mtd: blkdevs: fix crash related to sysfs attributes. (dba76c03) · Commits · 戴 / test

Remove the attributes group before disk to avoid use after free Signed-off-by:

drivers/mtd/mtd_blkdevs.c

+4 −3

Original line number	Original line	Diff line number	Diff line
	@@ -410,13 +410,14 @@ int del_mtd_blktrans_dev(struct mtd_blktrans_dev *old)
	BUG();		BUG();
	}		}

	/* Stop new requests to arrive */
	del_gendisk(old->disk);

	if (old->disk_attributes)		if (old->disk_attributes)
	sysfs_remove_group(&disk_to_dev(old->disk)->kobj,		sysfs_remove_group(&disk_to_dev(old->disk)->kobj,
	old->disk_attributes);		old->disk_attributes);

			/* Stop new requests to arrive */
			del_gendisk(old->disk);


	/* Stop the thread */		/* Stop the thread */
	kthread_stop(old->thread);		kthread_stop(old->thread);