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Commit 9a6aa279 authored by Alexey Kardashevskiy's avatar Alexey Kardashevskiy Committed by Alex Williamson
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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: default avatarAlexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: default avatarAlex Williamson <alex.williamson@redhat.com>
parent d683b96b

drivers/vfio/vfio.c

+1 −1
Original line number Diff line number Diff line
@@ -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));