Hi Deepa, [auto build test ERROR on input/next] [also build test ERROR on v4.8-rc6 next-20160913] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] [Suggest to use git(>=2.9.0) format-patch --base= (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on] [Check https://git-scm.com/docs/git-format-patch for more information] url: https://github.com/0day-ci/linux/commits/Deepa-Dinamani/Make-input-drivers-y2038-safe/20160913-221810 base: https://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git next config: x86_64-randconfig-s0-09132154 (attached as .config) compiler: gcc-6 (Debian 6.1.1-9) 6.1.1 20160705 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): drivers/input/input-compat.c: In function 'input_event_from_user': >> drivers/input/input-compat.c:24:15: error: invalid application of 'sizeof' to incomplete type 'struct input_event_compat' sizeof(struct input_event_compat))) ^~~~~~ drivers/input/input-compat.c: In function 'input_event_to_user': drivers/input/input-compat.c:55:13: error: invalid application of 'sizeof' to incomplete type 'struct input_event_compat' sizeof(struct input_event_compat))) ^~~~~~ vim +24 drivers/input/input-compat.c 68d77942 Deepa Dinamani 2016-09-13 18 struct raw_input_event *event) 2d56f3a3 Philip Langdale 2008-10-16 19 { 68d77942 Deepa Dinamani 2016-09-13 20 if (in_compat_syscall()) { 68d77942 Deepa Dinamani 2016-09-13 21 struct raw_input_event_compat compat_event; 2d56f3a3 Philip Langdale 2008-10-16 22 2d56f3a3 Philip Langdale 2008-10-16 23 if (copy_from_user(&compat_event, buffer, 2d56f3a3 Philip Langdale 2008-10-16 @24 sizeof(struct input_event_compat))) 2d56f3a3 Philip Langdale 2008-10-16 25 return -EFAULT; 2d56f3a3 Philip Langdale 2008-10-16 26 2d56f3a3 Philip Langdale 2008-10-16 27 event->time.tv_sec = compat_event.time.tv_sec; :::::: The code at line 24 was first introduced by commit :::::: 2d56f3a32c0e62f99c043d2579840f9731fe5855 Input: refactor evdev 32bit compat to be shareable with uinput :::::: TO: Philip Langdale :::::: CC: Dmitry Torokhov --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation