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(parent: df8b4d4) | patch
ext4: fix overflows in SEEK_HOLE, SEEK_DATA implementations
authorJan Kara <jack@suse.cz>
Fri, 31 May 2013 23:37:56 +0000 (19:37 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 21 Jul 2013 00:16:08 +0000 (17:16 -0700)
commit60e415266ce30fe446796e9718a10ee3b881086d
treee2696ed099d5346b201d3bd0e882dfff671c171atree | snapshot
parentdf8b4d47fceb1f64ddea20c233e7bb987cbbce19commit | diff
ext4: fix overflows in SEEK_HOLE, SEEK_DATA implementations

commit e7293fd146846e2a44d29e0477e0860c60fb856b upstream.

ext4_lblk_t is just u32 so multiplying it by blocksize can easily
overflow for files larger than 4 GB. Fix that by properly typing the
block offsets before shifting.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fs/ext4/file.c diff | blob | history
wrapfs-3.9.y