[kbuild-all] [alibaba-cloud:linux-next 90/644] arch/m68k/include/asm/motorola_pgtable.h:199:11: error: dereferencing pointer to incomplete type 'const struct mm_struct'

tree: https://github.com/alibaba/cloud-kernel.git linux-next head: e07b931e8ed58352ad4839243454571b6ce59222 commit: c2df7a3ab1e074cd6648ae9bb1cc1e31cc46342c [90/644] device-dax: Move resource pinning+mapping into the common driver config: m68k-allmodconfig (attached as .config) compiler: m68k-linux-gcc (GCC) 9.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout c2df7a3ab1e074cd6648ae9bb1cc1e31cc46342c # save the attached .config to linux build tree GCC_VERSION=9.2.0 make.cross ARCH=m68k If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from arch/m68k/include/asm/pgtable_mm.h:148, from arch/m68k/include/asm/pgtable.h:5, from include/linux/memremap.h:7, from drivers//dax/bus.c:3: arch/m68k/include/asm/motorola_pgtable.h: In function 'pgd_offset': 199 | return mm->pgd + pgd_index(address); | ^~ vim +199 arch/m68k/include/asm/motorola_pgtable.h ^1da177e4c3f41 include/asm-m68k/motorola_pgtable.h Linus Torvalds 2005-04-16 194 ^1da177e4c3f41 include/asm-m68k/motorola_pgtable.h Linus Torvalds 2005-04-16 195 /* to find an entry in a page-table-directory */ 5b808a593588b2 include/asm-m68k/motorola_pgtable.h Geert Uytterhoeven 2008-02-07 196 static inline pgd_t *pgd_offset(const struct mm_struct *mm, 5b808a593588b2 include/asm-m68k/motorola_pgtable.h Geert Uytterhoeven 2008-02-07 197 unsigned long address) ^1da177e4c3f41 include/asm-m68k/motorola_pgtable.h Linus Torvalds 2005-04-16 198 { ^1da177e4c3f41 include/asm-m68k/motorola_pgtable.h Linus Torvalds 2005-04-16 @199 return mm->pgd + pgd_index(address); ^1da177e4c3f41 include/asm-m68k/motorola_pgtable.h Linus Torvalds 2005-04-16 200 } ^1da177e4c3f41 include/asm-m68k/motorola_pgtable.h Linus Torvalds 2005-04-16 201 :::::: The code at line 199 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds <torvalds(a)ppc970.osdl.org&gt; :::::: CC: Linus Torvalds <torvalds(a)ppc970.osdl.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org