On Wed, Feb 08, 2023 at 07:35:52AM +0100, Christoph Hellwig wrote: > On Tue, Feb 07, 2023 at 10:40:32PM +0800, Ming Lei wrote: > > because disk->root_blkg is freed & set as NULL in del_gendisk(). > > > > by the following script: > > > > modprobe -r scsi_debug > > modprobe scsi_debug dev_size_mb=1024 > > > > mkfs.xfs -f /dev/sdc #suppose sdc is the scsi debug disk > > mount /dev/sdc /mnt > > echo 1 > /sys/block/sdc/device/delete > > sleep 1 > > umount /mnt > > Thank, > > I've sent a fix. Can you wire up your reproducer in blktests? Yeah, it is already sent out: https://lore.kernel.org/linux-block/20230208010235.553252-1-ming.lei@xxxxxxxxxx/T/#u Thanks, Ming
