__mark_reg_known_zero
static void __mark_reg_known_zero(struct bpf_reg_state *reg);
__mark_reg_known_zero(st);
__mark_reg_known_zero(&callee->regs[BPF_REG_2]);
__mark_reg_known_zero(&callee->regs[BPF_REG_3]);
__mark_reg_known_zero(&callee->regs[BPF_REG_1]);
__mark_reg_known_zero(&callee->regs[BPF_REG_2]);
__mark_reg_known_zero(&callee->regs[BPF_REG_3]);
__mark_reg_known_zero(&callee->regs[BPF_REG_2]);
__mark_reg_known_zero(&callee->regs[BPF_REG_1]);
__mark_reg_known_zero(&callee->regs[BPF_REG_2]);
__mark_reg_known_zero(&callee->regs[BPF_REG_3]);
__mark_reg_known_zero(st);
__mark_reg_known_zero(regs + regno);
__mark_reg_known_zero(reg);
__mark_reg_known_zero(®s[regno]);