* [peterz-queue:locking/core 17/21] arch/x86/include/asm/cpufeatures.h:228:68: error: "/*" within comment
@ 2026-08-05 1:22 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-08-05 1:22 UTC (permalink / raw)
To: Peter Zijlstra; +Cc: oe-kbuild-all, Dmitry Ilvokhin
tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git locking/core
head: 098a858bcdad1b6327e23274626c9fb36c5932fc
commit: 6cbc4e025e8c31cdc861ad9f2f53dc0eb290d586 [17/21] x86/paravirt: Use static_call() for the paravirt spinlock ops
config: i386-allmodconfig (https://download.01.org/0day-ci/archive/20260805/202608050957.enB62Jir-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/20260805/202608050957.enB62Jir-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/202608050957.enB62Jir-lkp@intel.com/
All error/warnings (new ones prefixed by >>):
In file included from arch/x86/include/asm/arch_hweight.h:5,
from arch/x86/include/asm/bitops.h:419,
from include/linux/bitops.h:67,
from include/linux/log2.h:12,
from kernel/bounds.c:14:
>> arch/x86/include/asm/cpufeatures.h:228:68: warning: "/*" within comment [-Wcomment]
228 | /* free: was #define X86_FEATURE_PVUNLOCK ( 8*32+20) /* PV unlock function */
--
In file included from arch/x86/include/asm/arch_hweight.h:5,
from arch/x86/include/asm/bitops.h:419,
from include/linux/bitops.h:67,
from include/linux/log2.h:12,
from arch/x86/include/asm/div64.h:8,
from include/linux/math.h:6,
from include/linux/math64.h:6,
from include/linux/time.h:6,
from include/linux/stat.h:19,
from include/linux/module.h:13,
from lib/test_bitops.c:10:
>> arch/x86/include/asm/cpufeatures.h:228:68: error: "/*" within comment [-Werror=comment]
228 | /* free: was #define X86_FEATURE_PVUNLOCK ( 8*32+20) /* PV unlock function */
cc1: all warnings being treated as errors
--
In file included from arch/x86/include/asm/arch_hweight.h:5,
from arch/x86/include/asm/bitops.h:419,
from include/linux/bitops.h:67,
from include/linux/kernel.h:23,
from drivers/input/joystick/a3d.c:10:
>> arch/x86/include/asm/cpufeatures.h:228:68: warning: "/*" within comment [-Wcomment]
228 | /* free: was #define X86_FEATURE_PVUNLOCK ( 8*32+20) /* PV unlock function */
drivers/input/joystick/a3d.c: In function 'a3d_connect':
drivers/input/joystick/a3d.c:287:51: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
287 | snprintf(a3d->phys, sizeof(a3d->phys), "%s/input0", gameport->phys);
| ^~~~~~~
drivers/input/joystick/a3d.c:287:9: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
287 | snprintf(a3d->phys, sizeof(a3d->phys), "%s/input0", gameport->phys);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
In file included from arch/x86/include/asm/arch_hweight.h:5,
from arch/x86/include/asm/bitops.h:419,
from include/linux/bitops.h:67,
from include/linux/log2.h:12,
from arch/x86/include/asm/div64.h:8,
from include/linux/math.h:6,
from include/linux/delay.h:12,
from drivers/input/joystick/adi.c:10:
>> arch/x86/include/asm/cpufeatures.h:228:68: warning: "/*" within comment [-Wcomment]
228 | /* free: was #define X86_FEATURE_PVUNLOCK ( 8*32+20) /* PV unlock function */
drivers/input/joystick/adi.c: In function 'adi_init_input':
drivers/input/joystick/adi.c:395:60: warning: '%s' directive output may be truncated writing up to 63 bytes into a region of size 55 [-Wformat-truncation=]
395 | snprintf(adi->name, ADI_MAX_NAME_LENGTH, "Logitech %s [%s]", buf, adi->cname);
| ^~ ~~~
drivers/input/joystick/adi.c:395:9: note: 'snprintf' output between 13 and 91 bytes into a destination of size 64
395 | snprintf(adi->name, ADI_MAX_NAME_LENGTH, "Logitech %s [%s]", buf, adi->cname);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
In file included from arch/x86/include/asm/arch_hweight.h:5,
from arch/x86/include/asm/bitops.h:419,
from include/linux/bitops.h:67,
from include/linux/log2.h:12,
from arch/x86/include/asm/div64.h:8,
from include/linux/math.h:6,
from include/linux/delay.h:12,
from drivers/input/joystick/analog.c:10:
>> arch/x86/include/asm/cpufeatures.h:228:68: warning: "/*" within comment [-Wcomment]
228 | /* free: was #define X86_FEATURE_PVUNLOCK ( 8*32+20) /* PV unlock function */
drivers/input/joystick/analog.c: In function 'analog_init_device':
drivers/input/joystick/analog.c:371:21: warning: '/input' directive output may be truncated writing 6 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
371 | "%s/input%d", port->gameport->phys, index);
| ^~~~~~
drivers/input/joystick/analog.c:371:18: note: directive argument in the range [0, 1]
371 | "%s/input%d", port->gameport->phys, index);
| ^~~~~~~~~~~~
drivers/input/joystick/analog.c:370:9: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
370 | snprintf(analog->phys, sizeof(analog->phys),
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
371 | "%s/input%d", port->gameport->phys, index);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
In file included from arch/x86/include/asm/arch_hweight.h:5,
from arch/x86/include/asm/bitops.h:419,
from include/linux/bitops.h:67,
from include/linux/kernel.h:23,
from drivers/input/joystick/cobra.c:10:
>> arch/x86/include/asm/cpufeatures.h:228:68: warning: "/*" within comment [-Wcomment]
228 | /* free: was #define X86_FEATURE_PVUNLOCK ( 8*32+20) /* PV unlock function */
drivers/input/joystick/cobra.c: In function 'cobra_connect':
drivers/input/joystick/cobra.c:184:29: warning: '/input' directive output may be truncated writing 6 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
184 | "%s/input%d", gameport->phys, i);
| ^~~~~~
drivers/input/joystick/cobra.c:184:26: note: directive argument in the range [0, 1]
184 | "%s/input%d", gameport->phys, i);
| ^~~~~~~~~~~~
drivers/input/joystick/cobra.c:183:17: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
183 | snprintf(cobra->phys[i], sizeof(cobra->phys[i]),
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
184 | "%s/input%d", gameport->phys, i);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
In file included from arch/x86/include/asm/arch_hweight.h:5,
from arch/x86/include/asm/bitops.h:419,
from include/linux/bitops.h:67,
from include/linux/log2.h:12,
from arch/x86/include/asm/div64.h:8,
from include/linux/math.h:6,
from include/linux/delay.h:12,
from drivers/input/joystick/gf2k.c:10:
>> arch/x86/include/asm/cpufeatures.h:228:68: warning: "/*" within comment [-Wcomment]
228 | /* free: was #define X86_FEATURE_PVUNLOCK ( 8*32+20) /* PV unlock function */
drivers/input/joystick/gf2k.c: In function 'gf2k_connect':
drivers/input/joystick/gf2k.c:281:53: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
281 | snprintf(gf2k->phys, sizeof(gf2k->phys), "%s/input0", gameport->phys);
| ^~~~~~~
drivers/input/joystick/gf2k.c:281:9: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
281 | snprintf(gf2k->phys, sizeof(gf2k->phys), "%s/input0", gameport->phys);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
In file included from arch/x86/include/asm/arch_hweight.h:5,
from arch/x86/include/asm/bitops.h:419,
from include/linux/bitops.h:67,
from include/linux/kernel.h:23,
from drivers/input/joystick/grip.c:10:
>> arch/x86/include/asm/cpufeatures.h:228:68: warning: "/*" within comment [-Wcomment]
228 | /* free: was #define X86_FEATURE_PVUNLOCK ( 8*32+20) /* PV unlock function */
drivers/input/joystick/grip.c: In function 'grip_connect':
drivers/input/joystick/grip.c:337:29: warning: '/input' directive output may be truncated writing 6 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
337 | "%s/input%d", gameport->phys, i);
| ^~~~~~
drivers/input/joystick/grip.c:337:26: note: directive argument in the range [0, 1]
337 | "%s/input%d", gameport->phys, i);
| ^~~~~~~~~~~~
drivers/input/joystick/grip.c:336:17: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
336 | snprintf(grip->phys[i], sizeof(grip->phys[i]),
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
337 | "%s/input%d", gameport->phys, i);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
In file included from arch/x86/include/asm/arch_hweight.h:5,
from arch/x86/include/asm/bitops.h:419,
from include/linux/bitops.h:67,
from include/linux/kernel.h:23,
from drivers/input/joystick/guillemot.c:10:
>> arch/x86/include/asm/cpufeatures.h:228:68: warning: "/*" within comment [-Wcomment]
228 | /* free: was #define X86_FEATURE_PVUNLOCK ( 8*32+20) /* PV unlock function */
drivers/input/joystick/guillemot.c: In function 'guillemot_connect':
drivers/input/joystick/guillemot.c:203:63: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
203 | snprintf(guillemot->phys, sizeof(guillemot->phys), "%s/input0", gameport->phys);
| ^~~~~~~
drivers/input/joystick/guillemot.c:203:9: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
203 | snprintf(guillemot->phys, sizeof(guillemot->phys), "%s/input0", gameport->phys);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
In file included from arch/x86/include/asm/arch_hweight.h:5,
from arch/x86/include/asm/bitops.h:419,
from include/linux/bitops.h:67,
from include/linux/kernel.h:23,
from drivers/input/joystick/interact.c:13:
>> arch/x86/include/asm/cpufeatures.h:228:68: warning: "/*" within comment [-Wcomment]
228 | /* free: was #define X86_FEATURE_PVUNLOCK ( 8*32+20) /* PV unlock function */
drivers/input/joystick/interact.c: In function 'interact_connect':
drivers/input/joystick/interact.c:232:61: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
232 | snprintf(interact->phys, sizeof(interact->phys), "%s/input0", gameport->phys);
| ^~~~~~~
drivers/input/joystick/interact.c:232:9: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
232 | snprintf(interact->phys, sizeof(interact->phys), "%s/input0", gameport->phys);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
In file included from arch/x86/include/asm/arch_hweight.h:5,
from arch/x86/include/asm/bitops.h:419,
from include/linux/bitops.h:67,
from include/linux/kernel.h:23,
from drivers/input/joystick/magellan.c:10:
>> arch/x86/include/asm/cpufeatures.h:228:68: warning: "/*" within comment [-Wcomment]
228 | /* free: was #define X86_FEATURE_PVUNLOCK ( 8*32+20) /* PV unlock function */
drivers/input/joystick/magellan.c: In function 'magellan_connect':
drivers/input/joystick/magellan.c:141:61: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
141 | snprintf(magellan->phys, sizeof(magellan->phys), "%s/input0", serio->phys);
| ^~~~~~~
drivers/input/joystick/magellan.c:141:9: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
141 | snprintf(magellan->phys, sizeof(magellan->phys), "%s/input0", serio->phys);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
..
vim +228 arch/x86/include/asm/cpufeatures.h
222
223 #define X86_FEATURE_VMMCALL ( 8*32+15) /* "vmmcall" Prefer VMMCALL to VMCALL */
224 #define X86_FEATURE_XENPV ( 8*32+16) /* Xen paravirtual guest */
225 #define X86_FEATURE_EPT_AD ( 8*32+17) /* "ept_ad" Intel Extended Page Table access-dirty bit */
226 #define X86_FEATURE_VMCALL ( 8*32+18) /* Hypervisor supports the VMCALL instruction */
227 #define X86_FEATURE_VMW_VMMCALL ( 8*32+19) /* VMware prefers VMMCALL hypercall instruction */
> 228 /* free: was #define X86_FEATURE_PVUNLOCK ( 8*32+20) /* PV unlock function */
229 #define X86_FEATURE_VCPUPREEMPT ( 8*32+21) /* PV vcpu_is_preempted function */
230 #define X86_FEATURE_TDX_GUEST ( 8*32+22) /* "tdx_guest" Intel Trust Domain Extensions Guest */
231
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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