Hi, [auto build test ERROR on linus/master] [also build test ERROR on v4.7-rc5 next-20160629] [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/Oleg-Nesterov/kthread-to_live_kthread-needs-try_get_task_stack/20160630-020824 config: i386-tinyconfig (attached as .config) compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430 reproduce: # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): kernel/kthread.c: In function 'to_live_kthread': >> kernel/kthread.c:67:23: error: implicit declaration of function >> 'try_get_task_stack' [-Werror=implicit-function-declaration] if (likely(vfork) && try_get_task_stack(k)) ^~~~~~~~~~~~~~~~~~ kernel/kthread.c: In function 'kthread_unpark': >> kernel/kthread.c:430:3: error: implicit declaration of function >> 'put_task_stack' [-Werror=implicit-function-declaration] put_task_stack(k); ^~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/try_get_task_stack +67 kernel/kthread.c 61 return __to_kthread(k->vfork_done); 62 } 63 64 static struct kthread *to_live_kthread(struct task_struct *k) 65 { 66 struct completion *vfork = ACCESS_ONCE(k->vfork_done); > 67 if (likely(vfork) && try_get_task_stack(k)) 68 return __to_kthread(vfork); 69 return NULL; 70 } --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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