Re: [PATCH -fixes 1/4] riscv: Fix is_linear_mapping with recent move of KASAN region

[kernel test robot <lkp@intel.com>]

Hi Alexandre,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v5.17-rc4 next-20220217]
[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]

url:    https://github.com/0day-ci/linux/commits/Alexandre-Ghiti/Fixes-KASAN-and-other-along-the-way/20220220-181628
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 4f12b742eb2b3a850ac8be7dc4ed52976fc6cb0b
config: riscv-nommu_virt_defconfig (https://download.01.org/0day-ci/archive/20220221/202202210123.ilPycxXe-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # https://github.com/0day-ci/linux/commit/de8a909a9eabf9066802a3396b7009cbf4fa4369
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Alexandre-Ghiti/Fixes-KASAN-and-other-along-the-way/20220220-181628
        git checkout de8a909a9eabf9066802a3396b7009cbf4fa4369
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv prepare

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from arch/riscv/kernel/asm-offsets.c:10:
>> include/linux/mm.h:837:22: error: use of undeclared identifier 'KERN_VIRT_SIZE'; did you mean 'KERN_VERSION'?
           struct page *page = virt_to_page(x);
                               ^
   arch/riscv/include/asm/page.h:165:42: note: expanded from macro 'virt_to_page'
   #define virt_to_page(vaddr)     (pfn_to_page(virt_to_pfn(vaddr)))
                                                ^
   arch/riscv/include/asm/page.h:162:41: note: expanded from macro 'virt_to_pfn'
   #define virt_to_pfn(vaddr)      (phys_to_pfn(__pa(vaddr)))
                                                ^
   arch/riscv/include/asm/page.h:156:18: note: expanded from macro '__pa'
   #define __pa(x)         __virt_to_phys((unsigned long)(x))
                           ^
   arch/riscv/include/asm/page.h:151:27: note: expanded from macro '__virt_to_phys'
   #define __virt_to_phys(x)       __va_to_pa_nodebug(x)
                                   ^
   arch/riscv/include/asm/page.h:143:2: note: expanded from macro '__va_to_pa_nodebug'
           is_linear_mapping(_x) ?                                                 \
           ^
   arch/riscv/include/asm/page.h:122:75: note: expanded from macro 'is_linear_mapping'
           ((x) >= PAGE_OFFSET && (!IS_ENABLED(CONFIG_64BIT) || (x) < PAGE_OFFSET + KERN_VIRT_SIZE))
                                                                                    ^
   include/uapi/linux/sysctl.h:88:2: note: 'KERN_VERSION' declared here
           KERN_VERSION=4,         /* string: compile time info */
           ^
   In file included from arch/riscv/kernel/asm-offsets.c:10:
   include/linux/mm.h:844:22: error: use of undeclared identifier 'KERN_VIRT_SIZE'; did you mean 'KERN_VERSION'?
           struct page *page = virt_to_page(x);
                               ^
   arch/riscv/include/asm/page.h:165:42: note: expanded from macro 'virt_to_page'
   #define virt_to_page(vaddr)     (pfn_to_page(virt_to_pfn(vaddr)))
                                                ^
   arch/riscv/include/asm/page.h:162:41: note: expanded from macro 'virt_to_pfn'
   #define virt_to_pfn(vaddr)      (phys_to_pfn(__pa(vaddr)))
                                                ^
   arch/riscv/include/asm/page.h:156:18: note: expanded from macro '__pa'
   #define __pa(x)         __virt_to_phys((unsigned long)(x))
                           ^
   arch/riscv/include/asm/page.h:151:27: note: expanded from macro '__virt_to_phys'
   #define __virt_to_phys(x)       __va_to_pa_nodebug(x)
                                   ^
   arch/riscv/include/asm/page.h:143:2: note: expanded from macro '__va_to_pa_nodebug'
           is_linear_mapping(_x) ?                                                 \
           ^
   arch/riscv/include/asm/page.h:122:75: note: expanded from macro 'is_linear_mapping'
           ((x) >= PAGE_OFFSET && (!IS_ENABLED(CONFIG_64BIT) || (x) < PAGE_OFFSET + KERN_VIRT_SIZE))
                                                                                    ^
   include/uapi/linux/sysctl.h:88:2: note: 'KERN_VERSION' declared here
           KERN_VERSION=4,         /* string: compile time info */
           ^
   2 errors generated.
   make[2]: *** [scripts/Makefile.build:121: arch/riscv/kernel/asm-offsets.s] Error 1
   make[2]: Target '__build' not remade because of errors.
   make[1]: *** [Makefile:1191: prepare0] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:219: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.


vim +837 include/linux/mm.h

70b50f94f1644e Andrea Arcangeli   2011-11-02  834  
b49af68ff9fc5d Christoph Lameter  2007-05-06  835  static inline struct page *virt_to_head_page(const void *x)
b49af68ff9fc5d Christoph Lameter  2007-05-06  836  {
b49af68ff9fc5d Christoph Lameter  2007-05-06 @837  	struct page *page = virt_to_page(x);
ccaafd7fd039ae Joonsoo Kim        2015-02-10  838  
1d798ca3f16437 Kirill A. Shutemov 2015-11-06  839  	return compound_head(page);
b49af68ff9fc5d Christoph Lameter  2007-05-06  840  }
b49af68ff9fc5d Christoph Lameter  2007-05-06  841  

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