diff options
| author | Anand Jain <anand.jain@oracle.com> | 2023-07-31 19:16:35 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-09-23 11:10:01 +0200 |
| commit | b9f0572b38c1449e296d22d39d4542d09b610db7 (patch) | |
| tree | 482e13987d7994c367b48f73002b1bad690032dc | |
| parent | cba491ee38e20f0a4878ad0317040eb91766a4a6 (diff) | |
btrfs: compare the correct fsid/metadata_uuid in btrfs_validate_super
[ Upstream commit 6bfe3959b0e7a526f5c64747801a8613f002f05a ]
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.
CC: stable@vger.kernel.org # 5.4+
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Tested-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | fs/btrfs/disk-io.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 6e0fdfd98f23..f0654fe80b34 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2605,13 +2605,11 @@ 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; } |