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H A D | disk-io.c | d167aa76 Mon Jul 31 06:16:34 CDT 2023 Anand Jain <anand.jain@oracle.com> btrfs: use the correct superblock to compare fsid in btrfs_validate_super
The function btrfs_validate_super() should verify the fsid in the provided superblock argument. Because, all its callers expect it to do that.
Such as in the following stack:
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::fsid instead, which is not correct. Fix this using the correct fsid 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>
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