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From: Dan Carpenter <dan.carpenter@oracle.com>
To: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Rob Herring <robh@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>,
	David Airlie <airlied@linux.ie>,
	kernel-janitors@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: [PATCH] drm/gem: Fix a leak in drm_gem_objects_lookup()
Date: Fri, 20 Mar 2020 13:23:34 +0000	[thread overview]
Message-ID: <20200320132334.GC95012@mwanda> (raw)

If the "handles" allocation or the copy_from_user() fails then we leak
"objs".  It's supposed to be freed in panfrost_job_cleanup().

Fixes: c117aa4d8701 ("drm: Add a drm_gem_objects_lookup helper")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 drivers/gpu/drm/drm_gem.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index a9e4a610445a..f28724f2eb69 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -710,6 +710,8 @@ int drm_gem_objects_lookup(struct drm_file *filp, void __user *bo_handles,
 	if (!objs)
 		return -ENOMEM;
 
+	*objs_out = objs;
+
 	handles = kvmalloc_array(count, sizeof(u32), GFP_KERNEL);
 	if (!handles) {
 		ret = -ENOMEM;
@@ -723,8 +725,6 @@ int drm_gem_objects_lookup(struct drm_file *filp, void __user *bo_handles,
 	}
 
 	ret = objects_lookup(filp, handles, count, objs);
-	*objs_out = objs;
-
 out:
 	kvfree(handles);
 	return ret;
-- 
2.25.1

WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Rob Herring <robh@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>,
	David Airlie <airlied@linux.ie>,
	kernel-janitors@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: [PATCH] drm/gem: Fix a leak in drm_gem_objects_lookup()
Date: Fri, 20 Mar 2020 16:23:34 +0300	[thread overview]
Message-ID: <20200320132334.GC95012@mwanda> (raw)

If the "handles" allocation or the copy_from_user() fails then we leak
"objs".  It's supposed to be freed in panfrost_job_cleanup().

Fixes: c117aa4d8701 ("drm: Add a drm_gem_objects_lookup helper")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 drivers/gpu/drm/drm_gem.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index a9e4a610445a..f28724f2eb69 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -710,6 +710,8 @@ int drm_gem_objects_lookup(struct drm_file *filp, void __user *bo_handles,
 	if (!objs)
 		return -ENOMEM;
 
+	*objs_out = objs;
+
 	handles = kvmalloc_array(count, sizeof(u32), GFP_KERNEL);
 	if (!handles) {
 		ret = -ENOMEM;
@@ -723,8 +725,6 @@ int drm_gem_objects_lookup(struct drm_file *filp, void __user *bo_handles,
 	}
 
 	ret = objects_lookup(filp, handles, count, objs);
-	*objs_out = objs;
-
 out:
 	kvfree(handles);
 	return ret;
-- 
2.25.1

_______________________________________________
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             reply	other threads:[~2020-03-20 13:23 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-20 13:23 Dan Carpenter [this message]
2020-03-20 13:23 ` [PATCH] drm/gem: Fix a leak in drm_gem_objects_lookup() Dan Carpenter
2020-03-23 11:13 ` Emil Velikov
2020-03-23 11:13   ` Emil Velikov
2020-03-23 12:13   ` Dan Carpenter
2020-03-23 12:13     ` Dan Carpenter
2020-05-17 20:48     ` Emil Velikov
2020-05-17 20:48       ` Emil Velikov

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