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Message-ID: <202204181455.Fc3fM9NR-lkp@intel.com>
Date: Mon, 18 Apr 2022 14:53:19 +0800
From: kernel test robot <lkp@...el.com>
To: Yury Norov <yury.norov@...il.com>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [norov:bitmap 45/47] include/linux/bitmap.h:305:25: warning: cast to
pointer from integer of different size
tree: https://github.com/norov/linux bitmap
head: 45a9e3feb171ccf077979b7ff6a0c6a732cfc17b
commit: 1a21df17d726b4f3c19a148e10d09ec632603f1c [45/47] lib: add bitmap_{from,to}_arr64
config: um-i386_defconfig (https://download.01.org/0day-ci/archive/20220418/202204181455.Fc3fM9NR-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.2.0-19) 11.2.0
reproduce (this is a W=1 build):
# https://github.com/norov/linux/commit/1a21df17d726b4f3c19a148e10d09ec632603f1c
git remote add norov https://github.com/norov/linux
git fetch --no-tags norov bitmap
git checkout 1a21df17d726b4f3c19a148e10d09ec632603f1c
# save the config file to linux build tree
mkdir build_dir
make W=1 O=build_dir ARCH=um SUBARCH=i386 prepare
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
In file included from include/linux/cpumask.h:12,
from include/linux/smp.h:13,
from include/linux/lockdep.h:14,
from include/linux/rcupdate.h:29,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
include/linux/bitmap.h: In function 'bitmap_from_u64':
>> include/linux/bitmap.h:305:25: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
305 | (const unsigned long *) (buf), (nbits))
| ^
include/linux/bitmap.h:615:16: note: in expansion of macro 'bitmap_from_arr64'
615 | return bitmap_from_arr64(dst, mask, 64);
| ^~~~~~~~~~~~~~~~~
In file included from arch/um/kernel/asm-offsets.c:1:
arch/x86/um/shared/sysdep/kernel-offsets.h: At top level:
arch/x86/um/shared/sysdep/kernel-offsets.h:9:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes]
9 | void foo(void)
| ^~~
--
In file included from include/linux/cpumask.h:12,
from include/linux/mm_types_task.h:14,
from include/linux/mm_types.h:5,
from include/linux/buildid.h:5,
from include/linux/module.h:14,
from arch/um/kernel/exec.c:7:
include/linux/bitmap.h: In function 'bitmap_from_u64':
>> include/linux/bitmap.h:305:25: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
305 | (const unsigned long *) (buf), (nbits))
| ^
include/linux/bitmap.h:615:16: note: in expansion of macro 'bitmap_from_arr64'
615 | return bitmap_from_arr64(dst, mask, 64);
| ^~~~~~~~~~~~~~~~~
--
In file included from include/linux/cpumask.h:12,
from arch/um/kernel/irq.c:10:
include/linux/bitmap.h: In function 'bitmap_from_u64':
>> include/linux/bitmap.h:305:25: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
305 | (const unsigned long *) (buf), (nbits))
| ^
include/linux/bitmap.h:615:16: note: in expansion of macro 'bitmap_from_arr64'
615 | return bitmap_from_arr64(dst, mask, 64);
| ^~~~~~~~~~~~~~~~~
arch/um/kernel/irq.c: At top level:
arch/um/kernel/irq.c:646:13: warning: no previous prototype for 'init_IRQ' [-Wmissing-prototypes]
646 | void __init init_IRQ(void)
| ^~~~~~~~
--
In file included from include/linux/cpumask.h:12,
from include/linux/mm_types_task.h:14,
from include/linux/mm_types.h:5,
from include/linux/buildid.h:5,
from include/linux/module.h:14,
from arch/um/kernel/mem.c:7:
include/linux/bitmap.h: In function 'bitmap_from_u64':
>> include/linux/bitmap.h:305:25: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
305 | (const unsigned long *) (buf), (nbits))
| ^
include/linux/bitmap.h:615:16: note: in expansion of macro 'bitmap_from_arr64'
615 | return bitmap_from_arr64(dst, mask, 64);
| ^~~~~~~~~~~~~~~~~
arch/um/kernel/mem.c: At top level:
arch/um/kernel/mem.c:183:8: warning: no previous prototype for 'pgd_alloc' [-Wmissing-prototypes]
183 | pgd_t *pgd_alloc(struct mm_struct *mm)
| ^~~~~~~~~
arch/um/kernel/mem.c:196:7: warning: no previous prototype for 'uml_kmalloc' [-Wmissing-prototypes]
196 | void *uml_kmalloc(int size, int flags)
| ^~~~~~~~~~~
--
In file included from include/linux/cpumask.h:12,
from include/linux/smp.h:13,
from include/linux/percpu.h:7,
from include/linux/context_tracking_state.h:5,
from include/linux/hardirq.h:5,
from arch/um/kernel/process.c:11:
include/linux/bitmap.h: In function 'bitmap_from_u64':
>> include/linux/bitmap.h:305:25: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
305 | (const unsigned long *) (buf), (nbits))
| ^
include/linux/bitmap.h:615:16: note: in expansion of macro 'bitmap_from_arr64'
615 | return bitmap_from_arr64(dst, mask, 64);
| ^~~~~~~~~~~~~~~~~
arch/um/kernel/process.c: At top level:
arch/um/kernel/process.c:50:5: warning: no previous prototype for 'pid_to_processor_id' [-Wmissing-prototypes]
50 | int pid_to_processor_id(int pid)
| ^~~~~~~~~~~~~~~~~~~
arch/um/kernel/process.c:86:7: warning: no previous prototype for '__switch_to' [-Wmissing-prototypes]
86 | void *__switch_to(struct task_struct *from, struct task_struct *to)
| ^~~~~~~~~~~
arch/um/kernel/process.c: In function 'new_thread_handler':
arch/um/kernel/process.c:121:28: warning: variable 'n' set but not used [-Wunused-but-set-variable]
121 | int (*fn)(void *), n;
| ^
arch/um/kernel/process.c: At top level:
arch/um/kernel/process.c:139:6: warning: no previous prototype for 'fork_handler' [-Wmissing-prototypes]
139 | void fork_handler(void)
| ^~~~~~~~~~~~
arch/um/kernel/process.c:215:6: warning: no previous prototype for 'arch_cpu_idle' [-Wmissing-prototypes]
215 | void arch_cpu_idle(void)
| ^~~~~~~~~~~~~
arch/um/kernel/process.c:252:5: warning: no previous prototype for 'copy_to_user_proc' [-Wmissing-prototypes]
252 | int copy_to_user_proc(void __user *to, void *from, int size)
| ^~~~~~~~~~~~~~~~~
arch/um/kernel/process.c:262:5: warning: no previous prototype for 'clear_user_proc' [-Wmissing-prototypes]
262 | int clear_user_proc(void __user *buf, int size)
| ^~~~~~~~~~~~~~~
arch/um/kernel/process.c:315:12: warning: no previous prototype for 'make_proc_sysemu' [-Wmissing-prototypes]
315 | int __init make_proc_sysemu(void)
| ^~~~~~~~~~~~~~~~
arch/um/kernel/process.c:355:15: warning: no previous prototype for 'arch_align_stack' [-Wmissing-prototypes]
355 | unsigned long arch_align_stack(unsigned long sp)
| ^~~~~~~~~~~~~~~~
--
In file included from include/linux/cpumask.h:12,
from include/linux/smp.h:13,
from include/linux/lockdep.h:14,
from include/linux/rcupdate.h:29,
from include/linux/rculist.h:11,
from include/linux/sched/signal.h:5,
from arch/um/kernel/reboot.c:6:
include/linux/bitmap.h: In function 'bitmap_from_u64':
>> include/linux/bitmap.h:305:25: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
305 | (const unsigned long *) (buf), (nbits))
| ^
include/linux/bitmap.h:615:16: note: in expansion of macro 'bitmap_from_arr64'
615 | return bitmap_from_arr64(dst, mask, 64);
| ^~~~~~~~~~~~~~~~~
arch/um/kernel/reboot.c: At top level:
arch/um/kernel/reboot.c:45:6: warning: no previous prototype for 'machine_restart' [-Wmissing-prototypes]
45 | void machine_restart(char * __unused)
| ^~~~~~~~~~~~~~~
arch/um/kernel/reboot.c:51:6: warning: no previous prototype for 'machine_power_off' [-Wmissing-prototypes]
51 | void machine_power_off(void)
| ^~~~~~~~~~~~~~~~~
arch/um/kernel/reboot.c:57:6: warning: no previous prototype for 'machine_halt' [-Wmissing-prototypes]
57 | void machine_halt(void)
| ^~~~~~~~~~~~
--
In file included from include/linux/cpumask.h:12,
from include/linux/smp.h:13,
from include/linux/lockdep.h:14,
from include/linux/spinlock.h:62,
from include/linux/debugobjects.h:6,
from include/linux/timer.h:8,
from include/linux/clocksource.h:17,
from include/linux/clockchips.h:14,
from arch/um/kernel/time.c:10:
include/linux/bitmap.h: In function 'bitmap_from_u64':
>> include/linux/bitmap.h:305:25: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
305 | (const unsigned long *) (buf), (nbits))
| ^
include/linux/bitmap.h:615:16: note: in expansion of macro 'bitmap_from_arr64'
615 | return bitmap_from_arr64(dst, mask, 64);
| ^~~~~~~~~~~~~~~~~
arch/um/kernel/time.c: At top level:
arch/um/kernel/time.c:778:13: warning: no previous prototype for 'time_init' [-Wmissing-prototypes]
778 | void __init time_init(void)
| ^~~~~~~~~
--
In file included from include/linux/cpumask.h:12,
from include/linux/smp.h:13,
from include/linux/lockdep.h:14,
from include/linux/spinlock.h:62,
from include/linux/mmzone.h:8,
from include/linux/gfp.h:6,
from include/linux/mm.h:7,
from arch/um/kernel/tlb.c:6:
include/linux/bitmap.h: In function 'bitmap_from_u64':
>> include/linux/bitmap.h:305:25: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
305 | (const unsigned long *) (buf), (nbits))
| ^
include/linux/bitmap.h:615:16: note: in expansion of macro 'bitmap_from_arr64'
615 | return bitmap_from_arr64(dst, mask, 64);
| ^~~~~~~~~~~~~~~~~
arch/um/kernel/tlb.c: At top level:
arch/um/kernel/tlb.c:317:6: warning: no previous prototype for 'fix_range_common' [-Wmissing-prototypes]
317 | void fix_range_common(struct mm_struct *mm, unsigned long start_addr,
| ^~~~~~~~~~~~~~~~
arch/um/kernel/tlb.c:579:6: warning: no previous prototype for 'flush_tlb_mm_range' [-Wmissing-prototypes]
579 | void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start,
| ^~~~~~~~~~~~~~~~~~
arch/um/kernel/tlb.c:595:6: warning: no previous prototype for 'force_flush_all' [-Wmissing-prototypes]
595 | void force_flush_all(void)
| ^~~~~~~~~~~~~~~
--
In file included from include/linux/cpumask.h:12,
from include/linux/smp.h:13,
from include/linux/lockdep.h:14,
from include/linux/rcupdate.h:29,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from include/linux/delay.h:23,
from arch/um/kernel/um_arch.c:6:
include/linux/bitmap.h: In function 'bitmap_from_u64':
>> include/linux/bitmap.h:305:25: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
305 | (const unsigned long *) (buf), (nbits))
| ^
include/linux/bitmap.h:615:16: note: in expansion of macro 'bitmap_from_arr64'
615 | return bitmap_from_arr64(dst, mask, 64);
| ^~~~~~~~~~~~~~~~~
arch/um/kernel/um_arch.c: At top level:
arch/um/kernel/um_arch.c:402:19: warning: no previous prototype for 'read_initrd' [-Wmissing-prototypes]
402 | int __init __weak read_initrd(void)
| ^~~~~~~~~~~
arch/um/kernel/um_arch.c:421:13: warning: no previous prototype for 'check_bugs' [-Wmissing-prototypes]
421 | void __init check_bugs(void)
| ^~~~~~~~~~
arch/um/kernel/um_arch.c:439:7: warning: no previous prototype for 'text_poke' [-Wmissing-prototypes]
439 | void *text_poke(void *addr, const void *opcode, size_t len)
| ^~~~~~~~~
arch/um/kernel/um_arch.c:451:6: warning: no previous prototype for 'text_poke_sync' [-Wmissing-prototypes]
451 | void text_poke_sync(void)
| ^~~~~~~~~~~~~~
--
In file included from include/linux/cpumask.h:12,
from include/linux/smp.h:13,
from include/linux/lockdep.h:14,
from include/linux/spinlock.h:62,
from arch/um/kernel/kmsg_dump.c:3:
include/linux/bitmap.h: In function 'bitmap_from_u64':
>> include/linux/bitmap.h:305:25: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
305 | (const unsigned long *) (buf), (nbits))
| ^
include/linux/bitmap.h:615:16: note: in expansion of macro 'bitmap_from_arr64'
615 | return bitmap_from_arr64(dst, mask, 64);
| ^~~~~~~~~~~~~~~~~
arch/um/kernel/kmsg_dump.c: At top level:
arch/um/kernel/kmsg_dump.c:54:12: warning: no previous prototype for 'kmsg_dumper_stdout_init' [-Wmissing-prototypes]
54 | int __init kmsg_dumper_stdout_init(void)
| ^~~~~~~~~~~~~~~~~~~~~~~
--
In file included from include/linux/cpumask.h:12,
from include/linux/smp.h:13,
from include/linux/lockdep.h:14,
from include/linux/spinlock.h:62,
from include/linux/mmzone.h:8,
from include/linux/gfp.h:6,
from include/linux/mm.h:7,
from arch/um/kernel/skas/mmu.c:7:
include/linux/bitmap.h: In function 'bitmap_from_u64':
>> include/linux/bitmap.h:305:25: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
305 | (const unsigned long *) (buf), (nbits))
| ^
include/linux/bitmap.h:615:16: note: in expansion of macro 'bitmap_from_arr64'
615 | return bitmap_from_arr64(dst, mask, 64);
| ^~~~~~~~~~~~~~~~~
arch/um/kernel/skas/mmu.c: At top level:
arch/um/kernel/skas/mmu.c:17:5: warning: no previous prototype for 'init_new_context' [-Wmissing-prototypes]
17 | int init_new_context(struct task_struct *task, struct mm_struct *mm)
| ^~~~~~~~~~~~~~~~
arch/um/kernel/skas/mmu.c:60:6: warning: no previous prototype for 'destroy_context' [-Wmissing-prototypes]
60 | void destroy_context(struct mm_struct *mm)
| ^~~~~~~~~~~~~~~
..
vim +305 include/linux/bitmap.h
292
293 /*
294 * On 64-bit systems bitmaps are represented as u64 arrays internally. On LE32
295 * machines the order of hi and lo parts of nubmers match the bitmap structure.
296 * In both cases conversion is not needed when copying data from/to arrays of
297 * u64.
298 */
299 #if (BITS_PER_LONG == 32) && defined (__BIG_ENDIAN)
300 void bitmap_from_arr64(unsigned long *bitmap, const u64 *buf, unsigned int nbits);
301 void bitmap_to_arr64(u64 *buf, const unsigned long *bitmap, unsigned int nbits);
302 #else
303 #define bitmap_from_arr64(bitmap, buf, nbits) \
304 bitmap_copy_clear_tail((unsigned long *) (bitmap), \
> 305 (const unsigned long *) (buf), (nbits))
306 #define bitmap_to_arr64(buf, bitmap, nbits) \
307 bitmap_copy_clear_tail((unsigned long *) (buf), \
308 (const unsigned long *) (bitmap), (nbits))
309 #endif
310
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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