Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'vfio-v4.11-rc4' of git://github.com/awilliam/linux-vfio
Pull VFIO fix from Alex Williamson:
"Rework sanity check for mdev driver group notifier de-registration
(Alex Williamson)"
* tag 'vfio-v4.11-rc4' of git://github.com/awilliam/linux-vfio:
vfio: Rework group release notifier warning
+5
-3
+5
-3
drivers/vfio/vfio.c
+5
-3
drivers/vfio/vfio.c
···
403
403
struct iommu_group *iommu_group = group->iommu_group;
404
404
405
405
WARN_ON(!list_empty(&group->device_list));
406
+
WARN_ON(group->notifier.head);
406
407
407
408
list_for_each_entry_safe(unbound, tmp,
408
409
&group->unbound_list, unbound_next) {
···
1574
1573
return -EBUSY;
1575
1574
}
1576
1575
1576
+
/* Warn if previous user didn't cleanup and re-init to drop them */
1577
+
if (WARN_ON(group->notifier.head))
1578
+
BLOCKING_INIT_NOTIFIER_HEAD(&group->notifier);
1579
+
1577
1580
filep->private_data = group;
1578
1581
1579
1582
return 0;
···
1588
1583
struct vfio_group *group = filep->private_data;
1589
1584
1590
1585
filep->private_data = NULL;
1591
-
1592
-
/* Any user didn't unregister? */
1593
-
WARN_ON(group->notifier.head);
1594
1586
1595
1587
vfio_group_try_dissolve_container(group);
1596
1588