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From: kernel test robot <lkp@intel.com>
To: Baokun Li <libaokun1@huawei.com>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
	Christian Brauner <christianvanbrauner@gmail.com>,
	Christian Brauner <brauner@kernel.org>
Subject: [brauner-vfs:vfs.misc 12/13] include/linux/fs.h:911:9: error: call to '__compiletime_assert_207' declared with 'error' attribute: Need native word sized stores/loads for atomicity.
Date: Tue, 23 Jan 2024 08:12:43 +0800	[thread overview]
Message-ID: <202401230837.TXro0PHi-lkp@intel.com> (raw)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git vfs.misc
head:   297983dc9011461cba6278bfe03f4305c4a2caa0
commit: 4bbd51d0f0ad709c0f02c100439d6c9ba6811d4b [12/13] fs: make the i_size_read/write helpers be smp_load_acquire/store_release()
config: i386-randconfig-015-20240123 (https://download.01.org/0day-ci/archive/20240123/202401230837.TXro0PHi-lkp@intel.com/config)
compiler: ClangBuiltLinux 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/20240123/202401230837.TXro0PHi-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/202401230837.TXro0PHi-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from fs/netfs/buffered_read.c:10:
   In file included from fs/netfs/internal.h:9:
   In file included from include/linux/seq_file.h:12:
>> include/linux/fs.h:911:9: error: call to '__compiletime_assert_207' declared with 'error' attribute: Need native word sized stores/loads for atomicity.
     911 |         return smp_load_acquire(&inode->i_size);
         |                ^
   include/asm-generic/barrier.h:206:2: note: expanded from macro 'smp_load_acquire'
     206 |         compiletime_assert_atomic_type(*p);                             \
         |         ^
   include/linux/compiler_types.h:438:2: note: expanded from macro 'compiletime_assert_atomic_type'
     438 |         compiletime_assert(__native_word(t),                            \
         |         ^
   include/linux/compiler_types.h:435:2: note: expanded from macro 'compiletime_assert'
     435 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^
   include/linux/compiler_types.h:423:2: note: expanded from macro '_compiletime_assert'
     423 |         __compiletime_assert(condition, msg, prefix, suffix)
         |         ^
   include/linux/compiler_types.h:416:4: note: expanded from macro '__compiletime_assert'
     416 |                         prefix ## suffix();                             \
         |                         ^
   <scratch space>:38:1: note: expanded from here
      38 | __compiletime_assert_207
         | ^
   1 error generated.
--
   In file included from fs/netfs/buffered_write.c:9:
>> include/linux/fs.h:911:9: error: call to '__compiletime_assert_207' declared with 'error' attribute: Need native word sized stores/loads for atomicity.
     911 |         return smp_load_acquire(&inode->i_size);
         |                ^
   include/asm-generic/barrier.h:206:2: note: expanded from macro 'smp_load_acquire'
     206 |         compiletime_assert_atomic_type(*p);                             \
         |         ^
   include/linux/compiler_types.h:438:2: note: expanded from macro 'compiletime_assert_atomic_type'
     438 |         compiletime_assert(__native_word(t),                            \
         |         ^
   include/linux/compiler_types.h:435:2: note: expanded from macro 'compiletime_assert'
     435 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^
   include/linux/compiler_types.h:423:2: note: expanded from macro '_compiletime_assert'
     423 |         __compiletime_assert(condition, msg, prefix, suffix)
         |         ^
   include/linux/compiler_types.h:416:4: note: expanded from macro '__compiletime_assert'
     416 |                         prefix ## suffix();                             \
         |                         ^
   <scratch space>:253:1: note: expanded from here
     253 | __compiletime_assert_207
         | ^
   In file included from fs/netfs/buffered_write.c:9:
>> include/linux/fs.h:911:9: error: call to '__compiletime_assert_207' declared with 'error' attribute: Need native word sized stores/loads for atomicity.
   include/asm-generic/barrier.h:206:2: note: expanded from macro 'smp_load_acquire'
     206 |         compiletime_assert_atomic_type(*p);                             \
         |         ^
   include/linux/compiler_types.h:438:2: note: expanded from macro 'compiletime_assert_atomic_type'
     438 |         compiletime_assert(__native_word(t),                            \
         |         ^
   include/linux/compiler_types.h:435:2: note: expanded from macro 'compiletime_assert'
     435 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^
   include/linux/compiler_types.h:423:2: note: expanded from macro '_compiletime_assert'
     423 |         __compiletime_assert(condition, msg, prefix, suffix)
         |         ^
   include/linux/compiler_types.h:416:4: note: expanded from macro '__compiletime_assert'
     416 |                         prefix ## suffix();                             \
         |                         ^
   <scratch space>:253:1: note: expanded from here
     253 | __compiletime_assert_207
         | ^
   In file included from fs/netfs/buffered_write.c:9:
>> include/linux/fs.h:911:9: error: call to '__compiletime_assert_207' declared with 'error' attribute: Need native word sized stores/loads for atomicity.
   include/asm-generic/barrier.h:206:2: note: expanded from macro 'smp_load_acquire'
     206 |         compiletime_assert_atomic_type(*p);                             \
         |         ^
   include/linux/compiler_types.h:438:2: note: expanded from macro 'compiletime_assert_atomic_type'
     438 |         compiletime_assert(__native_word(t),                            \
         |         ^
   include/linux/compiler_types.h:435:2: note: expanded from macro 'compiletime_assert'
     435 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^
   include/linux/compiler_types.h:423:2: note: expanded from macro '_compiletime_assert'
     423 |         __compiletime_assert(condition, msg, prefix, suffix)
         |         ^
   include/linux/compiler_types.h:416:4: note: expanded from macro '__compiletime_assert'
     416 |                         prefix ## suffix();                             \
         |                         ^
   <scratch space>:253:1: note: expanded from here
     253 | __compiletime_assert_207
         | ^
   In file included from fs/netfs/buffered_write.c:9:
>> include/linux/fs.h:911:9: error: call to '__compiletime_assert_207' declared with 'error' attribute: Need native word sized stores/loads for atomicity.
   include/asm-generic/barrier.h:206:2: note: expanded from macro 'smp_load_acquire'
     206 |         compiletime_assert_atomic_type(*p);                             \
         |         ^
   include/linux/compiler_types.h:438:2: note: expanded from macro 'compiletime_assert_atomic_type'
     438 |         compiletime_assert(__native_word(t),                            \
         |         ^
   include/linux/compiler_types.h:435:2: note: expanded from macro 'compiletime_assert'
     435 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^
   include/linux/compiler_types.h:423:2: note: expanded from macro '_compiletime_assert'
     423 |         __compiletime_assert(condition, msg, prefix, suffix)
         |         ^
   include/linux/compiler_types.h:416:4: note: expanded from macro '__compiletime_assert'
     416 |                         prefix ## suffix();                             \
         |                         ^
   <scratch space>:253:1: note: expanded from here
     253 | __compiletime_assert_207
         | ^
   4 errors generated.
--
   In file included from fs/netfs/misc.c:8:
   In file included from include/linux/swap.h:9:
   In file included from include/linux/memcontrol.h:13:
   In file included from include/linux/cgroup.h:17:
>> include/linux/fs.h:911:9: error: call to '__compiletime_assert_207' declared with 'error' attribute: Need native word sized stores/loads for atomicity.
     911 |         return smp_load_acquire(&inode->i_size);
         |                ^
   include/asm-generic/barrier.h:206:2: note: expanded from macro 'smp_load_acquire'
     206 |         compiletime_assert_atomic_type(*p);                             \
         |         ^
   include/linux/compiler_types.h:438:2: note: expanded from macro 'compiletime_assert_atomic_type'
     438 |         compiletime_assert(__native_word(t),                            \
         |         ^
   include/linux/compiler_types.h:435:2: note: expanded from macro 'compiletime_assert'
     435 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^
   include/linux/compiler_types.h:423:2: note: expanded from macro '_compiletime_assert'
     423 |         __compiletime_assert(condition, msg, prefix, suffix)
         |         ^
   include/linux/compiler_types.h:416:4: note: expanded from macro '__compiletime_assert'
     416 |                         prefix ## suffix();                             \
         |                         ^
   <scratch space>:251:1: note: expanded from here
     251 | __compiletime_assert_207
         | ^
   1 error generated.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for DRM_I915_DEBUG_GEM
   Depends on [n]: HAS_IOMEM [=y] && DRM_I915 [=y] && EXPERT [=y] && DRM_I915_WERROR [=n]
   Selected by [y]:
   - DRM_I915_DEBUG [=y] && HAS_IOMEM [=y] && DRM_I915 [=y] && EXPERT [=y] && !COMPILE_TEST [=n]


vim +911 include/linux/fs.h

   874	
   875	void filemap_invalidate_lock_two(struct address_space *mapping1,
   876					 struct address_space *mapping2);
   877	void filemap_invalidate_unlock_two(struct address_space *mapping1,
   878					   struct address_space *mapping2);
   879	
   880	
   881	/*
   882	 * NOTE: in a 32bit arch with a preemptable kernel and
   883	 * an UP compile the i_size_read/write must be atomic
   884	 * with respect to the local cpu (unlike with preempt disabled),
   885	 * but they don't need to be atomic with respect to other cpus like in
   886	 * true SMP (so they need either to either locally disable irq around
   887	 * the read or for example on x86 they can be still implemented as a
   888	 * cmpxchg8b without the need of the lock prefix). For SMP compiles
   889	 * and 64bit archs it makes no difference if preempt is enabled or not.
   890	 */
   891	static inline loff_t i_size_read(const struct inode *inode)
   892	{
   893	#if BITS_PER_LONG==32 && defined(CONFIG_SMP)
   894		loff_t i_size;
   895		unsigned int seq;
   896	
   897		do {
   898			seq = read_seqcount_begin(&inode->i_size_seqcount);
   899			i_size = inode->i_size;
   900		} while (read_seqcount_retry(&inode->i_size_seqcount, seq));
   901		return i_size;
   902	#elif BITS_PER_LONG==32 && defined(CONFIG_PREEMPTION)
   903		loff_t i_size;
   904	
   905		preempt_disable();
   906		i_size = inode->i_size;
   907		preempt_enable();
   908		return i_size;
   909	#else
   910		/* Pairs with smp_store_release() in i_size_write() */
 > 911		return smp_load_acquire(&inode->i_size);
   912	#endif
   913	}
   914	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

             reply	other threads:[~2024-01-23  0:13 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-01-23  0:12 kernel test robot [this message]
2024-01-23  7:07 ` [brauner-vfs:vfs.misc 12/13] include/linux/fs.h:911:9: error: call to '__compiletime_assert_207' declared with 'error' attribute: Need native word sized stores/loads for atomicity Baokun Li
2024-01-23 16:24   ` Christian Brauner
2024-01-24  7:52     ` Baokun Li
2024-01-24 10:30       ` Christian Brauner
2024-01-24 11:53         ` Baokun Li
2024-01-24 13:27           ` Christian Brauner
2024-01-24 13:38             ` Baokun Li
2024-01-23 17:46   ` Linus Torvalds
2024-01-24  7:31     ` Baokun Li

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