Hi André, kernel test robot noticed the following build warnings: [auto build test WARNING on tip/locking/core] [also build test WARNING on tip/sched/core linus/master tip/x86/asm v6.12-rc5 next-20241101] [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/Andr-Almeida/futex-Use-explicit-sizes-for-compat_exit_robust_list/20241102-002419 base: tip/locking/core patch link: https://lore.kernel.org/r/20241101162147.284993-2-andrealmeid%40igalia.com patch subject: [PATCH v2 1/3] futex: Use explicit sizes for compat_exit_robust_list config: alpha-allnoconfig (https://download.01.org/0day-ci/archive/20241102/202411021349.tqg42lGq-lkp@xxxxxxxxx/config) compiler: alpha-linux-gcc (GCC) 13.3.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241102/202411021349.tqg42lGq-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/202411021349.tqg42lGq-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from include/net/compat.h:8, from include/net/scm.h:13, from include/linux/netlink.h:9, from include/uapi/linux/neighbour.h:6, from include/linux/netdevice.h:44, from include/net/sock.h:46, from include/linux/tcp.h:19, from include/linux/ipv6.h:102, from include/net/ipv6.h:12, from include/linux/sunrpc/clnt.h:29, from include/linux/nfs_fs.h:32, from init/do_mounts.c:23: >> include/linux/compat.h:665:35: warning: 'struct robust_list_head32' declared inside parameter list will not be visible outside of this definition or declaration 665 | compat_sys_set_robust_list(struct robust_list_head32 __user *head, | ^~~~~~~~~~~~~~~~~~ -- In file included from include/net/compat.h:8, from include/net/scm.h:13, from include/linux/netlink.h:9, from include/uapi/linux/neighbour.h:6, from include/linux/netdevice.h:44, from include/net/sock.h:46, from include/linux/tcp.h:19, from include/linux/ipv6.h:102, from include/net/addrconf.h:65, from lib/vsprintf.c:41: >> include/linux/compat.h:665:35: warning: 'struct robust_list_head32' declared inside parameter list will not be visible outside of this definition or declaration 665 | compat_sys_set_robust_list(struct robust_list_head32 __user *head, | ^~~~~~~~~~~~~~~~~~ lib/vsprintf.c: In function 'va_format': lib/vsprintf.c:1683:9: warning: function 'va_format' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format] 1683 | buf += vsnprintf(buf, end > buf ? end - buf : 0, va_fmt->fmt, va); | ^~~ -- In file included from kernel/time/hrtimer.c:44: >> include/linux/compat.h:665:35: warning: 'struct robust_list_head32' declared inside parameter list will not be visible outside of this definition or declaration 665 | compat_sys_set_robust_list(struct robust_list_head32 __user *head, | ^~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:121:35: warning: initialized field overwritten [-Woverride-init] 121 | [CLOCK_REALTIME] = HRTIMER_BASE_REALTIME, | ^~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:121:35: note: (near initialization for 'hrtimer_clock_to_base_table[0]') kernel/time/hrtimer.c:122:35: warning: initialized field overwritten [-Woverride-init] 122 | [CLOCK_MONOTONIC] = HRTIMER_BASE_MONOTONIC, | ^~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:122:35: note: (near initialization for 'hrtimer_clock_to_base_table[1]') kernel/time/hrtimer.c:123:35: warning: initialized field overwritten [-Woverride-init] 123 | [CLOCK_BOOTTIME] = HRTIMER_BASE_BOOTTIME, | ^~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:123:35: note: (near initialization for 'hrtimer_clock_to_base_table[7]') kernel/time/hrtimer.c:124:35: warning: initialized field overwritten [-Woverride-init] 124 | [CLOCK_TAI] = HRTIMER_BASE_TAI, | ^~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:124:35: note: (near initialization for 'hrtimer_clock_to_base_table[11]') -- In file included from kernel/futex/core.c:34: >> include/linux/compat.h:665:35: warning: 'struct robust_list_head32' declared inside parameter list will not be visible outside of this definition or declaration 665 | compat_sys_set_robust_list(struct robust_list_head32 __user *head, | ^~~~~~~~~~~~~~~~~~ kernel/futex/core.c: In function 'exit_robust_list32': kernel/futex/core.c:902:54: error: 'struct task_struct' has no member named 'compat_robust_list' 902 | struct robust_list_head32 __user *head = curr->compat_robust_list; | ^~ kernel/futex/core.c: At top level: kernel/futex/core.c:900:13: warning: 'exit_robust_list32' defined but not used [-Wunused-function] 900 | static void exit_robust_list32(struct task_struct *curr) | ^~~~~~~~~~~~~~~~~~ vim +665 include/linux/compat.h 621 622 #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64 623 asmlinkage long compat_sys_pwritev64(unsigned long fd, 624 const struct iovec __user *vec, 625 unsigned long vlen, loff_t pos); 626 #endif 627 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, 628 compat_off_t __user *offset, compat_size_t count); 629 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd, 630 compat_loff_t __user *offset, compat_size_t count); 631 asmlinkage long compat_sys_pselect6_time32(int n, compat_ulong_t __user *inp, 632 compat_ulong_t __user *outp, 633 compat_ulong_t __user *exp, 634 struct old_timespec32 __user *tsp, 635 void __user *sig); 636 asmlinkage long compat_sys_pselect6_time64(int n, compat_ulong_t __user *inp, 637 compat_ulong_t __user *outp, 638 compat_ulong_t __user *exp, 639 struct __kernel_timespec __user *tsp, 640 void __user *sig); 641 asmlinkage long compat_sys_ppoll_time32(struct pollfd __user *ufds, 642 unsigned int nfds, 643 struct old_timespec32 __user *tsp, 644 const compat_sigset_t __user *sigmask, 645 compat_size_t sigsetsize); 646 asmlinkage long compat_sys_ppoll_time64(struct pollfd __user *ufds, 647 unsigned int nfds, 648 struct __kernel_timespec __user *tsp, 649 const compat_sigset_t __user *sigmask, 650 compat_size_t sigsetsize); 651 asmlinkage long compat_sys_signalfd4(int ufd, 652 const compat_sigset_t __user *sigmask, 653 compat_size_t sigsetsize, int flags); 654 asmlinkage long compat_sys_newfstatat(unsigned int dfd, 655 const char __user *filename, 656 struct compat_stat __user *statbuf, 657 int flag); 658 asmlinkage long compat_sys_newfstat(unsigned int fd, 659 struct compat_stat __user *statbuf); 660 /* No generic prototype for sync_file_range and sync_file_range2 */ 661 asmlinkage long compat_sys_waitid(int, compat_pid_t, 662 struct compat_siginfo __user *, int, 663 struct compat_rusage __user *); 664 asmlinkage long > 665 compat_sys_set_robust_list(struct robust_list_head32 __user *head, 666 compat_size_t len); 667 asmlinkage long 668 compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, 669 compat_size_t __user *len_ptr); 670 asmlinkage long compat_sys_getitimer(int which, 671 struct old_itimerval32 __user *it); 672 asmlinkage long compat_sys_setitimer(int which, 673 struct old_itimerval32 __user *in, 674 struct old_itimerval32 __user *out); 675 asmlinkage long compat_sys_kexec_load(compat_ulong_t entry, 676 compat_ulong_t nr_segments, 677 struct compat_kexec_segment __user *, 678 compat_ulong_t flags); 679 asmlinkage long compat_sys_timer_create(clockid_t which_clock, 680 struct compat_sigevent __user *timer_event_spec, 681 timer_t __user *created_timer_id); 682 asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, 683 compat_long_t addr, compat_long_t data); 684 asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid, 685 unsigned int len, 686 compat_ulong_t __user *user_mask_ptr); 687 asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, 688 unsigned int len, 689 compat_ulong_t __user *user_mask_ptr); 690 asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr, 691 compat_stack_t __user *uoss_ptr); 692 asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, 693 compat_size_t sigsetsize); 694 #ifndef CONFIG_ODD_RT_SIGACTION 695 asmlinkage long compat_sys_rt_sigaction(int, 696 const struct compat_sigaction __user *, 697 struct compat_sigaction __user *, 698 compat_size_t); 699 #endif 700 asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set, 701 compat_sigset_t __user *oset, 702 compat_size_t sigsetsize); 703 asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset, 704 compat_size_t sigsetsize); 705 asmlinkage long compat_sys_rt_sigtimedwait_time32(compat_sigset_t __user *uthese, 706 struct compat_siginfo __user *uinfo, 707 struct old_timespec32 __user *uts, compat_size_t sigsetsize); 708 asmlinkage long compat_sys_rt_sigtimedwait_time64(compat_sigset_t __user *uthese, 709 struct compat_siginfo __user *uinfo, 710 struct __kernel_timespec __user *uts, compat_size_t sigsetsize); 711 asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig, 712 struct compat_siginfo __user *uinfo); 713 /* No generic prototype for rt_sigreturn */ 714 asmlinkage long compat_sys_times(struct compat_tms __user *tbuf); 715 asmlinkage long compat_sys_getrlimit(unsigned int resource, 716 struct compat_rlimit __user *rlim); 717 asmlinkage long compat_sys_setrlimit(unsigned int resource, 718 struct compat_rlimit __user *rlim); 719 asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru); 720 asmlinkage long compat_sys_gettimeofday(struct old_timeval32 __user *tv, 721 struct timezone __user *tz); 722 asmlinkage long compat_sys_settimeofday(struct old_timeval32 __user *tv, 723 struct timezone __user *tz); 724 asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info); 725 asmlinkage long compat_sys_mq_open(const char __user *u_name, 726 int oflag, compat_mode_t mode, 727 struct compat_mq_attr __user *u_attr); 728 asmlinkage long compat_sys_mq_notify(mqd_t mqdes, 729 const struct compat_sigevent __user *u_notification); 730 asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes, 731 const struct compat_mq_attr __user *u_mqstat, 732 struct compat_mq_attr __user *u_omqstat); 733 asmlinkage long compat_sys_msgctl(int first, int second, void __user *uptr); 734 asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp, 735 compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg); 736 asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp, 737 compat_ssize_t msgsz, int msgflg); 738 asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg); 739 asmlinkage long compat_sys_shmctl(int first, int second, void __user *uptr); 740 asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg); 741 asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len, 742 unsigned flags, struct sockaddr __user *addr, 743 int __user *addrlen); 744 asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, 745 unsigned flags); 746 asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, 747 unsigned int flags); 748 /* No generic prototype for readahead */ 749 asmlinkage long compat_sys_keyctl(u32 option, 750 u32 arg2, u32 arg3, u32 arg4, u32 arg5); 751 asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv, 752 const compat_uptr_t __user *envp); 753 /* No generic prototype for fadvise64_64 */ 754 /* CONFIG_MMU only */ 755 asmlinkage long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, 756 compat_pid_t pid, int sig, 757 struct compat_siginfo __user *uinfo); 758 asmlinkage long compat_sys_recvmmsg_time64(int fd, struct compat_mmsghdr __user *mmsg, 759 unsigned vlen, unsigned int flags, 760 struct __kernel_timespec __user *timeout); 761 asmlinkage long compat_sys_recvmmsg_time32(int fd, struct compat_mmsghdr __user *mmsg, 762 unsigned vlen, unsigned int flags, 763 struct old_timespec32 __user *timeout); 764 asmlinkage long compat_sys_wait4(compat_pid_t pid, 765 compat_uint_t __user *stat_addr, int options, 766 struct compat_rusage __user *ru); 767 asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32, 768 int, const char __user *); 769 asmlinkage long compat_sys_open_by_handle_at(int mountdirfd, 770 struct file_handle __user *handle, 771 int flags); 772 asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg, 773 unsigned vlen, unsigned int flags); 774 asmlinkage long compat_sys_execveat(int dfd, const char __user *filename, 775 const compat_uptr_t __user *argv, 776 const compat_uptr_t __user *envp, int flags); 777 asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd, 778 const struct iovec __user *vec, 779 compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags); 780 asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd, 781 const struct iovec __user *vec, 782 compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags); 783 #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64V2 784 asmlinkage long compat_sys_preadv64v2(unsigned long fd, 785 const struct iovec __user *vec, 786 unsigned long vlen, loff_t pos, rwf_t flags); 787 #endif 788 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
