Re: [PATCH] socket: Provide bounce buffer for constant sized put_cmsg()

Hi Kees, I love your patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v4.15 next-20180201] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commi

Re: [PATCH] socket: Provide bounce buffer for constant sized put_cmsg()

Hi Kees, I love your patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v4.15 next-20180201] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Kees-

[PATCH] socket: Provide bounce buffer for constant sized put_cmsg()

Most callers of put_cmsg() use a "sizeof(foo)" for the length argument. Within put_cmsg(), a copy_to_user() call is made with a dynamic size, as a result of the cmsg header calculations. This means that hardened usercopy will examine the copy, even though it was technically a fixed size and should