From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-it0-f72.google.com (mail-it0-f72.google.com [209.85.214.72]) by kanga.kvack.org (Postfix) with ESMTP id 1F7206B04F6 for ; Sun, 16 Jul 2017 10:14:16 -0400 (EDT) Received: by mail-it0-f72.google.com with SMTP id i71so153210688itf.2 for ; Sun, 16 Jul 2017 07:14:16 -0700 (PDT) Received: from smtp76.ord1c.emailsrvr.com (smtp76.ord1c.emailsrvr.com. [108.166.43.76]) by mx.google.com with ESMTPS id k70si15784158ioe.187.2017.07.16.07.14.15 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 16 Jul 2017 07:14:15 -0700 (PDT) Subject: Re: include/linux/kernel.h:860:32: error: dereferencing pointer to incomplete type 'struct clock_event_device' From: Ian Abbott References: <201707161158.V5vr9Ak9%fengguang.wu@intel.com> Message-ID: Date: Sun, 16 Jul 2017 15:14:04 +0100 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: kbuild test robot Cc: kbuild-all@01.org, linux-kernel@vger.kernel.org, Arnd Bergmann , Andrew Morton , Linux Memory Management List On 16/07/17 14:50, Ian Abbott wrote: > On 16/07/17 04:24, kbuild test robot wrote: >> tree: >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master >> head: 5771a8c08880cdca3bfb4a3fc6d309d6bba20877 >> commit: c7acec713d14c6ce8a20154f9dfda258d6bcad3b kernel.h: handle >> pointers to arrays better in container_of() >> date: 3 days ago >> config: ia64-allyesconfig (attached as .config) >> compiler: ia64-linux-gcc (GCC) 6.2.0 >> reproduce: >> wget >> https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross >> -O ~/bin/make.cross >> chmod +x ~/bin/make.cross >> git checkout c7acec713d14c6ce8a20154f9dfda258d6bcad3b >> # save the attached .config to linux build tree >> make.cross ARCH=ia64 >> >> All errors (new ones prefixed by >>): >> >> In file included from drivers/clocksource/timer-of.c:25:0: >> drivers/clocksource/timer-of.h:35:28: error: field 'clkevt' has >> incomplete type >> struct clock_event_device clkevt; >> ^~~~~~ >> In file included from include/linux/err.h:4:0, >> from include/linux/clk.h:15, >> from drivers/clocksource/timer-of.c:18: >> drivers/clocksource/timer-of.h: In function 'to_timer_of': >>>> include/linux/kernel.h:860:32: error: dereferencing pointer to >>>> incomplete type 'struct clock_event_device' >> BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ >> ^~~~~~ >> include/linux/compiler.h:517:19: note: in definition of macro >> '__compiletime_assert' >> bool __cond = !(condition); \ >> ^~~~~~~~~ >> include/linux/compiler.h:537:2: note: in expansion of macro >> '_compiletime_assert' >> _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) >> ^~~~~~~~~~~~~~~~~~~ >> include/linux/build_bug.h:46:37: note: in expansion of macro >> 'compiletime_assert' >> #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) >> ^~~~~~~~~~~~~~~~~~ >> include/linux/kernel.h:860:2: note: in expansion of macro >> 'BUILD_BUG_ON_MSG' >> BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ >> ^~~~~~~~~~~~~~~~ >> include/linux/kernel.h:860:20: note: in expansion of macro >> '__same_type' >> BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ >> ^~~~~~~~~~~ >> drivers/clocksource/timer-of.h:44:9: note: in expansion of macro >> 'container_of' >> return container_of(clkevt, struct timer_of, clkevt); >> ^~~~~~~~~~~~ >> -- >> In file included from drivers//clocksource/timer-of.c:25:0: >> drivers//clocksource/timer-of.h:35:28: error: field 'clkevt' has >> incomplete type >> struct clock_event_device clkevt; >> ^~~~~~ >> In file included from include/linux/err.h:4:0, >> from include/linux/clk.h:15, >> from drivers//clocksource/timer-of.c:18: >> drivers//clocksource/timer-of.h: In function 'to_timer_of': >>>> include/linux/kernel.h:860:32: error: dereferencing pointer to >>>> incomplete type 'struct clock_event_device' >> BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ >> ^~~~~~ >> include/linux/compiler.h:517:19: note: in definition of macro >> '__compiletime_assert' >> bool __cond = !(condition); \ >> ^~~~~~~~~ >> include/linux/compiler.h:537:2: note: in expansion of macro >> '_compiletime_assert' >> _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) >> ^~~~~~~~~~~~~~~~~~~ >> include/linux/build_bug.h:46:37: note: in expansion of macro >> 'compiletime_assert' >> #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) >> ^~~~~~~~~~~~~~~~~~ >> include/linux/kernel.h:860:2: note: in expansion of macro >> 'BUILD_BUG_ON_MSG' >> BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ >> ^~~~~~~~~~~~~~~~ >> include/linux/kernel.h:860:20: note: in expansion of macro >> '__same_type' >> BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ >> ^~~~~~~~~~~ >> drivers//clocksource/timer-of.h:44:9: note: in expansion of macro >> 'container_of' >> return container_of(clkevt, struct timer_of, clkevt); >> ^~~~~~~~~~~~ >> >> vim +860 include/linux/kernel.h >> >> 843 >> 844 >> 845 /* >> 846 * swap - swap value of @a and @b >> 847 */ >> 848 #define swap(a, b) \ >> 849 do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } >> while (0) >> 850 >> 851 /** >> 852 * container_of - cast a member of a structure out to the >> containing structure >> 853 * @ptr: the pointer to the member. >> 854 * @type: the type of the container struct this is >> embedded in. >> 855 * @member: the name of the member within the struct. >> 856 * >> 857 */ >> 858 #define container_of(ptr, type, member) ({ \ >> 859 void *__mptr = (void *)(ptr); \ >> > 860 BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type >> *)0)->member) && \ >> 861 !__same_type(*(ptr), void), \ >> 862 "pointer type mismatch in container_of()"); \ >> 863 ((type *)(__mptr - offsetof(type, member))); }) >> 864 >> >> --- >> 0-DAY kernel test infrastructure Open Source Technology >> Center >> https://lists.01.org/pipermail/kbuild-all Intel >> Corporation >> > > struct clock_event_device is only completely defined when > CONFIG_GENERIC_CLOCKEVENTS is defined, which it isn't. But I'm confused > as to why TIMER_OF getting selected by allyesconfig since it depends on > GENERIC_CLOCKEVENTS. > It seems to be due to CLKSRC_PISTACHIO being selected, I guess that should also depend on GENERIC_CLOCKEVENTS. -- -=( Ian Abbott @ MEV Ltd. E-mail: )=- -=( Web: http://www.mev.co.uk/ )=- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org