tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 3aaf0a27ffc29b19a62314edd684b9bc6346f9a8 commit: e5fc436f06eef54ef512ea55a9db8eb9f2e76959 sparse: use static inline for __chk_{user,io}_ptr() date: 5 months ago config: arm-randconfig-s032-20210203 (attached as .config) compiler: arm-linux-gnueabi-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: v0.6.3-215-g0fb77bb6-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e5fc436f06eef54ef512ea55a9db8eb9f2e76959 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout e5fc436f06eef54ef512ea55a9db8eb9f2e76959 # 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=arm
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <l...@intel.com>
"sparse warnings: (new ones prefixed by >>)"
>> arch/arm/mm/alignment.c:775:25: sparse: sparse: incorrect type in argument 1
>> (different address spaces) @@ expected void const volatile [noderef]
>> __user *ptr @@ got unsigned int [usertype] *ip @@
arch/arm/mm/alignment.c:775:25: sparse: expected void const volatile
[noderef] __user *ptr
arch/arm/mm/alignment.c:775:25: sparse: got unsigned int [usertype] *ip
>> arch/arm/mm/alignment.c:790:25: sparse: sparse: incorrect type in argument 1
>> (different address spaces) @@ expected void const volatile [noderef]
>> __user *ptr @@ got unsigned short [usertype] *ip @@
arch/arm/mm/alignment.c:790:25: sparse: expected void const volatile
[noderef] __user *ptr
arch/arm/mm/alignment.c:790:25: sparse: got unsigned short [usertype] *ip
vim +775 arch/arm/mm/alignment.c
c2860d43f5dfab George G. Davis 2009-06-04 768
1bb9fb0a147f9d Russell King 2019-09-06 769 static int
alignment_get_arm(struct pt_regs *regs, u32 *ip, u32 *inst)
67e15fa5b487ad Russell King 2019-08-31 770 {
67e15fa5b487ad Russell King 2019-08-31 771 u32 instr = 0;
67e15fa5b487ad Russell King 2019-08-31 772 int fault;
67e15fa5b487ad Russell King 2019-08-31 773
67e15fa5b487ad Russell King 2019-08-31 774 if (user_mode(regs))
67e15fa5b487ad Russell King 2019-08-31 @775 fault =
get_user(instr, ip);
67e15fa5b487ad Russell King 2019-08-31 776 else
25f12ae45fc193 Christoph Hellwig 2020-06-17 777 fault =
get_kernel_nofault(instr, ip);
67e15fa5b487ad Russell King 2019-08-31 778
67e15fa5b487ad Russell King 2019-08-31 779 *inst =
__mem_to_opcode_arm(instr);
67e15fa5b487ad Russell King 2019-08-31 780
67e15fa5b487ad Russell King 2019-08-31 781 return fault;
67e15fa5b487ad Russell King 2019-08-31 782 }
67e15fa5b487ad Russell King 2019-08-31 783
67e15fa5b487ad Russell King 2019-08-31 784 static int
alignment_get_thumb(struct pt_regs *regs, u16 *ip, u16 *inst)
67e15fa5b487ad Russell King 2019-08-31 785 {
67e15fa5b487ad Russell King 2019-08-31 786 u16 instr = 0;
67e15fa5b487ad Russell King 2019-08-31 787 int fault;
67e15fa5b487ad Russell King 2019-08-31 788
67e15fa5b487ad Russell King 2019-08-31 789 if (user_mode(regs))
67e15fa5b487ad Russell King 2019-08-31 @790 fault =
get_user(instr, ip);
67e15fa5b487ad Russell King 2019-08-31 791 else
25f12ae45fc193 Christoph Hellwig 2020-06-17 792 fault =
get_kernel_nofault(instr, ip);
67e15fa5b487ad Russell King 2019-08-31 793
67e15fa5b487ad Russell King 2019-08-31 794 *inst =
__mem_to_opcode_thumb16(instr);
67e15fa5b487ad Russell King 2019-08-31 795
67e15fa5b487ad Russell King 2019-08-31 796 return fault;
67e15fa5b487ad Russell King 2019-08-31 797 }
67e15fa5b487ad Russell King 2019-08-31 798
:::::: The code at line 775 was first introduced by commit
:::::: 67e15fa5b487adb9b78a92789eeff2d6ec8f5cee ARM: mm: fix alignment handler
faults under memory pressure
:::::: TO: Russell King <rmk+ker...@armlinux.org.uk>
:::::: CC: Russell King <rmk+ker...@armlinux.org.uk>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
Description: application/gzip
