From: Theodore Ts'o <tytso@mit.edu>
To: stable@vger.kernel.org
Cc: Ext4 Developers List <linux-ext4@vger.kernel.org>,
Jan Kara <jack@suse.cz>, Theodore Ts'o <tytso@mit.edu>
Subject: [PATCH 1/4] ext4: fix data offset overflow on 32-bit archs in ext4_inline_data_fiemap()
Date: Tue, 9 Jul 2013 10:39:29 -0400 [thread overview]
Message-ID: <1373380772-16803-1-git-send-email-tytso@mit.edu> (raw)
In-Reply-To: <20130709143855.GF6000@thunk.org>
From: Jan Kara <jack@suse.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@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.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
next prev parent reply other threads:[~2013-07-09 14:39 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-29 12:05 [PATCH 0/4] ext4: Fix overflows in ext4 code Jan Kara
2013-05-29 12:05 ` [PATCH 1/4] ext4: Fix data offset overflow on 32-bit archs in ext4_inline_data_fiemap() Jan Kara
2013-05-29 12:05 ` [PATCH 2/4] ext4: Fix overflows in SEEK_HOLE, SEEK_DATA implementations Jan Kara
2013-05-29 13:51 ` Zheng Liu
2013-05-29 12:05 ` [PATCH 3/4] ext4: Fix data offset overflow in ext4_xattr_fiemap() on 32-bit archs Jan Kara
2013-05-29 12:05 ` [PATCH 4/4] ext4: Fix overflow when counting used blocks on 32-bit architectures Jan Kara
2013-05-31 23:42 ` Theodore Ts'o
2013-07-09 14:14 ` [PATCH 0/4] ext4: Fix overflows in ext4 code Eric Sandeen
2013-07-09 14:38 ` Theodore Ts'o
2013-07-09 14:39 ` Theodore Ts'o [this message]
2013-07-09 14:39 ` [PATCH 2/4] ext4: fix overflows in SEEK_HOLE, SEEK_DATA implementations Theodore Ts'o
2013-07-09 14:39 ` [PATCH 3/4] ext4: fix data offset overflow in ext4_xattr_fiemap() on 32-bit archs Theodore Ts'o
2013-07-09 14:39 ` [PATCH 4/4] ext4: fix overflow when counting used blocks on 32-bit architectures Theodore Ts'o
2013-07-09 15:00 ` [PATCH 0/4] ext4: Fix overflows in ext4 code Eric Sandeen
2013-07-10 15:40 ` Luis Henriques
2013-07-12 13:15 ` Josh Boyer
2013-07-12 14:50 ` Greg KH
2013-07-24 4:46 ` Ben Hutchings
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