6904 				   struct bpf_func_state *caller,
6909 			    struct bpf_func_state *caller,
6918 	struct bpf_func_state *caller, *callee;  in __check_func_call()  local
6928 	caller = state->frame[state->curframe];  in __check_func_call()
6938 	err = btf_check_subprog_call(env, subprog, caller->regs);  in __check_func_call()
6951 			clear_caller_saved_regs(env, caller->regs);  in __check_func_call()
6954 			mark_reg_unknown(env, caller->regs, BPF_REG_0);  in __check_func_call()
6955 			caller->regs[BPF_REG_0].subreg_def = DEF_NOT_SUBREG;  in __check_func_call()
6984 		callee->async_entry_cnt = caller->async_entry_cnt + 1;  in __check_func_call()
6987 		err = set_callee_state_cb(env, caller, callee, *insn_idx);  in __check_func_call()
6991 		clear_caller_saved_regs(env, caller->regs);  in __check_func_call()
6992 		mark_reg_unknown(env, caller->regs, BPF_REG_0);  in __check_func_call()
6993 		caller->regs[BPF_REG_0].subreg_def = DEF_NOT_SUBREG;  in __check_func_call()
7014 	err = copy_reference_state(callee, caller);  in __check_func_call()
7018 	err = set_callee_state_cb(env, caller, callee, *insn_idx);  in __check_func_call()
7022 	clear_caller_saved_regs(env, caller->regs);  in __check_func_call()
7032 		print_verifier_state(env, caller, true);  in __check_func_call()
7045 				   struct bpf_func_state *caller,  in map_set_for_each_callback_args()  argument
7053 	callee->regs[BPF_REG_1] = caller->regs[BPF_REG_1];  in map_set_for_each_callback_args()
7057 	callee->regs[BPF_REG_2].map_ptr = caller->regs[BPF_REG_1].map_ptr;  in map_set_for_each_callback_args()
7061 	callee->regs[BPF_REG_3].map_ptr = caller->regs[BPF_REG_1].map_ptr;  in map_set_for_each_callback_args()
7064 	callee->regs[BPF_REG_4] = caller->regs[BPF_REG_3];  in map_set_for_each_callback_args()
7072 			    struct bpf_func_state *caller,  in set_callee_state()  argument
7081 		callee->regs[i] = caller->regs[i];  in set_callee_state()
7102 				       struct bpf_func_state *caller,  in set_map_elem_callback_state()  argument
7122 	err = map->ops->map_set_for_each_callback_args(env, caller, callee);  in set_map_elem_callback_state()
7132 				   struct bpf_func_state *caller,  in set_loop_callback_state()  argument
7141 	callee->regs[BPF_REG_2] = caller->regs[BPF_REG_3];  in set_loop_callback_state()
7154 				    struct bpf_func_state *caller,  in set_timer_callback_state()  argument
7158 	struct bpf_map *map_ptr = caller->regs[BPF_REG_1].map_ptr;  in set_timer_callback_state()
7184 				       struct bpf_func_state *caller,  in set_find_vma_callback_state()  argument
7193 	callee->regs[BPF_REG_1] = caller->regs[BPF_REG_1];  in set_find_vma_callback_state()
7201 	callee->regs[BPF_REG_3] = caller->regs[BPF_REG_4];  in set_find_vma_callback_state()
7212 					   struct bpf_func_state *caller,  in set_user_ringbuf_callback_state()  argument
7223 	callee->regs[BPF_REG_2] = caller->regs[BPF_REG_3];  in set_user_ringbuf_callback_state()
7238 	struct bpf_func_state *caller, *callee;  in prepare_func_exit()  local
7255 	caller = state->frame[state->curframe - 1];  in prepare_func_exit()
7277 		caller->regs[BPF_REG_0] = *r0;  in prepare_func_exit()
7287 		err = copy_reference_state(caller, callee);  in prepare_func_exit()
7297 		print_verifier_state(env, caller, true);  in prepare_func_exit()