* [akpm-mm:mm-new] BUILD REGRESSION b4fc90c82982d98959af08b4320420bcfc01303b
@ 2026-09-27 8:00 kernel test robot
2026-09-27 18:04 ` Andrew Morton
0 siblings, 1 reply; 3+ messages in thread
From: kernel test robot @ 2026-09-27 8:00 UTC (permalink / raw)
To: David Hildenbrand; +Cc: Andrew Morton, Linux Memory Management List, mm-commits
tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-new
branch HEAD: b4fc90c82982d98959af08b4320420bcfc01303b mm/swap, PM: hibernate: atomically replace hibernation pin
Error/Warning (recently discovered and may have been fixed):
https://lore.kernel.org/oe-kbuild-all/202609160337.WJiD9BqX-lkp@intel.com
https://lore.kernel.org/oe-kbuild-all/202609171159.oaB1OaSG-lkp@intel.com
https://lore.kernel.org/oe-kbuild-all/202609270030.Y0QVBPmK-lkp@intel.com
aarch64-linux-ld: Unexpected GOT/PLT entries detected!
aarch64-linux-ld: Unexpected run-time procedure linkages detected!
arena.c:(.text+0x11fc): undefined reference to `__check_safe_pte_update'
fs/proc/task_mmu.c:3450:17: error: implicit declaration of function 'drop_rcu' [-Werror=implicit-function-declaration]
fs/proc/task_mmu.c:3450:3: error: call to undeclared function 'drop_rcu'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
fs/proc/task_mmu.c:3450:3: error: implicit declaration of function 'drop_rcu'; did you mean 'drop_slab'? [-Werror=implicit-function-declaration]
fs/proc/task_mmu.c:3452:17: error: implicit declaration of function 'reacquire_rcu' [-Werror=implicit-function-declaration]
fs/proc/task_mmu.c:3452:3: error: call to undeclared function 'reacquire_rcu'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
fs/proc/task_mmu.c:3452:3: error: implicit declaration of function 'reacquire_rcu'; did you mean 'get_file_rcu'? [-Werror=implicit-function-declaration]
gup.c:(.text+0x2b48): undefined reference to `__check_safe_pte_update'
hugetlbpage.c:(.text+0x1a8): undefined reference to `__check_safe_pte_update'
memory.c:(.text+0x3418): undefined reference to `__check_safe_pte_update'
mmu.c:(.text+0x9a8): undefined reference to `__check_safe_pte_update'
Error/Warning ids grouped by kconfigs:
recent_errors
|-- arm64-randconfig-1002-20260926
| |-- aarch64-linux-ld:Unexpected-GOT-PLT-entries-detected
| |-- aarch64-linux-ld:Unexpected-run-time-procedure-linkages-detected
| |-- arena.c:(.text):undefined-reference-to-__check_safe_pte_update
| |-- gup.c:(.text):undefined-reference-to-__check_safe_pte_update
| |-- hugetlbpage.c:(.text):undefined-reference-to-__check_safe_pte_update
| |-- memory.c:(.text):undefined-reference-to-__check_safe_pte_update
| `-- mmu.c:(.text):undefined-reference-to-__check_safe_pte_update
|-- powerpc64-randconfig-1001-20260926
| |-- fs-proc-task_mmu.c:error:implicit-declaration-of-function-drop_rcu
| `-- fs-proc-task_mmu.c:error:implicit-declaration-of-function-reacquire_rcu
|-- sparc-randconfig-1001-20260926
| |-- fs-proc-task_mmu.c:error:implicit-declaration-of-function-drop_rcu
| `-- fs-proc-task_mmu.c:error:implicit-declaration-of-function-reacquire_rcu
`-- x86_64-randconfig-1012-20260926
|-- fs-proc-task_mmu.c:error:call-to-undeclared-function-drop_rcu-ISO-C99-and-later-do-not-support-implicit-function-declarations
`-- fs-proc-task_mmu.c:error:call-to-undeclared-function-reacquire_rcu-ISO-C99-and-later-do-not-support-implicit-function-declarations
elapsed time: 1450m
configs tested: 181
configs skipped: 5
tested configs:
alpha allnoconfig gcc-16.1.0
alpha allyesconfig gcc-16.1.0
alpha defconfig gcc-16.1.0
arc allmodconfig gcc-16.1.0
arc allnoconfig gcc-16.1.0
arc allyesconfig gcc-16.1.0
arc defconfig gcc-16.1.0
arc randconfig-1000-20260926 gcc-8.5.0
arc randconfig-1001-20260926 gcc-12.5.0
arm allnoconfig clang-17
arm allyesconfig gcc-16.1.0
arm defconfig clang-24
arm gemini_defconfig clang-24
arm randconfig-1000-20260926 clang-17
arm randconfig-1001-20260926 clang-24
arm randconfig-1002-20260926 clang-17
arm randconfig-1003-20260926 gcc-8.5.0
arm64 allmodconfig clang-24
arm64 allnoconfig gcc-16.1.0
arm64 defconfig gcc-16.1.0
arm64 randconfig-1000-20260926 gcc-9.5.0
arm64 randconfig-1001-20260926 clang-24
arm64 randconfig-1002-20260926 gcc-8.5.0
arm64 randconfig-1003-20260926 gcc-15.2.0
csky allmodconfig gcc-16.1.0
csky allnoconfig gcc-16.1.0
csky defconfig gcc-16.1.0
csky randconfig-1000-20260926 gcc-16.1.0
csky randconfig-1001-20260926 gcc-16.1.0
csky randconfig-r1300-20260926 gcc-13.4.0 sparse
hexagon allmodconfig clang-24
hexagon allnoconfig clang-24
hexagon defconfig clang-24
hexagon randconfig-1000-20260926 clang-24
hexagon randconfig-1001-20260926 clang-19
i386 allmodconfig gcc-14
i386 allnoconfig gcc-14
i386 buildonly-randconfig-1000-20260926 gcc-14
i386 buildonly-randconfig-1001-20260926 clang-22
i386 buildonly-randconfig-1002-20260926 gcc-14
i386 buildonly-randconfig-1003-20260926 gcc-14
i386 buildonly-randconfig-1004-20260926 gcc-14
i386 buildonly-randconfig-1005-20260926 gcc-14
i386 defconfig clang-22
i386 randconfig-1000-20260926 gcc-14
i386 randconfig-1001-20260926 gcc-14
i386 randconfig-1002-20260926 gcc-14
i386 randconfig-1003-20260926 clang-22
i386 randconfig-1004-20260926 gcc-14
i386 randconfig-1005-20260926 gcc-14
i386 randconfig-1006-20260926 clang-22
i386 randconfig-1007-20260926 gcc-14
i386 randconfig-1008-20260926 gcc-14
i386 randconfig-1009-20260926 gcc-14
i386 randconfig-1010-20260926 clang-22
i386 randconfig-1011-20260926 gcc-14
i386 randconfig-1012-20260926 gcc-13
i386 randconfig-1013-20260926 clang-22
i386 randconfig-1300-20260926 clang-22 sparse
i386 randconfig-1301-20260926 gcc-14 sparse
i386 randconfig-1302-20260926 gcc-13 sparse
i386 randconfig-r1303-20260926 clang-22 sparse
loongarch allmodconfig clang-19
loongarch allnoconfig clang-20
loongarch defconfig clang-24
loongarch randconfig-1000-20260926 gcc-13.4.0
loongarch randconfig-1001-20260926 clang-18
loongarch randconfig-r1305-20260926 gcc-16.1.0 sparse
m68k allmodconfig gcc-16.1.0
m68k allnoconfig gcc-16.1.0
m68k allyesconfig gcc-16.1.0
m68k defconfig gcc-16.1.0
microblaze allnoconfig gcc-16.1.0
microblaze allyesconfig gcc-16.1.0
microblaze defconfig gcc-16.1.0
mips allmodconfig gcc-16.1.0
mips allnoconfig gcc-16.1.0
mips allyesconfig gcc-16.1.0
mips decstation_defconfig gcc-16.1.0
mips rm200_defconfig gcc-16.1.0
nios2 allmodconfig gcc-11.5.0
nios2 allnoconfig gcc-11.5.0
nios2 defconfig gcc-11.5.0
nios2 randconfig-1000-20260926 gcc-10.5.0
nios2 randconfig-1001-20260926 gcc-8.5.0
openrisc allmodconfig gcc-16.1.0
openrisc allnoconfig gcc-16.1.0
openrisc defconfig gcc-16.1.0
parisc allmodconfig gcc-16.1.0
parisc allnoconfig gcc-16.1.0
parisc allyesconfig gcc-16.1.0
parisc defconfig gcc-16.1.0
parisc randconfig-1000-20260926 gcc-8.5.0
parisc randconfig-1001-20260926 gcc-10.5.0
parisc64 defconfig gcc-16.1.0
powerpc akebono_defconfig clang-24
powerpc allmodconfig gcc-16.1.0
powerpc allnoconfig gcc-16.1.0
powerpc g5_defconfig gcc-16.1.0
powerpc iss476-smp_defconfig gcc-16.1.0
powerpc randconfig-1000-20260926 gcc-8.5.0
powerpc randconfig-1001-20260926 gcc-9.5.0
powerpc64 randconfig-1000-20260926 clang-24
powerpc64 randconfig-1001-20260926 gcc-8.5.0
riscv allmodconfig clang-24
riscv allnoconfig gcc-16.1.0
riscv allyesconfig clang-24
riscv defconfig clang-24
riscv randconfig-1000-20260926 gcc-15.2.0
riscv randconfig-1001-20260926 gcc-9.5.0
riscv randconfig-r1309-20260926 clang-24 sparse
s390 allmodconfig clang-24
s390 allnoconfig clang-24
s390 allyesconfig gcc-16.1.0
s390 defconfig clang-18
s390 randconfig-1000-20260926 gcc-15.2.0
s390 randconfig-1001-20260926 gcc-8.5.0
s390 randconfig-r1301-20260926 clang-24 sparse
sh allmodconfig gcc-16.1.0
sh allnoconfig gcc-16.1.0
sh allyesconfig gcc-16.1.0
sh defconfig gcc-16.1.0
sh randconfig-1000-20260926 gcc-10.5.0
sh randconfig-1001-20260926 gcc-12.5.0
sh se7751_defconfig gcc-16.1.0
sparc alldefconfig gcc-16.1.0
sparc allnoconfig gcc-16.1.0
sparc defconfig gcc-16.1.0
sparc randconfig-1000-20260926 gcc-14.3.0
sparc randconfig-1001-20260926 gcc-12.5.0
sparc64 allmodconfig clang-20
sparc64 defconfig clang-24
sparc64 randconfig-1000-20260926 clang-20
sparc64 randconfig-1001-20260926 gcc-9.5.0
um allmodconfig clang-17
um allnoconfig clang-17
um allyesconfig gcc-14
um defconfig clang-24
um i386_defconfig gcc-14
um randconfig-1000-20260926 gcc-14
um randconfig-1001-20260926 clang-17
um randconfig-r1307-20260926 gcc-14 sparse
um x86_64_defconfig clang-24
x86_64 allnoconfig clang-22
x86_64 buildonly-randconfig-1000-20260926 gcc-14
x86_64 buildonly-randconfig-1001-20260926 clang-22
x86_64 buildonly-randconfig-1002-20260926 gcc-14
x86_64 buildonly-randconfig-1003-20260926 gcc-14
x86_64 buildonly-randconfig-1004-20260926 gcc-14
x86_64 buildonly-randconfig-1005-20260926 gcc-14
x86_64 defconfig gcc-14
x86_64 randconfig-1000-20260926 gcc-14
x86_64 randconfig-1001-20260926 gcc-14
x86_64 randconfig-1002-20260926 clang-22
x86_64 randconfig-1003-20260926 gcc-14
x86_64 randconfig-1004-20260926 gcc-14
x86_64 randconfig-1005-20260926 gcc-14
x86_64 randconfig-1006-20260926 gcc-12
x86_64 randconfig-1007-20260926 clang-22
x86_64 randconfig-1008-20260926 clang-22
x86_64 randconfig-1009-20260926 gcc-14
x86_64 randconfig-1010-20260926 clang-22
x86_64 randconfig-1011-20260926 gcc-14
x86_64 randconfig-1012-20260926 clang-22
x86_64 randconfig-1013-20260926 gcc-14
x86_64 randconfig-1014-20260926 clang-22
x86_64 randconfig-1015-20260926 clang-22
x86_64 randconfig-1016-20260926 clang-22
x86_64 randconfig-1017-20260926 clang-22
x86_64 randconfig-1300-20260926 clang-22 sparse
x86_64 randconfig-1301-20260926 gcc-13 sparse
x86_64 randconfig-1302-20260926 gcc-13 sparse
x86_64 randconfig-r1306-20260926 clang-22 sparse
x86_64 rhel-9.4-rust clang-22
xtensa allnoconfig gcc-16.1.0
xtensa allyesconfig gcc-16.1.0
xtensa randconfig-1000-20260926 gcc-16.1.0
xtensa randconfig-1001-20260926 gcc-8.5.0
xtensa randconfig-r1302-20260926 gcc-11.5.0 sparse
xtensa randconfig-r1304-20260926 gcc-11.5.0 sparse
xtensa randconfig-r1308-20260926 gcc-15.2.0 sparse
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [akpm-mm:mm-new] BUILD REGRESSION b4fc90c82982d98959af08b4320420bcfc01303b
2026-09-27 8:00 [akpm-mm:mm-new] BUILD REGRESSION b4fc90c82982d98959af08b4320420bcfc01303b kernel test robot
@ 2026-09-27 18:04 ` Andrew Morton
2026-09-27 18:42 ` Suren Baghdasaryan
0 siblings, 1 reply; 3+ messages in thread
From: Andrew Morton @ 2026-09-27 18:04 UTC (permalink / raw)
To: kernel test robot
Cc: David Hildenbrand, Linux Memory Management List, mm-commits,
Suren Baghdasaryan
On Sun, 27 Sep 2026 16:00:49 +0800 kernel test robot <lkp@intel.com> wrote:
> tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-new
> branch HEAD: b4fc90c82982d98959af08b4320420bcfc01303b mm/swap, PM: hibernate: atomically replace hibernation pin
>
> Error/Warning (recently discovered and may have been fixed):
>
> https://lore.kernel.org/oe-kbuild-all/202609160337.WJiD9BqX-lkp@intel.com
> https://lore.kernel.org/oe-kbuild-all/202609171159.oaB1OaSG-lkp@intel.com
> https://lore.kernel.org/oe-kbuild-all/202609270030.Y0QVBPmK-lkp@intel.com
>
> aarch64-linux-ld: Unexpected GOT/PLT entries detected!
> aarch64-linux-ld: Unexpected run-time procedure linkages detected!
> arena.c:(.text+0x11fc): undefined reference to `__check_safe_pte_update'
> fs/proc/task_mmu.c:3450:17: error: implicit declaration of function 'drop_rcu' [-Werror=implicit-function-declaration]
> fs/proc/task_mmu.c:3450:3: error: call to undeclared function 'drop_rcu'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
> fs/proc/task_mmu.c:3450:3: error: implicit declaration of function 'drop_rcu'; did you mean 'drop_slab'? [-Werror=implicit-function-declaration]
> fs/proc/task_mmu.c:3452:17: error: implicit declaration of function 'reacquire_rcu' [-Werror=implicit-function-declaration]
> fs/proc/task_mmu.c:3452:3: error: call to undeclared function 'reacquire_rcu'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
> fs/proc/task_mmu.c:3452:3: error: implicit declaration of function 'reacquire_rcu'; did you mean 'get_file_rcu'? [-Werror=implicit-function-declaration]
> gup.c:(.text+0x2b48): undefined reference to `__check_safe_pte_update'
> hugetlbpage.c:(.text+0x1a8): undefined reference to `__check_safe_pte_update'
> memory.c:(.text+0x3418): undefined reference to `__check_safe_pte_update'
> mmu.c:(.text+0x9a8): undefined reference to `__check_safe_pte_update'
Thanks. Against "proc/task_mmu: remove unnecessary inlines in function
definitions":
From: Andrew Morton <akpm@linux-foundation.org>
Subject: proc-task_mmu-remove-unnecessary-inlines-in-function-definitions-fix
Date: Sun Sep 27 10:59:53 AM PDT 2026
fix CONFIG_NUMA=y && CONFIG_PROC_PAGE_MONITOR=n build
show_numa_map() uses drop_rcu() and reacquire_rcu(), but those helpers are
currently built only when CONFIG_PROC_PAGE_MONITOR is enabled. A kernel
with CONFIG_NUMA=y and CONFIG_PROC_PAGE_MONITOR=n therefore fails to build
with implicit declarations for both helpers.
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
fs/proc/task_mmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/proc/task_mmu.c~proc-task_mmu-remove-unnecessary-inlines-in-function-definitions-fix
+++ a/fs/proc/task_mmu.c
@@ -196,7 +196,7 @@ static bool fallback_to_mmap_lock(struct
return true;
}
-#ifdef CONFIG_PROC_PAGE_MONITOR
+#if defined(CONFIG_PROC_PAGE_MONITOR) || defined(CONFIG_NUMA)
static void drop_rcu(struct proc_maps_private *priv)
{
if (priv->lock_ctx.mmap_locked)
_
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [akpm-mm:mm-new] BUILD REGRESSION b4fc90c82982d98959af08b4320420bcfc01303b
2026-09-27 18:04 ` Andrew Morton
@ 2026-09-27 18:42 ` Suren Baghdasaryan
0 siblings, 0 replies; 3+ messages in thread
From: Suren Baghdasaryan @ 2026-09-27 18:42 UTC (permalink / raw)
To: Andrew Morton
Cc: kernel test robot, David Hildenbrand,
Linux Memory Management List, mm-commits
On Sun, Sep 27, 2026 at 11:04 AM Andrew Morton
<akpm@linux-foundation.org> wrote:
>
> On Sun, 27 Sep 2026 16:00:49 +0800 kernel test robot <lkp@intel.com> wrote:
>
> > tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-new
> > branch HEAD: b4fc90c82982d98959af08b4320420bcfc01303b mm/swap, PM: hibernate: atomically replace hibernation pin
> >
> > Error/Warning (recently discovered and may have been fixed):
> >
> > https://lore.kernel.org/oe-kbuild-all/202609160337.WJiD9BqX-lkp@intel.com
> > https://lore.kernel.org/oe-kbuild-all/202609171159.oaB1OaSG-lkp@intel.com
> > https://lore.kernel.org/oe-kbuild-all/202609270030.Y0QVBPmK-lkp@intel.com
> >
> > aarch64-linux-ld: Unexpected GOT/PLT entries detected!
> > aarch64-linux-ld: Unexpected run-time procedure linkages detected!
> > arena.c:(.text+0x11fc): undefined reference to `__check_safe_pte_update'
> > fs/proc/task_mmu.c:3450:17: error: implicit declaration of function 'drop_rcu' [-Werror=implicit-function-declaration]
> > fs/proc/task_mmu.c:3450:3: error: call to undeclared function 'drop_rcu'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
> > fs/proc/task_mmu.c:3450:3: error: implicit declaration of function 'drop_rcu'; did you mean 'drop_slab'? [-Werror=implicit-function-declaration]
> > fs/proc/task_mmu.c:3452:17: error: implicit declaration of function 'reacquire_rcu' [-Werror=implicit-function-declaration]
> > fs/proc/task_mmu.c:3452:3: error: call to undeclared function 'reacquire_rcu'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
> > fs/proc/task_mmu.c:3452:3: error: implicit declaration of function 'reacquire_rcu'; did you mean 'get_file_rcu'? [-Werror=implicit-function-declaration]
> > gup.c:(.text+0x2b48): undefined reference to `__check_safe_pte_update'
> > hugetlbpage.c:(.text+0x1a8): undefined reference to `__check_safe_pte_update'
> > memory.c:(.text+0x3418): undefined reference to `__check_safe_pte_update'
> > mmu.c:(.text+0x9a8): undefined reference to `__check_safe_pte_update'
>
> Thanks. Against "proc/task_mmu: remove unnecessary inlines in function
> definitions":
Thanks! LGTM.
>
>
> From: Andrew Morton <akpm@linux-foundation.org>
> Subject: proc-task_mmu-remove-unnecessary-inlines-in-function-definitions-fix
> Date: Sun Sep 27 10:59:53 AM PDT 2026
>
> fix CONFIG_NUMA=y && CONFIG_PROC_PAGE_MONITOR=n build
>
> show_numa_map() uses drop_rcu() and reacquire_rcu(), but those helpers are
> currently built only when CONFIG_PROC_PAGE_MONITOR is enabled. A kernel
> with CONFIG_NUMA=y and CONFIG_PROC_PAGE_MONITOR=n therefore fails to build
> with implicit declarations for both helpers.
>
> Cc: Suren Baghdasaryan <surenb@google.com>
> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
> ---
>
> fs/proc/task_mmu.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> --- a/fs/proc/task_mmu.c~proc-task_mmu-remove-unnecessary-inlines-in-function-definitions-fix
> +++ a/fs/proc/task_mmu.c
> @@ -196,7 +196,7 @@ static bool fallback_to_mmap_lock(struct
> return true;
> }
>
> -#ifdef CONFIG_PROC_PAGE_MONITOR
> +#if defined(CONFIG_PROC_PAGE_MONITOR) || defined(CONFIG_NUMA)
> static void drop_rcu(struct proc_maps_private *priv)
> {
> if (priv->lock_ctx.mmap_locked)
> _
>
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2026-09-27 18:43 UTC | newest]
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2026-09-27 8:00 [akpm-mm:mm-new] BUILD REGRESSION b4fc90c82982d98959af08b4320420bcfc01303b kernel test robot
2026-09-27 18:04 ` Andrew Morton
2026-09-27 18:42 ` Suren Baghdasaryan
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