From patchwork Tue May 10 19:29:50 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antonio Quartulli X-Patchwork-Id: 16151 Return-Path: X-Original-To: patchwork@open-mesh.org Delivered-To: patchwork@open-mesh.org Received: from open-mesh.org (localhost [IPv6:::1]) by open-mesh.org (Postfix) with ESMTP id 131A682B7E; Tue, 10 May 2016 21:31:20 +0200 (CEST) Authentication-Results: open-mesh.org; dmarc=none header.from=unstable.cc Received-SPF: Permerror (SPF Permanent Error: Two or more type TXT spf records found.) identity=mailfrom; client-ip=5.148.176.60; helo=s2.neomailbox.net; envelope-from=a@unstable.cc; receiver=b.a.t.m.a.n@lists.open-mesh.org Authentication-Results: open-mesh.org; dmarc=none header.from=unstable.cc Received: from s2.neomailbox.net (s2.neomailbox.net [5.148.176.60]) by open-mesh.org (Postfix) with ESMTPS id 30CFA82B5D for ; Tue, 10 May 2016 21:31:00 +0200 (CEST) From: Antonio Quartulli To: davem@davemloft.net Date: Wed, 11 May 2016 03:29:50 +0800 Message-Id: <1462908605-27412-3-git-send-email-a@unstable.cc> In-Reply-To: <1462908605-27412-1-git-send-email-a@unstable.cc> References: <1462908605-27412-1-git-send-email-a@unstable.cc> Cc: netdev@vger.kernel.org, b.a.t.m.a.n@lists.open-mesh.org, Antonio Quartulli , Marek Lindner Subject: [B.A.T.M.A.N.] [PATCH 02/17] batman-adv: Remove hdr_size skb size check in batadv_interface_rx X-BeenThere: b.a.t.m.a.n@lists.open-mesh.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: The list for a Better Approach To Mobile Ad-hoc Networking List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: The list for a Better Approach To Mobile Ad-hoc Networking Errors-To: b.a.t.m.a.n-bounces@lists.open-mesh.org Sender: "B.A.T.M.A.N" From: Sven Eckelmann The callers of batadv_interface_rx have to make sure that enough data can be pulled from the skb when they read the batman-adv header. The only two functions using it are either calling pskb_may_pull with hdr_size directly (batadv_recv_bcast_packet) or indirectly via batadv_check_unicast_packet (batadv_recv_unicast_packet). Reported-by: Marek Lindner Signed-off-by: Sven Eckelmann Signed-off-by: Marek Lindner Signed-off-by: Antonio Quartulli --- net/batman-adv/soft-interface.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index dc9a61a5122d..d72f88707736 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -413,10 +413,6 @@ void batadv_interface_rx(struct net_device *soft_iface, batadv_bcast_packet = (struct batadv_bcast_packet *)skb->data; is_bcast = (batadv_bcast_packet->packet_type == BATADV_BCAST); - /* check if enough space is available for pulling, and pull */ - if (!pskb_may_pull(skb, hdr_size)) - goto dropped; - skb_pull_rcsum(skb, hdr_size); skb_reset_mac_header(skb);