diff options
| author | Jonathan Gray <jsg@cvs.openbsd.org> | 2022-06-22 22:50:56 +0000 |
|---|---|---|
| committer | Jonathan Gray <jsg@cvs.openbsd.org> | 2022-06-22 22:50:56 +0000 |
| commit | a6c5856adad51df497f6e27fbea3ac847904b751 (patch) | |
| tree | 73d549cdf0788e8d1dd27e11c3fa9fd54a33416e /sys/dev/pci/drm/amd/amdkfd/kfd_svm.c | |
| parent | a20552fa25eef069b6a3cc82f17856da7ad398dd (diff) | |
drm/amdkfd: Use mmget_not_zero in MMU notifier
From Philip Yang
09c5cdbc62d99fc6306a21b24b60eb11a3bd0963 in linux 5.15.y/5.15.49
fa582c6f3684ac0098a9d02ddf0ed52a02b37127 in mainline linux
Diffstat (limited to 'sys/dev/pci/drm/amd/amdkfd/kfd_svm.c')
| -rw-r--r-- | sys/dev/pci/drm/amd/amdkfd/kfd_svm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/dev/pci/drm/amd/amdkfd/kfd_svm.c b/sys/dev/pci/drm/amd/amdkfd/kfd_svm.c index 830809b694d..74e6f613be0 100644 --- a/sys/dev/pci/drm/amd/amdkfd/kfd_svm.c +++ b/sys/dev/pci/drm/amd/amdkfd/kfd_svm.c @@ -2181,6 +2181,8 @@ svm_range_cpu_invalidate_pagetables(struct mmu_interval_notifier *mni, if (range->event == MMU_NOTIFY_RELEASE) return true; + if (!mmget_not_zero(mni->mm)) + return true; start = mni->interval_tree.start; last = mni->interval_tree.last; @@ -2207,6 +2209,7 @@ svm_range_cpu_invalidate_pagetables(struct mmu_interval_notifier *mni, } svm_range_unlock(prange); + mmput(mni->mm); return true; } |