Messages in this thread | | | Date | Sat, 25 Nov 2023 17:49:25 +0800 | From | kernel test robot <> | Subject | Re: [PATCH V2] locking/atomic: scripts: Increase template priority in order variants |
| |
Hi,
kernel test robot noticed the following build warnings:
[auto build test WARNING on kees/for-next/pstore] [also build test WARNING on kees/for-next/kspp] [cannot apply to linus/master v6.7-rc2 next-20231124] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/guoren-kernel-org/locking-atomic-scripts-Increase-template-priority-in-order-variants/20231125-093207 base: https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/pstore patch link: https://lore.kernel.org/r/20231125013025.3620560-1-guoren%40kernel.org patch subject: [PATCH V2] locking/atomic: scripts: Increase template priority in order variants config: i386-buildonly-randconfig-002-20231125 (https://download.01.org/0day-ci/archive/20231125/202311251751.UOK2L2UW-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231125/202311251751.UOK2L2UW-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/202311251751.UOK2L2UW-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from arch/x86/include/asm/atomic.h:8, from include/linux/atomic.h:7, from include/linux/jump_label.h:255, from include/linux/static_key.h:1, from arch/x86/include/asm/nospec-branch.h:6, from arch/x86/include/asm/paravirt_types.h:27, from arch/x86/include/asm/ptrace.h:97, from arch/x86/include/asm/math_emu.h:5, from arch/x86/include/asm/processor.h:13, from arch/x86/include/asm/timex.h:5, from include/linux/timex.h:67, from include/linux/time32.h:13, from include/linux/time.h:60, from include/linux/compat.h:10, from kernel/futex/core.c:34: arch/x86/include/asm/cmpxchg.h: In function 'raw_atomic64_cmpxchg_relaxed': >> arch/x86/include/asm/cmpxchg.h:130:9: warning: '__ret' is used uninitialized [-Wuninitialized] 130 | __ret; \ | ^~~~~ arch/x86/include/asm/cmpxchg.h:87:28: note: '__ret' was declared here 87 | __typeof__(*(ptr)) __ret; \ | ^~~~~ arch/x86/include/asm/cmpxchg.h:134:9: note: in expansion of macro '__raw_cmpxchg' 134 | __raw_cmpxchg((ptr), (old), (new), (size), LOCK_PREFIX) | ^~~~~~~~~~~~~ arch/x86/include/asm/cmpxchg.h:149:9: note: in expansion of macro '__cmpxchg' 149 | __cmpxchg(ptr, old, new, sizeof(*(ptr))) | ^~~~~~~~~ include/linux/atomic/atomic-arch-fallback.h:91:29: note: in expansion of macro 'arch_cmpxchg' 91 | #define raw_cmpxchg_relaxed arch_cmpxchg | ^~~~~~~~~~~~ include/linux/atomic/atomic-arch-fallback.h:4107:16: note: in expansion of macro 'raw_cmpxchg_relaxed' 4107 | return raw_cmpxchg_relaxed(&v->counter, old, new); | ^~~~~~~~~~~~~~~~~~~ In function 'raw_atomic64_cmpxchg_relaxed', inlined from 'atomic64_cmpxchg_relaxed' at include/linux/atomic/atomic-instrumented.h:2817:9, inlined from 'get_inode_sequence_number' at kernel/futex/core.c:186:9, inlined from 'get_futex_key' at kernel/futex/core.c:387:23: arch/x86/include/asm/cmpxchg.h:128:17: error: call to '__cmpxchg_wrong_size' declared with attribute error: Bad argument size for cmpxchg 128 | __cmpxchg_wrong_size(); \ | ^~~~~~~~~~~~~~~~~~~~~~ arch/x86/include/asm/cmpxchg.h:134:9: note: in expansion of macro '__raw_cmpxchg' 134 | __raw_cmpxchg((ptr), (old), (new), (size), LOCK_PREFIX) | ^~~~~~~~~~~~~ arch/x86/include/asm/cmpxchg.h:149:9: note: in expansion of macro '__cmpxchg' 149 | __cmpxchg(ptr, old, new, sizeof(*(ptr))) | ^~~~~~~~~ include/linux/atomic/atomic-arch-fallback.h:91:29: note: in expansion of macro 'arch_cmpxchg' 91 | #define raw_cmpxchg_relaxed arch_cmpxchg | ^~~~~~~~~~~~ include/linux/atomic/atomic-arch-fallback.h:4107:16: note: in expansion of macro 'raw_cmpxchg_relaxed' 4107 | return raw_cmpxchg_relaxed(&v->counter, old, new); | ^~~~~~~~~~~~~~~~~~~
vim +/__ret +130 arch/x86/include/asm/cmpxchg.h
e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 79 e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 80 /* e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 81 * Atomic compare and exchange. Compare OLD with MEM, if identical, e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 82 * store NEW in MEM. Return the initial value in MEM. Success is e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 83 * indicated by comparing RETURN with OLD. e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 84 */ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 85 #define __raw_cmpxchg(ptr, old, new, size, lock) \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 86 ({ \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 87 __typeof__(*(ptr)) __ret; \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 88 __typeof__(*(ptr)) __old = (old); \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 89 __typeof__(*(ptr)) __new = (new); \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 90 switch (size) { \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 91 case __X86_CASE_B: \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 92 { \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 93 volatile u8 *__ptr = (volatile u8 *)(ptr); \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 94 asm volatile(lock "cmpxchgb %2,%1" \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 95 : "=a" (__ret), "+m" (*__ptr) \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 96 : "q" (__new), "0" (__old) \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 97 : "memory"); \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 98 break; \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 99 } \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 100 case __X86_CASE_W: \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 101 { \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 102 volatile u16 *__ptr = (volatile u16 *)(ptr); \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 103 asm volatile(lock "cmpxchgw %2,%1" \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 104 : "=a" (__ret), "+m" (*__ptr) \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 105 : "r" (__new), "0" (__old) \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 106 : "memory"); \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 107 break; \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 108 } \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 109 case __X86_CASE_L: \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 110 { \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 111 volatile u32 *__ptr = (volatile u32 *)(ptr); \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 112 asm volatile(lock "cmpxchgl %2,%1" \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 113 : "=a" (__ret), "+m" (*__ptr) \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 114 : "r" (__new), "0" (__old) \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 115 : "memory"); \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 116 break; \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 117 } \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 118 case __X86_CASE_Q: \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 119 { \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 120 volatile u64 *__ptr = (volatile u64 *)(ptr); \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 121 asm volatile(lock "cmpxchgq %2,%1" \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 122 : "=a" (__ret), "+m" (*__ptr) \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 123 : "r" (__new), "0" (__old) \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 124 : "memory"); \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 125 break; \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 126 } \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 127 default: \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 128 __cmpxchg_wrong_size(); \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 129 } \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 @130 __ret; \ e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 131 }) e9826380d83d1b Jeremy Fitzhardinge 2011-08-18 132
-- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
| |