[Intel-xe] [PATCH v2 0/2] drm/xe: Fix unprotected rebind_list accesses

Thomas Hellström thomas.hellstrom at linux.intel.com
Fri May 12 07:52:41 UTC 2023


Each VM has two rebind lists, one protected by the VM resv, the other
one protected essentially by the VM notifier.list_lock. This series
intends to fix two points of illegal access.

Patch 1 fixes an access of VM rebind_lists' link without the VM resv held.
Patch 2 fixes an issue where the VMA may not be removed from the
VM notifier.rebind_list on VMA destruction.

v2:
- Remove a code comment. (Matthew Brost)

Thomas Hellström (2):
  drm/xe: Fix unlocked access of the vma::rebind_link
  drm/xe: Properly remove the vma from the vm::notifer::rebind_list when
    destroyed

 drivers/gpu/drm/xe/xe_vm.c | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

-- 
2.39.2



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