Hi, [auto build test ERROR on tip/sched/core] [also build test ERROR on v4.7-rc3 next-20160614] [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/WANG-Chao/sched-unlikely-corrupted-stack-end/20160614-162711 config: ia64-allmodconfig (attached as .config) compiler: ia64-linux-gcc (GCC) 4.9.0 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 # save the attached .config to linux build tree make.cross ARCH=ia64 All error/warnings (new ones prefixed by >>): warning: (FAULT_INJECTION_STACKTRACE_FILTER && LATENCYTOP && KMEMCHECK && LOCKDEP) selects FRAME_POINTER which has unmet direct dependencies (DEBUG_KERNEL && (CRIS || M68K || FRV || UML || AVR32 || SUPERH || BLACKFIN || MN10300 || METAG) || ARCH_WANT_FRAME_POINTERS) warning: (FAULT_INJECTION_STACKTRACE_FILTER && LATENCYTOP && KMEMCHECK && LOCKDEP) selects FRAME_POINTER which has unmet direct dependencies (DEBUG_KERNEL && (CRIS || M68K || FRV || UML || AVR32 || SUPERH || BLACKFIN || MN10300 || METAG) || ARCH_WANT_FRAME_POINTERS) In file included from include/uapi/linux/stddef.h:1:0, from include/linux/stddef.h:4, from include/uapi/linux/posix_types.h:4, from include/uapi/linux/types.h:13, from include/linux/types.h:5, from include/uapi/linux/capability.h:16, from include/linux/capability.h:15, from include/linux/sched.h:15, from arch/ia64/kernel/asm-offsets.c:9: include/linux/sched.h: In function 'task_stack_end_corrupted': >> arch/ia64/include/asm/ptrace.h:37:29: error: 'IA64_TASK_SIZE' undeclared >> (first use in this function) #define IA64_RBS_OFFSET ((IA64_TASK_SIZE + IA64_THREAD_INFO_SIZE + 31) & ~31) ^ include/linux/compiler.h:170:42: note: in definition of macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ >> arch/ia64/include/asm/thread_info.h:74:57: note: in expansion of macro >> 'IA64_RBS_OFFSET' #define end_of_stack(p) (unsigned long *)((void *)(p) + IA64_RBS_OFFSET) ^ >> include/linux/sched.h:3006:20: note: in expansion of macro 'end_of_stack' return unlikely(*(end_of_stack(p)) != STACK_END_MAGIC); ^ arch/ia64/include/asm/ptrace.h:37:29: note: each undeclared identifier is reported only once for each function it appears in #define IA64_RBS_OFFSET ((IA64_TASK_SIZE + IA64_THREAD_INFO_SIZE + 31) & ~31) ^ include/linux/compiler.h:170:42: note: in definition of macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ >> arch/ia64/include/asm/thread_info.h:74:57: note: in expansion of macro >> 'IA64_RBS_OFFSET' #define end_of_stack(p) (unsigned long *)((void *)(p) + IA64_RBS_OFFSET) ^ >> include/linux/sched.h:3006:20: note: in expansion of macro 'end_of_stack' return unlikely(*(end_of_stack(p)) != STACK_END_MAGIC); ^ >> arch/ia64/include/asm/ptrace.h:37:46: error: 'IA64_THREAD_INFO_SIZE' >> undeclared (first use in this function) #define IA64_RBS_OFFSET ((IA64_TASK_SIZE + IA64_THREAD_INFO_SIZE + 31) & ~31) ^ include/linux/compiler.h:170:42: note: in definition of macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ >> arch/ia64/include/asm/thread_info.h:74:57: note: in expansion of macro >> 'IA64_RBS_OFFSET' #define end_of_stack(p) (unsigned long *)((void *)(p) + IA64_RBS_OFFSET) ^ >> include/linux/sched.h:3006:20: note: in expansion of macro 'end_of_stack' return unlikely(*(end_of_stack(p)) != STACK_END_MAGIC); ^ make[2]: *** [arch/ia64/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [sub-make] Error 2 vim +/end_of_stack +3006 include/linux/sched.h 2990 * When the stack grows up, this is the highest address. 2991 * Beyond that position, we corrupt data on the next page. 2992 */ 2993 static inline unsigned long *end_of_stack(struct task_struct *p) 2994 { 2995 #ifdef CONFIG_STACK_GROWSUP 2996 return (unsigned long *)((unsigned long)task_thread_info(p) + THREAD_SIZE) - 1; 2997 #else 2998 return (unsigned long *)(task_thread_info(p) + 1); 2999 #endif 3000 } 3001 3002 #endif 3003 3004 static inline int task_stack_end_corrupted(struct task_struct *p) 3005 { > 3006 return unlikely(*(end_of_stack(p)) != STACK_END_MAGIC); 3007 } 3008 3009 static inline int object_is_on_stack(void *obj) 3010 { 3011 void *stack = task_stack_page(current); 3012 3013 return (obj >= stack) && (obj < (stack + THREAD_SIZE)); 3014 } --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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