* [PATCH] drm: i915: fix a possible refcount leak in intel_dp_add_mst_connector()
@ 2022-05-16 7:19 Hangyu Hua
2022-06-23 2:18 ` Hangyu Hua
2022-06-23 13:44 ` Souza, Jose
0 siblings, 2 replies; 3+ messages in thread
From: Hangyu Hua @ 2022-05-16 7:19 UTC (permalink / raw)
To: jani.nikula, joonas.lahtinen, rodrigo.vivi, tvrtko.ursulin,
airlied, daniel, ville.syrjala, jose.souza, Bhawanpreet.Lakha,
matthew.d.roper, heying24, anshuman.gupta, james.ausmus
Cc: intel-gfx, dri-devel, linux-kernel, Hangyu Hua
If drm_connector_init fails, intel_connector_free will be called to take
care of proper free. So it is necessary to drop the refcount of port
before intel_connector_free.
Fixes: 091a4f91942a ("drm/i915: Handle drm-layer errors in intel_dp_add_mst_connector")
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
---
drivers/gpu/drm/i915/display/intel_dp_mst.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index e30e698aa684..f7d46ea3afb9 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -841,6 +841,7 @@ static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topolo
ret = drm_connector_init(dev, connector, &intel_dp_mst_connector_funcs,
DRM_MODE_CONNECTOR_DisplayPort);
if (ret) {
+ drm_dp_mst_put_port_malloc(port);
intel_connector_free(intel_connector);
return NULL;
}
--
2.25.1
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] drm: i915: fix a possible refcount leak in intel_dp_add_mst_connector()
2022-05-16 7:19 [PATCH] drm: i915: fix a possible refcount leak in intel_dp_add_mst_connector() Hangyu Hua
@ 2022-06-23 2:18 ` Hangyu Hua
2022-06-23 13:44 ` Souza, Jose
1 sibling, 0 replies; 3+ messages in thread
From: Hangyu Hua @ 2022-06-23 2:18 UTC (permalink / raw)
To: jani.nikula, joonas.lahtinen, rodrigo.vivi, tvrtko.ursulin,
airlied, daniel, ville.syrjala, jose.souza, Bhawanpreet.Lakha,
matthew.d.roper, heying24, anshuman.gupta, james.ausmus
Cc: intel-gfx, dri-devel, linux-kernel
On 2022/5/16 15:19, Hangyu Hua wrote:
> If drm_connector_init fails, intel_connector_free will be called to take
> care of proper free. So it is necessary to drop the refcount of port
> before intel_connector_free.
>
> Fixes: 091a4f91942a ("drm/i915: Handle drm-layer errors in intel_dp_add_mst_connector")
> Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
> ---
> drivers/gpu/drm/i915/display/intel_dp_mst.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> index e30e698aa684..f7d46ea3afb9 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> @@ -841,6 +841,7 @@ static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topolo
> ret = drm_connector_init(dev, connector, &intel_dp_mst_connector_funcs,
> DRM_MODE_CONNECTOR_DisplayPort);
> if (ret) {
> + drm_dp_mst_put_port_malloc(port);
> intel_connector_free(intel_connector);
> return NULL;
> }
Gentel ping.
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] drm: i915: fix a possible refcount leak in intel_dp_add_mst_connector()
2022-05-16 7:19 [PATCH] drm: i915: fix a possible refcount leak in intel_dp_add_mst_connector() Hangyu Hua
2022-06-23 2:18 ` Hangyu Hua
@ 2022-06-23 13:44 ` Souza, Jose
1 sibling, 0 replies; 3+ messages in thread
From: Souza, Jose @ 2022-06-23 13:44 UTC (permalink / raw)
To: hbh25y; +Cc: dri-devel, intel-gfx, linux-kernel
On Mon, 2022-05-16 at 15:19 +0800, Hangyu Hua wrote:
> If drm_connector_init fails, intel_connector_free will be called to take
> care of proper free. So it is necessary to drop the refcount of port
> before intel_connector_free.
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
>
> Fixes: 091a4f91942a ("drm/i915: Handle drm-layer errors in intel_dp_add_mst_connector")
> Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
> ---
> drivers/gpu/drm/i915/display/intel_dp_mst.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> index e30e698aa684..f7d46ea3afb9 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
> @@ -841,6 +841,7 @@ static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topolo
> ret = drm_connector_init(dev, connector, &intel_dp_mst_connector_funcs,
> DRM_MODE_CONNECTOR_DisplayPort);
> if (ret) {
> + drm_dp_mst_put_port_malloc(port);
> intel_connector_free(intel_connector);
> return NULL;
> }
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-06-23 13:44 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2022-05-16 7:19 [PATCH] drm: i915: fix a possible refcount leak in intel_dp_add_mst_connector() Hangyu Hua
2022-06-23 2:18 ` Hangyu Hua
2022-06-23 13:44 ` Souza, Jose
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