diff options
| author | Linux Build Service Account <lnxbuild@localhost> | 2018-05-10 01:25:18 -0700 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2018-05-10 01:25:18 -0700 |
| commit | 6e5dae3ae1af25ac48b005ccfb2cf7e033d312ce (patch) | |
| tree | ae877abfc5e691423dd5dbafab2a2eda81760e58 /fs/ext4/ialloc.c | |
| parent | d7521d9bb9408dd4225b9838e23a80ecc41f80fa (diff) | |
| parent | 028ce831e8f14cc94f14929f1a91d198ea2d9b93 (diff) | |
Merge "Merge android-4.4.131 (d5d6526) into msm-4.4"
Diffstat (limited to 'fs/ext4/ialloc.c')
| -rw-r--r-- | fs/ext4/ialloc.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index e10c12f59c58..9fe55b7d4c2c 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -119,6 +119,7 @@ static struct buffer_head * ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group) { struct ext4_group_desc *desc; + struct ext4_sb_info *sbi = EXT4_SB(sb); struct buffer_head *bh = NULL; ext4_fsblk_t bitmap_blk; int err; @@ -128,6 +129,12 @@ ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group) return ERR_PTR(-EFSCORRUPTED); bitmap_blk = ext4_inode_bitmap(sb, desc); + if ((bitmap_blk <= le32_to_cpu(sbi->s_es->s_first_data_block)) || + (bitmap_blk >= ext4_blocks_count(sbi->s_es))) { + ext4_error(sb, "Invalid inode bitmap blk %llu in " + "block_group %u", bitmap_blk, block_group); + return ERR_PTR(-EFSCORRUPTED); + } bh = sb_getblk(sb, bitmap_blk); if (unlikely(!bh)) { ext4_error(sb, "Cannot read inode bitmap - " |