linux-kernel - arch/sh/kernel/traps_32.c:574:9: sparse: sparse: incorrect type in initializer (different address spaces)

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Message-ID: <202202171703.uSwiYZal-lkp@intel.com>
Date:   Thu, 17 Feb 2022 17:10:24 +0800
From:   kernel test robot <lkp@...el.com>
To:     Al Viro <viro@...iv.linux.org.uk>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Rich Felker <dalias@...c.org>
Subject: arch/sh/kernel/traps_32.c:574:9: sparse: sparse: incorrect type in
 initializer (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   f71077a4d84bbe8c7b91b7db7c4ef815755ac5e3
commit: ca42bc4b7bda7c6d68f1cc97c27fc8ff7385c4c7 sh: fix trivial misannotations
date:   5 months ago
config: sh-randconfig-s032-20220217 (https://download.01.org/0day-ci/archive/20220217/202202171703.uSwiYZal-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 11.2.0
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-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca42bc4b7bda7c6d68f1cc97c27fc8ff7385c4c7
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout ca42bc4b7bda7c6d68f1cc97c27fc8ff7385c4c7
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=sh SHELL=/bin/bash arch/sh/kernel/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>


sparse warnings: (new ones prefixed by >>)
>> arch/sh/kernel/traps_32.c:574:9: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected unsigned short const [noderef] __user *__gu_addr @@     got unsigned short * @@
   arch/sh/kernel/traps_32.c:574:9: sparse:     expected unsigned short const [noderef] __user *__gu_addr
   arch/sh/kernel/traps_32.c:574:9: sparse:     got unsigned short *
   arch/sh/kernel/traps_32.c:563:5: sparse: sparse: symbol 'is_dsp_inst' was not declared. Should it be static?

vim +574 arch/sh/kernel/traps_32.c

^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  558  
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  559  #ifdef CONFIG_SH_DSP
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  560  /*
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  561   *	SH-DSP support gerg@...pgear.com.
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  562   */
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  563  int is_dsp_inst(struct pt_regs *regs)
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  564  {
882c12c4e1a95e arch/sh/kernel/traps.c Paul Mundt     2007-05-14  565  	unsigned short inst = 0;
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  566  
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  567  	/*
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  568  	 * Safe guard if DSP mode is already enabled or we're lacking
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  569  	 * the DSP altogether.
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  570  	 */
11c1965687b0a4 arch/sh/kernel/traps.c Paul Mundt     2006-12-25  571  	if (!(current_cpu_data.flags & CPU_HAS_DSP) || (regs->sr & SR_DSP))
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  572  		return 0;
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  573  
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16 @574  	get_user(inst, ((unsigned short *) regs->pc));
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  575  
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  576  	inst &= 0xf000;
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  577  
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  578  	/* Check for any type of DSP or support instruction */
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  579  	if ((inst == 0xf000) || (inst == 0x4000))
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  580  		return 1;
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  581  
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  582  	return 0;
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  583  }
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  584  #else
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  585  #define is_dsp_inst(regs)	(0)
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  586  #endif /* CONFIG_SH_DSP */
^1da177e4c3f41 arch/sh/kernel/traps.c Linus Torvalds 2005-04-16  587  

:::::: The code at line 574 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>

---
0-DAY CI Kernel Test Service, Intel Corporation
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