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Message-ID: <202504301328.ltLGuTxD-lkp@intel.com>
Date: Wed, 30 Apr 2025 13:45:46 +0800
From: kernel test robot <lkp@...el.com>
To: Dev Jain <dev.jain@....com>, akpm@...ux-foundation.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
ryan.roberts@....com, david@...hat.com, willy@...radead.org,
linux-mm@...ck.org, linux-kernel@...r.kernel.org,
catalin.marinas@....com, will@...nel.org, Liam.Howlett@...cle.com,
lorenzo.stoakes@...cle.com, vbabka@...e.cz, jannh@...gle.com,
anshuman.khandual@....com, peterx@...hat.com, joey.gouly@....com,
ioworker0@...il.com, baohua@...nel.org, kevin.brodsky@....com,
quic_zhenhuah@...cinc.com, christophe.leroy@...roup.eu,
yangyicong@...ilicon.com, linux-arm-kernel@...ts.infradead.org,
namit@...are.com, hughd@...gle.com, yang@...amperecomputing.com,
ziy@...dia.com, Dev Jain <dev.jain@....com>
Subject: Re: [PATCH v2 3/7] mm: Add batched versions of
ptep_modify_prot_start/commit
Hi Dev,
kernel test robot noticed the following build errors:
[auto build test ERROR on akpm-mm/mm-everything]
[also build test ERROR on arm64/for-next/core linus/master v6.15-rc4 next-20250429]
[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/Dev-Jain/mm-Refactor-code-in-mprotect/20250429-133151
base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link: https://lore.kernel.org/r/20250429052336.18912-4-dev.jain%40arm.com
patch subject: [PATCH v2 3/7] mm: Add batched versions of ptep_modify_prot_start/commit
config: arm-randconfig-003-20250430 (https://download.01.org/0day-ci/archive/20250430/202504301328.ltLGuTxD-lkp@intel.com/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project f819f46284f2a79790038e1f6649172789734ae8)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250430/202504301328.ltLGuTxD-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202504301328.ltLGuTxD-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from arch/arm/kernel/asm-offsets.c:12:
In file included from include/linux/mm.h:31:
>> include/linux/pgtable.h:901:8: error: call to undeclared function 'ptep_modify_prot_start'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
901 | pte = ptep_modify_prot_start(vma, addr, ptep);
| ^
>> include/linux/pgtable.h:921:3: error: call to undeclared function 'ptep_modify_prot_commit'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
921 | ptep_modify_prot_commit(vma, addr, ptep, old_pte, pte);
| ^
>> include/linux/pgtable.h:1356:21: error: static declaration of 'ptep_modify_prot_start' follows non-static declaration
1356 | static inline pte_t ptep_modify_prot_start(struct vm_area_struct *vma,
| ^
include/linux/pgtable.h:901:8: note: previous implicit declaration is here
901 | pte = ptep_modify_prot_start(vma, addr, ptep);
| ^
include/linux/pgtable.h:1367:20: error: static declaration of 'ptep_modify_prot_commit' follows non-static declaration
1367 | static inline void ptep_modify_prot_commit(struct vm_area_struct *vma,
| ^
include/linux/pgtable.h:921:3: note: previous implicit declaration is here
921 | ptep_modify_prot_commit(vma, addr, ptep, old_pte, pte);
| ^
In file included from arch/arm/kernel/asm-offsets.c:12:
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:6:
include/linux/signal.h:98:11: warning: array index 3 is past the end of the array (that has type 'unsigned long[2]') [-Warray-bounds]
98 | return (set->sig[3] | set->sig[2] |
| ^ ~
arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
17 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/arm/kernel/asm-offsets.c:12:
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:6:
include/linux/signal.h:98:25: warning: array index 2 is past the end of the array (that has type 'unsigned long[2]') [-Warray-bounds]
98 | return (set->sig[3] | set->sig[2] |
| ^ ~
arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
17 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/arm/kernel/asm-offsets.c:12:
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:6:
include/linux/signal.h:114:11: warning: array index 3 is past the end of the array (that has type 'const unsigned long[2]') [-Warray-bounds]
114 | return (set1->sig[3] == set2->sig[3]) &&
| ^ ~
arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
17 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/arm/kernel/asm-offsets.c:12:
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:6:
include/linux/signal.h:114:27: warning: array index 3 is past the end of the array (that has type 'const unsigned long[2]') [-Warray-bounds]
114 | return (set1->sig[3] == set2->sig[3]) &&
| ^ ~
arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
17 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/arm/kernel/asm-offsets.c:12:
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:6:
include/linux/signal.h:115:5: warning: array index 2 is past the end of the array (that has type 'const unsigned long[2]') [-Warray-bounds]
115 | (set1->sig[2] == set2->sig[2]) &&
| ^ ~
arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
17 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/arm/kernel/asm-offsets.c:12:
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:6:
include/linux/signal.h:115:21: warning: array index 2 is past the end of the array (that has type 'const unsigned long[2]') [-Warray-bounds]
115 | (set1->sig[2] == set2->sig[2]) &&
| ^ ~
arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
17 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/arm/kernel/asm-offsets.c:12:
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:6:
include/linux/signal.h:157:1: warning: array index 3 is past the end of the array (that has type 'const unsigned long[2]') [-Warray-bounds]
157 | _SIG_SET_BINOP(sigorsets, _sig_or)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/signal.h:138:8: note: expanded from macro '_SIG_SET_BINOP'
138 | a3 = a->sig[3]; a2 = a->sig[2]; \
| ^ ~
arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
17 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/arm/kernel/asm-offsets.c:12:
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:6:
include/linux/signal.h:157:1: warning: array index 2 is past the end of the array (that has type 'const unsigned long[2]') [-Warray-bounds]
157 | _SIG_SET_BINOP(sigorsets, _sig_or)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/signal.h:138:24: note: expanded from macro '_SIG_SET_BINOP'
138 | a3 = a->sig[3]; a2 = a->sig[2]; \
| ^ ~
arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
17 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from arch/arm/kernel/asm-offsets.c:12:
In file included from include/linux/mm.h:36:
In file included from include/linux/rcuwait.h:6:
vim +/ptep_modify_prot_start +901 include/linux/pgtable.h
893
894 /* See the comment for ptep_modify_prot_start */
895 #ifndef modify_prot_start_ptes
896 static inline pte_t modify_prot_start_ptes(struct vm_area_struct *vma,
897 unsigned long addr, pte_t *ptep, unsigned int nr)
898 {
899 pte_t pte, tmp_pte;
900
> 901 pte = ptep_modify_prot_start(vma, addr, ptep);
902 while (--nr) {
903 ptep++;
904 addr += PAGE_SIZE;
905 tmp_pte = ptep_modify_prot_start(vma, addr, ptep);
906 if (pte_dirty(tmp_pte))
907 pte = pte_mkdirty(pte);
908 if (pte_young(tmp_pte))
909 pte = pte_mkyoung(pte);
910 }
911 return pte;
912 }
913 #endif
914
915 /* See the comment for ptep_modify_prot_commit */
916 #ifndef modify_prot_commit_ptes
917 static inline void modify_prot_commit_ptes(struct vm_area_struct *vma, unsigned long addr,
918 pte_t *ptep, pte_t old_pte, pte_t pte, unsigned int nr)
919 {
920 for (;;) {
> 921 ptep_modify_prot_commit(vma, addr, ptep, old_pte, pte);
922 if (--nr == 0)
923 break;
924 ptep++;
925 addr += PAGE_SIZE;
926 old_pte = pte_next_pfn(old_pte);
927 pte = pte_next_pfn(pte);
928 }
929 }
930 #endif
931
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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