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Date: Tue, 14 Jun 2022 14:12:30 +0800
From: Kefeng Wang <wangkefeng.wang@...wei.com>
To: kernel test robot <lkp@...el.com>, <catalin.marinas@....com>,
<will@...nel.org>, <akpm@...ux-foundation.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>
CC: <kbuild-all@...ts.01.org>, <linux-mm@...ck.org>,
<hch@...radead.org>, <arnd@...db.de>, <anshuman.khandual@....com>,
Russell King <linux@...linux.org.uk>,
Christoph Hellwig <hch@....de>
Subject: Re: [PATCH v5 1/6] ARM: mm: kill unused runtime hook arch_iounmap()
On 2022/6/14 13:47, kernel test robot wrote:
> 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@...el.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);
The pstore should be fixed, not this patch,
iounmap((void __iomem *)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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