* [PATCH] drm/gma500: fix memory leak on edid
@ 2017-03-20 17:56 ` Colin King
0 siblings, 0 replies; 5+ messages in thread
From: Colin King @ 2017-03-20 17:56 UTC (permalink / raw)
To: Patrik Jakobsson, David Airlie, dri-devel; +Cc: kernel-janitors, linux-kernel
From: Colin Ian King <colin.king@canonical.com>
edid is allocated on the call to psb_intel_sdvo_get_edid but not
kfree'd at all, causing a memory leak. Fix this by kfree'ing
the edid. (This may be null, but kfree can handle null frees).
Detected by CoverityScan, CID#1090730 ("Resource Leak")
Fixes: 5736995b473b ("gma500: Replace SDVO code with slightly modified version from i915")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
drivers/gpu/drm/gma500/psb_intel_sdvo.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/gma500/psb_intel_sdvo.c b/drivers/gpu/drm/gma500/psb_intel_sdvo.c
index e787d376ba67..f38e6ad1ab9b 100644
--- a/drivers/gpu/drm/gma500/psb_intel_sdvo.c
+++ b/drivers/gpu/drm/gma500/psb_intel_sdvo.c
@@ -1650,6 +1650,7 @@ static bool psb_intel_sdvo_detect_hdmi_audio(struct drm_connector *connector)
edid = psb_intel_sdvo_get_edid(connector);
if (edid != NULL && edid->input & DRM_EDID_INPUT_DIGITAL)
has_audio = drm_detect_monitor_audio(edid);
+ kfree(edid);
return has_audio;
}
--
2.11.0
^ permalink raw reply related [flat|nested] 5+ messages in thread* [PATCH] drm/gma500: fix memory leak on edid
@ 2017-03-20 17:56 ` Colin King
0 siblings, 0 replies; 5+ messages in thread
From: Colin King @ 2017-03-20 17:56 UTC (permalink / raw)
To: Patrik Jakobsson, David Airlie, dri-devel; +Cc: kernel-janitors, linux-kernel
From: Colin Ian King <colin.king@canonical.com>
edid is allocated on the call to psb_intel_sdvo_get_edid but not
kfree'd at all, causing a memory leak. Fix this by kfree'ing
the edid. (This may be null, but kfree can handle null frees).
Detected by CoverityScan, CID#1090730 ("Resource Leak")
Fixes: 5736995b473b ("gma500: Replace SDVO code with slightly modified version from i915")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
drivers/gpu/drm/gma500/psb_intel_sdvo.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/gma500/psb_intel_sdvo.c b/drivers/gpu/drm/gma500/psb_intel_sdvo.c
index e787d376ba67..f38e6ad1ab9b 100644
--- a/drivers/gpu/drm/gma500/psb_intel_sdvo.c
+++ b/drivers/gpu/drm/gma500/psb_intel_sdvo.c
@@ -1650,6 +1650,7 @@ static bool psb_intel_sdvo_detect_hdmi_audio(struct drm_connector *connector)
edid = psb_intel_sdvo_get_edid(connector);
if (edid != NULL && edid->input & DRM_EDID_INPUT_DIGITAL)
has_audio = drm_detect_monitor_audio(edid);
+ kfree(edid);
return has_audio;
}
--
2.11.0
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https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply related [flat|nested] 5+ messages in thread* Re: [PATCH] drm/gma500: fix memory leak on edid
2017-03-20 17:56 ` Colin King
(?)
@ 2017-03-20 18:30 ` walter harms
-1 siblings, 0 replies; 5+ messages in thread
From: walter harms @ 2017-03-20 18:30 UTC (permalink / raw)
To: Colin King
Cc: Patrik Jakobsson, David Airlie, dri-devel, kernel-janitors, linux-kernel
Am 20.03.2017 18:56, schrieb Colin King:
> From: Colin Ian King <colin.king@canonical.com>
>
> edid is allocated on the call to psb_intel_sdvo_get_edid but not
> kfree'd at all, causing a memory leak. Fix this by kfree'ing
> the edid. (This may be null, but kfree can handle null frees).
>
> Detected by CoverityScan, CID#1090730 ("Resource Leak")
>
> Fixes: 5736995b473b ("gma500: Replace SDVO code with slightly modified version from i915")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
> drivers/gpu/drm/gma500/psb_intel_sdvo.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/gma500/psb_intel_sdvo.c b/drivers/gpu/drm/gma500/psb_intel_sdvo.c
> index e787d376ba67..f38e6ad1ab9b 100644
> --- a/drivers/gpu/drm/gma500/psb_intel_sdvo.c
> +++ b/drivers/gpu/drm/gma500/psb_intel_sdvo.c
> @@ -1650,6 +1650,7 @@ static bool psb_intel_sdvo_detect_hdmi_audio(struct drm_connector *connector)
> edid = psb_intel_sdvo_get_edid(connector);
> if (edid != NULL && edid->input & DRM_EDID_INPUT_DIGITAL)
is the check here needed at all ?
drm_detect_monitor_audio--> drm_find_cea_extension -->drm_find_edid_extension (will check for NULL)
I missed DRM_EDID_INPUT_DIGITAL some where ? NTL i would expected drm_detect_monitor_audio to hanle it savely.
re,
wh
> has_audio = drm_detect_monitor_audio(edid);
> + kfree(edid);
>
> return has_audio;
> }
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH] drm/gma500: fix memory leak on edid
@ 2017-03-20 18:30 ` walter harms
0 siblings, 0 replies; 5+ messages in thread
From: walter harms @ 2017-03-20 18:30 UTC (permalink / raw)
To: Colin King; +Cc: kernel-janitors, dri-devel, linux-kernel
Am 20.03.2017 18:56, schrieb Colin King:
> From: Colin Ian King <colin.king@canonical.com>
>
> edid is allocated on the call to psb_intel_sdvo_get_edid but not
> kfree'd at all, causing a memory leak. Fix this by kfree'ing
> the edid. (This may be null, but kfree can handle null frees).
>
> Detected by CoverityScan, CID#1090730 ("Resource Leak")
>
> Fixes: 5736995b473b ("gma500: Replace SDVO code with slightly modified version from i915")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
> drivers/gpu/drm/gma500/psb_intel_sdvo.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/gma500/psb_intel_sdvo.c b/drivers/gpu/drm/gma500/psb_intel_sdvo.c
> index e787d376ba67..f38e6ad1ab9b 100644
> --- a/drivers/gpu/drm/gma500/psb_intel_sdvo.c
> +++ b/drivers/gpu/drm/gma500/psb_intel_sdvo.c
> @@ -1650,6 +1650,7 @@ static bool psb_intel_sdvo_detect_hdmi_audio(struct drm_connector *connector)
> edid = psb_intel_sdvo_get_edid(connector);
> if (edid != NULL && edid->input & DRM_EDID_INPUT_DIGITAL)
is the check here needed at all ?
drm_detect_monitor_audio--> drm_find_cea_extension -->drm_find_edid_extension (will check for NULL)
I missed DRM_EDID_INPUT_DIGITAL some where ? NTL i would expected drm_detect_monitor_audio to hanle it savely.
re,
wh
> has_audio = drm_detect_monitor_audio(edid);
> + kfree(edid);
>
> return has_audio;
> }
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH] drm/gma500: fix memory leak on edid
@ 2017-03-20 18:30 ` walter harms
0 siblings, 0 replies; 5+ messages in thread
From: walter harms @ 2017-03-20 18:30 UTC (permalink / raw)
To: Colin King; +Cc: kernel-janitors, dri-devel, linux-kernel
Am 20.03.2017 18:56, schrieb Colin King:
> From: Colin Ian King <colin.king@canonical.com>
>
> edid is allocated on the call to psb_intel_sdvo_get_edid but not
> kfree'd at all, causing a memory leak. Fix this by kfree'ing
> the edid. (This may be null, but kfree can handle null frees).
>
> Detected by CoverityScan, CID#1090730 ("Resource Leak")
>
> Fixes: 5736995b473b ("gma500: Replace SDVO code with slightly modified version from i915")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
> drivers/gpu/drm/gma500/psb_intel_sdvo.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/gma500/psb_intel_sdvo.c b/drivers/gpu/drm/gma500/psb_intel_sdvo.c
> index e787d376ba67..f38e6ad1ab9b 100644
> --- a/drivers/gpu/drm/gma500/psb_intel_sdvo.c
> +++ b/drivers/gpu/drm/gma500/psb_intel_sdvo.c
> @@ -1650,6 +1650,7 @@ static bool psb_intel_sdvo_detect_hdmi_audio(struct drm_connector *connector)
> edid = psb_intel_sdvo_get_edid(connector);
> if (edid != NULL && edid->input & DRM_EDID_INPUT_DIGITAL)
is the check here needed at all ?
drm_detect_monitor_audio--> drm_find_cea_extension -->drm_find_edid_extension (will check for NULL)
I missed DRM_EDID_INPUT_DIGITAL some where ? NTL i would expected drm_detect_monitor_audio to hanle it savely.
re,
wh
> has_audio = drm_detect_monitor_audio(edid);
> + kfree(edid);
>
> return has_audio;
> }
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2017-03-20 18:30 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2017-03-20 17:56 [PATCH] drm/gma500: fix memory leak on edid Colin King
2017-03-20 17:56 ` Colin King
2017-03-20 18:30 ` walter harms
2017-03-20 18:30 ` walter harms
2017-03-20 18:30 ` walter harms
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