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-remove-is_return-in-struct-bpf_session_run_ctx/20250922-175833 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20250922095705.252519-1-dongml2%40chinatelecom.cn patch subject: [PATCH bpf-next] bpf: remove is_return in struct bpf_session_run_ctx config: i386-randconfig-r113-20250923 (https://download.01.org/0day-ci/archive/20250923/[email protected]/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250923/[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:3059:62: sparse: sparse: dubious: x | !y kernel/trace/bpf_trace.c:3512:52: sparse: sparse: cast removes address space '__user' of expression kernel/trace/bpf_trace.c:3526:56: sparse: sparse: cast removes address space '__user' of expression kernel/trace/bpf_trace.c:3540:52: sparse: sparse: cast removes address space '__user' of expression kernel/trace/bpf_trace.c:3547:56: sparse: sparse: cast removes address space '__user' of expression kernel/trace/bpf_trace.c:3555:52: sparse: sparse: cast removes address space '__user' of expression kernel/trace/bpf_trace.c:3563:56: 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:869:9: sparse: sparse: context imbalance in 'uprobe_prog_run' - unexpected unlock vim +3059 kernel/trace/bpf_trace.c 3050 3051 static int uprobe_prog_run(struct bpf_uprobe *uprobe, 3052 unsigned long entry_ip, 3053 struct pt_regs *regs, 3054 bool is_return, void *data) 3055 { 3056 struct bpf_uprobe_multi_link *link = uprobe->link; 3057 struct bpf_uprobe_multi_run_ctx run_ctx = { 3058 .session_ctx = { > 3059 .data = (void *)((unsigned long)data | > !!is_return), 3060 }, 3061 .entry_ip = entry_ip, 3062 .uprobe = uprobe, 3063 }; 3064 struct bpf_prog *prog = link->link.prog; 3065 bool sleepable = prog->sleepable; 3066 struct bpf_run_ctx *old_run_ctx; 3067 int err; 3068 3069 if (link->task && !same_thread_group(current, link->task)) 3070 return 0; 3071 3072 if (sleepable) 3073 rcu_read_lock_trace(); 3074 else 3075 rcu_read_lock(); 3076 3077 migrate_disable(); 3078 3079 old_run_ctx = bpf_set_run_ctx(&run_ctx.session_ctx.run_ctx); 3080 err = bpf_prog_run(link->link.prog, regs); 3081 bpf_reset_run_ctx(old_run_ctx); 3082 3083 migrate_enable(); 3084 3085 if (sleepable) 3086 rcu_read_unlock_trace(); 3087 else 3088 rcu_read_unlock(); 3089 return err; 3090 } 3091 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
