From: kernel test robot <lkp@intel.com>
To: Al Viro <viro@zeniv.linux.org.uk>
Cc: oe-kbuild-all@lists.linux.dev, linux-fsdevel@vger.kernel.org
Subject: [viro-vfs:headers.unaligned 2/2] include/linux/unaligned.h:119:16: sparse: sparse: cast truncates bits from constant value (aa01a0 becomes a0)
Date: Thu, 14 Dec 2023 09:25:30 +0800 [thread overview]
Message-ID: <202312140955.cqLj4SLn-lkp@intel.com> (raw)
Hi Al,
FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git headers.unaligned
head: 959598f725aa7721a4bad53c2e997c7255ff32dc
commit: 959598f725aa7721a4bad53c2e997c7255ff32dc [2/2] move asm/unaligned.h to linux/unaligned.h
config: x86_64-randconfig-123-20231214 (https://download.01.org/0day-ci/archive/20231214/202312140955.cqLj4SLn-lkp@intel.com/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231214/202312140955.cqLj4SLn-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202312140955.cqLj4SLn-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
drivers/input/touchscreen/hynitron_cstxxx.c: note: in included file:
>> include/linux/unaligned.h:119:16: sparse: sparse: cast truncates bits from constant value (aa01a0 becomes a0)
>> include/linux/unaligned.h:120:20: sparse: sparse: cast truncates bits from constant value (aa01 becomes 1)
>> include/linux/unaligned.h:119:16: sparse: sparse: cast truncates bits from constant value (ab00d0 becomes d0)
>> include/linux/unaligned.h:120:20: sparse: sparse: cast truncates bits from constant value (ab00 becomes 0)
vim +119 include/linux/unaligned.h
803f4e1eab7a89 include/asm-generic/unaligned.h Arnd Bergmann 2021-05-08 116
803f4e1eab7a89 include/asm-generic/unaligned.h Arnd Bergmann 2021-05-08 117 static inline void __put_unaligned_le24(const u32 val, u8 *p)
803f4e1eab7a89 include/asm-generic/unaligned.h Arnd Bergmann 2021-05-08 118 {
803f4e1eab7a89 include/asm-generic/unaligned.h Arnd Bergmann 2021-05-08 @119 *p++ = val;
803f4e1eab7a89 include/asm-generic/unaligned.h Arnd Bergmann 2021-05-08 @120 *p++ = val >> 8;
803f4e1eab7a89 include/asm-generic/unaligned.h Arnd Bergmann 2021-05-08 121 *p++ = val >> 16;
803f4e1eab7a89 include/asm-generic/unaligned.h Arnd Bergmann 2021-05-08 122 }
803f4e1eab7a89 include/asm-generic/unaligned.h Arnd Bergmann 2021-05-08 123
:::::: The code at line 119 was first introduced by commit
:::::: 803f4e1eab7a8938ba3a3c30dd4eb5e9eeef5e63 asm-generic: simplify asm/unaligned.h
:::::: TO: Arnd Bergmann <arnd@arndb.de>
:::::: CC: Arnd Bergmann <arnd@arndb.de>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
next reply other threads:[~2023-12-14 1:27 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-14 1:25 kernel test robot [this message]
2023-12-14 1:59 ` [viro-vfs:headers.unaligned 2/2] include/linux/unaligned.h:119:16: sparse: sparse: cast truncates bits from constant value (aa01a0 becomes a0) Al Viro
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