On Mon, Apr 26, 2021 at 11:53:50AM +0200, Jesper Dangaard Brouer wrote: > Decode: perf_trace_xdp_redirect_template+0xba > ./scripts/faddr2line vmlinux perf_trace_xdp_redirect_template+0xba > perf_trace_xdp_redirect_template+0xba/0x130: > perf_trace_xdp_redirect_template at include/trace/events/xdp.h:89 (discriminator 13) > > less -N net/core/filter.c > [...] > 3993 if (unlikely(err)) > 3994 goto err; > 3995 > -> 3996 _trace_xdp_redirect_map(dev, xdp_prog, fwd, map_type, map_id, ri->tgt_index); Oh, the fwd in xdp xdp_redirect_map broadcast is NULL... I will see how to fix it. Maybe assign the ingress interface to fwd? Hangbin > 3997 return 0; > 3998 err: > 3999 _trace_xdp_redirect_map_err(dev, xdp_prog, fwd, map_type, map_id, ri->tgt_index, err); > 4000 return err; > 4001 } > 4002 EXPORT_SYMBOL_GPL(xdp_do_redirect);