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-rw-r--r--fs/ext4/extents.c2
-rw-r--r--fs/ext4/inode.c8
-rw-r--r--fs/ext4/super.c9
3 files changed, 14 insertions, 5 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index ac77d8b8251d..6132353dcf62 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -342,7 +342,7 @@ static int ext4_valid_extent_idx(struct inode *inode,
342 ext4_fsblk_t block = idx_pblock(ext_idx); 342 ext4_fsblk_t block = idx_pblock(ext_idx);
343 struct ext4_super_block *es = EXT4_SB(inode->i_sb)->s_es; 343 struct ext4_super_block *es = EXT4_SB(inode->i_sb)->s_es;
344 if (unlikely(block < le32_to_cpu(es->s_first_data_block) || 344 if (unlikely(block < le32_to_cpu(es->s_first_data_block) ||
345 (block > ext4_blocks_count(es)))) 345 (block >= ext4_blocks_count(es))))
346 return 0; 346 return 0;
347 else 347 else
348 return 1; 348 return 1;
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index a2e7952bc5f9..c6bd6ced3bb7 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -372,16 +372,16 @@ static int ext4_block_to_path(struct inode *inode,
372} 372}
373 373
374static int __ext4_check_blockref(const char *function, struct inode *inode, 374static int __ext4_check_blockref(const char *function, struct inode *inode,
375 unsigned int *p, unsigned int max) { 375 __le32 *p, unsigned int max) {
376 376
377 unsigned int maxblocks = ext4_blocks_count(EXT4_SB(inode->i_sb)->s_es); 377 unsigned int maxblocks = ext4_blocks_count(EXT4_SB(inode->i_sb)->s_es);
378 unsigned int *bref = p; 378 __le32 *bref = p;
379 while (bref < p+max) { 379 while (bref < p+max) {
380 if (unlikely(*bref >= maxblocks)) { 380 if (unlikely(le32_to_cpu(*bref) >= maxblocks)) {
381 ext4_error(inode->i_sb, function, 381 ext4_error(inode->i_sb, function,
382 "block reference %u >= max (%u) " 382 "block reference %u >= max (%u) "
383 "in inode #%lu, offset=%d", 383 "in inode #%lu, offset=%d",
384 *bref, maxblocks, 384 le32_to_cpu(*bref), maxblocks,
385 inode->i_ino, (int)(bref-p)); 385 inode->i_ino, (int)(bref-p));
386 return -EIO; 386 return -EIO;
387 } 387 }
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 9987bba99db3..2958f4e6f222 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2508,6 +2508,15 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
2508 if (EXT4_BLOCKS_PER_GROUP(sb) == 0) 2508 if (EXT4_BLOCKS_PER_GROUP(sb) == 0)
2509 goto cantfind_ext4; 2509 goto cantfind_ext4;
2510 2510
2511 /* check blocks count against device size */
2512 blocks_count = sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits;
2513 if (blocks_count && ext4_blocks_count(es) > blocks_count) {
2514 printk(KERN_WARNING "EXT4-fs: bad geometry: block count %llu "
2515 "exceeds size of device (%llu blocks)\n",
2516 ext4_blocks_count(es), blocks_count);
2517 goto failed_mount;
2518 }
2519
2511 /* 2520 /*
2512 * It makes no sense for the first data block to be beyond the end 2521 * It makes no sense for the first data block to be beyond the end
2513 * of the filesystem. 2522 * of the filesystem.