Hi Eric, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-unstable head: 8d20350d536e5ecb12482b7ccc6cd04fe0ae6c11 commit: 4820d7a789905ed86ada5b25aa5d74fad6af3a51 [72/100] riscv/kexec: refactor for kernel/Kconfig.kexec config: riscv-randconfig-r004-20230704 (https://download.01.org/0day-ci/archive/20230705/202307050623.1pK6zLcS-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a) reproduce: (https://download.01.org/0day-ci/archive/20230705/202307050623.1pK6zLcS-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/202307050623.1pK6zLcS-lkp@xxxxxxxxx/ All error/warnings (new ones prefixed by >>): | ~~~~~~~~~~ ^ include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 594 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:743:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 743 | insb(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:104:53: note: expanded from macro 'insb' 104 | #define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from arch/riscv/kernel/crash_core.c:4: In file included from include/linux/pagemap.h:11: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:751:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 751 | insw(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw' 105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from arch/riscv/kernel/crash_core.c:4: In file included from include/linux/pagemap.h:11: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:759:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 759 | insl(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl' 106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from arch/riscv/kernel/crash_core.c:4: In file included from include/linux/pagemap.h:11: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:768:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 768 | outsb(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb' 118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from arch/riscv/kernel/crash_core.c:4: In file included from include/linux/pagemap.h:11: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:777:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 777 | outsw(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw' 119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from arch/riscv/kernel/crash_core.c:4: In file included from include/linux/pagemap.h:11: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:786:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 786 | outsl(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl' 120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from arch/riscv/kernel/crash_core.c:4: In file included from include/linux/pagemap.h:11: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:1134:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 1134 | return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port; | ~~~~~~~~~~ ^ >> arch/riscv/kernel/crash_core.c:8:20: error: use of undeclared identifier 'VA_BITS' 8 | VMCOREINFO_NUMBER(VA_BITS); | ^ >> arch/riscv/kernel/crash_core.c:12:57: warning: format specifies type 'unsigned long' but the argument has type 'int' [-Wformat] 12 | vmcoreinfo_append_str("NUMBER(VMALLOC_START)=0x%lx\n", VMALLOC_START); | ~~~ ^~~~~~~~~~~~~ | %x arch/riscv/include/asm/pgtable.h:865:24: note: expanded from macro 'VMALLOC_START' 865 | #define VMALLOC_START 0 | ^ >> arch/riscv/kernel/crash_core.c:14:57: error: use of undeclared identifier 'VMEMMAP_START' 14 | vmcoreinfo_append_str("NUMBER(VMEMMAP_START)=0x%lx\n", VMEMMAP_START); | ^ >> arch/riscv/kernel/crash_core.c:15:55: error: use of undeclared identifier 'VMEMMAP_END'; did you mean 'MEMREMAP_ENC'? 15 | vmcoreinfo_append_str("NUMBER(VMEMMAP_END)=0x%lx\n", VMEMMAP_END); | ^~~~~~~~~~~ | MEMREMAP_ENC include/linux/io.h:145:2: note: 'MEMREMAP_ENC' declared here 145 | MEMREMAP_ENC = 1 << 3, | ^ 14 warnings and 3 errors generated. vim +/VA_BITS +8 arch/riscv/kernel/crash_core.c 649d6b1019a2f2 Xianting Tian 2022-10-26 5 649d6b1019a2f2 Xianting Tian 2022-10-26 6 void arch_crash_save_vmcoreinfo(void) 649d6b1019a2f2 Xianting Tian 2022-10-26 7 { 649d6b1019a2f2 Xianting Tian 2022-10-26 @8 VMCOREINFO_NUMBER(VA_BITS); 649d6b1019a2f2 Xianting Tian 2022-10-26 9 VMCOREINFO_NUMBER(phys_ram_base); 649d6b1019a2f2 Xianting Tian 2022-10-26 10 649d6b1019a2f2 Xianting Tian 2022-10-26 11 vmcoreinfo_append_str("NUMBER(PAGE_OFFSET)=0x%lx\n", PAGE_OFFSET); 649d6b1019a2f2 Xianting Tian 2022-10-26 @12 vmcoreinfo_append_str("NUMBER(VMALLOC_START)=0x%lx\n", VMALLOC_START); 649d6b1019a2f2 Xianting Tian 2022-10-26 13 vmcoreinfo_append_str("NUMBER(VMALLOC_END)=0x%lx\n", VMALLOC_END); 649d6b1019a2f2 Xianting Tian 2022-10-26 @14 vmcoreinfo_append_str("NUMBER(VMEMMAP_START)=0x%lx\n", VMEMMAP_START); 649d6b1019a2f2 Xianting Tian 2022-10-26 @15 vmcoreinfo_append_str("NUMBER(VMEMMAP_END)=0x%lx\n", VMEMMAP_END); :::::: The code at line 8 was first introduced by commit :::::: 649d6b1019a2f243bc3a98cb85902a8ebf74289a RISC-V: Add arch_crash_save_vmcoreinfo support :::::: TO: Xianting Tian <xianting.tian@xxxxxxxxxxxxxxxxx> :::::: CC: Palmer Dabbelt <palmer@xxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
