On Thu, 2017-01-26 at 09:32 -0600, Roy Keene wrote: > This bug appears to have existed for a long time: > > https://www.spinics.net/lists/netdev/msg222459.html > > http://www.kernelhub.org/?p=2&msg=823752 > > Though possibly with different things not setting the "input" function > pointer in the "struct dst_entry". > > include/net/dst.h: > 496 static inline int dst_input(struct sk_buff *skb) { > 498 return skb_dst(skb)->input(skb); > 499 } > > Is there any reason not to check to see if this pointer is NULL before > blindly calling it ? Sure. It can not be NULL at this point. Just look at the code in ip_rcv_finish() : It first make sure to get a valid dst. Something is broken, probably in bridge netfilter code. I suspect the dst here points to &br->fake_rtable, and this is not expected. br_drop_fake_rtable() should have been called somewhere ... -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
