[mingo-tip:sched/headers 631/2375] arch/powerpc/include/asm/page_32.h:48:9: error: implicit declaration of function 'WARN_ON'

From: kernel test robot
Date: Sat Jan 08 2022 - 09:29:02 EST

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tree: git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git sched/headers
head: 351ceeab2ef96ab2fc306934ddb201b44636181b
commit: a657aeec64a85023d6fe6be475a83661c6abb5b8 [631/2375] headers/deps: Add header dependencies to .h files: <linux/atomic_api.h>
config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20220108/202201082245.1MS3SHJh-lkp@xxxxxxxxx/config)
compiler: powerpc-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git/commit/?id=a657aeec64a85023d6fe6be475a83661c6abb5b8
git remote add mingo-tip git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git
git fetch --no-tags mingo-tip sched/headers
git checkout a657aeec64a85023d6fe6be475a83661c6abb5b8
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc prepare

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

Note: the mingo-tip/sched/headers HEAD 351ceeab2ef96ab2fc306934ddb201b44636181b builds fine.
It only hurts bisectability.

All error/warnings (new ones prefixed by >>):

In file included from arch/powerpc/include/asm/page.h:249,
from arch/powerpc/include/asm/thread_info.h:13,
from include/linux/thread_info.h:61,
from arch/powerpc/include/asm/ptrace.h:323,
from arch/powerpc/include/asm/hw_irq.h:12,
from arch/powerpc/include/asm/irqflags.h:12,
from include/linux/irqflags.h:16,
from include/asm-generic/cmpxchg-local.h:6,
from arch/powerpc/include/asm/cmpxchg.h:526,
from arch/powerpc/include/asm/atomic.h:11,
from include/linux/atomic.h:7,
from include/linux/atomic_api.h:1,
from include/linux/jump_label.h:76,
from include/linux/dynamic_debug.h:6,
from include/linux/printk.h:559,
from include/asm-generic/bug.h:22,
from arch/powerpc/include/asm/bug.h:149,
from include/linux/bug.h:5,
from include/linux/page-flags.h:10,
from kernel/bounds.c:10:
arch/powerpc/include/asm/page_32.h: In function 'clear_page':
>> arch/powerpc/include/asm/page_32.h:48:9: error: implicit declaration of function 'WARN_ON' [-Werror=implicit-function-declaration]
48 | WARN_ON((unsigned long)addr & (L1_CACHE_BYTES - 1));
| ^~~~~~~
In file included from arch/powerpc/include/asm/hw_breakpoint.h:12,
from arch/powerpc/include/asm/processor.h:43,
from arch/powerpc/include/asm/thread_info.h:40,
from include/linux/thread_info.h:61,
from arch/powerpc/include/asm/ptrace.h:323,
from arch/powerpc/include/asm/hw_irq.h:12,
from arch/powerpc/include/asm/irqflags.h:12,
from include/linux/irqflags.h:16,
from include/asm-generic/cmpxchg-local.h:6,
from arch/powerpc/include/asm/cmpxchg.h:526,
from arch/powerpc/include/asm/atomic.h:11,
from include/linux/atomic.h:7,
from include/linux/atomic_api.h:1,
from include/linux/jump_label.h:76,
from include/linux/dynamic_debug.h:6,
from include/linux/printk.h:559,
from include/asm-generic/bug.h:22,
from arch/powerpc/include/asm/bug.h:149,
from include/linux/bug.h:5,
from include/linux/page-flags.h:10,
from kernel/bounds.c:10:
arch/powerpc/include/asm/cpu_has_feature.h: At top level:
>> arch/powerpc/include/asm/cpu_has_feature.h:21:31: error: array type has incomplete element type 'struct static_key_true'
21 | extern struct static_key_true cpu_feature_keys[NUM_CPU_FTR_KEYS];
| ^~~~~~~~~~~~~~~~
arch/powerpc/include/asm/cpu_has_feature.h: In function 'cpu_has_feature':
>> arch/powerpc/include/asm/cpu_has_feature.h:32:14: error: 'static_key_initialized' undeclared (first use in this function)
32 | if (!static_key_initialized) {
| ^~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/cpu_has_feature.h:32:14: note: each undeclared identifier is reported only once for each function it appears in
>> arch/powerpc/include/asm/cpu_has_feature.h:46:16: error: implicit declaration of function 'static_branch_likely' [-Werror=implicit-function-declaration]
46 | return static_branch_likely(&cpu_feature_keys[i]);
| ^~~~~~~~~~~~~~~~~~~~
>> arch/powerpc/include/asm/cpu_has_feature.h:25:13: warning: variable 'i' set but not used [-Wunused-but-set-variable]
25 | int i;
| ^
In file included from arch/powerpc/include/asm/ptrace.h:323,
from arch/powerpc/include/asm/hw_irq.h:12,
from arch/powerpc/include/asm/irqflags.h:12,
from include/linux/irqflags.h:16,
from include/asm-generic/cmpxchg-local.h:6,
from arch/powerpc/include/asm/cmpxchg.h:526,
from arch/powerpc/include/asm/atomic.h:11,
from include/linux/atomic.h:7,
from include/linux/atomic_api.h:1,
from include/linux/jump_label.h:76,
from include/linux/dynamic_debug.h:6,
from include/linux/printk.h:559,
from include/asm-generic/bug.h:22,
from arch/powerpc/include/asm/bug.h:149,
from include/linux/bug.h:5,
from include/linux/page-flags.h:10,
from kernel/bounds.c:10:
arch/powerpc/include/asm/thread_info.h: In function 'clear_thread_local_flags':
>> include/linux/thread_info.h:26:32: error: implicit declaration of function 'task_thread_info'; did you mean 'current_thread_info'? [-Werror=implicit-function-declaration]
26 | # define current_thread_info() task_thread_info(current)
| ^~~~~~~~~~~~~~~~
arch/powerpc/include/asm/thread_info.h:159:34: note: in expansion of macro 'current_thread_info'
159 | struct thread_info *ti = current_thread_info();
| ^~~~~~~~~~~~~~~~~~~
>> include/linux/thread_info.h:26:32: warning: initialization of 'struct thread_info *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
26 | # define current_thread_info() task_thread_info(current)
| ^~~~~~~~~~~~~~~~
arch/powerpc/include/asm/thread_info.h:159:34: note: in expansion of macro 'current_thread_info'
159 | struct thread_info *ti = current_thread_info();
| ^~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/thread_info.h: In function 'test_thread_local_flags':
>> include/linux/thread_info.h:26:32: warning: initialization of 'struct thread_info *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
26 | # define current_thread_info() task_thread_info(current)
| ^~~~~~~~~~~~~~~~
arch/powerpc/include/asm/thread_info.h:165:34: note: in expansion of macro 'current_thread_info'
165 | struct thread_info *ti = current_thread_info();
| ^~~~~~~~~~~~~~~~~~~
In file included from arch/powerpc/include/asm/ptrace.h:323,
from arch/powerpc/include/asm/hw_irq.h:12,
from arch/powerpc/include/asm/irqflags.h:12,
from include/linux/irqflags.h:16,
from include/asm-generic/cmpxchg-local.h:6,
from arch/powerpc/include/asm/cmpxchg.h:526,
from arch/powerpc/include/asm/atomic.h:11,
from include/linux/atomic.h:7,
from include/linux/atomic_api.h:1,
from include/linux/jump_label.h:76,
from include/linux/dynamic_debug.h:6,
from include/linux/printk.h:559,
from include/asm-generic/bug.h:22,
from arch/powerpc/include/asm/bug.h:149,
from include/linux/bug.h:5,
from include/linux/page-flags.h:10,
from kernel/bounds.c:10:
include/linux/thread_info.h: In function 'copy_overflow':
include/linux/thread_info.h:105:9: error: implicit declaration of function 'WARN' [-Werror=implicit-function-declaration]
105 | WARN(1, "Buffer overflow detected (%d < %lu)!\n", size, count);
| ^~~~
include/linux/thread_info.h: In function 'check_copy_size':
include/linux/thread_info.h:121:13: error: implicit declaration of function 'WARN_ON_ONCE' [-Werror=implicit-function-declaration]
121 | if (WARN_ON_ONCE(bytes > INT_MAX))
| ^~~~~~~~~~~~
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:121: kernel/bounds.s] Error 1
make[2]: Target '__build' not remade because of errors.
make[1]: *** [Makefile:1197: prepare0] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:219: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.

vim +/WARN_ON +48 arch/powerpc/include/asm/page_32.h

7ab0b7cb8951d4 arch/powerpc/include/asm/page_32.h Christophe Leroy 2019-08-16 38
5736f96d12dd42 arch/powerpc/include/asm/page_32.h Christophe Leroy 2016-02-09 39 /*
5736f96d12dd42 arch/powerpc/include/asm/page_32.h Christophe Leroy 2016-02-09 40 * Clear page using the dcbz instruction, which doesn't cause any
5736f96d12dd42 arch/powerpc/include/asm/page_32.h Christophe Leroy 2016-02-09 41 * memory traffic (except to write out any cache lines which get
5736f96d12dd42 arch/powerpc/include/asm/page_32.h Christophe Leroy 2016-02-09 42 * displaced). This only works on cacheable memory.
5736f96d12dd42 arch/powerpc/include/asm/page_32.h Christophe Leroy 2016-02-09 43 */
5736f96d12dd42 arch/powerpc/include/asm/page_32.h Christophe Leroy 2016-02-09 44 static inline void clear_page(void *addr)
5736f96d12dd42 arch/powerpc/include/asm/page_32.h Christophe Leroy 2016-02-09 45 {
5736f96d12dd42 arch/powerpc/include/asm/page_32.h Christophe Leroy 2016-02-09 46 unsigned int i;
5736f96d12dd42 arch/powerpc/include/asm/page_32.h Christophe Leroy 2016-02-09 47
7ab0b7cb8951d4 arch/powerpc/include/asm/page_32.h Christophe Leroy 2019-08-16 @48 WARN_ON((unsigned long)addr & (L1_CACHE_BYTES - 1));
7ab0b7cb8951d4 arch/powerpc/include/asm/page_32.h Christophe Leroy 2019-08-16 49
5736f96d12dd42 arch/powerpc/include/asm/page_32.h Christophe Leroy 2016-02-09 50 for (i = 0; i < PAGE_SIZE / L1_CACHE_BYTES; i++, addr += L1_CACHE_BYTES)
5736f96d12dd42 arch/powerpc/include/asm/page_32.h Christophe Leroy 2016-02-09 51 dcbz(addr);
5736f96d12dd42 arch/powerpc/include/asm/page_32.h Christophe Leroy 2016-02-09 52 }
5cd16ee934eafc include/asm-powerpc/page_32.h Michael Ellerman 2005-11-11 53 extern void copy_page(void *to, void *from);
5cd16ee934eafc include/asm-powerpc/page_32.h Michael Ellerman 2005-11-11 54

:::::: The code at line 48 was first introduced by commit
:::::: 7ab0b7cb8951d4095d73e203759b74d41916e455 powerpc/32: Add warning on misaligned copy_page() or clear_page()

:::::: TO: Christophe Leroy <christophe.leroy@xxxxxx>
:::::: CC: Michael Ellerman <mpe@xxxxxxxxxxxxxx>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

Next message: trix: "[PATCH] can: janz-ican3: initialize dlc variable"
Previous message: Christophe JAILLET: "[PATCH] net: alteon: Simplify DMA setting"
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