From owner-freebsd-current@FreeBSD.ORG Fri Oct 26 10:17:51 2007 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E2F6916A419 for ; Fri, 26 Oct 2007 10:17:51 +0000 (UTC) (envelope-from gkozyrev@gmail.com) Received: from ug-out-1314.google.com (ug-out-1314.google.com [66.249.92.175]) by mx1.freebsd.org (Postfix) with ESMTP id 7353713C465 for ; Fri, 26 Oct 2007 10:17:51 +0000 (UTC) (envelope-from gkozyrev@gmail.com) Received: by ug-out-1314.google.com with SMTP id y2so752701uge for ; Fri, 26 Oct 2007 03:17:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=IFT7WDH4yX2zTbxTdgsN8qWet9pgidGuZ4FejsD1iBw=; b=oqLL4cvGG05y2TpC1QdmgPyWqsp8k3It6Qc5J/W3Ys2rF9KHmxESzgUWv4raeJ+PfKMYTMWfQ+rLxxiqM3ZXPkc527Reer2KVvR6FFH0/pj4Nv/e4DBc5Dr2CxZdYMmMeW++OojPsLcoYAR8v4K/11+7S2Qke+fAsssavIxIVvw= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=k0TMTpIaX3cVsPpJpW5sAe6tyMwBp5WYekecYvVgiqSR3YhAGhHQ1RwPPl57NhURtBjUJxNDzuhJu6WdYq+U4l+9lHTDL8gvrK3y4pZ58Ev9TIzTg0UNn3IqdKiaYSIQn707T3eXGgL4vISmyPKHu7MMdlb8K56CSdKSwfL7IXk= Received: by 10.78.157.19 with SMTP id f19mr2114031hue.1193392327430; Fri, 26 Oct 2007 02:52:07 -0700 (PDT) Received: by 10.78.148.14 with HTTP; Fri, 26 Oct 2007 02:52:07 -0700 (PDT) Message-ID: Date: Fri, 26 Oct 2007 12:52:07 +0300 From: "Gleb Kozyrev" To: "John Baldwin" In-Reply-To: <200710251435.58984.jhb@freebsd.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <200710251435.58984.jhb@freebsd.org> Cc: freebsd-current@freebsd.org Subject: Re: Deadlock, exclusive sx so_rcv_sx, amd64 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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: Fri, 26 Oct 2007 10:17:52 -0000 On 25/10/2007, John Baldwin wrote: > > Running rtorrent and ftp brings my system to a deadlock > > in a few hours. Kernel still responds to pings and sends some > > TCP acks. ... > > Please suggest any other commands to run in DDB if needed. > > Cores are saved. > > show sleepchain will show if it's a real deadlock or not. > This time the freeze was a matter of minutes. db> ps pid ppid pgrp uid state wmesg wchan cmd 1229 991 991 0 ? smbd 1201 1195 1201 1001 SL+ pfault 0xffffffff80b1359c rtorrent 1199 1193 1199 1001 Ss+ ttyin 0xffffff0001211410 tcsh 1197 1193 1197 1001 Ss+ ttyin 0xffffff0001218810 tcsh 1195 1193 1195 1001 Ss+ pause 0xffffff000624a0c0 tcsh 1193 1192 1193 1001 SLs pfault 0xffffffff80b1359c screen 1192 1190 1190 1001 S+ pause 0xffffff00013c10c0 screen 1190 1189 1190 1001 Ss+ pause 0xffffff00065b40c0 tcsh 1189 1187 1187 1001 S select 0xffffffff80af79d0 sshd 1187 1097 1187 0 Ss sbwait 0xffffff00065346cc sshd ... db> show alllocks Process 1187 (sshd) thread 0xffffff00065ad350 (100166) exclusive sx so_rcv_sx r = 0 (0xffffff0006534670) locked @ /usr/src/sys/kern/uipc_sockbuf.c:145 db> show sleepchain 1187 thread 100166 (pid 1187, sshd) sleeping on 0xffffff00065346cc "sbwait" db> show sleepchain 1201 thread 100164 (pid 1201, rtorrent) sleeping on 0xffffffff80b1359c "pfault" Nothing interesting I guess... Maybe this is not a deadlock, what else can cause such a freeze? I won't reboot it for a while -- maybe someone can suggest anything else. -- With best regards, Gleb Kozyrev.