[Intel-xe] [PATCH] drm/xe: Prevent return with locked vm

Pallavi Mishra pallavi.mishra at intel.com
Tue Aug 29 18:13:35 UTC 2023


Reorder vm_id check after the one for VISIBLE_VRAM. This should
prevent returning with locked vm in error scenario.

Signed-off-by: Pallavi Mishra <pallavi.mishra at intel.com>
---
 drivers/gpu/drm/xe/xe_bo.c | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_bo.c b/drivers/gpu/drm/xe/xe_bo.c
index 1ab682d61e3c..6a8a41dafe88 100644
--- a/drivers/gpu/drm/xe/xe_bo.c
+++ b/drivers/gpu/drm/xe/xe_bo.c
@@ -1785,17 +1785,6 @@ int xe_gem_create_ioctl(struct drm_device *dev, void *data,
 	if (XE_IOCTL_DBG(xe, args->size & ~PAGE_MASK))
 		return -EINVAL;
 
-	if (args->vm_id) {
-		vm = xe_vm_lookup(xef, args->vm_id);
-		if (XE_IOCTL_DBG(xe, !vm))
-			return -ENOENT;
-		err = xe_vm_lock(vm, &ww, 0, true);
-		if (err) {
-			xe_vm_put(vm);
-			return err;
-		}
-	}
-
 	if (args->flags & XE_GEM_CREATE_FLAG_DEFER_BACKING)
 		bo_flags |= XE_BO_DEFER_BACKING;
 
@@ -1811,6 +1800,17 @@ int xe_gem_create_ioctl(struct drm_device *dev, void *data,
 		bo_flags |= XE_BO_NEEDS_CPU_ACCESS;
 	}
 
+	if (args->vm_id) {
+		vm = xe_vm_lookup(xef, args->vm_id);
+		if (XE_IOCTL_DBG(xe, !vm))
+			return -ENOENT;
+		err = xe_vm_lock(vm, &ww, 0, true);
+		if (err) {
+			xe_vm_put(vm);
+			return err;
+		}
+	}
+
 	bo = xe_bo_create(xe, NULL, vm, args->size, ttm_bo_type_device,
 			  bo_flags);
 	if (IS_ERR(bo)) {
-- 
2.25.1



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