Patch "btrfs: send: return EOPNOTSUPP on unknown flags" has been added to the 6.6-stable tree

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This is a note to let you know that I've just added the patch titled

    btrfs: send: return EOPNOTSUPP on unknown flags

to the 6.6-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:
     btrfs-send-return-eopnotsupp-on-unknown-flags.patch
and it can be found in the queue-6.6 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From f884a9f9e59206a2d41f265e7e403f080d10b493 Mon Sep 17 00:00:00 2001
From: David Sterba <dsterba@xxxxxxxx>
Date: Wed, 10 Jan 2024 17:48:44 +0100
Subject: btrfs: send: return EOPNOTSUPP on unknown flags

From: David Sterba <dsterba@xxxxxxxx>

commit f884a9f9e59206a2d41f265e7e403f080d10b493 upstream.

When some ioctl flags are checked we return EOPNOTSUPP, like for
BTRFS_SCRUB_SUPPORTED_FLAGS, BTRFS_SUBVOL_CREATE_ARGS_MASK or fallocate
modes. The EINVAL is supposed to be for a supported but invalid
values or combination of options. Fix that when checking send flags so
it's consistent with the rest.

CC: stable@xxxxxxxxxxxxxxx # 4.14+
Link: https://lore.kernel.org/linux-btrfs/CAL3q7H5rryOLzp3EKq8RTbjMHMHeaJubfpsVLF6H4qJnKCUR1w@xxxxxxxxxxxxxx/
Reviewed-by: Filipe Manana <fdmanana@xxxxxxxx>
Signed-off-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 fs/btrfs/send.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -8111,7 +8111,7 @@ long btrfs_ioctl_send(struct inode *inod
 	}
 
 	if (arg->flags & ~BTRFS_SEND_FLAG_MASK) {
-		ret = -EINVAL;
+		ret = -EOPNOTSUPP;
 		goto out;
 	}
 


Patches currently in stable-queue which might be from dsterba@xxxxxxxx are

queue-6.6/btrfs-forbid-creating-subvol-qgroups.patch
queue-6.6/btrfs-do-not-assert-if-the-newly-created-subvolume-already-got-read.patch
queue-6.6/btrfs-don-t-reserve-space-for-checksums-when-writing-to-nocow-files.patch
queue-6.6/btrfs-send-return-eopnotsupp-on-unknown-flags.patch
queue-6.6/btrfs-don-t-drop-extent_map-for-free-space-inode-on-write-error.patch
queue-6.6/btrfs-forbid-deleting-live-subvol-qgroup.patch
queue-6.6/btrfs-do-not-delete-unused-block-group-if-it-may-be-used-soon.patch
queue-6.6/btrfs-add-and-use-helper-to-check-if-block-group-is-used.patch
queue-6.6/btrfs-reject-encoded-write-if-inode-has-nodatasum-flag-set.patch




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