Date: Sun, 28 Sep 2014 15:54:36 -0400 (EDT) From: Benjamin Kaduk <kaduk@MIT.EDU> To: =?ISO-8859-15?Q?Jos=E9_P=E9rez_Arauzo?= <fbl@aoek.com> Cc: FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: What do you use for kernel debugging? Message-ID: <alpine.GSO.1.10.1409281553060.21571@multics.mit.edu> In-Reply-To: <20140928071641.M7664@beckpeccoz.com> References: <20140928071641.M7664@beckpeccoz.com>
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On Sun, 28 Sep 2014, Jos=C3=A9 P=C3=A9rez Arauzo wrote: > Hello, > I am trying to track down a (deadlock?) issue in CURRENT via DDB. The ker= nel does > not complete hw probes on my Acer V5. > > I get stuck on apic_isr looping which leads nowhere. > > So I thought maybe things improve if I debug from another machine. > > > What do you use for kernel debugging? According to the handbook kgdb over= serial > is a good option, do you agree? I'm on a netbook with no ethernet and no = option > for firewire: can I have a USB / nullmodem setup to work? You cannot. > I have no old-style uarts hardware anymore, as the handbook suggests... > > Any idea is welcome before I buy extra hw. I have a USB to serial showing= up as > /dev/cuaU0, do I need to grab another one and a nullmodem cable or there = are better > alternatives? Thank you. I'm not sure that there are alternatives at all, unfortunately. You may be reduced to debugging-via-printf. -Ben Kaduk From owner-freebsd-current@FreeBSD.ORG Sun Sep 28 20:09:44 2014 Return-Path: <owner-freebsd-current@FreeBSD.ORG> Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 38FC36C7 for <freebsd-current@freebsd.org>; Sun, 28 Sep 2014 20:09:44 +0000 (UTC) Received: from mail-ie0-f170.google.com (mail-ie0-f170.google.com [209.85.223.170]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 0583BF3C for <freebsd-current@freebsd.org>; Sun, 28 Sep 2014 20:09:43 +0000 (UTC) Received: by mail-ie0-f170.google.com with SMTP id x19so15905311ier.15 for <freebsd-current@freebsd.org>; Sun, 28 Sep 2014 13:09:37 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type; bh=at6ykSeHFNut1usn809NslpM3b0R2tFy/XOYvwF0v3g=; b=lho9zhGzlINPCM0G4qgmo5M6kD5/eLZUR9e4kdK4K16o6kmBlMv/YVe+8MytVaP2ce WT0++jORm0OxSieuW9pvJwIx6aSFDVGHrYwW8BXkcijq24ORv8gHaAHfugiQ57+rvmq4 Epwv6+PYOl+uPTitNVCgW+x3hHyb+YFJWSd7Gc9us12LvOZMz+ODwKsAVCdAb6lQmPG7 rM0VidxRFfrrnhTYR5BQwvmvHljLfommvE7svVUatts2mS7j+daaVK45NnlcxWlOHt0H cN+akQNF48RSgk8Ig1YekQJLeKDf7DAIour355QbVCZtKVVPiyhgyPhPHQ6w1WgxFP73 iy1A== X-Gm-Message-State: ALoCoQnjmCrkEVh2ZyhlPx8Z1TnZLEVk5Y23MLNcNHtecPjQbG6wVcotZM8N7txVkhD5qXZ4LJVb MIME-Version: 1.0 X-Received: by 10.50.109.228 with SMTP id hv4mr30258744igb.13.1411934976907; Sun, 28 Sep 2014 13:09:36 -0700 (PDT) Received: by 10.64.13.33 with HTTP; Sun, 28 Sep 2014 13:09:36 -0700 (PDT) In-Reply-To: <CAB3ij4AduJ3jtq7aULh9Fvvh0wzpfzZjbFdJiB6mDAcN5vMxpw@mail.gmail.com> References: <CAB3ij4ATBvKHkDjJxgsX0t=XFzKW5ycVz1ChGJqDnrQwx+Z-UA@mail.gmail.com> <CACdU+f8HM+cjrEOoXT83ASmrC3WfeWS3heLJfsYcErvJ+w2ciw@mail.gmail.com> <CAB3ij4AduJ3jtq7aULh9Fvvh0wzpfzZjbFdJiB6mDAcN5vMxpw@mail.gmail.com> Date: Sun, 28 Sep 2014 14:09:36 -0600 Message-ID: <CAB3ij4D+N3C0b-nJofEZ5UtRAwH2TFVsL0R6q1=ZKgK_QKoPDA@mail.gmail.com> Subject: Re: SOEKRIS kernel config From: Tom Everett <tom@khubla.com> To: Scot Hetzel <swhetzel@gmail.com> Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.18-1 Cc: FreeBSD Current <freebsd-current@freebsd.org> X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Discussions about the use of FreeBSD-current <freebsd-current.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-current>, <mailto:freebsd-current-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current/>; List-Post: <mailto:freebsd-current@freebsd.org> List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, <mailto:freebsd-current-request@freebsd.org?subject=subscribe> X-List-Received-Date: Sun, 28 Sep 2014 20:09:44 -0000 Bugzilla ID is *194003 <https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=194003>* On Sun, Sep 28, 2014 at 8:59 AM, Tom Everett <tom@khubla.com> wrote: > That's a great idea. I'll give it a try and get back to the list. > > > On Sun, Sep 28, 2014 at 12:33 AM, Scot Hetzel <swhetzel@gmail.com> wrote: > >> On Sat, Sep 27, 2014 at 9:47 PM, Tom Everett <tom@khubla.com> wrote: >> > I see there is no SOEKRIS config on the tree, here >> > >> > https://svnweb.freebsd.org/base/head/sys/i386/conf/ >> > >> > I have attached one for addition to the tree. >> > >> > >> >> Since you only appended a few configuration options to the end of the >> GENERIC configuration, it would be better to use the include directive >> in the SOEKRIS config file. This allows changes to be made to the >> GENERIC configuration, and the SOEKRIS kernel would automatically get >> those changes. Here's a shorter version of that configuration file: >> >> >> # >> # SOEKRIS -- Generic Kernel configuration file for FreeBSD/i386 on SOEKRIS >> # >> # $FREEBSD >> >> include GENERIC >> >> ident SOEKRIS >> >> # To Make a SOEKRIS Kernel, the next options are needed >> options CPU_SOEKRIS >> options CPU_ELAN >> #options CPU_ELAN_PPS >> #options CPU_ELAN_XTAL=32768000 >> options CPU_GEODE >> >> # Include TMPFS >> options TMPFS >> >> >> -- >> DISCLAIMER: >> >> No electrons were maimed while sending this message. Only slightly >> bruised. >> > > > > -- > A better world shall emerge based on faith and understanding - Douglas > MacArthur > -- A better world shall emerge based on faith and understanding - Douglas MacArthur
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