FAILED: patch "[PATCH] btrfs: compare the correct fsid/metadata_uuid in" failed to apply to 5.15-stable tree

The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y
git checkout FETCH_HEAD
git cherry-pick -x 6bfe3959b0e7a526f5c64747801a8613f002f05a
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<[email protected]>' --in-reply-to '2023091602-electable-stench-1002@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^..

Possible dependencies:

6bfe3959b0e7 ("btrfs: compare the correct fsid/metadata_uuid in btrfs_validate_super")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 6bfe3959b0e7a526f5c64747801a8613f002f05a Mon Sep 17 00:00:00 2001
From: Anand Jain <[email protected]>
Date: Mon, 31 Jul 2023 19:16:35 +0800
Subject: [PATCH] btrfs: compare the correct fsid/metadata_uuid in
btrfs_validate_super

The function btrfs_validate_super() should verify the metadata_uuid in the provided superblock argument. Because, all its callers expect it to do that.

Such as in the following stacks:

  write_all_supers()
   sb = fs_info->super_for_commit;
   btrfs_validate_write_super(.., sb)
     btrfs_validate_super(.., sb, ..)

scrub_one_super()

	btrfs_validate_super(.., sb, ..)

And
check_dev_super()

	btrfs_validate_super(.., sb, ..)

However, it currently verifies the fs_info::super_copy::metadata_uuid instead. Fix this using the correct metadata_uuid in the superblock argument.

index 49f405495e34..32ec651c570f 100644
@@ -2391,13 +2391,11 @@ int btrfs_validate_super(struct btrfs_fs_info *fs_info,
 		ret = -EINVAL;
 	}
 
-	if (btrfs_fs_incompat(fs_info, METADATA_UUID) &&
-	    memcmp(fs_info->fs_devices->metadata_uuid,
-		   fs_info->super_copy->metadata_uuid, BTRFS_FSID_SIZE)) {
+	if (memcmp(fs_info->fs_devices->metadata_uuid, btrfs_sb_fsid_ptr(sb),
+		   BTRFS_FSID_SIZE) != 0) {
 		btrfs_err(fs_info,
 "superblock metadata_uuid doesn't match metadata uuid of fs_devices: %pU != %pU",
-			fs_info->super_copy->metadata_uuid,
-			fs_info->fs_devices->metadata_uuid);
+			  btrfs_sb_fsid_ptr(sb), fs_info->fs_devices->metadata_uuid);
 		ret = -EINVAL;
 	}