Re: [PATCH resend v1 1/7] clocksource/drivers/timer-probe: Create a platform_device before the framework is initialized

kernel test robot
2026-03-28T06:56:18Z

Hi Daniel,

kernel test robot noticed the following build warnings:

[auto build test WARNING on tip/timers/core]
[also build test WARNING on rockchip/for-next arnd-asm-generic/master linus/master v7.0-rc5 next-20260327]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url: https://github.com/intel-lab-lkp/linux/commits/Daniel-Lezcano/clocksource-drivers-timer-probe-Create-a-platform_device-before-the-framework-is-initialized/20260328-080154
base: tip/timers/core
patch link: https://lore.kernel.org/r/20260327180600.8150-2-daniel.lezcano%40kernel.org
patch subject: [PATCH resend v1 1/7] clocksource/drivers/timer-probe: Create a platform_device before the framework is initialized
config: x86_64-randconfig-013-20260328 (https://download.01.org/0day-ci/archive/20260328/202603281427.LUamgyCn-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260328/202603281427.LUamgyCn-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/202603281427.LUamgyCn-lkp@intel.com/

All warnings (new ones prefixed by >>):

In file included from arch/x86/include/asm/current.h:11,
from arch/x86/include/asm/processor.h:17,
from arch/x86/include/asm/timex.h:5,
from include/linux/timex.h:67,
from include/linux/time32.h:13,
from include/linux/time.h:60,
from arch/x86/entry/vdso/vdso32/../common/vclock_gettime.c:11,
from arch/x86/entry/vdso/vdso32/vclock_gettime.c:1:
arch/x86/include/asm/tlbflush.h: In function 'cpu_tlbstate_update_lam':
>> arch/x86/include/asm/tlbflush.h:468:46: warning: right shift count >= width of type [-Wshift-count-overflow]
468 | this_cpu_write(cpu_tlbstate.lam, lam >> X86_CR3_LAM_U57_BIT);
| ^~
arch/x86/include/asm/percpu.h:145:69: note: in definition of macro '__raw_cpu_write'
145 | *(qual __my_cpu_type(pcp) * __force)__my_cpu_ptr(&(pcp)) = (val); \
| ^~~
include/linux/percpu-defs.h:369:25: note: in expansion of macro 'this_cpu_write_1'
369 | case 1: stem##1(variable, __VA_ARGS__);break; \
| ^~~~
include/linux/percpu-defs.h:500:41: note: in expansion of macro '__pcpu_size_call'
500 | #define this_cpu_write(pcp, val) __pcpu_size_call(this_cpu_write_, pcp, val)
| ^~~~~~~~~~~~~~~~
arch/x86/include/asm/tlbflush.h:468:9: note: in expansion of macro 'this_cpu_write'
468 | this_cpu_write(cpu_tlbstate.lam, lam >> X86_CR3_LAM_U57_BIT);
| ^~~~~~~~~~~~~~
>> arch/x86/include/asm/tlbflush.h:468:46: warning: right shift count >= width of type [-Wshift-count-overflow]
468 | this_cpu_write(cpu_tlbstate.lam, lam >> X86_CR3_LAM_U57_BIT);
| ^~
arch/x86/include/asm/percpu.h:145:69: note: in definition of macro '__raw_cpu_write'
145 | *(qual __my_cpu_type(pcp) * __force)__my_cpu_ptr(&(pcp)) = (val); \
| ^~~
include/linux/percpu-defs.h:370:25: note: in expansion of macro 'this_cpu_write_2'
370 | case 2: stem##2(variable, __VA_ARGS__);break; \
| ^~~~
include/linux/percpu-defs.h:500:41: note: in expansion of macro '__pcpu_size_call'
500 | #define this_cpu_write(pcp, val) __pcpu_size_call(this_cpu_write_, pcp, val)
| ^~~~~~~~~~~~~~~~
arch/x86/include/asm/tlbflush.h:468:9: note: in expansion of macro 'this_cpu_write'
468 | this_cpu_write(cpu_tlbstate.lam, lam >> X86_CR3_LAM_U57_BIT);
| ^~~~~~~~~~~~~~
>> arch/x86/include/asm/tlbflush.h:468:46: warning: right shift count >= width of type [-Wshift-count-overflow]
468 | this_cpu_write(cpu_tlbstate.lam, lam >> X86_CR3_LAM_U57_BIT);
| ^~
arch/x86/include/asm/percpu.h:145:69: note: in definition of macro '__raw_cpu_write'
145 | *(qual __my_cpu_type(pcp) * __force)__my_cpu_ptr(&(pcp)) = (val); \
| ^~~
include/linux/percpu-defs.h:371:25: note: in expansion of macro 'this_cpu_write_4'
371 | case 4: stem##4(variable, __VA_ARGS__);break; \
| ^~~~
include/linux/percpu-defs.h:500:41: note: in expansion of macro '__pcpu_size_call'
500 | #define this_cpu_write(pcp, val) __pcpu_size_call(this_cpu_write_, pcp, val)
| ^~~~~~~~~~~~~~~~
arch/x86/include/asm/tlbflush.h:468:9: note: in expansion of macro 'this_cpu_write'
468 | this_cpu_write(cpu_tlbstate.lam, lam >> X86_CR3_LAM_U57_BIT);
| ^~~~~~~~~~~~~~
In file included from arch/x86/include/asm/percpu.h:598:
>> arch/x86/include/asm/tlbflush.h:468:46: warning: right shift count >= width of type [-Wshift-count-overflow]
468 | this_cpu_write(cpu_tlbstate.lam, lam >> X86_CR3_LAM_U57_BIT);
| ^~
include/asm-generic/percpu.h:87:33: note: in definition of macro 'raw_cpu_generic_to_op'
87 | *raw_cpu_ptr(&(pcp)) op val; \
| ^~~
include/asm-generic/percpu.h:412:41: note: in expansion of macro 'this_cpu_generic_to_op'
412 | #define this_cpu_write_8(pcp, val) this_cpu_generic_to_op(pcp, val, =)
| ^~~~~~~~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:372:25: note: in expansion of macro 'this_cpu_write_8'
372 | case 8: stem##8(variable, __VA_ARGS__);break; \
| ^~~~
include/linux/percpu-defs.h:500:41: note: in expansion of macro '__pcpu_size_call'
500 | #define this_cpu_write(pcp, val) __pcpu_size_call(this_cpu_write_, pcp, val)
| ^~~~~~~~~~~~~~~~
arch/x86/include/asm/tlbflush.h:468:9: note: in expansion of macro 'this_cpu_write'
468 | this_cpu_write(cpu_tlbstate.lam, lam >> X86_CR3_LAM_U57_BIT);
| ^~~~~~~~~~~~~~
In file included from include/linux/kasan.h:38,
from include/linux/slab.h:264,
from include/linux/fs.h:45,
from include/linux/compat.h:17,
from arch/x86/include/asm/ia32.h:7,
from arch/x86/include/asm/elf.h:10,
from include/linux/elf.h:6,
from include/linux/module.h:20,
from include/linux/device/driver.h:21,
from include/linux/device.h:32,
from include/linux/platform_device.h:13,
from include/linux/clocksource.h:21,
from include/clocksource/hyperv_timer.h:16,
from arch/x86/include/asm/vdso/gettimeofday.h:20,
from include/vdso/datapage.h:196,
from arch/x86/include/uapi/../../../../lib/vdso/gettimeofday.c:6,
from arch/x86/entry/vdso/vdso32/../common/vclock_gettime.c:16:
include/linux/pgtable.h: At top level:
include/linux/pgtable.h:2204:2: error: #error Missing MAX_POSSIBLE_PHYSMEM_BITS definition
2204 | #error Missing MAX_POSSIBLE_PHYSMEM_BITS definition
| ^~~~~
arch/x86/include/asm/ia32.h:28:8: error: redefinition of 'struct stat64'
28 | struct stat64 {
| ^~~~~~
In file included from include/linux/stat.h:6,
from include/linux/sysfs.h:22,
from include/linux/kobject.h:20,
from include/linux/of.h:18,
from include/linux/clocksource.h:19:
arch/x86/include/uapi/asm/stat.h:42:8: note: originally defined here
42 | struct stat64 {
| ^~~~~~

vim +468 arch/x86/include/asm/tlbflush.h

82721d8b25d76c Kiryl Shutsemau 2023-03-12 465
ec225f8c255fd0 Yosry Ahmed 2024-07-02 466 static inline void cpu_tlbstate_update_lam(unsigned long lam, u64 untag_mask)
82721d8b25d76c Kiryl Shutsemau 2023-03-12 467 {
ec225f8c255fd0 Yosry Ahmed 2024-07-02 @468 this_cpu_write(cpu_tlbstate.lam, lam >> X86_CR3_LAM_U57_BIT);
ec225f8c255fd0 Yosry Ahmed 2024-07-02 469 this_cpu_write(tlbstate_untag_mask, untag_mask);
82721d8b25d76c Kiryl Shutsemau 2023-03-12 470 }
82721d8b25d76c Kiryl Shutsemau 2023-03-12 471

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