diff options
| author | Chris Mason <clm@fb.com> | 2016-05-17 14:43:19 -0700 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2016-05-17 14:43:19 -0700 |
| commit | c315ef8d9db7f1a0ebd023a395ebdfde1c68057e (patch) | |
| tree | 501e1fc558de9e56b78e457aa928fa255e660486 /drivers/misc/mic | |
| parent | a88336d13c66fc171f336c6332fcb67339894e08 (diff) | |
| parent | 5f9a8a51d8b95505d8de8b7191ae2ed8c504d4af (diff) | |
Merge branch 'for-chris-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/fdmanana/linux into for-linus-4.7
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'drivers/misc/mic')
| -rw-r--r-- | drivers/misc/mic/vop/vop_vringh.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/misc/mic/vop/vop_vringh.c b/drivers/misc/mic/vop/vop_vringh.c index e94c7fb6712a..88e45234d527 100644 --- a/drivers/misc/mic/vop/vop_vringh.c +++ b/drivers/misc/mic/vop/vop_vringh.c @@ -945,6 +945,11 @@ static long vop_ioctl(struct file *f, unsigned int cmd, unsigned long arg) ret = -EFAULT; goto free_ret; } + /* Ensure desc has not changed between the two reads */ + if (memcmp(&dd, dd_config, sizeof(dd))) { + ret = -EINVAL; + goto free_ret; + } mutex_lock(&vdev->vdev_mutex); mutex_lock(&vi->vop_mutex); ret = vop_virtio_add_device(vdev, dd_config); |