* Re: [PATCH 4/4] s390/maccess: Remove spinlock from __s390_kernel_write()
[not found] <20261026120329.1792436-5-hca@linux.ibm.com>
@ 2026-10-27 10:09 ` kernel test robot
2026-10-27 10:09 ` kernel test robot
1 sibling, 0 replies; 2+ messages in thread
From: kernel test robot @ 2026-10-27 10:09 UTC (permalink / raw)
To: Heiko Carstens, Alexander Gordeev, Sven Schnelle, Vasily Gorbik,
Christian Borntraeger, Ilya Leoshkevich
Cc: llvm, oe-kbuild-all, linux-kernel, linux-s390
Hi Heiko,
kernel test robot noticed the following build errors:
[auto build test ERROR on s390/features]
[also build test ERROR on trace/for-next bpf-next/master bpf/master linus/master v7.3 next-20261026]
[cannot apply to bpf-next/net]
[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/Heiko-Carstens/s390-jump_label-Serialize-text-patching-with-text_mutex/20261026-130326
base: https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git features
patch link: https://lore.kernel.org/r/20261026120329.1792436-5-hca%40linux.ibm.com
patch subject: [PATCH 4/4] s390/maccess: Remove spinlock from __s390_kernel_write()
config: s390-allnoconfig (https://download.01.org/0day-ci/archive/20261027/202610271725.YBK6zlkf-lkp@intel.com/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 186e70f4e6a1521991d2340d3d49b23b1beff11f)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261027/202610271725.YBK6zlkf-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/202610271725.YBK6zlkf-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from arch/s390/mm/maccess.c:9:
>> include/linux/text-patching.h:10:9: error: call to undeclared library function 'memcpy' with type 'void *(void *, const void *, __size_t)' (aka 'void *(void *, const void *, unsigned long)'); ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
10 | return memcpy(dst, src, len);
| ^
include/linux/text-patching.h:10:9: note: include the header <string.h> or explicitly provide a declaration for 'memcpy'
In file included from arch/s390/mm/maccess.c:15:
In file included from include/linux/cpu.h:17:
In file included from include/linux/node.h:18:
In file included from include/linux/device.h:32:
In file included from include/linux/device/driver.h:21:
In file included from include/linux/module.h:20:
In file included from include/linux/elf.h:6:
In file included from arch/s390/include/asm/elf.h:173:
In file included from arch/s390/include/asm/mmu_context.h:11:
In file included from arch/s390/include/asm/pgalloc.h:18:
In file included from include/linux/mm.h:36:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:7:
include/linux/signal.h:98:11: warning: array index 3 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
98 | return (set->sig[3] | set->sig[2] |
| ^ ~
arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here
22 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/s390/mm/maccess.c:15:
In file included from include/linux/cpu.h:17:
In file included from include/linux/node.h:18:
In file included from include/linux/device.h:32:
In file included from include/linux/device/driver.h:21:
In file included from include/linux/module.h:20:
In file included from include/linux/elf.h:6:
In file included from arch/s390/include/asm/elf.h:173:
In file included from arch/s390/include/asm/mmu_context.h:11:
In file included from arch/s390/include/asm/pgalloc.h:18:
In file included from include/linux/mm.h:36:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:7:
include/linux/signal.h:98:25: warning: array index 2 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
98 | return (set->sig[3] | set->sig[2] |
| ^ ~
arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here
22 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/s390/mm/maccess.c:15:
In file included from include/linux/cpu.h:17:
In file included from include/linux/node.h:18:
In file included from include/linux/device.h:32:
In file included from include/linux/device/driver.h:21:
In file included from include/linux/module.h:20:
In file included from include/linux/elf.h:6:
In file included from arch/s390/include/asm/elf.h:173:
In file included from arch/s390/include/asm/mmu_context.h:11:
In file included from arch/s390/include/asm/pgalloc.h:18:
In file included from include/linux/mm.h:36:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:7:
include/linux/signal.h:99:4: warning: array index 1 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
99 | set->sig[1] | set->sig[0]) == 0;
| ^ ~
arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here
22 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/s390/mm/maccess.c:15:
In file included from include/linux/cpu.h:17:
In file included from include/linux/node.h:18:
In file included from include/linux/device.h:32:
In file included from include/linux/device/driver.h:21:
In file included from include/linux/module.h:20:
In file included from include/linux/elf.h:6:
In file included from arch/s390/include/asm/elf.h:173:
In file included from arch/s390/include/asm/mmu_context.h:11:
In file included from arch/s390/include/asm/pgalloc.h:18:
In file included from include/linux/mm.h:36:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:7:
include/linux/signal.h:101:11: warning: array index 1 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
101 | return (set->sig[1] | set->sig[0]) == 0;
| ^ ~
arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here
22 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/s390/mm/maccess.c:15:
In file included from include/linux/cpu.h:17:
In file included from include/linux/node.h:18:
In file included from include/linux/device.h:32:
In file included from include/linux/device/driver.h:21:
In file included from include/linux/module.h:20:
In file included from include/linux/elf.h:6:
In file included from arch/s390/include/asm/elf.h:173:
In file included from arch/s390/include/asm/mmu_context.h:11:
In file included from arch/s390/include/asm/pgalloc.h:18:
In file included from include/linux/mm.h:36:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:7:
include/linux/signal.h:114:11: warning: array index 3 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
114 | return (set1->sig[3] == set2->sig[3]) &&
| ^ ~
arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here
22 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/s390/mm/maccess.c:15:
In file included from include/linux/cpu.h:17:
vim +10 include/linux/text-patching.h
0c3beacf681ec8 Mike Rapoport (Microsoft 2024-10-23 6)
0c3beacf681ec8 Mike Rapoport (Microsoft 2024-10-23 7) #ifndef text_poke_copy
0c3beacf681ec8 Mike Rapoport (Microsoft 2024-10-23 8) static inline void *text_poke_copy(void *dst, const void *src, size_t len)
0c3beacf681ec8 Mike Rapoport (Microsoft 2024-10-23 9) {
0c3beacf681ec8 Mike Rapoport (Microsoft 2024-10-23 @10) return memcpy(dst, src, len);
0c3beacf681ec8 Mike Rapoport (Microsoft 2024-10-23 11) }
0c3beacf681ec8 Mike Rapoport (Microsoft 2024-10-23 12) #define text_poke_copy text_poke_copy
0c3beacf681ec8 Mike Rapoport (Microsoft 2024-10-23 13) #endif
0c3beacf681ec8 Mike Rapoport (Microsoft 2024-10-23 14)
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [PATCH 4/4] s390/maccess: Remove spinlock from __s390_kernel_write()
[not found] <20261026120329.1792436-5-hca@linux.ibm.com>
2026-10-27 10:09 ` [PATCH 4/4] s390/maccess: Remove spinlock from __s390_kernel_write() kernel test robot
@ 2026-10-27 10:09 ` kernel test robot
1 sibling, 0 replies; 2+ messages in thread
From: kernel test robot @ 2026-10-27 10:09 UTC (permalink / raw)
To: Heiko Carstens, Alexander Gordeev, Sven Schnelle, Vasily Gorbik,
Christian Borntraeger, Ilya Leoshkevich
Cc: llvm, oe-kbuild-all, linux-kernel, linux-s390
Hi Heiko,
kernel test robot noticed the following build errors:
[auto build test ERROR on s390/features]
[also build test ERROR on trace/for-next bpf-next/master bpf/master linus/master v7.3 next-20261026]
[cannot apply to bpf-next/net]
[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/Heiko-Carstens/s390-jump_label-Serialize-text-patching-with-text_mutex/20261026-130326
base: https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git features
patch link: https://lore.kernel.org/r/20261026120329.1792436-5-hca%40linux.ibm.com
patch subject: [PATCH 4/4] s390/maccess: Remove spinlock from __s390_kernel_write()
config: s390-defconfig (https://download.01.org/0day-ci/archive/20261027/202610271855.Il2BMBvq-lkp@intel.com/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261027/202610271855.Il2BMBvq-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/202610271855.Il2BMBvq-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from arch/s390/mm/maccess.c:9:
>> include/linux/text-patching.h:10:9: error: call to undeclared library function 'memcpy' with type 'void *(void *, const void *, unsigned long)'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
10 | return memcpy(dst, src, len);
| ^
include/linux/text-patching.h:10:9: note: include the header <string.h> or explicitly provide a declaration for 'memcpy'
In file included from arch/s390/mm/maccess.c:15:
In file included from include/linux/cpu.h:17:
In file included from include/linux/node.h:18:
In file included from include/linux/device.h:32:
In file included from include/linux/device/driver.h:21:
In file included from include/linux/module.h:20:
In file included from include/linux/elf.h:6:
In file included from arch/s390/include/asm/elf.h:173:
In file included from arch/s390/include/asm/mmu_context.h:11:
In file included from arch/s390/include/asm/pgalloc.h:18:
In file included from include/linux/mm.h:36:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:7:
include/linux/signal.h:98:11: warning: array index 3 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
98 | return (set->sig[3] | set->sig[2] |
| ^ ~
arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here
22 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/s390/mm/maccess.c:15:
In file included from include/linux/cpu.h:17:
In file included from include/linux/node.h:18:
In file included from include/linux/device.h:32:
In file included from include/linux/device/driver.h:21:
In file included from include/linux/module.h:20:
In file included from include/linux/elf.h:6:
In file included from arch/s390/include/asm/elf.h:173:
In file included from arch/s390/include/asm/mmu_context.h:11:
In file included from arch/s390/include/asm/pgalloc.h:18:
In file included from include/linux/mm.h:36:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:7:
include/linux/signal.h:98:25: warning: array index 2 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
98 | return (set->sig[3] | set->sig[2] |
| ^ ~
arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here
22 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/s390/mm/maccess.c:15:
In file included from include/linux/cpu.h:17:
In file included from include/linux/node.h:18:
In file included from include/linux/device.h:32:
In file included from include/linux/device/driver.h:21:
In file included from include/linux/module.h:20:
In file included from include/linux/elf.h:6:
In file included from arch/s390/include/asm/elf.h:173:
In file included from arch/s390/include/asm/mmu_context.h:11:
In file included from arch/s390/include/asm/pgalloc.h:18:
In file included from include/linux/mm.h:36:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:7:
include/linux/signal.h:99:4: warning: array index 1 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
99 | set->sig[1] | set->sig[0]) == 0;
| ^ ~
arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here
22 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/s390/mm/maccess.c:15:
In file included from include/linux/cpu.h:17:
In file included from include/linux/node.h:18:
In file included from include/linux/device.h:32:
In file included from include/linux/device/driver.h:21:
In file included from include/linux/module.h:20:
In file included from include/linux/elf.h:6:
In file included from arch/s390/include/asm/elf.h:173:
In file included from arch/s390/include/asm/mmu_context.h:11:
In file included from arch/s390/include/asm/pgalloc.h:18:
In file included from include/linux/mm.h:36:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:7:
include/linux/signal.h:101:11: warning: array index 1 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
101 | return (set->sig[1] | set->sig[0]) == 0;
| ^ ~
arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here
22 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/s390/mm/maccess.c:15:
In file included from include/linux/cpu.h:17:
In file included from include/linux/node.h:18:
In file included from include/linux/device.h:32:
In file included from include/linux/device/driver.h:21:
In file included from include/linux/module.h:20:
In file included from include/linux/elf.h:6:
In file included from arch/s390/include/asm/elf.h:173:
In file included from arch/s390/include/asm/mmu_context.h:11:
In file included from arch/s390/include/asm/pgalloc.h:18:
In file included from include/linux/mm.h:36:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:7:
include/linux/signal.h:114:11: warning: array index 3 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
114 | return (set1->sig[3] == set2->sig[3]) &&
| ^ ~
arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here
22 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/s390/mm/maccess.c:15:
In file included from include/linux/cpu.h:17:
vim +10 include/linux/text-patching.h
0c3beacf681ec89 Mike Rapoport (Microsoft 2024-10-23 6)
0c3beacf681ec89 Mike Rapoport (Microsoft 2024-10-23 7) #ifndef text_poke_copy
0c3beacf681ec89 Mike Rapoport (Microsoft 2024-10-23 8) static inline void *text_poke_copy(void *dst, const void *src, size_t len)
0c3beacf681ec89 Mike Rapoport (Microsoft 2024-10-23 9) {
0c3beacf681ec89 Mike Rapoport (Microsoft 2024-10-23 @10) return memcpy(dst, src, len);
0c3beacf681ec89 Mike Rapoport (Microsoft 2024-10-23 11) }
0c3beacf681ec89 Mike Rapoport (Microsoft 2024-10-23 12) #define text_poke_copy text_poke_copy
0c3beacf681ec89 Mike Rapoport (Microsoft 2024-10-23 13) #endif
0c3beacf681ec89 Mike Rapoport (Microsoft 2024-10-23 14)
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread