Re: [PATCH bpf-next v2 22/26] bpf: Introduce rqspinlock kfuncs

kernel test robot
2025-02-07T13:44:15Z

Hi Kumar,

kernel test robot noticed the following build errors:

[auto build test ERROR on 0abff462d802a352c87b7f5e71b442b09bf9cfff]

url: https://github.com/intel-lab-lkp/linux/commits/Kumar-Kartikeya-Dwivedi/locking-Move-MCS-struct-definition-to-public-header/20250206-190258
base: 0abff462d802a352c87b7f5e71b442b09bf9cfff
patch link: https://lore.kernel.org/r/20250206105435.2159977-23-memxor%40gmail.com
patch subject: [PATCH bpf-next v2 22/26] bpf: Introduce rqspinlock kfuncs
config: x86_64-buildonly-randconfig-004-20250207 (https://download.01.org/0day-ci/archive/20250207/202502072155.DbOeX8Le-lkp@intel.com/config)
compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250207/202502072155.DbOeX8Le-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/202502072155.DbOeX8Le-lkp@intel.com/

All errors (new ones prefixed by >>):

In file included from fs/timerfd.c:26:
In file included from include/linux/syscalls.h:94:
In file included from include/trace/syscall.h:7:
In file included from include/linux/trace_events.h:10:
In file included from include/linux/perf_event.h:62:
In file included from include/linux/security.h:35:
In file included from include/linux/bpf.h:33:
In file included from arch/x86/include/asm/rqspinlock.h:27:
>> include/asm-generic/rqspinlock.h:40:12: error: conflicting types for 'resilient_tas_spin_lock'
40 | extern int resilient_tas_spin_lock(rqspinlock_t *lock, u64 timeout);
| ^
arch/x86/include/asm/rqspinlock.h:17:12: note: previous declaration is here
17 | extern int resilient_tas_spin_lock(struct qspinlock *lock, u64 timeout);
| ^
1 error generated.
--
In file included from fs/splice.c:27:
include/linux/mm_inline.h:47:41: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
47 | __mod_lruvec_state(lruvec, NR_LRU_BASE + lru, nr_pages);
| ~~~~~~~~~~~ ^ ~~~
include/linux/mm_inline.h:49:22: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
49 | NR_ZONE_LRU_BASE + lru, nr_pages);
| ~~~~~~~~~~~~~~~~ ^ ~~~
In file included from fs/splice.c:31:
In file included from include/linux/syscalls.h:94:
In file included from include/trace/syscall.h:7:
In file included from include/linux/trace_events.h:10:
In file included from include/linux/perf_event.h:62:
In file included from include/linux/security.h:35:
In file included from include/linux/bpf.h:33:
In file included from arch/x86/include/asm/rqspinlock.h:27:
>> include/asm-generic/rqspinlock.h:40:12: error: conflicting types for 'resilient_tas_spin_lock'
40 | extern int resilient_tas_spin_lock(rqspinlock_t *lock, u64 timeout);
| ^
arch/x86/include/asm/rqspinlock.h:17:12: note: previous declaration is here
17 | extern int resilient_tas_spin_lock(struct qspinlock *lock, u64 timeout);
| ^
2 warnings and 1 error generated.
--
In file included from fs/aio.c:20:
In file included from include/linux/syscalls.h:94:
In file included from include/trace/syscall.h:7:
In file included from include/linux/trace_events.h:10:
In file included from include/linux/perf_event.h:62:
In file included from include/linux/security.h:35:
In file included from include/linux/bpf.h:33:
In file included from arch/x86/include/asm/rqspinlock.h:27:
>> include/asm-generic/rqspinlock.h:40:12: error: conflicting types for 'resilient_tas_spin_lock'
40 | extern int resilient_tas_spin_lock(rqspinlock_t *lock, u64 timeout);
| ^
arch/x86/include/asm/rqspinlock.h:17:12: note: previous declaration is here
17 | extern int resilient_tas_spin_lock(struct qspinlock *lock, u64 timeout);
| ^
In file included from fs/aio.c:29:
include/linux/mman.h:159:9: warning: division by zero is undefined [-Wdivision-by-zero]
159 | _calc_vm_trans(flags, MAP_SYNC, VM_SYNC ) |
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/mman.h:137:21: note: expanded from macro '_calc_vm_trans'
137 | : ((x) & (bit1)) / ((bit1) / (bit2))))
| ^ ~~~~~~~~~~~~~~~~~
include/linux/mman.h:160:9: warning: division by zero is undefined [-Wdivision-by-zero]
160 | _calc_vm_trans(flags, MAP_STACK, VM_NOHUGEPAGE) |
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/mman.h:137:21: note: expanded from macro '_calc_vm_trans'
137 | : ((x) & (bit1)) / ((bit1) / (bit2))))
| ^ ~~~~~~~~~~~~~~~~~
2 warnings and 1 error generated.

vim +/resilient_tas_spin_lock +40 include/asm-generic/rqspinlock.h

c34e46edef2a89 Kumar Kartikeya Dwivedi 2025-02-06 39
7a9d3b27f7bf9c Kumar Kartikeya Dwivedi 2025-02-06 @40 extern int resilient_tas_spin_lock(rqspinlock_t *lock, u64 timeout);
7a9d3b27f7bf9c Kumar Kartikeya Dwivedi 2025-02-06 41 #ifdef CONFIG_QUEUED_SPINLOCKS
6516ce00a1482f Kumar Kartikeya Dwivedi 2025-02-06 42 extern int resilient_queued_spin_lock_slowpath(rqspinlock_t *lock, u32 val, u64 timeout);
7a9d3b27f7bf9c Kumar Kartikeya Dwivedi 2025-02-06 43 #endif
6516ce00a1482f Kumar Kartikeya Dwivedi 2025-02-06 44

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