This is a note to let you know that I've just added the patch titled
ext3,ext4: don't mess with dir_file->f_pos in htree_dirblock_to_tree()
to the 3.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ext3-ext4-don-t-mess-with-dir_file-f_pos-in-htree_dirblock_to_tree.patch
and it can be found in the queue-3.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 64cb927371cd2ec43758d8a094a003d27bc3d0dc Mon Sep 17 00:00:00 2001
From: Al Viro <[email protected]>
Date: Mon, 1 Jul 2013 08:12:38 -0400
Subject: ext3,ext4: don't mess with dir_file->f_pos in htree_dirblock_to_tree()
From: Al Viro <[email protected]>
commit 64cb927371cd2ec43758d8a094a003d27bc3d0dc upstream.
Both ext3 and ext4 htree_dirblock_to_tree() is just filling the
in-core rbtree for use by call_filldir(). All updates of ->f_pos are
done by the latter; bumping it here (on error) is obviously wrong - we
might very well have it nowhere near the block we'd found an error in.
Signed-off-by: Al Viro <[email protected]>
Signed-off-by: "Theodore Ts'o" <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
fs/ext3/namei.c | 7 ++-----
fs/ext4/namei.c | 7 ++-----
2 files changed, 4 insertions(+), 10 deletions(-)
--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -576,11 +576,8 @@ static int htree_dirblock_to_tree(struct
if (!ext3_check_dir_entry("htree_dirblock_to_tree", dir, de, bh,
(block<<EXT3_BLOCK_SIZE_BITS(dir->i_sb))
+((char *)de - bh->b_data))) {
- /* On error, skip the f_pos to the next block. */
- dir_file->f_pos = (dir_file->f_pos |
- (dir->i_sb->s_blocksize - 1)) + 1;
- brelse (bh);
- return count;
+ /* silently ignore the rest of the block */
+ break;
}
ext3fs_dirhash(de->name, de->name_len, hinfo);
if ((hinfo->hash < start_hash) ||
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -917,11 +917,8 @@ static int htree_dirblock_to_tree(struct
bh->b_data, bh->b_size,
(block<<EXT4_BLOCK_SIZE_BITS(dir->i_sb))
+ ((char *)de - bh->b_data))) {
- /* On error, skip the f_pos to the next block. */
- dir_file->f_pos = (dir_file->f_pos |
- (dir->i_sb->s_blocksize - 1)) + 1;
- brelse(bh);
- return count;
+ /* silently ignore the rest of the block */
+ break;
}
ext4fs_dirhash(de->name, de->name_len, hinfo);
if ((hinfo->hash < start_hash) ||
Patches currently in stable-queue which might be from [email protected]
are
queue-3.9/ext3-ext4-don-t-mess-with-dir_file-f_pos-in-htree_dirblock_to_tree.patch
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