Hi Alex, [auto build test results on v4.3-rc3 -- if it's inappropriate base, please ignore] config: mips-allyesconfig (attached as .config) reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 0253e397c40cca438922d8ee26cf716a29b1cd77 # save the attached .config to linux build tree make.cross ARCH=mips All error/warnings (new ones prefixed by >>): In file included from include/linux/srcu.h:34:0, from include/linux/notifier.h:15, from arch/mips/include/asm/uprobes.h:9, from include/linux/uprobes.h:61, from include/linux/mm_types.h:13, from arch/mips/include/asm/vdso.h:14, from arch/mips/vdso/vdso.h:25, from arch/mips/vdso/gettimeofday.c:11: include/linux/workqueue.h: In function 'work_static': >> include/linux/workqueue.h:186:2: error: dereferencing type-punned pointer will break strict-aliasing rules [-Werror=strict-aliasing] return *work_data_bits(work) & WORK_STRUCT_STATIC; ^ cc1: all warnings being treated as errors vim +186 include/linux/workqueue.h dd6414b5 Phil Carmody 2010-10-20 170 65f27f38 David Howells 2006-11-22 171 #define DECLARE_WORK(n, f) \ 65f27f38 David Howells 2006-11-22 172 struct work_struct n = __WORK_INITIALIZER(n, f) 65f27f38 David Howells 2006-11-22 173 65f27f38 David Howells 2006-11-22 174 #define DECLARE_DELAYED_WORK(n, f) \ f991b318 Tejun Heo 2012-08-21 175 struct delayed_work n = __DELAYED_WORK_INITIALIZER(n, f, 0) 65f27f38 David Howells 2006-11-22 176 203b42f7 Tejun Heo 2012-08-21 177 #define DECLARE_DEFERRABLE_WORK(n, f) \ f991b318 Tejun Heo 2012-08-21 178 struct delayed_work n = __DELAYED_WORK_INITIALIZER(n, f, TIMER_DEFERRABLE) dd6414b5 Phil Carmody 2010-10-20 179 dc186ad7 Thomas Gleixner 2009-11-16 180 #ifdef CONFIG_DEBUG_OBJECTS_WORK dc186ad7 Thomas Gleixner 2009-11-16 181 extern void __init_work(struct work_struct *work, int onstack); dc186ad7 Thomas Gleixner 2009-11-16 182 extern void destroy_work_on_stack(struct work_struct *work); ea2e64f2 Thomas Gleixner 2014-03-23 183 extern void destroy_delayed_work_on_stack(struct delayed_work *work); 4690c4ab Tejun Heo 2010-06-29 184 static inline unsigned int work_static(struct work_struct *work) 4690c4ab Tejun Heo 2010-06-29 185 { 22df02bb Tejun Heo 2010-06-29 @186 return *work_data_bits(work) & WORK_STRUCT_STATIC; 4690c4ab Tejun Heo 2010-06-29 187 } dc186ad7 Thomas Gleixner 2009-11-16 188 #else dc186ad7 Thomas Gleixner 2009-11-16 189 static inline void __init_work(struct work_struct *work, int onstack) { } dc186ad7 Thomas Gleixner 2009-11-16 190 static inline void destroy_work_on_stack(struct work_struct *work) { } ea2e64f2 Thomas Gleixner 2014-03-23 191 static inline void destroy_delayed_work_on_stack(struct delayed_work *work) { } 4690c4ab Tejun Heo 2010-06-29 192 static inline unsigned int work_static(struct work_struct *work) { return 0; } dc186ad7 Thomas Gleixner 2009-11-16 193 #endif dc186ad7 Thomas Gleixner 2009-11-16 194 :::::: The code at line 186 was first introduced by commit :::::: 22df02bb3fab24af97bff4c69cc6fd8529fc66fe workqueue: define masks for work flags and conditionalize STATIC flags :::::: TO: Tejun Heo <tj@xxxxxxxxxx> :::::: CC: Tejun Heo <tj@xxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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