.org
Subject: Re: [PATCH 08/13] drm/irq: Check for valid VBLANK before dereference
Date: Thu, 13 Aug 2015 15:05:46 +0200 [thread overview]
Message-ID: <20150813130546.GA17734@phenom.ffwll.local> (raw)
In-Reply-To: <20150813092005.GB21842@ulmo>
On Thu, Aug 13, 2015 at 11:20:05AM +0200, Thierry Reding wrote:
> On Wed, Aug 12, 2015 at 05:40:11PM +0200, Daniel Vetter wrote:
> > On Wed, Aug 12, 2015 at 05:00:30PM +0200, Thierry Reding wrote:
> > > From: Thierry Reding <treding@nvidia.com>
> > >
> > > When accessing the array of per-CRTC VBLANK structures we must always
> > > check that the index into the array is valid before dereferencing to
> > > avoid crashing.
> > >
> > > Signed-off-by: Thierry Reding <treding@nvidia.com>
> >
> > This misses vblank_reset (I guess that function is newer than your
> > patches). Can you please do a follow-up? I merged this one meanwhile.
>
> We only have drm_crtc_vblank_reset(), in which case there's no need to
> check the index because it's obtained directly from a struct drm_crtc *
> and hence will be valid.
Right, I overlooked that.
-Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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next prev parent reply other threads:[~2015-08-13 13:05 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-12 15:00 [PATCH 01/13] drm/gma500: Sanity-check pipe index Thierry Reding
2015-08-12 15:00 ` [PATCH 02/13] drm/irq: Remove negative CRTC index special-case Thierry Reding
2015-08-12 15:28 ` Daniel Vetter
2015-08-12 15:00 ` [PATCH 03/13] drm/bochs: Store correct CRTC index in events Thierry Reding
2015-08-12 15:26 ` Daniel Vetter
2015-08-12 15:00 ` [PATCH 04/13] drm/imx: Make pipe number unsigned Thierry Reding
2015-08-12 15:24 ` Daniel Vetter
2015-08-13 9:05 ` Thierry Reding
2015-08-12 15:00 ` [PATCH 05/13] drm/imx: Store correct CRTC index in events Thierry Reding
2015-08-12 15:00 ` [PATCH 06/13] drm/rockchip: " Thierry Reding
2015-08-12 15:00 ` [PATCH 07/13] drm/sti: " Thierry Reding
2015-08-12 15:26 ` Benjamin Gaignard
2015-08-13 9:06 ` Thierry Reding
2015-08-12 15:00 ` [PATCH 08/13] drm/irq: Check for valid VBLANK before dereference Thierry Reding
2015-08-12 15:40 ` Daniel Vetter
2015-08-13 9:20 ` Thierry Reding
2015-08-13 13:05 ` Daniel Vetter [this message]
2015-08-12 15:00 ` [PATCH 09/13] drm/irq: Make pipe unsigned and name consistent Thierry Reding
2015-08-12 15:32 ` Daniel Vetter
2015-10-30 18:38 ` Ilia Mirkin
2015-08-13 9:38 ` [PATCH] drm/irq: More pipe/crtc consistency cleanups Thierry Reding
2015-08-13 13:02 ` Daniel Vetter
2015-08-12 15:00 ` [PATCH 10/13] drm/irq: Add drm_crtc_vblank_count_and_time() Thierry Reding
2015-08-12 15:35 ` Daniel Vetter
2015-08-13 9:12 ` Thierry Reding
2015-08-13 13:04 ` Daniel Vetter
2015-08-12 15:00 ` [PATCH 11/13] drm/irq: Document return values more consistently Thierry Reding
2015-08-12 15:00 ` [PATCH 12/13] drm/armada: Use drm_crtc_vblank_*() API Thierry Reding
2015-08-14 13:59 ` Russell King - ARM Linux
2015-08-14 14:24 ` Thierry Reding
2015-08-12 15:00 ` [PATCH 13/13] drm/atomic: Use KMS VBLANK API Thierry Reding
2015-08-12 15:41 ` Daniel Vetter
2015-08-12 15:42 ` Daniel Vetter
2015-08-13 10:51 ` [PATCH 01/13] drm/gma500: Sanity-check pipe index Patrik Jakobsson
-- strict thread matches above, loose matches on Subject: below --
2014-12-16 16:53 [PATCH 01/13] drm/irq: Remove negative CRTC index special-case Thierry Reding
2014-12-16 16:53 ` [PATCH 08/13] drm/irq: Check for valid VBLANK before dereference Thierry Reding
2014-12-17 3:11 ` Michel Dänzer
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