Hi Anshuman,
kernel test robot noticed the following build errors:
[auto build test ERROR on char-misc/char-misc-testing]
[also build test ERROR on char-misc/char-misc-next char-misc/char-misc-linus brauner-vfs/vfs.all dennis-percpu/for-next linus/master v6.11]
[cannot apply to akpm-mm/mm-everything next-20240918]
[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/Anshuman-Khandual/m68k-mm-Change-pmd_val/20240917-153331
base: char-misc/char-misc-testing
patch link: https://lore.kernel.org/r/20240917073117.1531207-8-anshuman.khandual%40arm.com
patch subject: [PATCH V2 7/7] mm: Use pgdp_get() for accessing PGD entries
config: arm-footbridge_defconfig (https://download.01.org/0day-ci/archive/20240919/202409190310.ViHBRe12-lkp@xxxxxxxxx/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 8663a75fa2f31299ab8d1d90288d9df92aadee88)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240919/202409190310.ViHBRe12-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409190310.ViHBRe12-lkp@xxxxxxxxx/
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:30:
include/linux/pgtable.h:1245:18: error: use of undeclared identifier 'pgdp'; did you mean 'pgd'?
1245 | pgd_t old_pgd = pgdp_get(pgd);
| ^
arch/arm/include/asm/pgtable.h:154:36: note: expanded from macro 'pgdp_get'
154 | #define pgdp_get(pgpd) READ_ONCE(*pgdp)
| ^
include/linux/pgtable.h:1243:48: note: 'pgd' declared here
1243 | static inline int pgd_none_or_clear_bad(pgd_t *pgd)
| ^
include/linux/pgtable.h:1245:18: error: use of undeclared identifier 'pgdp'; did you mean 'pgd'?
1245 | pgd_t old_pgd = pgdp_get(pgd);
| ^
arch/arm/include/asm/pgtable.h:154:36: note: expanded from macro 'pgdp_get'
154 | #define pgdp_get(pgpd) READ_ONCE(*pgdp)
| ^
include/linux/pgtable.h:1243:48: note: 'pgd' declared here
1243 | static inline int pgd_none_or_clear_bad(pgd_t *pgd)
| ^
include/linux/pgtable.h:1245:18: error: use of undeclared identifier 'pgdp'; did you mean 'pgd'?
1245 | pgd_t old_pgd = pgdp_get(pgd);
| ^
arch/arm/include/asm/pgtable.h:154:36: note: expanded from macro 'pgdp_get'
154 | #define pgdp_get(pgpd) READ_ONCE(*pgdp)
| ^
include/linux/pgtable.h:1243:48: note: 'pgd' declared here
1243 | static inline int pgd_none_or_clear_bad(pgd_t *pgd)
| ^
include/linux/pgtable.h:1245:18: error: use of undeclared identifier 'pgdp'; did you mean 'pgd'?
1245 | pgd_t old_pgd = pgdp_get(pgd);
| ^
arch/arm/include/asm/pgtable.h:154:36: note: expanded from macro 'pgdp_get'
154 | #define pgdp_get(pgpd) READ_ONCE(*pgdp)
| ^
include/linux/pgtable.h:1243:48: note: 'pgd' declared here
1243 | static inline int pgd_none_or_clear_bad(pgd_t *pgd)
| ^
include/linux/pgtable.h:1245:18: error: use of undeclared identifier 'pgdp'; did you mean 'pgd'?
1245 | pgd_t old_pgd = pgdp_get(pgd);
| ^
arch/arm/include/asm/pgtable.h:154:36: note: expanded from macro 'pgdp_get'
154 | #define pgdp_get(pgpd) READ_ONCE(*pgdp)
| ^
include/linux/pgtable.h:1243:48: note: 'pgd' declared here
1243 | static inline int pgd_none_or_clear_bad(pgd_t *pgd)
| ^
include/linux/pgtable.h:1245:18: error: use of undeclared identifier 'pgdp'; did you mean 'pgd'?
1245 | pgd_t old_pgd = pgdp_get(pgd);
| ^
arch/arm/include/asm/pgtable.h:154:36: note: expanded from macro 'pgdp_get'
154 | #define pgdp_get(pgpd) READ_ONCE(*pgdp)
| ^
include/linux/pgtable.h:1243:48: note: 'pgd' declared here
1243 | static inline int pgd_none_or_clear_bad(pgd_t *pgd)
| ^
include/linux/pgtable.h:1245:18: error: use of undeclared identifier 'pgdp'; did you mean 'pgd'?
1245 | pgd_t old_pgd = pgdp_get(pgd);
| ^
arch/arm/include/asm/pgtable.h:154:36: note: expanded from macro 'pgdp_get'
154 | #define pgdp_get(pgpd) READ_ONCE(*pgdp)
| ^
include/linux/pgtable.h:1243:48: note: 'pgd' declared here
1243 | static inline int pgd_none_or_clear_bad(pgd_t *pgd)
| ^
include/linux/pgtable.h:1245:18: error: use of undeclared identifier 'pgdp'; did you mean 'pgd'?
1245 | pgd_t old_pgd = pgdp_get(pgd);
| ^
arch/arm/include/asm/pgtable.h:154:36: note: expanded from macro 'pgdp_get'
154 | #define pgdp_get(pgpd) READ_ONCE(*pgdp)
| ^
include/linux/pgtable.h:1243:48: note: 'pgd' declared here
1243 | static inline int pgd_none_or_clear_bad(pgd_t *pgd)
| ^
include/linux/pgtable.h:1245:8: error: array initializer must be an initializer list or wide string literal
1245 | pgd_t old_pgd = pgdp_get(pgd);
| ^
In file included from arch/arm/kernel/asm-offsets.c:12:
In file included from include/linux/mm.h:1131:
In file included from include/linux/huge_mm.h:8:
In file included from include/linux/fs.h:33:
In file included from include/linux/percpu-rwsem.h:7:
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:1131:
In file included from include/linux/huge_mm.h:8:
In file included from include/linux/fs.h:33:
In file included from include/linux/percpu-rwsem.h:7:
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:1131:
In file included from include/linux/huge_mm.h:8:
In file included from include/linux/fs.h:33:
In file included from include/linux/percpu-rwsem.h:7:
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:1131:
In file included from include/linux/huge_mm.h:8:
In file included from include/linux/fs.h:33:
In file included from include/linux/percpu-rwsem.h:7:
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:1131:
In file included from include/linux/huge_mm.h:8:
In file included from include/linux/fs.h:33:
In file included from include/linux/percpu-rwsem.h:7:
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:1131:
In file included from include/linux/huge_mm.h:8:
In file included from include/linux/fs.h:33:
In file included from include/linux/percpu-rwsem.h:7:
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:1131:
In file included from include/linux/huge_mm.h:8:
In file included from include/linux/fs.h:33:
In file included from include/linux/percpu-rwsem.h:7:
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:1131:
In file included from include/linux/huge_mm.h:8:
In file included from include/linux/fs.h:33:
--
163 | _SIG_SET_BINOP(sigandnsets, _sig_andn)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/signal.h:140:3: note: expanded from macro '_SIG_SET_BINOP'
140 | r->sig[3] = op(a3, b3); \
| ^ ~
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:1131:
In file included from include/linux/huge_mm.h:8:
In file included from include/linux/fs.h:33:
In file included from include/linux/percpu-rwsem.h:7:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:6:
include/linux/signal.h:163:1: warning: array index 2 is past the end of the array (that has type 'unsigned long[2]') [-Warray-bounds]
163 | _SIG_SET_BINOP(sigandnsets, _sig_andn)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/signal.h:141:3: note: expanded from macro '_SIG_SET_BINOP'
141 | r->sig[2] = op(a2, b2); \
| ^ ~
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:1131:
In file included from include/linux/huge_mm.h:8:
In file included from include/linux/fs.h:33:
In file included from include/linux/percpu-rwsem.h:7:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:6:
include/linux/signal.h:187:1: warning: array index 3 is past the end of the array (that has type 'unsigned long[2]') [-Warray-bounds]
187 | _SIG_SET_OP(signotset, _sig_not)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/signal.h:174:27: note: expanded from macro '_SIG_SET_OP'
174 | case 4: set->sig[3] = op(set->sig[3]); \
| ^ ~
include/linux/signal.h:186:24: note: expanded from macro '_sig_not'
186 | #define _sig_not(x) (~(x))
| ^
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:1131:
In file included from include/linux/huge_mm.h:8:
In file included from include/linux/fs.h:33:
In file included from include/linux/percpu-rwsem.h:7:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:6:
include/linux/signal.h:187:1: warning: array index 3 is past the end of the array (that has type 'unsigned long[2]') [-Warray-bounds]
187 | _SIG_SET_OP(signotset, _sig_not)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/signal.h:174:10: note: expanded from macro '_SIG_SET_OP'
174 | case 4: set->sig[3] = op(set->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:1131:
In file included from include/linux/huge_mm.h:8:
In file included from include/linux/fs.h:33:
In file included from include/linux/percpu-rwsem.h:7:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:6:
include/linux/signal.h:187:1: warning: array index 2 is past the end of the array (that has type 'unsigned long[2]') [-Warray-bounds]
187 | _SIG_SET_OP(signotset, _sig_not)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/signal.h:175:20: note: expanded from macro '_SIG_SET_OP'
175 | set->sig[2] = op(set->sig[2]); \
| ^ ~
include/linux/signal.h:186:24: note: expanded from macro '_sig_not'
186 | #define _sig_not(x) (~(x))
| ^
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:1131:
In file included from include/linux/huge_mm.h:8:
In file included from include/linux/fs.h:33:
In file included from include/linux/percpu-rwsem.h:7:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:6:
include/linux/signal.h:187:1: warning: array index 2 is past the end of the array (that has type 'unsigned long[2]') [-Warray-bounds]
187 | _SIG_SET_OP(signotset, _sig_not)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/signal.h:175:3: note: expanded from macro '_SIG_SET_OP'
175 | set->sig[2] = op(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:2232:
include/linux/vmstat.h:517:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
517 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
In file included from arch/arm/kernel/asm-offsets.c:12:
include/linux/mm.h:2822:28: error: use of undeclared identifier 'pgdp'; did you mean 'pgd'?
2822 | return (unlikely(pgd_none(pgdp_get(pgd))) && __p4d_alloc(mm, pgd, address)) ?
| ^
arch/arm/include/asm/pgtable.h:154:36: note: expanded from macro 'pgdp_get'
154 | #define pgdp_get(pgpd) READ_ONCE(*pgdp)
| ^
include/linux/mm.h:2819:61: note: 'pgd' declared here
2819 | static inline p4d_t *p4d_alloc(struct mm_struct *mm, pgd_t *pgd,
| ^
include/linux/mm.h:2822:28: error: use of undeclared identifier 'pgdp'; did you mean 'pgd'?
2822 | return (unlikely(pgd_none(pgdp_get(pgd))) && __p4d_alloc(mm, pgd, address)) ?
| ^
arch/arm/include/asm/pgtable.h:154:36: note: expanded from macro 'pgdp_get'
154 | #define pgdp_get(pgpd) READ_ONCE(*pgdp)
| ^
include/linux/mm.h:2819:61: note: 'pgd' declared here
2819 | static inline p4d_t *p4d_alloc(struct mm_struct *mm, pgd_t *pgd,
| ^
include/linux/mm.h:2822:28: error: use of undeclared identifier 'pgdp'; did you mean 'pgd'?
2822 | return (unlikely(pgd_none(pgdp_get(pgd))) && __p4d_alloc(mm, pgd, address)) ?
| ^
arch/arm/include/asm/pgtable.h:154:36: note: expanded from macro 'pgdp_get'
154 | #define pgdp_get(pgpd) READ_ONCE(*pgdp)
| ^
include/linux/mm.h:2819:61: note: 'pgd' declared here
2819 | static inline p4d_t *p4d_alloc(struct mm_struct *mm, pgd_t *pgd,
| ^
include/linux/mm.h:2822:28: error: use of undeclared identifier 'pgdp'; did you mean 'pgd'?
2822 | return (unlikely(pgd_none(pgdp_get(pgd))) && __p4d_alloc(mm, pgd, address)) ?
| ^
arch/arm/include/asm/pgtable.h:154:36: note: expanded from macro 'pgdp_get'
154 | #define pgdp_get(pgpd) READ_ONCE(*pgdp)
| ^
include/linux/mm.h:2819:61: note: 'pgd' declared here
2819 | static inline p4d_t *p4d_alloc(struct mm_struct *mm, pgd_t *pgd,
| ^
include/linux/mm.h:2822:28: error: use of undeclared identifier 'pgdp'; did you mean 'pgd'?
2822 | return (unlikely(pgd_none(pgdp_get(pgd))) && __p4d_alloc(mm, pgd, address)) ?
| ^
arch/arm/include/asm/pgtable.h:154:36: note: expanded from macro 'pgdp_get'
154 | #define pgdp_get(pgpd) READ_ONCE(*pgdp)
| ^
include/linux/mm.h:2819:61: note: 'pgd' declared here
2819 | static inline p4d_t *p4d_alloc(struct mm_struct *mm, pgd_t *pgd,
| ^
include/linux/mm.h:2822:28: error: use of undeclared identifier 'pgdp'; did you mean 'pgd'?
2822 | return (unlikely(pgd_none(pgdp_get(pgd))) && __p4d_alloc(mm, pgd, address)) ?
| ^
arch/arm/include/asm/pgtable.h:154:36: note: expanded from macro 'pgdp_get'
154 | #define pgdp_get(pgpd) READ_ONCE(*pgdp)
| ^
include/linux/mm.h:2819:61: note: 'pgd' declared here
2819 | static inline p4d_t *p4d_alloc(struct mm_struct *mm, pgd_t *pgd,
| ^
include/linux/mm.h:2822:28: error: use of undeclared identifier 'pgdp'; did you mean 'pgd'?
2822 | return (unlikely(pgd_none(pgdp_get(pgd))) && __p4d_alloc(mm, pgd, address)) ?
| ^
arch/arm/include/asm/pgtable.h:154:36: note: expanded from macro 'pgdp_get'
154 | #define pgdp_get(pgpd) READ_ONCE(*pgdp)
| ^
include/linux/mm.h:2819:61: note: 'pgd' declared here
2819 | static inline p4d_t *p4d_alloc(struct mm_struct *mm, pgd_t *pgd,
| ^
include/linux/mm.h:2822:28: error: use of undeclared identifier 'pgdp'; did you mean 'pgd'?
2822 | return (unlikely(pgd_none(pgdp_get(pgd))) && __p4d_alloc(mm, pgd, address)) ?
| ^
arch/arm/include/asm/pgtable.h:154:36: note: expanded from macro 'pgdp_get'
154 | #define pgdp_get(pgpd) READ_ONCE(*pgdp)
| ^
include/linux/mm.h:2819:61: note: 'pgd' declared here
2819 | static inline p4d_t *p4d_alloc(struct mm_struct *mm, pgd_t *pgd,
| ^
include/linux/mm.h:2822:28: error: passing 'const volatile pmdval_t *' (aka 'const volatile unsigned int *') to parameter of type 'pmdval_t *' (aka 'unsigned int *') discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
2822 | return (unlikely(pgd_none(pgdp_get(pgd))) && __p4d_alloc(mm, pgd, address)) ?
| ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~
arch/arm/include/asm/pgtable.h:154:25: note: expanded from macro 'pgdp_get'
154 | #define pgdp_get(pgpd) READ_ONCE(*pgdp)
| ^
include/asm-generic/rwonce.h:47:28: note: expanded from macro 'READ_ONCE'
47 | #define READ_ONCE(x) \
| ^
include/linux/compiler.h:77:42: note: expanded from macro 'unlikely'
77 | # define unlikely(x) __builtin_expect(!!(x), 0)
| ^
include/asm-generic/pgtable-nop4d.h:21:34: note: passing argument to parameter 'pgd' here
21 | static inline int pgd_none(pgd_t pgd) { return 0; }
| ^
29 warnings and 18 errors generated.
make[3]: *** [scripts/Makefile.build:117: arch/arm/kernel/asm-offsets.s] Error 1
make[3]: Target 'prepare' not remade because of errors.
make[2]: *** [Makefile:1194: prepare0] Error 2
make[2]: Target 'prepare' not remade because of errors.
make[1]: *** [Makefile:224: __sub-make] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:224: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.
vim +1245 include/linux/pgtable.h
1242
1243 static inline int pgd_none_or_clear_bad(pgd_t *pgd)
1244 {
1245 pgd_t old_pgd = pgdp_get(pgd);
1246
1247 if (pgd_none(old_pgd))
1248 return 1;
1249 if (unlikely(pgd_bad(old_pgd))) {
1250 pgd_clear_bad(pgd);
1251 return 1;
1252 }
1253 return 0;
1254 }
1255
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