tree 733157a7c6ad606799fd2692f882da14aae2fd0b
parent 48399c0b0e6172888a2e2e36df1595ab1e049ba8
author Li Wang <liwang@nudt.edu.cn> 1326937476 +0800
committer Tyler Hicks <tyhicks@canonical.com> 1327524220 -0600

eCryptfs: Infinite loop due to overflow in ecryptfs_write()

ecryptfs_write() can enter an infinite loop when truncating a file to a
size larger than 4G. This only happens on architectures where size_t is
represented by 32 bits.

This was caused by a size_t overflow due to it incorrectly being used to
store the result of a calculation which uses potentially large values of
type loff_t.

[tyhicks@canonical.com: rewrite subject and commit message]
Signed-off-by: Li Wang <liwang@nudt.edu.cn>
Signed-off-by: Yunchuan Wen <wenyunchuan@kylinos.com.cn>
Reviewed-by: Cong Wang <xiyou.wangcong@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>