tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-unstable head: e9efed1822aa2651d4970ee333ac8441557f9e33 commit: d3559f806797472fd2e79145cd1df9a524728ea0 [457/479] mm: remove page_mapping() config: s390-defconfig (https://download.01.org/0day-ci/archive/20240427/202404271523.VI3HNl2M-lkp@xxxxxxxxx/config) compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 5ef5eb66fb428aaf61fb51b709f065c069c11242) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240427/202404271523.VI3HNl2M-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/202404271523.VI3HNl2M-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from arch/s390/kernel/uv.c:14: In file included from include/linux/memblock.h:12: In file included from include/linux/mm.h:2258: include/linux/vmstat.h:500:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 500 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 501 | item]; | ~~~~ include/linux/vmstat.h:507:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 507 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 508 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ include/linux/vmstat.h:514:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 514 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ include/linux/vmstat.h:519:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 519 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 520 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ include/linux/vmstat.h:528:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 528 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 529 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ In file included from arch/s390/kernel/uv.c:14: In file included from include/linux/memblock.h:13: In file included from arch/s390/include/asm/dma.h:5: In file included from include/linux/io.h:14: In file included from arch/s390/include/asm/io.h:78: include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 548 | val = __raw_readb(PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu' 37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x)) | ^ include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16' 102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) | ^ In file included from arch/s390/kernel/uv.c:14: In file included from include/linux/memblock.h:13: In file included from arch/s390/include/asm/dma.h:5: In file included from include/linux/io.h:14: In file included from arch/s390/include/asm/io.h:78: include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu' 35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) | ^ include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32' 115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x)) | ^ In file included from arch/s390/kernel/uv.c:14: In file included from include/linux/memblock.h:13: In file included from arch/s390/include/asm/dma.h:5: In file included from include/linux/io.h:14: In file included from arch/s390/include/asm/io.h:78: include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 585 | __raw_writeb(value, PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 693 | readsb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 701 | readsw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 709 | readsl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 718 | writesb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 727 | writesw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 736 | writesl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ >> arch/s390/kernel/uv.c:196:13: error: call to undeclared function 'page_mapping'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 196 | } else if (page_mapping(page)) { | ^ arch/s390/kernel/uv.c:196:13: note: did you mean 'page_mapped'? include/linux/mm.h:1299:20: note: 'page_mapped' declared here 1299 | static inline bool page_mapped(const struct page *page) | ^ 17 warnings and 1 error generated. vim +/page_mapping +196 arch/s390/kernel/uv.c 380d97bd02fca7 Claudio Imbrenda 2021-09-20 182 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 183 /* 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 184 * Calculate the expected ref_count for a page that would otherwise have no 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 185 * further pins. This was cribbed from similar functions in other places in 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 186 * the kernel, but with some slight modifications. We know that a secure 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 187 * page can not be a huge page for example. 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 188 */ 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 189 static int expected_page_refs(struct page *page) 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 190 { 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 191 int res; 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 192 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 193 res = page_mapcount(page); 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 194 if (PageSwapCache(page)) { 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 195 res++; 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 @196 } else if (page_mapping(page)) { 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 197 res++; 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 198 if (page_has_private(page)) 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 199 res++; 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 200 } 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 201 return res; 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 202 } 214d9bbcd3a672 Claudio Imbrenda 2020-01-21 203 :::::: The code at line 196 was first introduced by commit :::::: 214d9bbcd3a67230b932f6cea83c078ab34d9e70 s390/mm: provide memory management functions for protected KVM guests :::::: TO: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx> :::::: CC: Christian Borntraeger <borntraeger@xxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
