From: kernel test robot <lkp@intel.com>
To: Uros Bizjak <ubizjak@gmail.com>
Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org,
x86@kernel.org, Ingo Molnar <mingo@kernel.org>,
Nadav Amit <namit@vmware.com>
Subject: [tip:x86/percpu 21/22] arch/x86/include/asm/processor.h:522:24: sparse: sparse: dereference of noderef expression
Date: Fri, 27 Oct 2023 10:01:35 +0800 [thread overview]
Message-ID: <202310270909.QBAOkiZP-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/percpu
head: 0548eb067ed664b93043e033295ca71e3e706245
commit: ed2f752e0e0a21d941ca0ee539ef3d4cd576bc5e [21/22] x86/percpu: Introduce const-qualified const_pcpu_hot to micro-optimize code generation
config: x86_64-randconfig-122-20231027 (https://download.01.org/0day-ci/archive/20231027/202310270909.QBAOkiZP-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231027/202310270909.QBAOkiZP-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/202310270909.QBAOkiZP-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
kernel/entry/common.c: note: in included file (through include/linux/sched.h, include/linux/context_tracking.h):
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
kernel/entry/common.c: note: in included file (through arch/x86/include/asm/cpufeature.h, arch/x86/include/asm/thread_info.h, include/linux/thread_info.h, ...):
>> arch/x86/include/asm/processor.h:522:24: sparse: sparse: dereference of noderef expression
kernel/entry/common.c: note: in included file (through include/linux/sched.h, include/linux/context_tracking.h):
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
kernel/entry/common.c: note: in included file (through arch/x86/include/asm/cpufeature.h, arch/x86/include/asm/thread_info.h, include/linux/thread_info.h, ...):
>> arch/x86/include/asm/processor.h:522:24: sparse: sparse: dereference of noderef expression
kernel/entry/common.c: note: in included file (through include/linux/sched.h, include/linux/context_tracking.h):
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
kernel/entry/common.c: note: in included file (through arch/x86/include/asm/cpufeature.h, arch/x86/include/asm/thread_info.h, include/linux/thread_info.h, ...):
>> arch/x86/include/asm/processor.h:522:24: sparse: sparse: dereference of noderef expression
kernel/entry/common.c: note: in included file (through include/linux/sched.h, include/linux/context_tracking.h):
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
kernel/entry/common.c: note: in included file (through arch/x86/include/asm/cpufeature.h, arch/x86/include/asm/thread_info.h, include/linux/thread_info.h, ...):
>> arch/x86/include/asm/processor.h:522:24: sparse: sparse: dereference of noderef expression
kernel/entry/common.c: note: in included file (through include/linux/sched.h, include/linux/context_tracking.h):
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
kernel/entry/common.c: note: in included file (through arch/x86/include/asm/cpufeature.h, arch/x86/include/asm/thread_info.h, include/linux/thread_info.h, ...):
>> arch/x86/include/asm/processor.h:522:24: sparse: sparse: dereference of noderef expression
kernel/entry/common.c: note: in included file (through include/linux/sched.h, include/linux/context_tracking.h):
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
arch/x86/include/asm/current.h:46:24: sparse: sparse: dereference of noderef expression
vim +522 arch/x86/include/asm/processor.h
513
514 static __always_inline unsigned long current_top_of_stack(void)
515 {
516 /*
517 * We can't read directly from tss.sp0: sp0 on x86_32 is special in
518 * and around vm86 mode and sp0 on x86_64 is special because of the
519 * entry trampoline.
520 */
521 if (IS_ENABLED(CONFIG_USE_X86_SEG_SUPPORT))
> 522 return pcpu_hot.top_of_stack;
523
524 return this_cpu_read_stable(pcpu_hot.top_of_stack);
525 }
526
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
next reply other threads:[~2023-10-27 2:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-27 2:01 kernel test robot [this message]
2023-10-27 7:46 ` [tip:x86/percpu 21/22] arch/x86/include/asm/processor.h:522:24: sparse: sparse: dereference of noderef expression Uros Bizjak
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