From: Dmitry Popov <d...@highloadlab.com> Date: Thu, 11 Apr 2013 11:46:00 +0400
> There is a bug in cookie_v4_check (net/ipv4/syncookies.c): > flowi4_init_output(&fl4, 0, sk->sk_mark, RT_CONN_FLAGS(sk), > RT_SCOPE_UNIVERSE, IPPROTO_TCP, > inet_sk_flowi_flags(sk), > (opt && opt->srr) ? opt->faddr : ireq->rmt_addr, > ireq->loc_addr, th->source, th->dest); > > Here we do not respect sk->sk_bound_dev_if, therefore wrong dst_entry may be > taken. This dst_entry is used by new socket (get_cookie_sock -> > tcp_v4_syn_recv_sock), so its packets may take the wrong path. > > Signed-off-by: Dmitry Popov <d...@highloadlab.com> Do not top post, especially with patches! Because you top posted the new version of the patch, my reply to you sits at the end of the new patch. Make a fresh, completely new, mailing list posting to post new versions of patches. Never do so using replies. Thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
