From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk0-f199.google.com (mail-qk0-f199.google.com [209.85.220.199]) by kanga.kvack.org (Postfix) with ESMTP id 634956B0502 for ; Sun, 16 Jul 2017 10:23:33 -0400 (EDT) Received: by mail-qk0-f199.google.com with SMTP id c18so63688136qkb.10 for ; Sun, 16 Jul 2017 07:23:33 -0700 (PDT) Received: from smtp108.iad3a.emailsrvr.com (smtp108.iad3a.emailsrvr.com. [173.203.187.108]) by mx.google.com with ESMTPS id c11si1152515qtd.114.2017.07.16.07.23.32 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 16 Jul 2017 07:23:32 -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 15:23:22 +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 , linux-mips@linux-mips.org On 16/07/17 15:14, Ian Abbott wrote: > 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. > Cc'ing linux-mips@linux-mips.org. -- -=( 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