From patchwork Wed May 26 15:25:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Abeni X-Patchwork-Id: 12282133 X-Patchwork-Delegate: mat@martineau.name Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D17E370 for ; Wed, 26 May 2021 15:26:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1622042763; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=AcWkiKSZ8yHV3kxJO5ZZkW5/1vqbxHCCKA4qfuymk1M=; b=I8ua/tlYcMZ8TAiP3fvgIaOdFJhF/cetJ7/iGVtpStCxzzTTpUAqFaV4p0up5CPxqsPLG1 8Lf1vRIeO5kMN8kg2IX5TFYTJ0MgWO85M/tjWkvJ3zE7DZEaVhgN80Iu8CW4L+R7P7NtCY l3r18XcfEr9XSLU3rfWwvueOLp48Bn8= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-536-MRC9On8XMP-7D4wL-LY6yA-1; Wed, 26 May 2021 11:26:01 -0400 X-MC-Unique: MRC9On8XMP-7D4wL-LY6yA-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 79D6BC73A1; Wed, 26 May 2021 15:26:00 +0000 (UTC) Received: from gerbillo.redhat.com (ovpn-113-44.ams2.redhat.com [10.36.113.44]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7FF1060875; Wed, 26 May 2021 15:25:59 +0000 (UTC) From: Paolo Abeni To: mptcp@lists.linux.dev Cc: max@internet.ru Subject: [PATCH mptcp-net] mptcp: let warn_bad_map report relevant values Date: Wed, 26 May 2021 17:25:50 +0200 Message-Id: X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=pabeni@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com When the right bound check fails, warn_bad_map() reports the wrong ssn value, let's fix it. Fixes: 648ef4b88673 ("mptcp: Implement MPTCP receive path") Signed-off-by: Paolo Abeni Reviewed-by: Mat Martineau --- net/mptcp/subflow.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c index 6b1cd4257edf..726bc3d083fa 100644 --- a/net/mptcp/subflow.c +++ b/net/mptcp/subflow.c @@ -821,7 +821,7 @@ static bool validate_mapping(struct sock *ssk, struct sk_buff *skb) if (unlikely(!before(ssn, subflow->map_subflow_seq + subflow->map_data_len))) { /* Mapping does covers past subflow data, invalid */ - warn_bad_map(subflow, ssn + skb->len); + warn_bad_map(subflow, ssn); return false; } return true;