This is a note to let you know that I've just added the patch titled
md: clean up invalid BUG_ON in md_ioctl
to the 5.4-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:
md-clean-up-invalid-bug_on-in-md_ioctl.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit b25b3bb5ae3d8d2375d622e80b22a07df652d5c7
Author: Li Nan <linan122@xxxxxxxxxx>
Date: Mon Feb 26 11:14:38 2024 +0800
md: clean up invalid BUG_ON in md_ioctl
[ Upstream commit 9dd8702e7cd28ebf076ff838933f29cf671165ec ]
'disk->private_data' is set to mddev in md_alloc() and never set to NULL,
and users need to open mddev before submitting ioctl. So mddev must not
have been freed during ioctl, and there is no need to check mddev here.
Clean up it.
Signed-off-by: Li Nan <linan122@xxxxxxxxxx>
Reviewed-by: Yu Kuai <yukuai3@xxxxxxxxxx>
Signed-off-by: Song Liu <song@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240226031444.3606764-4-linan666@xxxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 61c3e8df1b55b..e5f3010debb85 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -7396,11 +7396,6 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode,
mddev = bdev->bd_disk->private_data;
- if (!mddev) {
- BUG();
- goto out;
- }
-
/* Some actions do not requires the mutex */
switch (cmd) {
case GET_ARRAY_INFO:
