rcu_access_pointer(sk->sk_filter) is basically the same as sk->sk_filter.
If sk->sk_filter is true, the change makes no difference. If sk->sk_filter is false, the change also drops a UDP packet with incorrect UDP checksum by "goto csum_error;". Without the change, the packet is dropped in udp_recvmsg(); with the change, the packet is dropped earlier. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1888715 Title: UDP data corruption caused by buggy udp_recvmsg() -> skb_copy_and_csum_datagram_msg() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1888715/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
