ocfs2: fix shift left operations overflow
authorJoseph Qi <joseph.qi@huawei.com>
Thu, 9 Oct 2014 22:24:56 +0000 (15:24 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 10 Oct 2014 02:25:47 +0000 (22:25 -0400)
commit7fa05c6e46d76378d4403669ba6ea38364f910ac
tree6d90790c72435cd63486ccbce97c6c867e0e7b08
parent190a7721ac865744a59fdf2f291c2a211cab6217
ocfs2: fix shift left operations overflow

ocfs2_inode_info->ip_clusters and ocfs2_dinode->id1.bitmap1.i_total are
defined as type u32, so the shift left operations may overflow if volume
size is large, for example, 2TB and cluster size is 1MB.

Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Reviewed-by: Alex Chen <alex.chen@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/ocfs2/inode.h
fs/ocfs2/move_extents.c