linux-kernel - [arm-integrator:kernel-in-vmalloc-v5.19-rc1 18/35] arch/arm64/include/asm/memory.h:357:66: warning: passing argument 1 of 'virt_to_pfn' makes pointer from integer without a cast

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Date:   Tue, 5 Jul 2022 08:35:14 +0800
From:   kernel test robot <lkp@...el.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [arm-integrator:kernel-in-vmalloc-v5.19-rc1 18/35]
 arch/arm64/include/asm/memory.h:357:66: warning: passing argument 1 of
 'virt_to_pfn' makes pointer from integer without a cast

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git kernel-in-vmalloc-v5.19-rc1
head:   144435741b0a6f31403d3084103678da3b4f9d11
commit: 8097eb8a345273ee3c268b7f2956ce820b914ef1 [18/35] arm64: memory: Make virt_to_pfn() a static inline
config: arm64-randconfig-r011-20220703 (https://download.01.org/0day-ci/archive/20220705/202207050801.sTfIGPhl-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 11.3.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git/commit/?id=8097eb8a345273ee3c268b7f2956ce820b914ef1
        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-v5.19-rc1
        git checkout 8097eb8a345273ee3c268b7f2956ce820b914ef1
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash fs/proc/

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

All warnings (new ones prefixed by >>):

   In file included from arch/arm64/include/asm/thread_info.h:17,
                    from include/linux/thread_info.h:60,
                    from arch/arm64/include/asm/preempt.h:6,
                    from include/linux/preempt.h:78,
                    from arch/arm64/include/asm/percpu.h:8,
                    from include/linux/irqflags.h:17,
                    from include/linux/rcupdate.h:26,
                    from include/linux/rculist.h:11,
                    from include/linux/pid.h:5,
                    from include/linux/sched.h:14,
                    from include/linux/sched/task_stack.h:9,
                    from include/linux/elfcore.h:7,
                    from include/linux/crash_core.h:6,
                    from fs/proc/kcore.c:13:
   fs/proc/kcore.c: In function 'kclist_add_private':
>> arch/arm64/include/asm/memory.h:357:66: warning: passing argument 1 of 'virt_to_pfn' makes pointer from integer without a cast [-Wint-conversion]
     357 |         __is_lm_address(__addr) && pfn_is_map_memory(virt_to_pfn(__addr));      \
         |                                                                  ^~~~~~
         |                                                                  |
         |                                                                  long unsigned int
   fs/proc/kcore.c:203:14: note: in expansion of macro 'virt_addr_valid'
     203 |         if (!virt_addr_valid(ent->addr))
         |              ^~~~~~~~~~~~~~~
   arch/arm64/include/asm/memory.h:312:53: note: expected 'const void *' but argument is of type 'long unsigned int'
     312 | static inline unsigned long virt_to_pfn(const void *kaddr)
         |                                         ~~~~~~~~~~~~^~~~~


vim +/virt_to_pfn +357 arch/arm64/include/asm/memory.h

4f04d8f0054511 Catalin Marinas 2012-03-05  354  
68dd8ef321626f Will Deacon     2019-08-13  355  #define virt_addr_valid(addr)	({					\
91cb2c8b072e00 Catalin Marinas 2021-02-01  356  	__typeof__(addr) __addr = __tag_reset(addr);			\
873ba463914cf4 Mike Rapoport   2021-06-30 @357  	__is_lm_address(__addr) && pfn_is_map_memory(virt_to_pfn(__addr));	\
68dd8ef321626f Will Deacon     2019-08-13  358  })
4f04d8f0054511 Catalin Marinas 2012-03-05  359  

:::::: The code at line 357 was first introduced by commit
:::::: 873ba463914cf484371cba06959d320f9d3121ca arm64: decouple check whether pfn is in linear map from pfn_valid()

:::::: TO: Mike Rapoport <rppt@...ux.ibm.com>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>

-- 
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https://01.org/lkp