Hi reviewers, I suggest to backport a commit to Linux 3.18 stable tree. Reason: KASAN reports a out-of-bound write issue when a large size allocation is made from drivers through user-space. commit: 67a2e213e7e937c41c52ab5bc46bf3f4de469f6e subject: mm: cma: fix incorrect type conversion for size during dma allocation kernel version to apply to: Linux 3.18 thanks, Miles