lkml.org 
[lkml]   [2022]   [Apr]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
Subjectarch/parisc/math-emu/driver.c:88:17: sparse: sparse: Using plain integer as NULL pointer
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: cf424ef014ac30b0da27125dd1fbdf10b0d3a520
commit: 337015573718b161891a3473d25f59273f2e626b printk: Userspace format indexing support
date: 9 months ago
config: parisc-randconfig-s031-20220425 (https://download.01.org/0day-ci/archive/20220427/202204270842.rABI2ERb-lkp@intel.com/config)
compiler: hppa-linux-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-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=337015573718b161891a3473d25f59273f2e626b
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 337015573718b161891a3473d25f59273f2e626b
# 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=parisc SHELL=/bin/bash

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/parisc/math-emu/driver.c:88:17: sparse: sparse: Using plain integer as NULL pointer
>> arch/parisc/math-emu/driver.c:88:17: sparse: sparse: Using plain integer as NULL pointer
>> arch/parisc/math-emu/driver.c:88:17: sparse: sparse: Using plain integer as NULL pointer
arch/parisc/math-emu/driver.c:90:17: sparse: sparse: Using plain integer as NULL pointer
arch/parisc/math-emu/driver.c:90:17: sparse: sparse: Using plain integer as NULL pointer
arch/parisc/math-emu/driver.c:90:17: sparse: sparse: Using plain integer as NULL pointer
arch/parisc/math-emu/driver.c:93:22: sparse: sparse: undefined identifier 'decode_fpu'

vim +88 arch/parisc/math-emu/driver.c

^1da177e4c3f41 Linus Torvalds 2005-04-16 64
^1da177e4c3f41 Linus Torvalds 2005-04-16 65 /* Handle a floating point exception. Return zero if the faulting
^1da177e4c3f41 Linus Torvalds 2005-04-16 66 instruction can be completed successfully. */
^1da177e4c3f41 Linus Torvalds 2005-04-16 67 int
^1da177e4c3f41 Linus Torvalds 2005-04-16 68 handle_fpe(struct pt_regs *regs)
^1da177e4c3f41 Linus Torvalds 2005-04-16 69 {
^1da177e4c3f41 Linus Torvalds 2005-04-16 70 extern void printbinary(unsigned long x, int nbits);
^1da177e4c3f41 Linus Torvalds 2005-04-16 71 unsigned int orig_sw, sw;
^1da177e4c3f41 Linus Torvalds 2005-04-16 72 int signalcode;
^1da177e4c3f41 Linus Torvalds 2005-04-16 73 /* need an intermediate copy of float regs because FPU emulation
^1da177e4c3f41 Linus Torvalds 2005-04-16 74 * code expects an artificial last entry which contains zero
^1da177e4c3f41 Linus Torvalds 2005-04-16 75 *
^1da177e4c3f41 Linus Torvalds 2005-04-16 76 * also, the passed in fr registers contain one word that defines
^1da177e4c3f41 Linus Torvalds 2005-04-16 77 * the fpu type. the fpu type information is constructed
^1da177e4c3f41 Linus Torvalds 2005-04-16 78 * inside the emulation code
^1da177e4c3f41 Linus Torvalds 2005-04-16 79 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 80 __u64 frcopy[36];
^1da177e4c3f41 Linus Torvalds 2005-04-16 81
^1da177e4c3f41 Linus Torvalds 2005-04-16 82 memcpy(frcopy, regs->fr, sizeof regs->fr);
^1da177e4c3f41 Linus Torvalds 2005-04-16 83 frcopy[32] = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 84
^1da177e4c3f41 Linus Torvalds 2005-04-16 85 memcpy(&orig_sw, frcopy, sizeof(orig_sw));
^1da177e4c3f41 Linus Torvalds 2005-04-16 86
^1da177e4c3f41 Linus Torvalds 2005-04-16 87 if (FPUDEBUG) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 @88 printk(KERN_DEBUG "FP VZOUICxxxxCQCQCQCQCQCRMxxTDVZOUI ->\n ");

:::::: The code at line 88 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@ppc970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@ppc970.osdl.org>

--
0-DAY CI Kernel Test Service
https://01.org/lkp

\
 
 \ /
  Last update: 2022-04-27 02:13    [W:0.024 / U:0.428 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site