On Mon, Oct 8, 2012 at 11:09 AM, Dave Jones <davej@xxxxxxxxxx> wrote: > Last month I sent in 80de7c3138ee9fd86a98696fd2cf7ad89b995d0a to remove > a user triggerable BUG in mempolicy. > > Ben Hutchings pointed out to me that my change introduced a potential leak > of stack contents to userspace, because none of the callers check the return value. > > This patch adds the missing return checking, and also clears the buffer beforehand. I don't think 80de7c3138ee9fd86a98696fd2cf7ad89b995d0a is right fix. we should close a race (or kill remain ref count leak) if we still have. Because of, this patch makes unstable /proc output and might lead to userland confusing. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>