Hi Bhupesh, kernel test robot noticed the following build errors: [auto build test ERROR on next-20250808] [cannot apply to trace/for-next tip/sched/core brauner-vfs/vfs.all linus/master v6.17-rc1 v6.16 v6.16-rc7 v6.17-rc1] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Bhupesh/exec-Remove-obsolete-comments/20250811-144920 base: next-20250808 patch link: https://lore.kernel.org/r/20250811064609.918593-5-bhupesh%40igalia.com patch subject: [PATCH v7 4/4] treewide: Switch memcpy() users of 'task->comm' to a more safer implementation config: x86_64-buildonly-randconfig-001-20250811 (https://download.01.org/0day-ci/archive/20250812/202508120011.j4Pmr6Rf-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250812/202508120011.j4Pmr6Rf-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202508120011.j4Pmr6Rf-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from include/trace/define_trace.h:132, from include/trace/events/sched.h:901, from kernel/sched/core.c:85: include/trace/events/sched.h: In function 'do_trace_event_raw_event_sched_skip_cpuset_numa': >> include/trace/events/sched.h:796:39: error: passing argument 1 of '__cstr_array_copy' from incompatible pointer type [-Werror=incompatible-pointer-types] 796 | get_task_array(__entry->mem_allowed, mem_allowed_ptr->bits); include/trace/trace_events.h:427:11: note: in definition of macro '__DECLARE_EVENT_CLASS' 427 | { assign; } \ | ^~~~~~ include/trace/trace_events.h:435:23: note: in expansion of macro 'PARAMS' 435 | PARAMS(assign), PARAMS(print)) \ | ^~~~~~ include/trace/trace_events.h:40:9: note: in expansion of macro 'DECLARE_EVENT_CLASS' 40 | DECLARE_EVENT_CLASS(name, \ | ^~~~~~~~~~~~~~~~~~~ include/trace/trace_events.h:44:30: note: in expansion of macro 'PARAMS' 44 | PARAMS(assign), \ | ^~~~~~ include/trace/events/sched.h:775:1: note: in expansion of macro 'TRACE_EVENT' 775 | TRACE_EVENT(sched_skip_cpuset_numa, | ^~~~~~~~~~~ include/trace/events/sched.h:789:9: note: in expansion of macro 'TP_fast_assign' 789 | TP_fast_assign( | ^~~~~~~~~~~~~~ include/trace/events/sched.h:796:17: note: in expansion of macro 'get_task_array' 796 | get_task_array(__entry->mem_allowed, mem_allowed_ptr->bits); | ^~~~~~~~~~~~~~ In file included from include/linux/percpu.h:12, from arch/x86/include/asm/msr.h:16, from arch/x86/include/asm/tsc.h:11, from arch/x86/include/asm/timex.h:6, from include/linux/timex.h:67, from include/linux/time32.h:13, from include/linux/time.h:60, from include/linux/stat.h:19, from include/linux/fs.h:11, from include/linux/highmem.h:5, from kernel/sched/core.c:10: include/linux/sched.h:1991:33: note: expected 'char *' but argument is of type 'long unsigned int *' 1991 | __cstr_array_copy(char *dst, const char *src, | ~~~~~~^~~ include/trace/events/sched.h:796:69: error: passing argument 2 of '__cstr_array_copy' from incompatible pointer type [-Werror=incompatible-pointer-types] 796 | get_task_array(__entry->mem_allowed, mem_allowed_ptr->bits); | ~~~~~~~~~~~~~~~^~~~~~ | | | long unsigned int * include/trace/trace_events.h:427:11: note: in definition of macro '__DECLARE_EVENT_CLASS' 427 | { assign; } \ | ^~~~~~ include/trace/trace_events.h:435:23: note: in expansion of macro 'PARAMS' 435 | PARAMS(assign), PARAMS(print)) \ | ^~~~~~ include/trace/trace_events.h:40:9: note: in expansion of macro 'DECLARE_EVENT_CLASS' 40 | DECLARE_EVENT_CLASS(name, \ | ^~~~~~~~~~~~~~~~~~~ include/trace/trace_events.h:44:30: note: in expansion of macro 'PARAMS' 44 | PARAMS(assign), \ | ^~~~~~ include/trace/events/sched.h:775:1: note: in expansion of macro 'TRACE_EVENT' 775 | TRACE_EVENT(sched_skip_cpuset_numa, | ^~~~~~~~~~~ include/trace/events/sched.h:789:9: note: in expansion of macro 'TP_fast_assign' 789 | TP_fast_assign( | ^~~~~~~~~~~~~~ include/trace/events/sched.h:796:17: note: in expansion of macro 'get_task_array' 796 | get_task_array(__entry->mem_allowed, mem_allowed_ptr->bits); | ^~~~~~~~~~~~~~ include/linux/sched.h:1991:50: note: expected 'const char *' but argument is of type 'long unsigned int *' 1991 | __cstr_array_copy(char *dst, const char *src, | ~~~~~~~~~~~~^~~ In file included from include/trace/define_trace.h:133: include/trace/events/sched.h: In function 'do_perf_trace_sched_skip_cpuset_numa': >> include/trace/events/sched.h:796:39: error: passing argument 1 of '__cstr_array_copy' from incompatible pointer type [-Werror=incompatible-pointer-types] 796 | get_task_array(__entry->mem_allowed, mem_allowed_ptr->bits); include/trace/perf.h:51:11: note: in definition of macro '__DECLARE_EVENT_CLASS' 51 | { assign; } \ | ^~~~~~ include/trace/perf.h:67:23: note: in expansion of macro 'PARAMS' 67 | PARAMS(assign), PARAMS(print)) \ | ^~~~~~ include/trace/trace_events.h:40:9: note: in expansion of macro 'DECLARE_EVENT_CLASS' 40 | DECLARE_EVENT_CLASS(name, \ | ^~~~~~~~~~~~~~~~~~~ include/trace/trace_events.h:44:30: note: in expansion of macro 'PARAMS' 44 | PARAMS(assign), \ | ^~~~~~ include/trace/events/sched.h:775:1: note: in expansion of macro 'TRACE_EVENT' 775 | TRACE_EVENT(sched_skip_cpuset_numa, | ^~~~~~~~~~~ include/trace/events/sched.h:789:9: note: in expansion of macro 'TP_fast_assign' 789 | TP_fast_assign( | ^~~~~~~~~~~~~~ include/trace/events/sched.h:796:17: note: in expansion of macro 'get_task_array' 796 | get_task_array(__entry->mem_allowed, mem_allowed_ptr->bits); | ^~~~~~~~~~~~~~ include/linux/sched.h:1991:33: note: expected 'char *' but argument is of type 'long unsigned int *' 1991 | __cstr_array_copy(char *dst, const char *src, | ~~~~~~^~~ include/trace/events/sched.h:796:69: error: passing argument 2 of '__cstr_array_copy' from incompatible pointer type [-Werror=incompatible-pointer-types] 796 | get_task_array(__entry->mem_allowed, mem_allowed_ptr->bits); | ~~~~~~~~~~~~~~~^~~~~~ | | | long unsigned int * include/trace/perf.h:51:11: note: in definition of macro '__DECLARE_EVENT_CLASS' 51 | { assign; } \ | ^~~~~~ include/trace/perf.h:67:23: note: in expansion of macro 'PARAMS' 67 | PARAMS(assign), PARAMS(print)) \ | ^~~~~~ include/trace/trace_events.h:40:9: note: in expansion of macro 'DECLARE_EVENT_CLASS' 40 | DECLARE_EVENT_CLASS(name, \ | ^~~~~~~~~~~~~~~~~~~ include/trace/trace_events.h:44:30: note: in expansion of macro 'PARAMS' 44 | PARAMS(assign), \ | ^~~~~~ include/trace/events/sched.h:775:1: note: in expansion of macro 'TRACE_EVENT' 775 | TRACE_EVENT(sched_skip_cpuset_numa, | ^~~~~~~~~~~ include/trace/events/sched.h:789:9: note: in expansion of macro 'TP_fast_assign' 789 | TP_fast_assign( | ^~~~~~~~~~~~~~ include/trace/events/sched.h:796:17: note: in expansion of macro 'get_task_array' 796 | get_task_array(__entry->mem_allowed, mem_allowed_ptr->bits); | ^~~~~~~~~~~~~~ include/linux/sched.h:1991:50: note: expected 'const char *' but argument is of type 'long unsigned int *' 1991 | __cstr_array_copy(char *dst, const char *src, | ~~~~~~~~~~~~^~~ cc1: some warnings being treated as errors vim +/__cstr_array_copy +796 include/trace/events/sched.h 776 777 TP_PROTO(struct task_struct *tsk, nodemask_t *mem_allowed_ptr), 778 779 TP_ARGS(tsk, mem_allowed_ptr), 780 781 TP_STRUCT__entry( 782 __array( char, comm, TASK_COMM_LEN ) 783 __field( pid_t, pid ) 784 __field( pid_t, tgid ) 785 __field( pid_t, ngid ) 786 __array( unsigned long, mem_allowed, BITS_TO_LONGS(MAX_NUMNODES)) 787 ), 788 789 TP_fast_assign( 790 get_task_array(__entry->comm, tsk->comm); 791 __entry->pid = task_pid_nr(tsk); 792 __entry->tgid = task_tgid_nr(tsk); 793 __entry->ngid = task_numa_group_id(tsk); 794 BUILD_BUG_ON(sizeof(nodemask_t) != \ 795 BITS_TO_LONGS(MAX_NUMNODES) * sizeof(long)); > 796 get_task_array(__entry->mem_allowed, mem_allowed_ptr->bits); 797 ), 798 799 TP_printk("comm=%s pid=%d tgid=%d ngid=%d mem_nodes_allowed=%*pbl", 800 __entry->comm, 801 __entry->pid, 802 __entry->tgid, 803 __entry->ngid, 804 MAX_NUMNODES, __entry->mem_allowed) 805 ); 806 #endif /* CONFIG_NUMA_BALANCING */ 807 808 /* 809 * Tracepoint for waking a polling cpu without an IPI. 810 */ 811 TRACE_EVENT(sched_wake_idle_without_ipi, 812 813 TP_PROTO(int cpu), 814 815 TP_ARGS(cpu), 816 817 TP_STRUCT__entry( 818 __field( int, cpu ) 819 ), 820 821 TP_fast_assign( 822 __entry->cpu = cpu; 823 ), 824 825 TP_printk("cpu=%d", __entry->cpu) 826 ); 827 828 /* 829 * Following tracepoints are not exported in tracefs and provide hooking 830 * mechanisms only for testing and debugging purposes. 831 */ 832 DECLARE_TRACE(pelt_cfs, 833 TP_PROTO(struct cfs_rq *cfs_rq), 834 TP_ARGS(cfs_rq)); 835 836 DECLARE_TRACE(pelt_rt, 837 TP_PROTO(struct rq *rq), 838 TP_ARGS(rq)); 839 840 DECLARE_TRACE(pelt_dl, 841 TP_PROTO(struct rq *rq), 842 TP_ARGS(rq)); 843 844 DECLARE_TRACE(pelt_hw, 845 TP_PROTO(struct rq *rq), 846 TP_ARGS(rq)); 847 848 DECLARE_TRACE(pelt_irq, 849 TP_PROTO(struct rq *rq), 850 TP_ARGS(rq)); 851 852 DECLARE_TRACE(pelt_se, 853 TP_PROTO(struct sched_entity *se), 854 TP_ARGS(se)); 855 856 DECLARE_TRACE(sched_cpu_capacity, 857 TP_PROTO(struct rq *rq), 858 TP_ARGS(rq)); 859 860 DECLARE_TRACE(sched_overutilized, 861 TP_PROTO(struct root_domain *rd, bool overutilized), 862 TP_ARGS(rd, overutilized)); 863 864 DECLARE_TRACE(sched_util_est_cfs, 865 TP_PROTO(struct cfs_rq *cfs_rq), 866 TP_ARGS(cfs_rq)); 867 868 DECLARE_TRACE(sched_util_est_se, 869 TP_PROTO(struct sched_entity *se), 870 TP_ARGS(se)); 871 872 DECLARE_TRACE(sched_update_nr_running, 873 TP_PROTO(struct rq *rq, int change), 874 TP_ARGS(rq, change)); 875 876 DECLARE_TRACE(sched_compute_energy, 877 TP_PROTO(struct task_struct *p, int dst_cpu, unsigned long energy, 878 unsigned long max_util, unsigned long busy_time), 879 TP_ARGS(p, dst_cpu, energy, max_util, busy_time)); 880 881 DECLARE_TRACE(sched_entry, 882 TP_PROTO(bool preempt), 883 TP_ARGS(preempt)); 884 885 DECLARE_TRACE(sched_exit, 886 TP_PROTO(bool is_switch), 887 TP_ARGS(is_switch)); 888 889 DECLARE_TRACE_CONDITION(sched_set_state, 890 TP_PROTO(struct task_struct *tsk, int state), 891 TP_ARGS(tsk, state), 892 TP_CONDITION(!!(tsk->__state) != !!state)); 893 894 DECLARE_TRACE(sched_set_need_resched, 895 TP_PROTO(struct task_struct *tsk, int cpu, int tif), 896 TP_ARGS(tsk, cpu, tif)); 897 898 #endif /* _TRACE_SCHED_H */ 899 900 /* This part must be outside protection */ > 901 #include <trace/define_trace.h> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
