Hi Menglong, kernel test robot noticed the following build warnings:
[auto build test WARNING on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Menglong-Dong/bpf-add-tracing-session-support/20251026-110720 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20251026030143.23807-3-dongml2%40chinatelecom.cn patch subject: [PATCH bpf-next v3 2/7] bpf: add two kfunc for TRACE_SESSION config: i386-randconfig-061-20251027 (https://download.01.org/0day-ci/archive/20251027/[email protected]/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/20251027/[email protected]/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 <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ sparse warnings: (new ones prefixed by >>) kernel/trace/bpf_trace.c:833:41: 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:833:41: sparse: expected void [noderef] __user *[addressable] [assigned] [usertype] sival_ptr kernel/trace/bpf_trace.c:833:41: sparse: got void * kernel/trace/bpf_trace.c:3573:52: sparse: sparse: cast removes address space '__user' of expression kernel/trace/bpf_trace.c:3587:56: sparse: sparse: cast removes address space '__user' of expression kernel/trace/bpf_trace.c:3601:52: sparse: sparse: cast removes address space '__user' of expression kernel/trace/bpf_trace.c:3608:56: sparse: sparse: cast removes address space '__user' of expression kernel/trace/bpf_trace.c:3616:52: sparse: sparse: cast removes address space '__user' of expression kernel/trace/bpf_trace.c:3624:56: 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:895:9: sparse: sparse: context imbalance in 'uprobe_prog_run' - unexpected unlock >> kernel/trace/bpf_trace.c:3379:35: sparse: sparse: non size-preserving >> integer to pointer cast vim +3379 kernel/trace/bpf_trace.c 3372 3373 __bpf_kfunc u64 *bpf_fsession_cookie(void *ctx) 3374 { 3375 /* This helper call is inlined by verifier. */ 3376 u64 nr_args = ((u64 *)ctx)[-1]; 3377 3378 /* ctx[nr_args + 2] is the session cookie address */ > 3379 return (u64 *)((u64 *)ctx)[nr_args + 2]; 3380 } 3381 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
