lkml.org 
[lkml]   [2017]   [Mar]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] drm: virtio: fix kmem_cache_alloc error check
On Mon, Mar 13, 2017 at 09:22:26AM +0100, Gerd Hoffmann wrote:
> kmem_cache_alloc returns NULL on error, not ERR_PTR.
>
> Fixes: f5985bf9cadd4e3ed8d5d9a9cbbb2e39cdb81cd9
> Reported-by: Jiri Slaby <jslaby@suse.cz>
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

I guess we should have smatch integrated into 0day to catch these ...

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

> ---
> drivers/gpu/drm/virtio/virtgpu_vq.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
> index 472e349..9eb96fb2 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_vq.c
> +++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
> @@ -97,8 +97,8 @@ void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev)
> struct virtio_gpu_vbuffer *vbuf;
>
> vbuf = kmem_cache_alloc(vgdev->vbufs, GFP_KERNEL);
> - if (IS_ERR(vbuf))
> - return ERR_CAST(vbuf);
> + if (!vbuf)
> + return ERR_PTR(-ENOMEM);
> memset(vbuf, 0, VBUFFER_SIZE);
>
> BUG_ON(size > MAX_INLINE_CMD_SIZE);
> --
> 1.8.3.1
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch

\
 
 \ /
  Last update: 2017-03-13 11:25    [W:0.044 / U:0.424 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site