Hi Tianyi, kernel test robot noticed the following build warnings: [auto build test WARNING on 8a749fd1a8720d4619c91c8b6e7528c0a355c0aa] url: https://github.com/intel-lab-lkp/linux/commits/Tianyi-Liu/KVM-Add-arch-specific-interfaces-for-sampling-guest-callchains/20231008-230042 base: 8a749fd1a8720d4619c91c8b6e7528c0a355c0aa patch link: https://lore.kernel.org/r/SY4P282MB108433024762F1F292D47C2A9DCFA%40SY4P282MB1084.AUSP282.PROD.OUTLOOK.COM patch subject: [PATCH v2 4/5] perf kvm: Support sampling guest callchains config: i386-randconfig-061-20231012 (https://download.01.org/0day-ci/archive/20231013/202310130419.cIkNaYZm-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231013/202310130419.cIkNaYZm-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/202310130419.cIkNaYZm-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> arch/x86/events/core.c:2808:52: sparse: sparse: incorrect type in argument 1 (different modifiers) @@ expected void *addr @@ got struct stack_frame *const * @@ arch/x86/events/core.c:2808:52: sparse: expected void *addr arch/x86/events/core.c:2808:52: sparse: got struct stack_frame *const * >> arch/x86/events/core.c:2811:52: sparse: sparse: incorrect type in argument 1 (different modifiers) @@ expected void *addr @@ got unsigned long const * @@ arch/x86/events/core.c:2811:52: sparse: expected void *addr arch/x86/events/core.c:2811:52: sparse: got unsigned long const * >> arch/x86/events/core.c:2784:44: sparse: sparse: incorrect type in argument 1 (different modifiers) @@ expected void *addr @@ got unsigned int const * @@ arch/x86/events/core.c:2784:44: sparse: expected void *addr arch/x86/events/core.c:2784:44: sparse: got unsigned int const * arch/x86/events/core.c:2787:44: sparse: sparse: incorrect type in argument 1 (different modifiers) @@ expected void *addr @@ got unsigned int const * @@ arch/x86/events/core.c:2787:44: sparse: expected void *addr arch/x86/events/core.c:2787:44: sparse: got unsigned int const * vim +2808 arch/x86/events/core.c 2775 2776 static inline void 2777 perf_callchain_guest32(struct perf_callchain_entry_ctx *entry) 2778 { 2779 struct stack_frame_ia32 frame; 2780 const struct stack_frame_ia32 *fp; 2781 2782 fp = (void *)perf_guest_get_frame_pointer(); 2783 while (fp && entry->nr < entry->max_stack) { > 2784 if (!perf_guest_read_virt(&fp->next_frame, &frame.next_frame, 2785 sizeof(frame.next_frame))) 2786 break; 2787 if (!perf_guest_read_virt(&fp->return_address, &frame.return_address, 2788 sizeof(frame.return_address))) 2789 break; 2790 perf_callchain_store(entry, frame.return_address); 2791 fp = (void *)frame.next_frame; 2792 } 2793 } 2794 2795 void 2796 perf_callchain_guest(struct perf_callchain_entry_ctx *entry) 2797 { 2798 struct stack_frame frame; 2799 const struct stack_frame *fp; 2800 unsigned int guest_state; 2801 2802 guest_state = perf_guest_state(); 2803 perf_callchain_store(entry, perf_guest_get_ip()); 2804 2805 if (guest_state & PERF_GUEST_64BIT) { 2806 fp = (void *)perf_guest_get_frame_pointer(); 2807 while (fp && entry->nr < entry->max_stack) { > 2808 if (!perf_guest_read_virt(&fp->next_frame, &frame.next_frame, 2809 sizeof(frame.next_frame))) 2810 break; > 2811 if (!perf_guest_read_virt(&fp->return_address, &frame.return_address, 2812 sizeof(frame.return_address))) 2813 break; 2814 perf_callchain_store(entry, frame.return_address); 2815 fp = (void *)frame.next_frame; 2816 } 2817 } else { 2818 perf_callchain_guest32(entry); 2819 } 2820 } 2821 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
