[norov:cpumask 1/2] include/linux/slab.h:608:46: error: conflicting types for 'kmalloc_node'; have 'void *(size_t, gfp_t, int)' {aka 'void *(unsigned int, unsigned int, int)'}
From: kernel test robot
Date: Mon Jun 06 2022 - 21:45:42 EST
tree: https://github.com/norov/linux cpumask
head: baf4c0c7943ff03b66ab7c18550df9071b5ba097
commit: 4fb0cdef75eb28ca37159b5c208ef574d6ccba98 [1/2] move cpumask
config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20220607/202206070941.bncwkp2B-lkp@xxxxxxxxx/config)
compiler: powerpc-linux-gcc (GCC) 11.3.0
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://github.com/norov/linux/commit/4fb0cdef75eb28ca37159b5c208ef574d6ccba98
git remote add norov https://github.com/norov/linux
git fetch --no-tags norov cpumask
git checkout 4fb0cdef75eb28ca37159b5c208ef574d6ccba98
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=powerpc prepare
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>
All errors (new ones prefixed by >>):
In file included from include/linux/smp.h:13,
from include/linux/lockdep.h:14,
from include/linux/spinlock.h:62,
from include/linux/ipc.h:5,
from include/uapi/linux/sem.h:5,
from include/linux/sem.h:5,
from include/linux/compat.h:14,
from arch/powerpc/kernel/asm-offsets.c:12:
include/linux/cpumask.h: In function 'alloc_cpumask_var_node':
include/linux/cpumask.h:812:17: error: implicit declaration of function 'kmalloc_node'; did you mean 'bitmap_alloc_node'? [-Werror=implicit-function-declaration]
812 | *mask = kmalloc_node(cpumask_size(), flags, node);
| ^~~~~~~~~~~~
| bitmap_alloc_node
include/linux/cpumask.h:812:15: warning: assignment to 'cpumask_var_t' {aka 'struct cpumask *'} from 'int' makes pointer from integer without a cast [-Wint-conversion]
812 | *mask = kmalloc_node(cpumask_size(), flags, node);
| ^
include/linux/cpumask.h: In function 'alloc_cpumask_var':
include/linux/cpumask.h:836:52: error: 'NUMA_NO_NODE' undeclared (first use in this function)
836 | return alloc_cpumask_var_node(mask, flags, NUMA_NO_NODE);
| ^~~~~~~~~~~~
include/linux/cpumask.h:836:52: note: each undeclared identifier is reported only once for each function it appears in
include/linux/cpumask.h: In function 'zalloc_cpumask_var_node':
include/linux/cpumask.h:841:53: error: '__GFP_ZERO' undeclared (first use in this function)
841 | return alloc_cpumask_var_node(mask, flags | __GFP_ZERO, node);
| ^~~~~~~~~~
include/linux/cpumask.h: In function 'zalloc_cpumask_var':
include/linux/cpumask.h:846:48: error: '__GFP_ZERO' undeclared (first use in this function)
846 | return alloc_cpumask_var(mask, flags | __GFP_ZERO);
| ^~~~~~~~~~
include/linux/cpumask.h: In function 'alloc_bootmem_cpumask_var':
include/linux/cpumask.h:860:17: error: implicit declaration of function 'memblock_alloc' [-Werror=implicit-function-declaration]
860 | *mask = memblock_alloc(cpumask_size(), SMP_CACHE_BYTES);
| ^~~~~~~~~~~~~~
include/linux/cpumask.h:860:15: warning: assignment to 'cpumask_var_t' {aka 'struct cpumask *'} from 'int' makes pointer from integer without a cast [-Wint-conversion]
860 | *mask = memblock_alloc(cpumask_size(), SMP_CACHE_BYTES);
| ^
include/linux/cpumask.h: In function 'free_cpumask_var':
include/linux/cpumask.h:874:9: error: implicit declaration of function 'kfree' [-Werror=implicit-function-declaration]
874 | kfree(mask);
| ^~~~~
include/linux/cpumask.h: In function 'free_bootmem_cpumask_var':
include/linux/cpumask.h:883:9: error: implicit declaration of function 'memblock_free' [-Werror=implicit-function-declaration]
883 | memblock_free(mask, cpumask_size());
| ^~~~~~~~~~~~~
In file included from include/linux/fs.h:45,
from include/linux/compat.h:17,
from arch/powerpc/kernel/asm-offsets.c:12:
include/linux/slab.h: At top level:
include/linux/slab.h:188:6: warning: conflicting types for 'kfree'; have 'void(const void *)'
188 | void kfree(const void *objp);
| ^~~~~
In file included from include/linux/smp.h:13,
from include/linux/lockdep.h:14,
from include/linux/spinlock.h:62,
from include/linux/ipc.h:5,
from include/uapi/linux/sem.h:5,
from include/linux/sem.h:5,
from include/linux/compat.h:14,
from arch/powerpc/kernel/asm-offsets.c:12:
include/linux/cpumask.h:874:9: note: previous implicit declaration of 'kfree' with type 'void(const void *)'
874 | kfree(mask);
| ^~~~~
In file included from include/linux/fs.h:45,
from include/linux/compat.h:17,
from arch/powerpc/kernel/asm-offsets.c:12:
>> include/linux/slab.h:608:46: error: conflicting types for 'kmalloc_node'; have 'void *(size_t, gfp_t, int)' {aka 'void *(unsigned int, unsigned int, int)'}
608 | static __always_inline __alloc_size(1) void *kmalloc_node(size_t size, gfp_t flags, int node)
| ^~~~~~~~~~~~
In file included from include/linux/smp.h:13,
from include/linux/lockdep.h:14,
from include/linux/spinlock.h:62,
from include/linux/ipc.h:5,
from include/uapi/linux/sem.h:5,
from include/linux/sem.h:5,
from include/linux/compat.h:14,
from arch/powerpc/kernel/asm-offsets.c:12:
include/linux/cpumask.h:812:17: note: previous implicit declaration of 'kmalloc_node' with type 'int()'
812 | *mask = kmalloc_node(cpumask_size(), flags, node);
| ^~~~~~~~~~~~
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:117: arch/powerpc/kernel/asm-offsets.s] Error 1
make[2]: Target '__build' not remade because of errors.
make[1]: *** [Makefile:1196: 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 +608 include/linux/slab.h
ce6a50263d4ddeb Christoph Lameter 2013-01-10 607
c37495d6254c237 Kees Cook 2021-11-05 @608 static __always_inline __alloc_size(1) void *kmalloc_node(size_t size, gfp_t flags, int node)
f1b6eb6e6be149b Christoph Lameter 2013-09-04 609 {
f1b6eb6e6be149b Christoph Lameter 2013-09-04 610 #ifndef CONFIG_SLOB
f1b6eb6e6be149b Christoph Lameter 2013-09-04 611 if (__builtin_constant_p(size) &&
cc252eae85e0955 Vlastimil Babka 2018-10-26 612 size <= KMALLOC_MAX_CACHE_SIZE) {
36071a279b4100a Alexey Dobriyan 2018-04-05 613 unsigned int i = kmalloc_index(size);
f1b6eb6e6be149b Christoph Lameter 2013-09-04 614
f1b6eb6e6be149b Christoph Lameter 2013-09-04 615 if (!i)
f1b6eb6e6be149b Christoph Lameter 2013-09-04 616 return ZERO_SIZE_PTR;
f1b6eb6e6be149b Christoph Lameter 2013-09-04 617
cc252eae85e0955 Vlastimil Babka 2018-10-26 618 return kmem_cache_alloc_node_trace(
cc252eae85e0955 Vlastimil Babka 2018-10-26 619 kmalloc_caches[kmalloc_type(flags)][i],
f1b6eb6e6be149b Christoph Lameter 2013-09-04 620 flags, node, size);
f1b6eb6e6be149b Christoph Lameter 2013-09-04 621 }
f1b6eb6e6be149b Christoph Lameter 2013-09-04 622 #endif
f1b6eb6e6be149b Christoph Lameter 2013-09-04 623 return __kmalloc_node(size, flags, node);
f1b6eb6e6be149b Christoph Lameter 2013-09-04 624 }
f1b6eb6e6be149b Christoph Lameter 2013-09-04 625
:::::: The code at line 608 was first introduced by commit
:::::: c37495d6254c237578db3121dcf79857e033f8ff slab: add __alloc_size attributes for better bounds checking
:::::: TO: Kees Cook <keescook@xxxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
--
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https://01.org/lkp