linux-kernel - [arm-integrator:kernel-in-vmalloc-v6.0-rc1 11/30] arch/arm64/kernel/vdso.c:317:38: error: incompatible integer to pointer conversion passing 'unsigned long' to parameter of type 'const void *'

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Message-ID: <202210062012.3TFOm4im-lkp@intel.com>
Date:   Thu, 6 Oct 2022 20:23:49 +0800
From:   kernel test robot <lkp@...el.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [arm-integrator:kernel-in-vmalloc-v6.0-rc1 11/30]
 arch/arm64/kernel/vdso.c:317:38: error: incompatible integer to pointer
 conversion passing 'unsigned long' to parameter of type 'const void *'

Hi Linus,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git kernel-in-vmalloc-v6.0-rc1
head:   546e059d2e101237c587b372d4faf16696f59470
commit: abccaa86889322e58b320ccc8bfc587c304e20fd [11/30] arm64: memory: Make virt_to_pfn() a static inline
config: arm64-randconfig-r002-20221003
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920)
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 arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git/commit/?id=abccaa86889322e58b320ccc8bfc587c304e20fd
        git remote add arm-integrator https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git
        git fetch --no-tags arm-integrator kernel-in-vmalloc-v6.0-rc1
        git checkout abccaa86889322e58b320ccc8bfc587c304e20fd
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/kernel/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

>> arch/arm64/kernel/vdso.c:317:38: error: incompatible integer to pointer conversion passing 'unsigned long' to parameter of type 'const void *' [-Wint-conversion]
           aarch32_vectors_page = virt_to_page(vdso_page);
                                               ^~~~~~~~~
   arch/arm64/include/asm/memory.h:351:50: note: expanded from macro 'virt_to_page'
   #define virt_to_page(x)         pfn_to_page(virt_to_pfn(x))
                                                           ^
   include/asm-generic/memory_model.h:25:40: note: expanded from macro '__pfn_to_page'
   #define __pfn_to_page(pfn)      (vmemmap + (pfn))
                                               ^~~
   arch/arm64/include/asm/memory.h:324:53: note: passing argument to parameter 'kaddr' here
   static inline unsigned long virt_to_pfn(const void *kaddr)
                                                       ^
   1 error generated.


vim +317 arch/arm64/kernel/vdso.c

9031fefde6f2ac Will Deacon       2012-03-05  301  
1255a7341bee6c Vincenzo Frascino 2019-04-15  302  static int aarch32_alloc_kuser_vdso_page(void)
9031fefde6f2ac Will Deacon       2012-03-05  303  {
9031fefde6f2ac Will Deacon       2012-03-05  304  	extern char __kuser_helper_start[], __kuser_helper_end[];
9031fefde6f2ac Will Deacon       2012-03-05  305  	int kuser_sz = __kuser_helper_end - __kuser_helper_start;
1255a7341bee6c Vincenzo Frascino 2019-04-15  306  	unsigned long vdso_page;
9031fefde6f2ac Will Deacon       2012-03-05  307  
af1b3cf2c2a3f4 Vincenzo Frascino 2019-04-15  308  	if (!IS_ENABLED(CONFIG_KUSER_HELPERS))
af1b3cf2c2a3f4 Vincenzo Frascino 2019-04-15  309  		return 0;
af1b3cf2c2a3f4 Vincenzo Frascino 2019-04-15  310  
7cd6ca1d790226 Will Deacon       2021-03-18  311  	vdso_page = get_zeroed_page(GFP_KERNEL);
1255a7341bee6c Vincenzo Frascino 2019-04-15  312  	if (!vdso_page)
0d747f6585954d Vincenzo Frascino 2019-04-15  313  		return -ENOMEM;
9031fefde6f2ac Will Deacon       2012-03-05  314  
1255a7341bee6c Vincenzo Frascino 2019-04-15  315  	memcpy((void *)(vdso_page + 0x1000 - kuser_sz), __kuser_helper_start,
1255a7341bee6c Vincenzo Frascino 2019-04-15  316  	       kuser_sz);
74fc72e77dc5c8 Mark Rutland      2020-04-28 @317  	aarch32_vectors_page = virt_to_page(vdso_page);
1255a7341bee6c Vincenzo Frascino 2019-04-15  318  	return 0;
0d747f6585954d Vincenzo Frascino 2019-04-15  319  }
9031fefde6f2ac Will Deacon       2012-03-05  320  

:::::: The code at line 317 was first introduced by commit
:::::: 74fc72e77dc5c8033d1b47d2c8a7229b4b83a746 arm64: vdso: remove aarch32_vdso_pages[]

:::::: TO: Mark Rutland <mark.rutland@....com>
:::::: CC: Will Deacon <will@...nel.org>

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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