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| author | Thiemo Nagel <thiemo.nagel@ph.tum.de> | 2009-04-07 18:46:47 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2009-04-07 18:46:47 -0400 |
| commit | f73953c0656f2db9073c585c4df2884a8ecd101e (patch) | |
| tree | 3771470edbc40318c553468265151f4f2e27004e /fs | |
| parent | e0724bf6e4a1f2e678d2b2aab01cae22e17862f0 (diff) | |
| download | linux-f73953c0656f2db9073c585c4df2884a8ecd101e.tar.gz linux-f73953c0656f2db9073c585c4df2884a8ecd101e.tar.bz2 linux-f73953c0656f2db9073c585c4df2884a8ecd101e.zip | |
ext4: Fix big-endian problem in __ext4_check_blockref()
Commit fe2c8191 introduced a regression on big-endian system, because
the checks to make sure block references in non-extent inodes are
valid failed to use le32_to_cpu().
Reported-by: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: Thiemo Nagel <thiemo.nagel@ph.tum.de>
Tested-by: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ext4/inode.c | 8 |
1 files changed, 4 insertions, 4 deletions
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, } static int __ext4_check_blockref(const char *function, struct inode *inode, - unsigned int *p, unsigned int max) { + __le32 *p, unsigned int max) { unsigned int maxblocks = ext4_blocks_count(EXT4_SB(inode->i_sb)->s_es); - unsigned int *bref = p; + __le32 *bref = p; while (bref < p+max) { - if (unlikely(*bref >= maxblocks)) { + if (unlikely(le32_to_cpu(*bref) >= maxblocks)) { ext4_error(inode->i_sb, function, "block reference %u >= max (%u) " "in inode #%lu, offset=%d", - *bref, maxblocks, + le32_to_cpu(*bref), maxblocks, inode->i_ino, (int)(bref-p)); return -EIO; } |