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Commit c49f7dbd authored by Jiong Wang's avatar Jiong Wang Committed by Alexei Starovoitov
Browse files

bpf: verifier remove the rejection on BPF_ALU | BPF_ARSH 



This patch remove the rejection on BPF_ALU | BPF_ARSH as we have supported
them on interpreter and all JIT back-ends

Reviewed-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: default avatarJiong Wang <jiong.wang@netronome.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent 2dc6b100

kernel/bpf/verifier.c

+0 −5
Original line number Diff line number Diff line
@@ -3649,11 +3649,6 @@ static int check_alu_op(struct bpf_verifier_env *env, struct bpf_insn *insn) 
			return -EINVAL;

		}



		if (opcode == BPF_ARSH && BPF_CLASS(insn->code) != BPF_ALU64) {

			verbose(env, "BPF_ARSH not supported for 32 bit ALU\n");

			return -EINVAL;

		}



		if ((opcode == BPF_LSH || opcode == BPF_RSH ||

		     opcode == BPF_ARSH) && BPF_SRC(insn->code) == BPF_K) {

			int size = BPF_CLASS(insn->code) == BPF_ALU64 ? 64 : 32;