2024-03-02 08:20:14

by kernel test robot

Subject: [tip:x86/boot 9/9] arch/x86/include/asm/desc.h:54:16: sparse: sparse: incorrect type in initializer (different address spaces)

tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/boot
head: 721f791ce1cddfa5f2bf524ac14741bfa0f72697
commit: 11e36b0f7c2150a6453872b79555767b43c846d0 [9/9] x86/boot/64: Load the final kernel GDT during early boot directly, remove startup_gdt[]
config: x86_64-randconfig-121-20240301 (https://download.01.org/0day-ci/archive/20240302/[email protected]/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240302/[email protected]/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 <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

sparse warnings: (new ones prefixed by >>)


vim +54 arch/x86/include/asm/desc.h

a939098afcfa5f include/asm-x86/desc.h Glauber Costa 2008-05-28 50
69218e47994da6 arch/x86/include/asm/desc.h Thomas Garnier 2017-03-14 51 /* Provide the original GDT */
69218e47994da6 arch/x86/include/asm/desc.h Thomas Garnier 2017-03-14 52 static inline struct desc_struct *get_cpu_gdt_rw(unsigned int cpu)
a939098afcfa5f include/asm-x86/desc.h Glauber Costa 2008-05-28 53 {
a939098afcfa5f include/asm-x86/desc.h Glauber Costa 2008-05-28 @54 return per_cpu(gdt_page, cpu).gdt;
a939098afcfa5f include/asm-x86/desc.h Glauber Costa 2008-05-28 55 }
a939098afcfa5f include/asm-x86/desc.h Glauber Costa 2008-05-28 56

:::::: The code at line 54 was first introduced by commit
:::::: a939098afcfa5f81d3474782ec15c6d114e57763 x86: move x86_64 gdt closer to i386

:::::: TO: Glauber Costa <[email protected]>
:::::: CC: Ingo Molnar <[email protected]>

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

2024-03-02 13:09:29

by Yujie Liu

Subject: Re: [tip:x86/boot 9/9] arch/x86/include/asm/desc.h:54:16: sparse: sparse: incorrect type in initializer (different address spaces)

On Sat, Mar 02, 2024 at 04:19:58PM +0800, kernel test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/boot
> head: 721f791ce1cddfa5f2bf524ac14741bfa0f72697
> commit: 11e36b0f7c2150a6453872b79555767b43c846d0 [9/9] x86/boot/64: Load the final kernel GDT during early boot directly, remove startup_gdt[]
> config: x86_64-randconfig-121-20240301 (https://download.01.org/0day-ci/archive/20240302/[email protected]/config)
> compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240302/[email protected]/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 <[email protected]>
> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
>
> sparse warnings: (new ones prefixed by >>)

Sorry for the empty warning here. The actual sparse warning is:

arch/x86/include/asm/desc.h:54:16: sparse: sparse: incorrect type in initializer (different address spaces)
arch/x86/include/asm/desc.h:54:16: sparse: expected void const [noderef] __percpu *__vpp_verify
arch/x86/include/asm/desc.h:54:16: sparse: got struct gdt_page *

>
>
> vim +54 arch/x86/include/asm/desc.h
>
> a939098afcfa5f include/asm-x86/desc.h Glauber Costa 2008-05-28 50
> 69218e47994da6 arch/x86/include/asm/desc.h Thomas Garnier 2017-03-14 51 /* Provide the original GDT */
> 69218e47994da6 arch/x86/include/asm/desc.h Thomas Garnier 2017-03-14 52 static inline struct desc_struct *get_cpu_gdt_rw(unsigned int cpu)
> a939098afcfa5f include/asm-x86/desc.h Glauber Costa 2008-05-28 53 {
> a939098afcfa5f include/asm-x86/desc.h Glauber Costa 2008-05-28 @54 return per_cpu(gdt_page, cpu).gdt;
> a939098afcfa5f include/asm-x86/desc.h Glauber Costa 2008-05-28 55 }
> a939098afcfa5f include/asm-x86/desc.h Glauber Costa 2008-05-28 56
>
> :::::: The code at line 54 was first introduced by commit
> :::::: a939098afcfa5f81d3474782ec15c6d114e57763 x86: move x86_64 gdt closer to i386
>
> :::::: TO: Glauber Costa <[email protected]>
> :::::: CC: Ingo Molnar <[email protected]>
>
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki
>