From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Gustavo A. R. Silva" Subject: [PATCH][next] drm/virtio: Use struct_size() helper in kmalloc() Date: Wed, 17 Jun 2020 16:57:07 -0500 Message-ID: <20200617215707.GA16785@embeddedor> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org To: David Airlie , Gerd Hoffmann , Daniel Vetter Cc: dri-devel@lists.freedesktop.org, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, "Gustavo A. R. Silva" List-Id: virtualization@lists.linuxfoundation.org Make use of the struct_size() helper instead of an open-coded version in order to avoid any potential type mistakes. This code was detected with the help of Coccinelle and, audited and fixed manually. Signed-off-by: Gustavo A. R. Silva --- drivers/gpu/drm/virtio/virtgpu_gem.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/virtio/virtgpu_gem.c b/drivers/gpu/drm/virtio/virtgpu_gem.c index 24ffacac99e4..c30c75ee83fc 100644 --- a/drivers/gpu/drm/virtio/virtgpu_gem.c +++ b/drivers/gpu/drm/virtio/virtgpu_gem.c @@ -154,9 +154,8 @@ void virtio_gpu_gem_object_close(struct drm_gem_object *obj, struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents) { struct virtio_gpu_object_array *objs; - size_t size = sizeof(*objs) + sizeof(objs->objs[0]) * nents; - objs = kmalloc(size, GFP_KERNEL); + objs = kmalloc(struct_size(objs, objs, nents), GFP_KERNEL); if (!objs) return NULL; -- 2.27.0