* [PATCH libdrm] drm/atomic: Refuse to add invalid objects to requests
@ 2018-03-07 12:42 Daniel Stone
2018-03-07 16:42 ` Daniel Vetter
0 siblings, 1 reply; 3+ messages in thread
From: Daniel Stone @ 2018-03-07 12:42 UTC (permalink / raw)
To: dri-devel
Object and property IDs cannot be zero. Prevent them from being added to
the request stream at all, rather than breaking at commit time.
Signed-off-by: Daniel Stone <daniels@collabora.com>
---
xf86drmMode.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/xf86drmMode.c b/xf86drmMode.c
index 15957ffc..bd59ef25 100644
--- a/xf86drmMode.c
+++ b/xf86drmMode.c
@@ -1313,6 +1313,9 @@ int drmModeAtomicAddProperty(drmModeAtomicReqPtr req,
if (!req)
return -EINVAL;
+ if (object_id == 0 || property_id == 0)
+ return -EINVAL;
+
if (req->cursor >= req->size_items) {
drmModeAtomicReqItemPtr new;
--
2.14.3
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^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH libdrm] drm/atomic: Refuse to add invalid objects to requests
2018-03-07 12:42 [PATCH libdrm] drm/atomic: Refuse to add invalid objects to requests Daniel Stone
@ 2018-03-07 16:42 ` Daniel Vetter
2018-03-07 17:20 ` Daniel Stone
0 siblings, 1 reply; 3+ messages in thread
From: Daniel Vetter @ 2018-03-07 16:42 UTC (permalink / raw)
To: Daniel Stone; +Cc: dri-devel
On Wed, Mar 07, 2018 at 12:42:15PM +0000, Daniel Stone wrote:
> Object and property IDs cannot be zero. Prevent them from being added to
> the request stream at all, rather than breaking at commit time.
>
> Signed-off-by: Daniel Stone <daniels@collabora.com>
> ---
> xf86drmMode.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/xf86drmMode.c b/xf86drmMode.c
> index 15957ffc..bd59ef25 100644
> --- a/xf86drmMode.c
> +++ b/xf86drmMode.c
> @@ -1313,6 +1313,9 @@ int drmModeAtomicAddProperty(drmModeAtomicReqPtr req,
> if (!req)
> return -EINVAL;
>
> + if (object_id == 0 || property_id == 0)
> + return -EINVAL;
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
... and gives us a perfect spot to gdb into a backtrace and figure out wtf
is going on with drm_hwc :-)
-Daniel
> +
> if (req->cursor >= req->size_items) {
> drmModeAtomicReqItemPtr new;
>
> --
> 2.14.3
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH libdrm] drm/atomic: Refuse to add invalid objects to requests
2018-03-07 16:42 ` Daniel Vetter
@ 2018-03-07 17:20 ` Daniel Stone
0 siblings, 0 replies; 3+ messages in thread
From: Daniel Stone @ 2018-03-07 17:20 UTC (permalink / raw)
To: Daniel Vetter; +Cc: dri-devel
On 7 March 2018 at 16:42, Daniel Vetter <daniel@ffwll.ch> wrote:
> On Wed, Mar 07, 2018 at 12:42:15PM +0000, Daniel Stone wrote:
>> Object and property IDs cannot be zero. Prevent them from being added to
>> the request stream at all, rather than breaking at commit time.
>
> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
>
> ... and gives us a perfect spot to gdb into a backtrace and figure out wtf
> is going on with drm_hwc :-)
Heh, and pushed now. Thanks Daniel!
Cheers,
Daniel
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^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2018-03-07 17:20 UTC | newest]
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2018-03-07 12:42 [PATCH libdrm] drm/atomic: Refuse to add invalid objects to requests Daniel Stone
2018-03-07 16:42 ` Daniel Vetter
2018-03-07 17:20 ` Daniel Stone
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