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-rw-r--r--kernel/bpf/verifier.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index d690c7dd1f1a..477b6932c3c1 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -4203,6 +4203,22 @@ static int fixup_bpf_calls(struct bpf_verifier_env *env)
continue;
}
+ if (insn->imm == BPF_FUNC_redirect_map) {
+ u64 addr = (unsigned long)prog;
+ struct bpf_insn r4_ld[] = {
+ BPF_LD_IMM64(BPF_REG_4, addr),
+ *insn,
+ };
+ cnt = ARRAY_SIZE(r4_ld);
+
+ new_prog = bpf_patch_insn_data(env, i + delta, r4_ld, cnt);
+ if (!new_prog)
+ return -ENOMEM;
+
+ delta += cnt - 1;
+ env->prog = prog = new_prog;
+ insn = new_prog->insnsi + i + delta;
+ }
patch_call_imm:
fn = prog->aux->ops->get_func_proto(insn->imm);
/* all functions that have prototype and verifier allowed