diff options
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/disk-io.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 11171362bd33..263d1471d01a 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3911,6 +3911,25 @@ static int btrfs_check_super_valid(struct btrfs_fs_info *fs_info, } /* + * Obvious sys_chunk_array corruptions, it must hold at least one key + * and one chunk + */ + if (btrfs_super_sys_array_size(sb) > BTRFS_SYSTEM_CHUNK_ARRAY_SIZE) { + printk(KERN_ERR "BTRFS: system chunk array too big %u > %u\n", + btrfs_super_sys_array_size(sb), + BTRFS_SYSTEM_CHUNK_ARRAY_SIZE); + ret = -EINVAL; + } + if (btrfs_super_sys_array_size(sb) < sizeof(struct btrfs_disk_key) + + sizeof(struct btrfs_chunk)) { + printk(KERN_ERR "BTRFS: system chunk array too small %u < %lu\n", + btrfs_super_sys_array_size(sb), + sizeof(struct btrfs_disk_key) + + sizeof(struct btrfs_chunk)); + ret = -EINVAL; + } + + /* * The generation is a global counter, we'll trust it more than the others * but it's still possible that it's the one that's wrong. */ |