提交 eaf37937 编写于 作者: J Jan Kara 提交者: Theodore Ts'o

ext4: fix data offset overflow on 32-bit archs in ext4_inline_data_fiemap()

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: NJan Kara <jack@suse.cz>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
上级 566370a2
......@@ -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);
......
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