On 2020.02.03 15:07:01 +0000, Igor Druzhinin wrote:

When the lock was introduced in 72aabfb862e40 ("drm/i915/gvt: Add mutual lock for ppgtt mm LRU list") one place got lost.

Signed-off-by: Igor Druzhinin igor.druzhinin@citrix.com

drivers/gpu/drm/i915/gvt/gtt.c | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c index 34cb404..4a48280 100644 --- a/drivers/gpu/drm/i915/gvt/gtt.c +++ b/drivers/gpu/drm/i915/gvt/gtt.c @@ -1956,7 +1956,11 @@ void _intel_vgpu_mm_release(struct kref *mm_ref)

if (mm->type == INTEL_GVT_MM_PPGTT) { list_del(&mm->ppgtt_mm.list);

• mutex_lock(&mm->vgpu->gvt->gtt.ppgtt_mm_lock);
  

  list_del(&mm->ppgtt_mm.lru_list);

• mutex_unlock(&mm->vgpu->gvt->gtt.ppgtt_mm_lock);
  

• invalidate_ppgtt_mm(mm); } else { vfree(mm->ggtt_mm.virtual_ggtt);

--

Thanks for the fix!

Reviewed-by: Zhenyu Wang zhenyuw@linux.intel.com