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(parent: 8405b84) | patch
vhost_vdpa: Return -EFAULT if copy_from_user() fails
authorDan Carpenter <dan.carpenter@oracle.com>
Fri, 23 Oct 2020 12:08:53 +0000 (15:08 +0300)
committerMichael S. Tsirkin <mst@redhat.com>
Fri, 30 Oct 2020 08:02:25 +0000 (04:02 -0400)
commitcde9dcc6dc38521d8062919b0595dea92be3e4ca
tree8c5fbe06554b29562d12c1a5a22b1a55aa4fbc55tree | snapshot
parent8405b8416849bc48eefc9ece150ff7d2be5b189bcommit | diff
vhost_vdpa: Return -EFAULT if copy_from_user() fails

The copy_to/from_user() functions return the number of bytes which we
weren't able to copy but the ioctl should return -EFAULT if they fail.

Fixes: eecc40e9ab2e ("vhost-vdpa: fix backend feature ioctls")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20201023120853.GI282278@mwanda
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Cc: stable@vger.kernel.org
Acked-by: Jason Wang <jasowang@redhat.com>
drivers/vhost/vdpa.c diff | blob | history
Linux Kernel Source Tree.