BPF_ALU_NEG_VALUE 4326 kernel/bpf/verifier.c alu_state = off_is_neg ? BPF_ALU_NEG_VALUE : 0; BPF_ALU_NEG_VALUE 9040 kernel/bpf/verifier.c isneg = aux->alu_state & BPF_ALU_NEG_VALUE;