@@ -604,15 +604,6 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx)
const struct bpf_insn insn1 = insn[1];
u64 imm64;
- if (insn1.code != 0 || insn1.src_reg != 0 ||
- insn1.dst_reg != 0 || insn1.off != 0) {
- /* Note: verifier in BPF core must catch invalid
- * instructions.
- */
- pr_err_once("Invalid BPF_LD_IMM64 instruction\n");
- return -EINVAL;
- }
-
imm64 = (u64)insn1.imm << 32 | (u32)imm;
emit_a64_mov_i64(dst, imm64, ctx);
@@ -490,13 +490,6 @@ static int do_jit(struct bpf_prog *bpf_prog, int *addrs, u8 *image,
break;
case BPF_LD | BPF_IMM | BPF_DW:
- if (insn[1].code != 0 || insn[1].src_reg != 0 ||
- insn[1].dst_reg != 0 || insn[1].off != 0) {
- /* verifier must catch invalid insns */
- pr_err("invalid BPF_LD_IMM64 insn\n");
- return -EINVAL;
- }
-
/* optimization: if imm64 is zero, use 'xor <dst>,<dst>'
* to save 7 bytes.
*/