From owner-freebsd-current@freebsd.org Thu Aug 8 14:17:03 2019 Return-Path: Delivered-To: freebsd-current@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 5F682CFD49 for ; Thu, 8 Aug 2019 14:17:03 +0000 (UTC) (envelope-from slava.shwartsman@gmail.com) Received: from mailman.nyi.freebsd.org (mailman.nyi.freebsd.org [IPv6:2610:1c1:1:606c::50:13]) by mx1.freebsd.org (Postfix) with ESMTP id 4649Rg0nPDz4Nfr for ; Thu, 8 Aug 2019 14:17:03 +0000 (UTC) (envelope-from slava.shwartsman@gmail.com) Received: by mailman.nyi.freebsd.org (Postfix) id 18E76CFD45; Thu, 8 Aug 2019 14:17:03 +0000 (UTC) Delivered-To: current@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 18AA2CFD44 for ; Thu, 8 Aug 2019 14:17:03 +0000 (UTC) (envelope-from slava.shwartsman@gmail.com) Received: from mail-wr1-f68.google.com (mail-wr1-f68.google.com [209.85.221.68]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4649Rf1VZHz4Nfq; Thu, 8 Aug 2019 14:17:01 +0000 (UTC) (envelope-from slava.shwartsman@gmail.com) Received: by mail-wr1-f68.google.com with SMTP id b3so2720121wro.4; Thu, 08 Aug 2019 07:17:01 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:reply-to:subject:to:cc:references:from :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=su2cYPWWEL55BuzOJ2mqcq1u2vRLqb1zISzT+jYinD8=; b=S8IgYmWY1BCkQHsRW/UUaQ5DwXib5qj2+Mcn13h1xchA4CsgNrQX5GCjqF0IihTVVb ltZeyUeXzSGcVYMoXzPkmDLNWjAdQv4MJ9PN2yzNm6MJSZhTsoDMR6Vp7QSub3pebihr SuWd3KQadmm/jyl3U8WmHUJjm7v6F0o0PnLMAWrumDMGQT/1SgxC3VtlzE/1f1sAjmoG p3oGVjRU7ydYQy9EZob07vQr1utCP/fM9qfLxehwRbp2NezjZg//4q0o9m6AyWQ9gFlg 0npirN5yfyCte7HaflZmjGSI+0+t3RXMne6GjE8lbht3PL99dpv0eHC4nHxVFk1bZyEf KQng== X-Gm-Message-State: APjAAAXDJho8woEtbgRh/QP9fMsdxyZYIzQQK1CUv7Rik6SKraL3SMnZ 3BKmkcmzhw5l+aj35pw2KVTaqqvC X-Google-Smtp-Source: APXvYqyJldr1UrzIlKfEoowlboIVlsuFIrqeXnkc6KrzBrghuzMIyOkZCZcUZy60W38gnGUt05Mxvg== X-Received: by 2002:adf:fa42:: with SMTP id y2mr17590738wrr.170.1565273820189; Thu, 08 Aug 2019 07:17:00 -0700 (PDT) Received: from [10.223.3.125] ([193.47.165.251]) by smtp.gmail.com with ESMTPSA id o7sm61021766wru.58.2019.08.08.07.16.59 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 08 Aug 2019 07:16:59 -0700 (PDT) Reply-To: slavash@FreeBSD.org Subject: Re: kernel module code coverage To: Alan Somers , Michael Tuexen Cc: current References: From: Slava Shwartsman Message-ID: Date: Thu, 8 Aug 2019 17:16:58 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4649Rf1VZHz4Nfq X-Spamd-Bar: ------ Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of slavashwartsman@gmail.com designates 209.85.221.68 as permitted sender) smtp.mailfrom=slavashwartsman@gmail.com X-Spamd-Result: default: False [-6.06 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; HAS_REPLYTO(0.00)[slavash@FreeBSD.org]; R_SPF_ALLOW(-0.20)[+ip4:209.85.128.0/17]; REPLYTO_ADDR_EQ_FROM(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; TO_DN_ALL(0.00)[]; NEURAL_HAM_SHORT(-1.00)[-0.998,0]; FORGED_SENDER(0.30)[slavash@FreeBSD.org,slavashwartsman@gmail.com]; MIME_TRACE(0.00)[0:+]; R_DKIM_NA(0.00)[]; FREEMAIL_ENVFROM(0.00)[gmail.com]; FROM_NEQ_ENVFROM(0.00)[slavash@FreeBSD.org,slavashwartsman@gmail.com]; MID_RHS_MATCH_FROM(0.00)[]; ASN(0.00)[asn:15169, ipnet:209.85.128.0/17, country:US]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; TAGGED_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[FreeBSD.org]; IP_SCORE(-3.06)[ip: (-9.45), ipnet: 209.85.128.0/17(-3.39), asn: 15169(-2.43), country: US(-0.05)]; RCVD_IN_DNSWL_NONE(0.00)[68.221.85.209.list.dnswl.org : 127.0.5.0]; RWL_MAILSPIKE_POSSIBLE(0.00)[68.221.85.209.rep.mailspike.net : 127.0.0.17]; RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 08 Aug 2019 14:17:03 -0000 On 08-Aug-19 16:52, Alan Somers wrote: > On Thu, Aug 8, 2019 at 7:42 AM Michael Tuexen wrote: >> >> >> >>> On 8. Aug 2019, at 14:24, Slava Shwartsman wrote: >>> >>> Apparently, Bullseye are dropping support for FreeBSD. >>> >>> We are looking for an alternative for kernel module run time analysis. >>> Mostly interested in code coverage (for now). >>> >>> Any suggestions that work for you? >> Have you looked into /dev/kcov. This is used by SYZKALLER for getting >> coverage information from the kernel. >> Thanks. Is there a man page for /dev/kcov? >> Best regards >> Michael >>> >>> >>> Slava > > That's part of Matt Macy's gcov project, right?. However, while it > works for the kernel itself, it doesn't work for modules. In worst case, I can build my module into the kernel, right? > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=239194 > -Alan > Slava