[PATCH v3 0/1] drm/xe: Prevent null pointer access in xe_migrate_copy

[Zhanjun Dong <zhanjun.dong@intel.com>]

xe_migrate_copy designed to copy content of TTM resources. When source resource
is null, it will trigger xe_migrate_copy have null pointer derefrenece. To
avoid this situation, update lacks source flag to true for this case, the flage
will trigger xe_migrate_clear rather than xe_migrate_copy.

Signed-off-by: Zhanjun Dong <zhanjun.dong@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>

Changes from prior revs:
 v3:- Update commit message to include Fixes and issue stack trace
 v2:- Drop changes in xe_migrate_copy
      Update condition expression as suggested

Zhanjun Dong (1):
  drm/xe: Prevent null pointer access in xe_migrate_copy

 drivers/gpu/drm/xe/xe_bo.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

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2.34.1