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Message-Id: <1373380772-16803-1-git-send-email-tytso@mit.edu> Date: Tue, 9 Jul 2013 10:39:29 -0400 From: Theodore Ts'o <tytso@....edu> To: stable@...r.kernel.org Cc: Ext4 Developers List <linux-ext4@...r.kernel.org>, Jan Kara <jack@...e.cz>, Theodore Ts'o <tytso@....edu> Subject: [PATCH 1/4] ext4: fix data offset overflow on 32-bit archs in ext4_inline_data_fiemap() From: Jan Kara <jack@...e.cz> 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> --- fs/ext4/inline.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c index 3e2bf87..33331b4 100644 --- a/fs/ext4/inline.c +++ b/fs/ext4/inline.c @@ -1842,7 +1842,7 @@ int ext4_inline_data_fiemap(struct inode *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); -- 1.7.12.rc0.22.gcdd159b -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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