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Date: Thu, 18 Jul 2013 22:21:46 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Jan Kara <jack@...e.cz>, Theodore Tso <tytso@....edu> Subject: [ 30/38] ext4: fix data offset overflow on 32-bit archs in ext4_inline_data_fiemap() 3.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jan Kara <jack@...e.cz> 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@...e.cz> Signed-off-by: Theodore Ts'o <tytso@....edu> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- 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); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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