From: kernel test robot <lkp@intel.com>
To: "David Hildenbrand (Arm)" <david@kernel.org>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
Yeoreum Yun <yeoreum.yun@arm.com>
Subject: [davidhildenbrand:ptval_print 2/2] include/asm-generic/pgtable-nop4d.h:35:29: error: function cannot return array type 'pgd_t' (aka 'unsigned long[2]')
Date: Thu, 02 Jul 2026 09:45:58 +0800 [thread overview]
Message-ID: <202607020926.X3vSXV4v-lkp@intel.com> (raw)
tree: https://github.com/davidhildenbrand/linux ptval_print
head: dc3342ef64ac75a436edc8bfec8e3826e15f0a91
commit: dc3342ef64ac75a436edc8bfec8e3826e15f0a91 [2/2] mm: optimize pmdp_get() and friends for folded pagetable levels
config: arm-allnoconfig (https://download.01.org/0day-ci/archive/20260702/202607020926.X3vSXV4v-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260702/202607020926.X3vSXV4v-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/202607020926.X3vSXV4v-lkp@intel.com/
All errors (new ones prefixed by >>):
WARN /zdci/src/lkp/lib/log.sh:131:in `log_warn': /opt/cross/rustc-1.96.0-bindgen-0.72.1 doesn't exist
from /zdci/src/kernel-tests/lib/debug.sh:164: kbuild_log_warn
from /zdci/src/kernel-tests/lib/kbuild.sh:3371: export_rust_path
from /zdci/src/kernel-tests/lib/kbuild.sh:3361: export_compiler_path
from /zdci/src/kernel-tests/lib/kbuild.sh:3840: invoke_make
from /zdci/src/kernel-tests/lib/kbuild.sh:4022: make
from /zdci/src/kernel-tests/common.sh:202: redirect_error_to_screen
from /zdci/src/kernel-tests/common.sh:210: redirect_command_errors
from /zdci/src/kernel-tests/lib/kbuild.sh:5680: make_prepare
from /zdci/src/kernel-tests/lib/kbuild.sh:5909: test_kernel_build
from /zdci/src/kernel-tests/lib/builder/base.sh:442: builder_execute_build
from /zdci/src/kernel-tests/lib/kbuild.sh:6419: compile_one_config
from /zdci/src/kernel-tests/lib/builder/base.sh:88: builder_compile
from /zdci/src/kernel-tests/bisect-test-build-error.sh:101: main
In file included from arch/arm/kernel/asm-offsets.c:14:
In file included from include/linux/mm.h:31:
In file included from include/linux/pgtable.h:6:
In file included from arch/arm/include/asm/pgtable.h:13:
In file included from include/asm-generic/pgtable-nopud.h:7:
>> include/asm-generic/pgtable-nop4d.h:35:29: error: function cannot return array type 'pgd_t' (aka 'unsigned long[2]')
35 | static inline pgd_t pgdp_get(pgd_t *p4dp)
| ^
>> include/asm-generic/pgtable-nop4d.h:39:9: error: incompatible pointer to integer conversion returning 'pgd_t' (aka 'unsigned long[2]') from a function with result type 'int' [-Wint-conversion]
39 | return dummy;
| ^~~~~
include/asm-generic/pgtable-nop4d.h:39:9: warning: address of stack memory associated with local variable 'dummy' returned [-Wreturn-stack-address]
39 | return dummy;
| ^~~~~
In file included from arch/arm/kernel/asm-offsets.c:14:
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:14:
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:14:
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:14:
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:14:
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:14:
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:14:
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:14:
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:14:
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:139:8: note: expanded from macro '_SIG_SET_BINOP'
139 | b3 = b->sig[3]; b2 = b->sig[2]; \
vim +35 include/asm-generic/pgtable-nop4d.h
34
> 35 static inline pgd_t pgdp_get(pgd_t *p4dp)
36 {
37 pgd_t dummy = { 0 };
38
> 39 return dummy;
40 }
41 #define pgdp_get pgdp_get
42
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-07-02 1:47 UTC|newest]
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