This is a note to let you know that I've just added the patch titled
ext4: fix data offset overflow on 32-bit archs in ext4_inline_data_fiemap()
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:
ext4-fix-data-offset-overflow-on-32-bit-archs-in-ext4_inline_data_fiemap.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 <stable@xxxxxxxxxxxxxxx> know about it.
>From eaf3793728d07d995f1e74250b2d0005f7ae98b5 Mon Sep 17 00:00:00 2001
From: Jan Kara <jack@xxxxxxx>
Date: Fri, 31 May 2013 19:33:42 -0400
Subject: ext4: fix data offset overflow on 32-bit archs in ext4_inline_data_fiemap()
From: Jan Kara <jack@xxxxxxx>
commit eaf3793728d07d995f1e74250b2d0005f7ae98b5 upstream.
On 32-bit archs when sector_t is defined as 32-bit the logic computing
data offset in ext4_inline_data_fiemap(). Fix that by properly typing
the shifted value.
Signed-off-by: Jan Kara <jack@xxxxxxx>
Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/ext4/inline.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/ext4/inline.c
+++ b/fs/ext4/inline.c
@@ -1702,7 +1702,7 @@ int ext4_inline_data_fiemap(struct inode
if (error)
goto out;
- physical = iloc.bh->b_blocknr << inode->i_sb->s_blocksize_bits;
+ physical = (__u64)iloc.bh->b_blocknr << inode->i_sb->s_blocksize_bits;
physical += (char *)ext4_raw_inode(&iloc) - iloc.bh->b_data;
physical += offsetof(struct ext4_inode, i_block);
length = i_size_read(inode);
Patches currently in stable-queue which might be from jack@xxxxxxx are
queue-3.9/ext4-fix-corruption-when-online-resizing-a-fs-with-1k-block-size.patch
queue-3.9/ext4-fix-data-offset-overflow-in-ext4_xattr_fiemap-on-32-bit-archs.patch
queue-3.9/ext4-fix-overflow-when-counting-used-blocks-on-32-bit-architectures.patch
queue-3.9/ext4-fix-overflows-in-seek_hole-seek_data-implementations.patch
queue-3.9/ext4-fix-data-offset-overflow-on-32-bit-archs-in-ext4_inline_data_fiemap.patch
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