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Date:   Tue, 14 Jun 2022 13:47:33 +0800
From:   kernel test robot <lkp@intel.com>
To:     Kefeng Wang <wangkefeng.wang@huawei.com>, catalin.marinas@arm.com,
        will@kernel.org, akpm@linux-foundation.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Cc:     kbuild-all@lists.01.org, linux-mm@kvack.org, hch@infradead.org,
        arnd@arndb.de, anshuman.khandual@arm.com,
        Kefeng Wang <wangkefeng.wang@huawei.com>,
        Russell King <linux@armlinux.org.uk>,
        Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH v5 1/6] ARM: mm: kill unused runtime hook arch_iounmap()
Message-ID: <202206141355.p1aTShLo-lkp@intel.com>
References: <20220607125027.44946-2-wangkefeng.wang@huawei.com>
MIME-Version: 1.0
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In-Reply-To: <20220607125027.44946-2-wangkefeng.wang@huawei.com>
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Hi Kefeng,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v5.19-rc2 next-20220610]
[cannot apply to arm64/for-next/core arnd-asm-generic/master akpm-mm/mm-everything]
[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/intel-lab-lkp/linux/commits/Kefeng-Wang/arm64-Cleanup-ioremap-and-support-ioremap_prot/20220607-204345
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git e71e60cd74df9386c3f684c54888f2367050b831
config: arm-randconfig-s031-20220613 (https://download.01.org/0day-ci/archive/20220614/202206141355.p1aTShLo-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-30-g92122700-dirty
        # https://github.com/intel-lab-lkp/linux/commit/5a6f8121572d1f82b599d118e9070ef4ba16183b
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Kefeng-Wang/arm64-Cleanup-ioremap-and-support-ioremap_prot/20220607-204345
        git checkout 5a6f8121572d1f82b599d118e9070ef4ba16183b
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm SHELL=/bin/bash fs/pstore/

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


sparse warnings: (new ones prefixed by >>)
   fs/pstore/ram_core.c:278:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void volatile [noderef] __iomem *to @@     got unsigned char * @@
   fs/pstore/ram_core.c:278:9: sparse:     expected void volatile [noderef] __iomem *to
   fs/pstore/ram_core.c:278:9: sparse:     got unsigned char *
   fs/pstore/ram_core.c:311:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void const volatile [noderef] __iomem *from @@     got unsigned char * @@
   fs/pstore/ram_core.c:311:9: sparse:     expected void const volatile [noderef] __iomem *from
   fs/pstore/ram_core.c:311:9: sparse:     got unsigned char *
   fs/pstore/ram_core.c:312:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void const volatile [noderef] __iomem *from @@     got unsigned char * @@
   fs/pstore/ram_core.c:312:9: sparse:     expected void const volatile [noderef] __iomem *from
   fs/pstore/ram_core.c:312:9: sparse:     got unsigned char *
   fs/pstore/ram_core.c:466:20: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void *va @@     got void [noderef] __iomem * @@
   fs/pstore/ram_core.c:466:20: sparse:     expected void *va
   fs/pstore/ram_core.c:466:20: sparse:     got void [noderef] __iomem *
   fs/pstore/ram_core.c:468:20: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void *va @@     got void [noderef] __iomem * @@
   fs/pstore/ram_core.c:468:20: sparse:     expected void *va
   fs/pstore/ram_core.c:468:20: sparse:     got void [noderef] __iomem *
>> fs/pstore/ram_core.c:556:36: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void volatile [noderef] __iomem *io_addr @@     got void *vaddr @@
   fs/pstore/ram_core.c:556:36: sparse:     expected void volatile [noderef] __iomem *io_addr
   fs/pstore/ram_core.c:556:36: sparse:     got void *vaddr
   fs/pstore/ram_core.c:69:17: sparse: sparse: context imbalance in 'buffer_start_add' - unexpected unlock
   fs/pstore/ram_core.c:95:17: sparse: sparse: context imbalance in 'buffer_size_add' - unexpected unlock

vim +556 fs/pstore/ram_core.c

bb4206f2042d95 drivers/staging/android/persistent_ram.c Anton Vorontsov 2012-05-11  545  
d3b487695120b5 drivers/staging/android/persistent_ram.c Anton Vorontsov 2012-05-11  546  void persistent_ram_free(struct persistent_ram_zone *prz)
d3b487695120b5 drivers/staging/android/persistent_ram.c Anton Vorontsov 2012-05-11  547  {
beeb94321a7a6d fs/pstore/ram_core.c                     Anton Vorontsov 2012-06-18  548  	if (!prz)
beeb94321a7a6d fs/pstore/ram_core.c                     Anton Vorontsov 2012-06-18  549  		return;
beeb94321a7a6d fs/pstore/ram_core.c                     Anton Vorontsov 2012-06-18  550  
beeb94321a7a6d fs/pstore/ram_core.c                     Anton Vorontsov 2012-06-18  551  	if (prz->vaddr) {
d3b487695120b5 drivers/staging/android/persistent_ram.c Anton Vorontsov 2012-05-11  552  		if (pfn_valid(prz->paddr >> PAGE_SHIFT)) {
831b624df1b420 fs/pstore/ram_core.c                     Bin Yang        2018-09-12  553  			/* We must vunmap() at page-granularity. */
831b624df1b420 fs/pstore/ram_core.c                     Bin Yang        2018-09-12  554  			vunmap(prz->vaddr - offset_in_page(prz->paddr));
d3b487695120b5 drivers/staging/android/persistent_ram.c Anton Vorontsov 2012-05-11  555  		} else {
d3b487695120b5 drivers/staging/android/persistent_ram.c Anton Vorontsov 2012-05-11 @556  			iounmap(prz->vaddr);
d3b487695120b5 drivers/staging/android/persistent_ram.c Anton Vorontsov 2012-05-11  557  			release_mem_region(prz->paddr, prz->size);
d3b487695120b5 drivers/staging/android/persistent_ram.c Anton Vorontsov 2012-05-11  558  		}
beeb94321a7a6d fs/pstore/ram_core.c                     Anton Vorontsov 2012-06-18  559  		prz->vaddr = NULL;
beeb94321a7a6d fs/pstore/ram_core.c                     Anton Vorontsov 2012-06-18  560  	}
f2531f1976d98a fs/pstore/ram_core.c                     Kees Cook       2018-03-07  561  	if (prz->rs_decoder) {
f2531f1976d98a fs/pstore/ram_core.c                     Kees Cook       2018-03-07  562  		free_rs(prz->rs_decoder);
f2531f1976d98a fs/pstore/ram_core.c                     Kees Cook       2018-03-07  563  		prz->rs_decoder = NULL;
f2531f1976d98a fs/pstore/ram_core.c                     Kees Cook       2018-03-07  564  	}
f2531f1976d98a fs/pstore/ram_core.c                     Kees Cook       2018-03-07  565  	kfree(prz->ecc_info.par);
f2531f1976d98a fs/pstore/ram_core.c                     Kees Cook       2018-03-07  566  	prz->ecc_info.par = NULL;
f2531f1976d98a fs/pstore/ram_core.c                     Kees Cook       2018-03-07  567  
d3b487695120b5 drivers/staging/android/persistent_ram.c Anton Vorontsov 2012-05-11  568  	persistent_ram_free_old(prz);
1227daa43bce13 fs/pstore/ram_core.c                     Kees Cook       2018-10-17  569  	kfree(prz->label);
d3b487695120b5 drivers/staging/android/persistent_ram.c Anton Vorontsov 2012-05-11  570  	kfree(prz);
d3b487695120b5 drivers/staging/android/persistent_ram.c Anton Vorontsov 2012-05-11  571  }
d3b487695120b5 drivers/staging/android/persistent_ram.c Anton Vorontsov 2012-05-11  572  

-- 
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https://01.org/lkp