Hi James, kernel test robot noticed the following build warnings:
[auto build test WARNING on bpf-next/master] [also build test WARNING on bpf/master linus/master v6.16 next-20250731] [cannot apply to bpf-next/net] [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/James-Bottomley/bpf-make-bpf_key-an-opaque-type/20250731-013040 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20250730172745.8480-4-James.Bottomley%40HansenPartnership.com patch subject: [PATCH v2 3/3] bpf: eliminate the allocation of an intermediate struct bpf_key config: i386-randconfig-r133-20250801 (https://download.01.org/0day-ci/archive/20250801/202508010906.eulq24in-...@intel.com/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250801/202508010906.eulq24in-...@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 <l...@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202508010906.eulq24in-...@intel.com/ sparse warnings: (new ones prefixed by >>) kernel/trace/bpf_trace.c:834:41: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __user *[addressable] [assigned] [usertype] sival_ptr @@ got void * @@ kernel/trace/bpf_trace.c:834:41: sparse: expected void [noderef] __user *[addressable] [assigned] [usertype] sival_ptr kernel/trace/bpf_trace.c:834:41: sparse: got void * >> kernel/trace/bpf_trace.c:1249:11: sparse: sparse: symbol 'BUILTIN_KEY' was >> not declared. Should it be static? kernel/trace/bpf_trace.c:3684:52: sparse: sparse: cast removes address space '__user' of expression kernel/trace/bpf_trace.c:3698:56: sparse: sparse: cast removes address space '__user' of expression kernel/trace/bpf_trace.c:3712:52: sparse: sparse: cast removes address space '__user' of expression kernel/trace/bpf_trace.c:3719:56: sparse: sparse: cast removes address space '__user' of expression kernel/trace/bpf_trace.c:3727:52: sparse: sparse: cast removes address space '__user' of expression kernel/trace/bpf_trace.c:3735:56: sparse: sparse: cast removes address space '__user' of expression kernel/trace/bpf_trace.c: note: in included file (through include/linux/rbtree.h, include/linux/mm_types.h, include/linux/mmzone.h, ...): include/linux/rcupdate.h:871:25: sparse: sparse: context imbalance in 'uprobe_prog_run' - unexpected unlock vim +/BUILTIN_KEY +1249 kernel/trace/bpf_trace.c 1243 1244 #ifdef CONFIG_KEYS 1245 /* BTF requires this even if it serves no purpose */ 1246 struct bpf_key { 1247 }; 1248 /* conventional value to replace zero return which would become NULL */ > 1249 const u64 BUILTIN_KEY = -1LL; 1250 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
