From: kernel test robot <lkp@intel.com>
To: oe-kbuild@lists.linux.dev
Cc: lkp@intel.com
Subject: include/asm-generic/bitops/lock.h:63:15: sparse: sparse: cast from unknown type
Date: Sun, 3 Dec 2023 18:38:57 +0800 [thread overview]
Message-ID: <202312031857.agi3d4au-lkp@intel.com> (raw)
::::::
:::::: Manual check reason: "low confidence static check first_new_problem: include/asm-generic/bitops/lock.h:63:15: sparse: sparse: cast from unknown type"
::::::
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: Will Deacon <will@kernel.org>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 968f35f4ab1c0966ceb39af3c89f2e24afedf878
commit: a5460b5e5fb82656807840d40d3deaecad094044 READ_ONCE: Simplify implementations of {READ,WRITE}_ONCE()
date: 3 years, 8 months ago
:::::: branch date: 10 hours ago
:::::: commit date: 3 years, 8 months ago
config: sparc64-randconfig-r112-20231130 (https://download.01.org/0day-ci/archive/20231203/202312031857.agi3d4au-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231203/202312031857.agi3d4au-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/r/202312031857.agi3d4au-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
include/asm-generic/atomic-long.h:997:1: sparse: sparse: Expected ; at the end of type declaration
include/asm-generic/atomic-long.h:997:1: sparse: sparse: got }
include/asm-generic/atomic-long.h:1003:1: sparse: sparse: Expected ; at the end of type declaration
include/asm-generic/atomic-long.h:1003:1: sparse: sparse: got }
include/asm-generic/atomic-long.h:1009:1: sparse: sparse: Expected ; at the end of type declaration
include/asm-generic/atomic-long.h:1009:1: sparse: sparse: got }
arch/sparc/vdso/vdso32/vclock_gettime.c: note: in included file (through arch/sparc/include/asm/bitops_64.h, arch/sparc/include/asm/bitops.h, include/linux/bitops.h, ...):
include/asm-generic/bitops/lock.h:24:11: sparse: sparse: Expected ; at end of declaration
include/asm-generic/bitops/lock.h:24:11: sparse: sparse: got +=
include/asm-generic/bitops/lock.h:25:13: sparse: sparse: Expected ) in function declarator
include/asm-generic/bitops/lock.h:25:13: sparse: sparse: got (
include/asm-generic/bitops/lock.h:25:9: sparse: sparse: Trying to use reserved word 'if' as identifier
include/asm-generic/bitops/lock.h:25:13: sparse: sparse: Trying to use reserved word 'do' as identifier
include/asm-generic/bitops/lock.h:25:13: sparse: sparse: Expected ; at end of declaration
include/asm-generic/bitops/lock.h:25:13: sparse: sparse: got {
include/asm-generic/bitops/lock.h:25:13: sparse: sparse: Expected ; at the end of type declaration
include/asm-generic/bitops/lock.h:25:13: sparse: sparse: got }
include/asm-generic/bitops/lock.h:28:66: sparse: sparse: No right hand side of '*'-expression
include/asm-generic/bitops/lock.h:28:67: sparse: sparse: Expected ) in function call
include/asm-generic/bitops/lock.h:28:67: sparse: sparse: got p
include/asm-generic/bitops/lock.h:29:9: sparse: sparse: Trying to use reserved word 'return' as identifier
include/asm-generic/bitops/lock.h:29:16: sparse: sparse: Expected ; at end of declaration
include/asm-generic/bitops/lock.h:29:16: sparse: sparse: got !
include/asm-generic/bitops/lock.h:30:1: sparse: sparse: Expected ; at the end of type declaration
include/asm-generic/bitops/lock.h:30:1: sparse: sparse: got }
include/asm-generic/bitops/lock.h:43:42: sparse: sparse: Expected ) in function declarator
include/asm-generic/bitops/lock.h:43:42: sparse: sparse: got (
include/asm-generic/bitops/lock.h:44:1: sparse: sparse: Expected ; at the end of type declaration
include/asm-generic/bitops/lock.h:44:1: sparse: sparse: got }
include/asm-generic/bitops/lock.h:62:11: sparse: sparse: Expected ; at end of declaration
include/asm-generic/bitops/lock.h:62:11: sparse: sparse: got +=
include/asm-generic/bitops/lock.h:64:13: sparse: sparse: Expected ; at end of declaration
include/asm-generic/bitops/lock.h:64:13: sparse: sparse: got &=
include/asm-generic/bitops/lock.h:65:33: sparse: sparse: Expected ) in function declarator
include/asm-generic/bitops/lock.h:65:33: sparse: sparse: got (
include/asm-generic/bitops/lock.h:66:1: sparse: sparse: Expected ; at the end of type declaration
include/asm-generic/bitops/lock.h:66:1: sparse: sparse: got }
include/asm-generic/bitops/lock.h:84:11: sparse: sparse: Expected ; at end of declaration
include/asm-generic/bitops/lock.h:84:11: sparse: sparse: got +=
include/asm-generic/bitops/lock.h:85:70: sparse: sparse: No right hand side of '*'-expression
include/asm-generic/bitops/lock.h:85:71: sparse: sparse: Expected ) in function call
include/asm-generic/bitops/lock.h:85:71: sparse: sparse: got p
include/asm-generic/bitops/lock.h:86:9: sparse: sparse: Trying to use reserved word 'return' as identifier
include/asm-generic/bitops/lock.h:86:16: sparse: sparse: Expected ; at end of declaration
include/asm-generic/bitops/lock.h:86:16: sparse: sparse: got !
include/asm-generic/bitops/lock.h:87:1: sparse: sparse: Expected ; at the end of type declaration
include/asm-generic/bitops/lock.h:87:1: sparse: sparse: got }
arch/sparc/vdso/vdso32/vclock_gettime.c: note: in included file (through include/linux/atomic.h, include/asm-generic/bitops/lock.h, arch/sparc/include/asm/bitops_64.h, ...):
include/linux/atomic-fallback.h:2028:13: sparse: sparse: undefined identifier 'v'
include/linux/atomic-fallback.h:2028:13: sparse: sparse: undefined identifier 'v'
include/linux/atomic-fallback.h:2028:13: sparse: sparse: undefined identifier 'o'
include/linux/atomic-fallback.h:2028:13: sparse: sparse: undefined identifier 'v'
include/linux/atomic-fallback.h:2028:13: sparse: sparse: undefined identifier 'new'
include/linux/atomic-fallback.h:2028:13: sparse: sparse: undefined identifier 'v'
include/linux/atomic-fallback.h:2028:13: sparse: sparse: undefined identifier 'v'
include/linux/atomic-fallback.h:2028:13: sparse: sparse: cast from unknown type
include/linux/atomic-fallback.h:2041:13: sparse: sparse: undefined identifier 'v'
include/linux/atomic-fallback.h:2041:13: sparse: sparse: undefined identifier 'v'
include/linux/atomic-fallback.h:2041:13: sparse: sparse: undefined identifier 'o'
include/linux/atomic-fallback.h:2041:13: sparse: sparse: undefined identifier 'v'
include/linux/atomic-fallback.h:2041:13: sparse: sparse: undefined identifier 'new'
include/linux/atomic-fallback.h:2041:13: sparse: sparse: undefined identifier 'v'
include/linux/atomic-fallback.h:2041:13: sparse: sparse: undefined identifier 'v'
include/linux/atomic-fallback.h:2041:13: sparse: sparse: cast from unknown type
include/linux/atomic-fallback.h:2041:9: sparse: sparse: symbol 'r' has multiple initializers (originally initialized at include/linux/atomic-fallback.h:2028)
include/linux/atomic-fallback.h:2054:13: sparse: sparse: undefined identifier 'v'
include/linux/atomic-fallback.h:2054:13: sparse: sparse: undefined identifier 'v'
include/linux/atomic-fallback.h:2054:13: sparse: sparse: undefined identifier 'o'
include/linux/atomic-fallback.h:2054:13: sparse: sparse: undefined identifier 'v'
include/linux/atomic-fallback.h:2054:13: sparse: sparse: undefined identifier 'new'
include/linux/atomic-fallback.h:2054:13: sparse: sparse: undefined identifier 'v'
include/linux/atomic-fallback.h:2054:13: sparse: sparse: undefined identifier 'v'
include/linux/atomic-fallback.h:2054:13: sparse: sparse: cast from unknown type
include/linux/atomic-fallback.h:2054:9: sparse: sparse: symbol 'r' has multiple initializers (originally initialized at include/linux/atomic-fallback.h:2041)
include/linux/atomic-fallback.h:2067:13: sparse: sparse: undefined identifier 'v'
include/linux/atomic-fallback.h:2067:13: sparse: sparse: undefined identifier 'v'
include/linux/atomic-fallback.h:2067:13: sparse: sparse: undefined identifier 'o'
include/linux/atomic-fallback.h:2067:13: sparse: sparse: undefined identifier 'v'
include/linux/atomic-fallback.h:2067:13: sparse: sparse: undefined identifier 'new'
include/linux/atomic-fallback.h:2067:13: sparse: sparse: undefined identifier 'v'
include/linux/atomic-fallback.h:2067:13: sparse: sparse: undefined identifier 'v'
include/linux/atomic-fallback.h:2067:13: sparse: sparse: cast from unknown type
include/linux/atomic-fallback.h:2067:9: sparse: sparse: symbol 'r' has multiple initializers (originally initialized at include/linux/atomic-fallback.h:2054)
arch/sparc/vdso/vdso32/vclock_gettime.c: note: in included file (through include/linux/atomic.h, include/asm-generic/bitops/lock.h, arch/sparc/include/asm/bitops_64.h, ...):
include/asm-generic/atomic-long.h:906:16: sparse: sparse: undefined identifier 'v'
include/asm-generic/atomic-long.h:906:16: sparse: sparse: undefined identifier 'new'
include/asm-generic/atomic-long.h:912:16: sparse: sparse: undefined identifier 'v'
include/asm-generic/atomic-long.h:912:16: sparse: sparse: undefined identifier 'new'
include/asm-generic/atomic-long.h:912:16: sparse: sparse: symbol '_n_' has multiple initializers (originally initialized at include/asm-generic/atomic-long.h:906)
include/asm-generic/atomic-long.h:918:16: sparse: sparse: undefined identifier 'v'
include/asm-generic/atomic-long.h:918:16: sparse: sparse: undefined identifier 'new'
include/asm-generic/atomic-long.h:918:16: sparse: sparse: symbol '_n_' has multiple initializers (originally initialized at include/asm-generic/atomic-long.h:912)
include/asm-generic/atomic-long.h:924:16: sparse: sparse: undefined identifier 'v'
include/asm-generic/atomic-long.h:924:16: sparse: sparse: undefined identifier 'new'
include/asm-generic/atomic-long.h:924:16: sparse: sparse: symbol '_n_' has multiple initializers (originally initialized at include/asm-generic/atomic-long.h:918)
arch/sparc/vdso/vdso32/vclock_gettime.c: note: in included file (through arch/sparc/include/asm/bitops_64.h, arch/sparc/include/asm/bitops.h, include/linux/bitops.h, ...):
include/asm-generic/bitops/lock.h:22:30: sparse: sparse: undefined identifier 'nr'
include/asm-generic/bitops/lock.h:28:15: sparse: sparse: undefined identifier 'atomic_long_fetch_or_acquire'
include/asm-generic/bitops/lock.h:63:15: sparse: sparse: cannot dereference this type
include/asm-generic/bitops/lock.h:63:15: sparse: sparse: cannot dereference this type
>> include/asm-generic/bitops/lock.h:63:15: sparse: sparse: cast from unknown type
include/asm-generic/bitops/lock.h:63:15: sparse: sparse: cannot dereference this type
include/asm-generic/bitops/lock.h:63:9: sparse: sparse: symbol 'old' has multiple initializers (originally initialized at include/asm-generic/bitops/lock.h:28)
include/asm-generic/bitops/lock.h:82:30: sparse: sparse: undefined identifier 'nr'
include/asm-generic/bitops/lock.h:82:23: sparse: sparse: symbol 'mask' has multiple initializers (originally initialized at include/asm-generic/bitops/lock.h:22)
include/asm-generic/bitops/lock.h:85:55: sparse: sparse: undefined identifier 'atomic_long_t'
include/asm-generic/bitops/lock.h:85:9: sparse: sparse: symbol 'old' has multiple initializers (originally initialized at include/asm-generic/bitops/lock.h:63)
vim +63 include/asm-generic/bitops/lock.h
26333576fd0d0b Nick Piggin 2007-10-18 45
26333576fd0d0b Nick Piggin 2007-10-18 46 /**
26333576fd0d0b Nick Piggin 2007-10-18 47 * __clear_bit_unlock - Clear a bit in memory, for unlock
26333576fd0d0b Nick Piggin 2007-10-18 48 * @nr: the bit to set
26333576fd0d0b Nick Piggin 2007-10-18 49 * @addr: the address to start counting from
26333576fd0d0b Nick Piggin 2007-10-18 50 *
f75d48644c56a3 Peter Zijlstra 2016-03-09 51 * A weaker form of clear_bit_unlock() as used by __bit_lock_unlock(). If all
f75d48644c56a3 Peter Zijlstra 2016-03-09 52 * the bits in the word are protected by this lock some archs can use weaker
f75d48644c56a3 Peter Zijlstra 2016-03-09 53 * ops to safely unlock.
f75d48644c56a3 Peter Zijlstra 2016-03-09 54 *
f75d48644c56a3 Peter Zijlstra 2016-03-09 55 * See for example x86's implementation.
26333576fd0d0b Nick Piggin 2007-10-18 56 */
84c6591103dbea Will Deacon 2018-06-19 57 static inline void __clear_bit_unlock(unsigned int nr,
84c6591103dbea Will Deacon 2018-06-19 58 volatile unsigned long *p)
84c6591103dbea Will Deacon 2018-06-19 59 {
84c6591103dbea Will Deacon 2018-06-19 60 unsigned long old;
26333576fd0d0b Nick Piggin 2007-10-18 61
84c6591103dbea Will Deacon 2018-06-19 62 p += BIT_WORD(nr);
84c6591103dbea Will Deacon 2018-06-19 @63 old = READ_ONCE(*p);
84c6591103dbea Will Deacon 2018-06-19 64 old &= ~BIT_MASK(nr);
84c6591103dbea Will Deacon 2018-06-19 65 atomic_long_set_release((atomic_long_t *)p, old);
84c6591103dbea Will Deacon 2018-06-19 66 }
84c6591103dbea Will Deacon 2018-06-19 67
:::::: The code at line 63 was first introduced by commit
:::::: 84c6591103dbeaf393a092a3fc7b09510825f6b9 locking/atomics, asm-generic/bitops/lock.h: Rewrite using atomic_fetch_*()
:::::: TO: Will Deacon <will.deacon@arm.com>
:::::: CC: Ingo Molnar <mingo@kernel.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2023-12-03 10:39 UTC|newest]
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