From owner-freebsd-stable@FreeBSD.ORG Sun Jan 12 03:35:28 2014 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 193217FE for ; Sun, 12 Jan 2014 03:35:28 +0000 (UTC) Received: from nm12-vm6.bullet.mail.ne1.yahoo.com (nm12-vm6.bullet.mail.ne1.yahoo.com [98.138.91.105]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 98FB21F12 for ; Sun, 12 Jan 2014 03:35:27 +0000 (UTC) Received: from [98.138.226.180] by nm12.bullet.mail.ne1.yahoo.com with NNFMP; 12 Jan 2014 03:32:09 -0000 Received: from [98.138.104.114] by tm15.bullet.mail.ne1.yahoo.com with NNFMP; 12 Jan 2014 03:32:09 -0000 Received: from [127.0.0.1] by smtp223.mail.ne1.yahoo.com with NNFMP; 12 Jan 2014 03:32:09 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1389497529; bh=GBi/WHJAD0BZImulnrSChzaMWPzcJSguPtP962WUK9o=; h=X-Yahoo-Newman-Id:X-Yahoo-Newman-Property:X-YMail-OSG:X-Yahoo-SMTP:X-Rocket-Received:Subject:From:Reply-To:To:Cc:In-Reply-To:References:Content-Type:Date:Message-ID:Mime-Version:X-Mailer:Content-Transfer-Encoding; b=GIrNd87uGr2QHr8CgVbCzBOvgvhXOfvEMd8mbTxcSERm/5ae5/lHq5H7hGSfbsZjzGWAsznRh+cf33xydQDiHbOD8UImm/IcMY/ptoKW67vntRzCgZl0x46kzm1azoesdsZPQOjFxs2ANz2w2cgfYgsP8bVNuHRwLrAO2DqSjWA= X-Yahoo-Newman-Id: 757783.54656.bm@smtp223.mail.ne1.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: d2aVdu8VM1nJxndKm1ROlXinBJ75ubEDLCu5ihFhFN3VwGx msQZlzCN1fs0IXDRDLhiY8q4NOM.iZlI1FTOVu8bRPWSb3MMegeN_SQbSjyE 3NwnnOCOlIXuFaULlnaL7A.Ed9T.g8XXIU96R10EE8Qj9Mw_ACWiSBmBjJ.O iWzf2qx7u4M4VmQ6cEktXXhVcHjJ6b9cA1JPFmoA1LhVtp8ZosYnfa5meSb2 9Q0ecHo6UhamZnP14efA_ZJQ00WqNz8DyWIvQ9Z_IDKahu7wISlGBy0L3cbO YzzlvDn5ibN55Et2lfYkcym0iZ5wcIki63AlIsgrlVfIuUXwIY4uVV49LGjM blgnIK5TKqwLx1IT6rBxBQ8xmZaqVrKmNeWSQ0ZSf9LRTtJidRr5Q9XsG5_6 lODFgSboHsTRtaosDX0DtYFxeW3WfbqmsOE5N8.By5_nx3dccnDaZvqH1DVC uMlQ6FDV5mFqlyU9oCUDA.ZboKzQyqizFhB7vxCAI68paFmrJE6nvpR2oXdz yGptOulA7RcET7lWirJHfgnZ1KxLprrFOTm4I4Csuag9DU6s4eU_GJH3QpR_ VCvJvxtIIKOPGbo0cCowwP9VDDmKbfl6xD10q4P9Wm0V8F9XE.Mt08DrB58F rxziqJVwBGJgGM2JBh4hUxxzDLuaqiNry9ApwtCgBqB29p5p1gO0nrjQ2bWg yfJZsR4FmtLb20WxV8QeEQUFlwJ7w5E9wOeM- X-Yahoo-SMTP: u5BKR6OswBC_iZJVfGRoMkTIpc8pEA4- X-Rocket-Received: from [192.168.100.138] (sean_bruno@24.23.220.111 with plain [98.138.105.21]) by smtp223.mail.ne1.yahoo.com with SMTP; 12 Jan 2014 03:32:09 +0000 UTC Subject: Re: panic: stable/10 with Debugging enabled in kern_cons.c:500 From: Sean Bruno To: Adam McDougall In-Reply-To: <52D208EF.1010601@egr.msu.edu> References: <1389478327.46758.7.camel@powernoodle.corp.yahoo.com> <1389480297.46758.9.camel@powernoodle.corp.yahoo.com> <52D208EF.1010601@egr.msu.edu> Content-Type: text/plain; charset="us-ascii" Date: Sat, 11 Jan 2014 19:32:04 -0800 Message-ID: <1389497524.1395.1.camel@powernoodle.corp.yahoo.com> Mime-Version: 1.0 X-Mailer: Evolution 2.32.1 FreeBSD GNOME Team Port Content-Transfer-Encoding: 7bit Cc: freebsd-stable@freebsd.org X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list Reply-To: sbruno@freebsd.org List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 12 Jan 2014 03:35:28 -0000 On Sat, 2014-01-11 at 22:15 -0500, Adam McDougall wrote: > On 01/11/2014 17:44, Sean Bruno wrote: > > On Sat, 2014-01-11 at 14:12 -0800, Sean Bruno wrote: > >> I can't imagine that I'm the first person to run with the following > >> debug options enabled: > >> > >> http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug-deadlocks.html > >> > >> But, I can't get stable/10 to post on a plain old supermicro box with > >> those debugging symbols enabled. > >> > >> random: unblocking device. > >> panic: mtx_lock_spin: recursed on non-recursive mutex cnputs_mtx > >> @ /usr/src/sys/kern/kern_cons.c:500 > >> > > > > Witness induced. Removed the witness option and this doesn't happen > > (obviously). Can I get someone familiar with console code to look into > > this? Kind of crappy when I'm investigating a resource starvation > > issue. > > > > sean > > > > Confirmed panic in 10-r258899M (20131203) on XenServer. For reference, > what is your rev? Pretty close to top of tree stable/10 260555 sean