fix: try to fix "R3 min value is outside of the allowed memory range"

mozillazg · Jan 25, 2025 · e91bcf0 · e91bcf0
1 parent 71159c6
commit e91bcf0
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Showing 7 changed files with 2 additions and 1 deletion.
diff --git a/bpf/bpf_arm64_bpfel.o b/bpf/bpf_arm64_bpfel.o
diff --git a/bpf/bpf_legacy_arm64_bpfel.o b/bpf/bpf_legacy_arm64_bpfel.o
diff --git a/bpf/bpf_legacy_x86_bpfel.o b/bpf/bpf_legacy_x86_bpfel.o
diff --git a/bpf/bpf_no_tracing_arm64_bpfel.o b/bpf/bpf_no_tracing_arm64_bpfel.o
diff --git a/bpf/bpf_no_tracing_x86_bpfel.o b/bpf/bpf_no_tracing_x86_bpfel.o
diff --git a/bpf/bpf_x86_bpfel.o b/bpf/bpf_x86_bpfel.o
diff --git a/bpf/ptcpdump.c b/bpf/ptcpdump.c
@@ -469,7 +469,8 @@ static __always_inline void handle_tc(bool cgroup_skb, struct __sk_buff *skb, bo
     event->meta.payload_len = payload_len;
 
     if (use_ringbuf) {
-        if (payload_len > 0) {
+        // avoid "R3 min value is outside of the allowed memory range"
+        if (payload_len > 0 && payload_len <= g.max_payload_size && payload_len <= skb->len) {
             struct skb_data_t *skb_data = (struct skb_data_t *)(event + 1);
             bpf_skb_load_bytes(skb, 0, &skb_data->data, payload_len);
         }