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Unfortunately, we introduced some big-endian bugs during the last

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merge window.  Fortunately, Cai and Christian noticed before 3.9
 shipped.
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Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 fixes from Ted Ts'o:
 "Unfortunately, we introduced some big-endian bugs during the last
  merge window.  Fortunately, Cai and Christian noticed before 3.9
  shipped."

* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: fix big-endian bugs which could cause fs corruptions
This commit is contained in:
Linus Torvalds 2013-04-03 11:21:13 -07:00
parent cd0e4a9dd4 8cde7ad17e
commit cbfa0e7204
2 changed files with 9 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
fs/ext4/extents.c
View file

@ -2999,20 +2999,23 @@ static int ext4_split_extent_at(handle_t *handle,
if (split_flag & EXT4_EXT_DATA_VALID1) {
err = ext4_ext_zeroout(inode, ex2);
zero_ex.ee_block = ex2->ee_block;
zero_ex.ee_len = ext4_ext_get_actual_len(ex2);
zero_ex.ee_len = cpu_to_le16(
ext4_ext_get_actual_len(ex2));
ext4_ext_store_pblock(&zero_ex,
ext4_ext_pblock(ex2));
} else {
err = ext4_ext_zeroout(inode, ex);
zero_ex.ee_block = ex->ee_block;
zero_ex.ee_len = ext4_ext_get_actual_len(ex);
zero_ex.ee_len = cpu_to_le16(
ext4_ext_get_actual_len(ex));
ext4_ext_store_pblock(&zero_ex,
ext4_ext_pblock(ex));
}
} else {
err = ext4_ext_zeroout(inode, &orig_ex);
zero_ex.ee_block = orig_ex.ee_block;
zero_ex.ee_len = ext4_ext_get_actual_len(&orig_ex);
zero_ex.ee_len = cpu_to_le16(
ext4_ext_get_actual_len(&orig_ex));
ext4_ext_store_pblock(&zero_ex,
ext4_ext_pblock(&orig_ex));
}
@ -3272,7 +3275,7 @@ static int ext4_ext_convert_to_initialized(handle_t *handle,
if (err)
goto out;
zero_ex.ee_block = ex->ee_block;
zero_ex.ee_len = ext4_ext_get_actual_len(ex);
zero_ex.ee_len = cpu_to_le16(ext4_ext_get_actual_len(ex));
ext4_ext_store_pblock(&zero_ex, ext4_ext_pblock(ex));
err = ext4_ext_get_access(handle, inode, path + depth);

4
fs/ext4/indirect.c
View file

@ -1539,9 +1539,9 @@ static int free_hole_blocks(handle_t *handle, struct inode *inode,
blk = *i_data;
if (level > 0) {
ext4_lblk_t first2;
bh = sb_bread(inode->i_sb, blk);
bh = sb_bread(inode->i_sb, le32_to_cpu(blk));
if (!bh) {
EXT4_ERROR_INODE_BLOCK(inode, blk,
EXT4_ERROR_INODE_BLOCK(inode, le32_to_cpu(blk),
"Read failure");
return -EIO;
}