diff options
| -rw-r--r-- | fs/ext4/block_validity.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ext4/block_validity.c b/fs/ext4/block_validity.c index dc79b75d8f7..4df8621ec31 100644 --- a/fs/ext4/block_validity.c +++ b/fs/ext4/block_validity.c @@ -228,6 +228,7 @@ int ext4_data_block_valid(struct ext4_sb_info *sbi, ext4_fsblk_t start_blk, struct rb_node *n = sbi->system_blks.rb_node; if ((start_blk <= le32_to_cpu(sbi->s_es->s_first_data_block)) || + (start_blk + count < start_blk) || (start_blk + count > ext4_blocks_count(sbi->s_es))) return 0; while (n) { |