linux-kernel - [PATCH 5.11 096/306] drm/radeon: also init GEM funcs in radeon_gem_prime_import_sg

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Message-Id: <20210315135510.902710918@linuxfoundation.org>
Date:   Mon, 15 Mar 2021 14:52:39 +0100
From:   gregkh@...uxfoundation.org
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Christian König <christian.koenig@....com>,
        Alex Deucher <alexander.deucher@....com>
Subject: [PATCH 5.11 096/306] drm/radeon: also init GEM funcs in radeon_gem_prime_import_sg_table

From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

From: Christian König <christian.koenig@....com>

commit a25955ba123499d7db520175c6be59c29f9215e3 upstream.

Otherwise we will run into a NULL ptr deref.

Signed-off-by: Christian König <christian.koenig@....com>
Bug: https://bugzilla.kernel.org/show_bug.cgi?id=212137
Reviewed-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Cc: stable@...r.kernel.org # 5.11.x
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/gpu/drm/radeon/radeon.h       |    2 ++
 drivers/gpu/drm/radeon/radeon_gem.c   |    4 ++--
 drivers/gpu/drm/radeon/radeon_prime.c |    2 ++
 3 files changed, 6 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -575,6 +575,8 @@ struct radeon_gem {
 	struct list_head	objects;
 };
 
+extern const struct drm_gem_object_funcs radeon_gem_object_funcs;
+
 int radeon_gem_init(struct radeon_device *rdev);
 void radeon_gem_fini(struct radeon_device *rdev);
 int radeon_gem_object_create(struct radeon_device *rdev, unsigned long size,
--- a/drivers/gpu/drm/radeon/radeon_gem.c
+++ b/drivers/gpu/drm/radeon/radeon_gem.c
@@ -43,7 +43,7 @@ struct sg_table *radeon_gem_prime_get_sg
 int radeon_gem_prime_pin(struct drm_gem_object *obj);
 void radeon_gem_prime_unpin(struct drm_gem_object *obj);
 
-static const struct drm_gem_object_funcs radeon_gem_object_funcs;
+const struct drm_gem_object_funcs radeon_gem_object_funcs;
 
 static void radeon_gem_object_free(struct drm_gem_object *gobj)
 {
@@ -227,7 +227,7 @@ static int radeon_gem_handle_lockup(stru
 	return r;
 }
 
-static const struct drm_gem_object_funcs radeon_gem_object_funcs = {
+const struct drm_gem_object_funcs radeon_gem_object_funcs = {
 	.free = radeon_gem_object_free,
 	.open = radeon_gem_object_open,
 	.close = radeon_gem_object_close,
--- a/drivers/gpu/drm/radeon/radeon_prime.c
+++ b/drivers/gpu/drm/radeon/radeon_prime.c
@@ -56,6 +56,8 @@ struct drm_gem_object *radeon_gem_prime_
 	if (ret)
 		return ERR_PTR(ret);
 
+	bo->tbo.base.funcs = &radeon_gem_object_funcs;
+
 	mutex_lock(&rdev->gem.mutex);
 	list_add_tail(&bo->list, &rdev->gem.objects);
 	mutex_unlock(&rdev->gem.mutex);