274 	u32 spi, i, fr;  in backtrack_insn()  local
378 		fr = hist->frame;  in backtrack_insn()
379 		bpf_bt_set_frame_slot(bt, fr, spi);  in backtrack_insn()
402 		fr = hist->frame;  in backtrack_insn()
403 		if (!bt_is_frame_slot_set(bt, fr, spi))  in backtrack_insn()
405 		bt_clear_frame_slot(bt, fr, spi);  in backtrack_insn()
812 	int i, fr, err;  in bpf_mark_chain_precision()  local
916 		for (fr = bt->frame; fr >= 0; fr--) {  in bpf_mark_chain_precision()
917 			func = st->frame[fr];  in bpf_mark_chain_precision()
918 			bitmap_from_u64(mask, bt_frame_reg_mask(bt, fr));  in bpf_mark_chain_precision()
922 					bt_clear_frame_reg(bt, fr, i);  in bpf_mark_chain_precision()
926 					bt_clear_frame_reg(bt, fr, i);  in bpf_mark_chain_precision()
933 			bitmap_from_u64(mask, bt_frame_stack_mask(bt, fr));  in bpf_mark_chain_precision()
941 					bt_clear_frame_slot(bt, fr, i);  in bpf_mark_chain_precision()
946 					bt_clear_frame_slot(bt, fr, i);  in bpf_mark_chain_precision()
953 				if (!bt_is_frame_stack_arg_slot_set(bt, fr, i))  in bpf_mark_chain_precision()
957 					bt_clear_frame_stack_arg_slot(bt, fr, i);  in bpf_mark_chain_precision()
965 					     bt_frame_reg_mask(bt, fr));  in bpf_mark_chain_precision()
967 					fr, env->tmp_str_buf);  in bpf_mark_chain_precision()
969 					       bt_frame_stack_mask(bt, fr));  in bpf_mark_chain_precision()
971 				print_verifier_state(env, st, fr, true);  in bpf_mark_chain_precision()