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2024-05-14 bedbef8ad3e75a304af6361af235302bcc61d06b

 kernel/drivers/block/sunvdc.c
.. .. @@ -984,6 +984,8 @@
984 984  	print_version();
985 985  
986 986  	hp = mdesc_grab();
987 +	if (!hp)
988 +		return -ENODEV;
987 989  
988 990  	err = -ENODEV;
989 991  	if ((vdev->dev_no << PARTITION_SHIFT) & ~(u64)MINORMASK) {

..	..	@@ -984,6 +984,8 @@
984	984	print_version();
985	985
986	986	hp = mdesc_grab();
	987	+ if (!hp)
	988	+ return -ENODEV;
987	989
988	990	err = -ENODEV;
989	991	if ((vdev->dev_no << PARTITION_SHIFT) & ~(u64)MINORMASK) {