From owner-freebsd-scsi@FreeBSD.ORG Mon Nov 8 15:29:52 2010 Return-Path: Delivered-To: freebsd-scsi@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1907E106564A; Mon, 8 Nov 2010 15:29:52 +0000 (UTC) (envelope-from mavbsd@gmail.com) Received: from mail-gw0-f54.google.com (mail-gw0-f54.google.com [74.125.83.54]) by mx1.freebsd.org (Postfix) with ESMTP id AE9628FC0C; Mon, 8 Nov 2010 15:29:50 +0000 (UTC) Received: by gwj16 with SMTP id 16so3581158gwj.13 for ; Mon, 08 Nov 2010 07:29:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:sender:message-id:date:from :user-agent:mime-version:to:subject:references:in-reply-to :x-enigmail-version:content-type:content-transfer-encoding; bh=hK5AjbK/34d6o7wWT8R1kXxlCJK8H6zqeWYCjxqm2sA=; b=vM8A0TrWV3jFGd0rXZ+8lkaFXNsRSUACZi7BQMtOdJANuFwFnHhFr4nK61K2pailtp iQ5tt37drxuKCABYuYg/DXKggru/aFAPpcyvhhGuwhsJVvj4YU2KCnxUDKM87s1OeSoN 8Jag6Rx02K8BP7PSk/y3xJ0yJttOp6m7Y2tSs= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:message-id:date:from:user-agent:mime-version:to:subject :references:in-reply-to:x-enigmail-version:content-type :content-transfer-encoding; b=xyJTPsvxbvhiCQ1+2v0QgSJQbyYohHsGMQAVCODDOJxPqJ8UIlZLBuhjZtEkjVMCJn DrSducQFlPwbZe/NIT5W1iB4E1A5RNbtP74J8aOIlxyP8MK+9OKTIP4aBfG+TuQgblhs jf5q9IOnHuRwiKYb465RMNyuWIBwQfkHkb2ME= Received: by 10.204.51.142 with SMTP id d14mr5090827bkg.48.1289230189712; Mon, 08 Nov 2010 07:29:49 -0800 (PST) Received: from mavbook2.mavhome.dp.ua (pc.mavhome.dp.ua [212.86.226.226]) by mx.google.com with ESMTPS id r21sm2791bkj.22.2010.11.08.07.29.46 (version=SSLv3 cipher=RC4-MD5); Mon, 08 Nov 2010 07:29:47 -0800 (PST) Sender: Alexander Motin Message-ID: <4CD81759.3040109@FreeBSD.org> Date: Mon, 08 Nov 2010 17:29:29 +0200 From: Alexander Motin User-Agent: Thunderbird 2.0.0.23 (X11/20091212) MIME-Version: 1.0 To: Alexander Best , freebsd-scsi@freebsd.org References: <4CD455A3.2010803@FreeBSD.org> In-Reply-To: <4CD455A3.2010803@FreeBSD.org> X-Enigmail-Version: 0.96.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Subject: Re: panic with high kern.cam.boot_delay value X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Nov 2010 15:29:52 -0000 Alexander Motin wrote: > Alexander Best wrote: >> i just stumbled upon a panic in connection with a very high kern.cam.boot_delay >> value (=100000). this is on HEAD (r214809; amd64). unfortunately i couldn't >> enter the debugger, because the panic occured before my usb keyboard attached. >> >> the panic however occured in sched_priority(). can anybody reproduce this? just >> before the panic i saw some xpt_* message in connection with a 60 second delay. > > I have feeling that it is related not to CAM, but to new event timers > infrastructure and SCHED_ULE. I have one report about panic in > sched_priority() on virtual machine. Unluckily, I can't reproduce any of > cases. r214987 should fix the problem. -- Alexander Motin