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| author | Alex Williamson <alex.williamson@redhat.com> | 2017-06-19 09:10:32 -0600 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2017-10-12 15:27:55 +0100 |
| commit | 61968c5c782a816889bdbebace8469867a149dc3 (patch) | |
| tree | ec9fed8c0b5a45226af7073f14e92d8df12dd53e /include | |
| parent | eb1472fe74a9aa9f9de48212976839b473739e95 (diff) | |
vfio: Fix group release deadlock
commit 811642d8d8a82c0cce8dc2debfdaf23c5a144839 upstream.
If vfio_iommu_group_notifier() acquires a group reference and that
reference becomes the last reference to the group, then vfio_group_put
introduces a deadlock code path where we're trying to unregister from
the iommu notifier chain from within a callout of that chain. Use a
work_struct to release this reference asynchronously.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions