Daeho Jeong 51f8d95c89 ext4: fix inode checksum calculation problem if i_extra_size is small
commit 05ac5aa18abd7db341e54df4ae2b4c98ea0e43b7 upstream.

We've fixed the race condition problem in calculating ext4 checksum
value in commit b47820edd163 ("ext4: avoid modifying checksum fields
directly during checksum veficationon"). However, by this change,
when calculating the checksum value of inode whose i_extra_size is
less than 4, we couldn't calculate the checksum value in a proper way.
This problem was found and reported by Nix, Thank you.

Reported-by: Nix <nix@esperi.org.uk>
Signed-off-by: Daeho Jeong <daeho.jeong@samsung.com>
Signed-off-by: Youngjin Gil <youngjin.gil@samsung.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-21 09:30:07 +02:00
..
2015-06-30 19:44:57 -07:00
2015-06-25 17:00:42 -07:00
2017-03-12 06:37:28 +01:00
2016-11-10 16:36:34 +01:00
2015-11-13 20:34:33 -05:00
2015-11-23 21:11:08 -05:00
2016-10-07 15:23:47 +02:00
2015-11-10 12:07:22 -08:00
2015-11-16 23:54:45 -08:00
2015-11-16 23:54:45 -08:00
2015-08-12 15:28:45 -05:00
2016-08-10 11:49:27 +02:00
2016-05-18 17:06:48 -07:00
2016-09-07 08:32:43 +02:00
2015-11-13 20:34:33 -05:00