STACK_INVALID     405 kernel/bpf/verifier.c 	[STACK_INVALID]	= '?',
STACK_INVALID     506 kernel/bpf/verifier.c 			if (state->stack[i].slot_type[j] != STACK_INVALID)
STACK_INVALID    6822 kernel/bpf/verifier.c 				st->stack[i].slot_type[j] = STACK_INVALID;
STACK_INVALID    7030 kernel/bpf/verifier.c 		if (old->stack[spi].slot_type[i % BPF_REG_SIZE] == STACK_INVALID)