From owner-freebsd-current@FreeBSD.ORG Mon Mar 16 18:52:53 2015 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id C28C2E2 for ; Mon, 16 Mar 2015 18:52:53 +0000 (UTC) Received: from relay.mailchannels.net (tkt-001-i373.relay.mailchannels.net [174.136.5.175]) by mx1.freebsd.org (Postfix) with ESMTP id 7A856154 for ; Mon, 16 Mar 2015 18:52:51 +0000 (UTC) X-Sender-Id: duocircle|x-authuser|hippie Received: from smtp4.ore.mailhop.org (ip-10-33-12-218.us-west-2.compute.internal [10.33.12.218]) by relay.mailchannels.net (Postfix) with ESMTPA id 4510560385; Mon, 16 Mar 2015 18:52:48 +0000 (UTC) X-Sender-Id: duocircle|x-authuser|hippie Received: from smtp4.ore.mailhop.org (smtp4.ore.mailhop.org [10.21.145.197]) (using TLSv1 with cipher DHE-RSA-AES256-SHA) by 0.0.0.0:2500 (trex/5.4.8); Mon, 16 Mar 2015 18:52:49 +0000 X-MC-Relay: Neutral X-MailChannels-SenderId: duocircle|x-authuser|hippie X-MailChannels-Auth-Id: duocircle X-MC-Loop-Signature: 1426531969357:3506624996 X-MC-Ingress-Time: 1426531969357 Received: from c-73-34-117-227.hsd1.co.comcast.net ([73.34.117.227] helo=ilsoft.org) by smtp4.ore.mailhop.org with esmtpsa (TLSv1.2:DHE-RSA-AES256-GCM-SHA384:256) (Exim 4.82) (envelope-from ) id 1YXa83-0007Dr-80; Mon, 16 Mar 2015 18:52:43 +0000 Received: from revolution.hippie.lan (revolution.hippie.lan [172.22.42.240]) by ilsoft.org (8.14.9/8.14.9) with ESMTP id t2GIqd10023729; Mon, 16 Mar 2015 12:52:39 -0600 (MDT) (envelope-from ian@freebsd.org) X-Mail-Handler: DuoCircle Outbound SMTP X-Originating-IP: 73.34.117.227 X-Report-Abuse-To: abuse@duocircle.com (see https://support.duocircle.com/support/solutions/articles/5000540958-duocircle-standard-smtp-abuse-information for abuse reporting information) X-MHO-User: U2FsdGVkX1++TRiIe+7s9HSC+1bWNjSi Message-ID: <1426531959.95554.11.camel@freebsd.org> Subject: Re: sbuf-related panic From: Ian Lepore To: Shawn Webb Date: Mon, 16 Mar 2015 12:52:39 -0600 In-Reply-To: <1426529019.4766.1.camel@hardenedbsd.org> References: <1426529019.4766.1.camel@hardenedbsd.org> Content-Type: text/plain; charset="us-ascii" X-Mailer: Evolution 3.12.10 FreeBSD GNOME Team Port Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-AuthUser: hippie Cc: "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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 16 Mar 2015 18:52:53 -0000 On Mon, 2015-03-16 at 14:03 -0400, Shawn Webb wrote: > On amd64, doing a Poudriere run. On r280133: > > (kgdb) bt > #0 doadump (textdump=Unhandled dwarf expression opcode 0x93 > ) at pcpu.h:219 > #1 0xffffffff809726a5 in kern_reboot (howto=Unhandled dwarf expression opcode 0x93 > ) at /usr/src/sys/kern/kern_shutdown.c:448 > #2 0xffffffff80972c98 in vpanic (fmt=, ap=) at /usr/src/sys/kern/kern_shutdown.c:747 > #3 0xffffffff80972ac2 in kassert_panic (fmt=) at /usr/src/sys/kern/kern_shutdown.c:635 > #4 0xffffffff809bd5bd in sbuf_delete (s=0xfffffe085d468750) at /usr/src/sys/kern/subr_sbuf.c:103 > #5 0xffffffff809669dd in sysctl_kern_proc_args (oidp=, arg1=, arg2=, req=0xfffffe085d468868) at /usr/src/sys/kern/kern_proc.c:1858 > #6 0xffffffff8097e7b4 in sysctl_root_handler_locked (oid=0xffffffff81533738, arg1=0xfffffe085d46893c, arg2=1, req=0xfffffe085d468868) at /usr/src/sys/kern/kern_sysctl.c:183 > #7 0xffffffff8097e038 in sysctl_root (arg1=, arg2=) at /usr/src/sys/kern/kern_sysctl.c:1660 > #8 0xffffffff8097e5b2 in userland_sysctl (td=, name=0xfffffe085d468930, namelen=, old=, oldlenp=, inkernel=, > new=, newlen=, retval=, flags=0) at /usr/src/sys/kern/kern_sysctl.c:1764 > #9 0xffffffff8097e3e4 in sys___sysctl (td=0xfffff802521324b0, uap=0xfffffe085d468a40) at /usr/src/sys/kern/kern_sysctl.c:1690 > #10 0xffffffff80da1bca in amd64_syscall (td=0xfffff802521324b0, traced=0) at subr_syscall.c:133 > #11 0xffffffff80d7f3cb in Xfast_syscall () at /usr/src/sys/amd64/amd64/exception.S:395 > #12 0x000002759e502b7a in ?? () That one should be fixed in r280149, sorry about that. For some reason I never hit the triggering condition in testing, but it seems that just about everyone else in the world did. :/ There are a couple locking-related fixes still needed which might trigger a witness warning, they should be fixed soon as well. -- Ian