This is a note to let you know that I've just added the patch titled
block: ublk: move ublk_chr_class destroying after devices are removed
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
block-ublk-move-ublk_chr_class-destroying-after-devi.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 7b4dcecc4824ebce677162d3c880a2d507554f29
Author: Ming Lei <ming.lei@xxxxxxxxxx>
Date: Thu Jan 26 19:53:46 2023 +0800
block: ublk: move ublk_chr_class destroying after devices are removed
[ Upstream commit 8e4ff684762b6503db45e8906e258faee080c336 ]
The 'ublk_chr_class' is needed when deleting ublk char devices in
ublk_exit(), so move it after devices(idle) are removed.
Fixes the following warning reported by Harris, James R:
[ 859.178950] sysfs group 'power' not found for kobject 'ublkc0'
[ 859.178962] WARNING: CPU: 3 PID: 1109 at fs/sysfs/group.c:278 sysfs_remove_group+0x9c/0xb0
Reported-by: "Harris, James R" <james.r.harris@xxxxxxxxx>
Fixes: 71f28f3136af ("ublk_drv: add io_uring based userspace block driver")
Link: https://lore.kernel.org/linux-block/Y9JlFmSgDl3+zy3N@T590/T/#t
Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
Tested-by: Jim Harris <james.r.harris@xxxxxxxxx>
Link: https://lore.kernel.org/r/20230126115346.263344-1-ming.lei@xxxxxxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c
index 17b677b5d3b2..e54693204630 100644
--- a/drivers/block/ublk_drv.c
+++ b/drivers/block/ublk_drv.c
@@ -2092,13 +2092,12 @@ static void __exit ublk_exit(void)
struct ublk_device *ub;
int id;
- class_destroy(ublk_chr_class);
-
- misc_deregister(&ublk_misc);
-
idr_for_each_entry(&ublk_index_idr, ub, id)
ublk_remove(ub);
+ class_destroy(ublk_chr_class);
+ misc_deregister(&ublk_misc);
+
idr_destroy(&ublk_index_idr);
unregister_chrdev_region(ublk_chr_devt, UBLK_MINORS);
}
