From: kernel test robot <lkp@intel.com>
To: Will Deacon <will@kernel.org>
Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org
Subject: arch/arm64/kernel/efi.c:88:21: sparse: sparse: cast to non-scalar
Date: Tue, 7 Jul 2020 02:27:11 +0800 [thread overview]
Message-ID: <202007070205.1i4bao5c%lkp@intel.com> (raw)
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: dcb7fd82c75ee2d6e6f9d8cc71c52519ed52e258
commit: dee081bf8f824cabeb7c7495367d5dad0a444eb1 READ_ONCE: Drop pointer qualifiers when reading from scalar types
date: 3 months ago
config: arm64-randconfig-s032-20200706 (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
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: v0.6.2-14-g8fce3d7a-dirty
git checkout dee081bf8f824cabeb7c7495367d5dad0a444eb1
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
sparse warnings: (new ones prefixed by >>)
>> arch/arm64/kernel/efi.c:88:21: sparse: sparse: cast to non-scalar
>> arch/arm64/kernel/efi.c:88:21: sparse: sparse: cast from non-scalar
vim +88 arch/arm64/kernel/efi.c
f7d92489426579 Ard Biesheuvel 2015-11-30 84
8b1e0f81fb6fcf Anshuman Khandual 2019-07-11 85 static int __init set_permissions(pte_t *ptep, unsigned long addr, void *data)
bd264d046aad25 Ard Biesheuvel 2016-06-29 86 {
bd264d046aad25 Ard Biesheuvel 2016-06-29 87 efi_memory_desc_t *md = data;
20a004e7b017cc Will Deacon 2018-02-15 @88 pte_t pte = READ_ONCE(*ptep);
bd264d046aad25 Ard Biesheuvel 2016-06-29 89
bd264d046aad25 Ard Biesheuvel 2016-06-29 90 if (md->attribute & EFI_MEMORY_RO)
bd264d046aad25 Ard Biesheuvel 2016-06-29 91 pte = set_pte_bit(pte, __pgprot(PTE_RDONLY));
bd264d046aad25 Ard Biesheuvel 2016-06-29 92 if (md->attribute & EFI_MEMORY_XP)
bd264d046aad25 Ard Biesheuvel 2016-06-29 93 pte = set_pte_bit(pte, __pgprot(PTE_PXN));
bd264d046aad25 Ard Biesheuvel 2016-06-29 94 set_pte(ptep, pte);
bd264d046aad25 Ard Biesheuvel 2016-06-29 95 return 0;
bd264d046aad25 Ard Biesheuvel 2016-06-29 96 }
bd264d046aad25 Ard Biesheuvel 2016-06-29 97
:::::: The code at line 88 was first introduced by commit
:::::: 20a004e7b017cce282a46ac5d02c2b9c6b9bb1fa arm64: mm: Use READ_ONCE/WRITE_ONCE when accessing page tables
:::::: TO: Will Deacon <will.deacon@arm.com>
:::::: CC: Catalin Marinas <catalin.marinas@arm.com>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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reply other threads:[~2020-07-06 19:00 UTC|newest]
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