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Message-ID: <202210092058.ZxoHVuuE-lkp@intel.com>
Date: Sun, 9 Oct 2022 20:08:38 +0800
From: kernel test robot <lkp@...el.com>
To: Kefeng Wang <wangkefeng.wang@...wei.com>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
Will Deacon <will@...nel.org>, Christoph Hellwig <hch@....de>,
Arnd Bergmann <arnd@...db.de>,
"Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
Subject: arch/arm/kernel/crash_dump.c:33:17: sparse: sparse: incorrect type
in argument 1 (different address spaces)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: a6afa4199d3d038fbfdff5511f7523b0e30cb774
commit: d803336abdbc1bfacdb32b2cf9f4fdbee072b8ee ARM: mm: kill unused runtime hook arch_iounmap()
date: 3 months ago
config: arm-randconfig-s052-20221009
compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0
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: v0.6.4-39-gce1a6720-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d803336abdbc1bfacdb32b2cf9f4fdbee072b8ee
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout d803336abdbc1bfacdb32b2cf9f4fdbee072b8ee
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm SHELL=/bin/bash arch/arm/kernel/
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 >>)
arch/arm/kernel/crash_dump.c:27:15: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void *vaddr @@ got void [noderef] __iomem * @@
arch/arm/kernel/crash_dump.c:27:15: sparse: expected void *vaddr
arch/arm/kernel/crash_dump.c:27:15: sparse: got void [noderef] __iomem *
>> arch/arm/kernel/crash_dump.c:33:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void volatile [noderef] __iomem *io_addr @@ got void *vaddr @@
arch/arm/kernel/crash_dump.c:33:17: sparse: expected void volatile [noderef] __iomem *io_addr
arch/arm/kernel/crash_dump.c:33:17: sparse: got void *vaddr
vim +33 arch/arm/kernel/crash_dump.c
67742c8168ed66 Mika Westerberg 2010-05-10 18
5d8de293c22489 Matthew Wilcox (Oracle 2022-04-29 19) ssize_t copy_oldmem_page(struct iov_iter *iter, unsigned long pfn,
5d8de293c22489 Matthew Wilcox (Oracle 2022-04-29 20) size_t csize, unsigned long offset)
67742c8168ed66 Mika Westerberg 2010-05-10 21 {
67742c8168ed66 Mika Westerberg 2010-05-10 22 void *vaddr;
67742c8168ed66 Mika Westerberg 2010-05-10 23
67742c8168ed66 Mika Westerberg 2010-05-10 24 if (!csize)
67742c8168ed66 Mika Westerberg 2010-05-10 25 return 0;
67742c8168ed66 Mika Westerberg 2010-05-10 26
8fad87bca7ac97 Liu Hua 2014-03-27 27 vaddr = ioremap(__pfn_to_phys(pfn), PAGE_SIZE);
67742c8168ed66 Mika Westerberg 2010-05-10 28 if (!vaddr)
67742c8168ed66 Mika Westerberg 2010-05-10 29 return -ENOMEM;
67742c8168ed66 Mika Westerberg 2010-05-10 30
5d8de293c22489 Matthew Wilcox (Oracle 2022-04-29 31) csize = copy_to_iter(vaddr + offset, csize, iter);
67742c8168ed66 Mika Westerberg 2010-05-10 32
67742c8168ed66 Mika Westerberg 2010-05-10 @33 iounmap(vaddr);
:::::: The code at line 33 was first introduced by commit
:::::: 67742c8168ed66fdd6cb5dc90e06c43cdc5bba07 ARM: 6120/1: kdump: implement copy_oldmem_page()
:::::: TO: Mika Westerberg <mika.westerberg@....fi>
:::::: CC: Russell King <rmk+kernel@....linux.org.uk>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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