From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0B209C3A5A8 for ; Wed, 4 Sep 2019 16:17:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C80F221670 for ; Wed, 4 Sep 2019 16:17:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1567613867; bh=csKgyx9cIvcyBdEkZTLKA3ImSwmlRCwcW6veHW3zcEA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=jShtwKiWlb6P3ptsEQFn0gmmQRU4GLrN5EzSk6wZLXFgEKIdKpmrz/84qg5tr7cBr bGWHVNMZq4ZoT9m+msca8wQgH93yuLCS5g6/YkvS3NAUwPRNQZ9721nbSObAkAB/si HlDFHk6/niAy/o4+zWlwfl67qLx5KIYYMIN+Ery4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732216AbfIDP7A (ORCPT ); Wed, 4 Sep 2019 11:59:00 -0400 Received: from mail.kernel.org ([198.145.29.99]:33214 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732190AbfIDP7A (ORCPT ); Wed, 4 Sep 2019 11:59:00 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3197523784; Wed, 4 Sep 2019 15:58:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1567612739; bh=csKgyx9cIvcyBdEkZTLKA3ImSwmlRCwcW6veHW3zcEA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=y4B6BFWFtijfVWzLcd+0hXzrwGuPk2MErLJtYiAZQUnPX0lwIXmcsW+it98YWuQOV Ka3OJ7Pj12TSGwbrF58nBwfpc2bWZBPOooz7AvUvi8zub3FSAKbRb/gIUn7NN+VQeG 17J1nlRotRBs822reo9bD7U6j5T0oMRsDQCaonRc= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Thomas Jarosch , Pablo Neira Ayuso , Sasha Levin , netfilter-devel@vger.kernel.org, coreteam@netfilter.org, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 5.2 52/94] netfilter: nf_conntrack_ftp: Fix debug output Date: Wed, 4 Sep 2019 11:56:57 -0400 Message-Id: <20190904155739.2816-52-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190904155739.2816-1-sashal@kernel.org> References: <20190904155739.2816-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Thomas Jarosch [ Upstream commit 3a069024d371125227de3ac8fa74223fcf473520 ] The find_pattern() debug output was printing the 'skip' character. This can be a NULL-byte and messes up further pr_debug() output. Output without the fix: kernel: nf_conntrack_ftp: Pattern matches! kernel: nf_conntrack_ftp: Skipped up to `<7>nf_conntrack_ftp: find_pattern `PORT': dlen = 8 kernel: nf_conntrack_ftp: find_pattern `EPRT': dlen = 8 Output with the fix: kernel: nf_conntrack_ftp: Pattern matches! kernel: nf_conntrack_ftp: Skipped up to 0x0 delimiter! kernel: nf_conntrack_ftp: Match succeeded! kernel: nf_conntrack_ftp: conntrack_ftp: match `172,17,0,100,200,207' (20 bytes at 4150681645) kernel: nf_conntrack_ftp: find_pattern `PORT': dlen = 8 Signed-off-by: Thomas Jarosch Signed-off-by: Pablo Neira Ayuso Signed-off-by: Sasha Levin --- net/netfilter/nf_conntrack_ftp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/netfilter/nf_conntrack_ftp.c b/net/netfilter/nf_conntrack_ftp.c index 8c6c11bab5b67..b5df6c4c159cd 100644 --- a/net/netfilter/nf_conntrack_ftp.c +++ b/net/netfilter/nf_conntrack_ftp.c @@ -322,7 +322,7 @@ static int find_pattern(const char *data, size_t dlen, i++; } - pr_debug("Skipped up to `%c'!\n", skip); + pr_debug("Skipped up to 0x%hhx delimiter!\n", skip); *numoff = i; *numlen = getnum(data + i, dlen - i, cmd, term, numoff); -- 2.20.1