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authorAlexey Kardashevskiy <aik@ozlabs.ru>2013-06-05 08:54:16 -0600
committerAlex Williamson <alex.williamson@redhat.com>2013-06-05 08:54:16 -0600
commit9a6aa279d3d17af73a029fa40654e92f4e75e8bb (patch)
tree25e81385f50cb6f4b2984d30522683d8a049c622
parentd683b96b072dc4680fc74964eca77e6a23d1fa6e (diff)
vfio: fix crash on rmmod
devtmpfs_delete_node() calls devnode() callback with mode==NULL but vfio still tries to write there. The patch fixes this. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
-rw-r--r--drivers/vfio/vfio.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index acb7121a931..6d78736563d 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -1360,7 +1360,7 @@ static const struct file_operations vfio_device_fops = {
*/
static char *vfio_devnode(struct device *dev, umode_t *mode)
{
- if (MINOR(dev->devt) == 0)
+ if (mode && (MINOR(dev->devt) == 0))
*mode = S_IRUGO | S_IWUGO;
return kasprintf(GFP_KERNEL, "vfio/%s", dev_name(dev));