From owner-freebsd-net@FreeBSD.ORG Fri Jan 14 18:44:31 2011 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5A20D1065674 for ; Fri, 14 Jan 2011 18:44:31 +0000 (UTC) (envelope-from egrosbein@rdtc.ru) Received: from eg.sd.rdtc.ru (eg.sd.rdtc.ru [62.231.161.221]) by mx1.freebsd.org (Postfix) with ESMTP id 9FF1A8FC19 for ; Fri, 14 Jan 2011 18:44:30 +0000 (UTC) Received: from eg.sd.rdtc.ru (localhost [127.0.0.1]) by eg.sd.rdtc.ru (8.14.4/8.14.4) with ESMTP id p0EIiOJI003665; Sat, 15 Jan 2011 00:44:25 +0600 (NOVT) (envelope-from egrosbein@rdtc.ru) Message-ID: <4D309983.70709@rdtc.ru> Date: Sat, 15 Jan 2011 00:44:19 +0600 From: Eugene Grosbein User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; ru-RU; rv:1.9.2.13) Gecko/20110112 Thunderbird/3.1.7 MIME-Version: 1.0 To: Mike Tancsa References: <4D3011DB.9050900@frasunek.com> <4D30458D.30007@sentex.net> In-Reply-To: <4D30458D.30007@sentex.net> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: freebsd-net@freebsd.org, Przemyslaw Frasunek Subject: panic: bufwrite: buffer is not busy??? X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 14 Jan 2011 18:44:31 -0000 On 14.01.2011 18:46, Mike Tancsa wrote: >> I'm using mpd 5.5 on three PPPoE routers, each servicing about 300 PPPoE >> concurrent sessions. Routers are based on Intel SR1630GP hardware platforms and >> runs FreeBSD 7.3-RELEASE. >> >> I'm experiencing stability issues related to Netgraph. None of above routers can >> survive more than 20-30 days of uptime under typical load. There are different >> flavors of kernel panics, but all are somehow related to netgraph. Typical >> backtraces follow > > I also have stability issues on RELENG_8. > > http://www.freebsd.org/cgi/query-pr.cgi?pr=153497 And for one of my servers (8.2-PRERELEASE/amd64 with 4GB RAM) I just cannot obtain crashdump, it cannot finish to write it. For example, it happened an hour ago: Fatal trap 12: page fault while in kernel mode cpuid = 2; apic id = 04 fault virtual address = 0x200000040 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff803cc979 stack pointer = 0x28:0xffffff80ec09c630 frame pointer = 0x28:0xffffff80ec09c6b0 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 32220 (mpd5) trap number = 12 panic: page fault cpuid = 2 Uptime: 23h45m12s Physical memory: 4080 MB Dumping 564 MB:panic: bufwrite: buffer is not busy??? cpuid = 2 Uptime: 23h45m13s Automatic reboot in 15 seconds - press a key on the console to abort Another time it panices and could not finish to write crashdump another way: Fatal trap 12: page fault while in kernel mode cpuid = 3; apic id = 06 fault virtual address = 0x60 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff803e4baf stack pointer = 0x28:0xffffff80e96d1a20 frame pointer = 0x28:0xffffff80e96d1a30 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 0 (dummynet) trap number = 12 panic: page fault cpuid = 3 Uptime: 2d2h33m4s Dumping 4087 MB (3 chunks) chunk 0: 1MB (150 pages)Sleeping thread (tid 100100, pid 0) owns a non-sleepable lock