From owner-freebsd-bugs@FreeBSD.ORG Mon Apr 4 07:10:11 2011 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7EE781065672 for ; Mon, 4 Apr 2011 07:10:11 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 3F0D68FC1F for ; Mon, 4 Apr 2011 07:10:11 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.4/8.14.4) with ESMTP id p347AB3o083933 for ; Mon, 4 Apr 2011 07:10:11 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.4/8.14.4/Submit) id p347ABvN083932; Mon, 4 Apr 2011 07:10:11 GMT (envelope-from gnats) Resent-Date: Mon, 4 Apr 2011 07:10:11 GMT Resent-Message-Id: <201104040710.p347ABvN083932@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Nikita Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5CE7F106564A for ; Mon, 4 Apr 2011 07:05:30 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from red.freebsd.org (red.freebsd.org [IPv6:2001:4f8:fff6::22]) by mx1.freebsd.org (Postfix) with ESMTP id 498A48FC0C for ; Mon, 4 Apr 2011 07:05:30 +0000 (UTC) Received: from red.freebsd.org (localhost [127.0.0.1]) by red.freebsd.org (8.14.4/8.14.4) with ESMTP id p3475UKo075761 for ; Mon, 4 Apr 2011 07:05:30 GMT (envelope-from nobody@red.freebsd.org) Received: (from nobody@localhost) by red.freebsd.org (8.14.4/8.14.4/Submit) id p3475UBs075760; Mon, 4 Apr 2011 07:05:30 GMT (envelope-from nobody) Message-Id: <201104040705.p3475UBs075760@red.freebsd.org> Date: Mon, 4 Apr 2011 07:05:30 GMT From: Nikita To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.1 Cc: Subject: kern/156168: Kernel panic under concurrent access over NFS X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 04 Apr 2011 07:10:11 -0000 >Number: 156168 >Category: kern >Synopsis: Kernel panic under concurrent access over NFS >Confidential: no >Severity: critical >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Apr 04 07:10:10 UTC 2011 >Closed-Date: >Last-Modified: >Originator: Nikita >Release: FreeBSD 8.2-RELEASE #0 >Organization: >Environment: FreeBSD achilles.hstg.ru 8.2-RELEASE FreeBSD 8.2-RELEASE #0: Fri Feb 18 02:24:46 UTC 2011 root@almeida.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC i386 >Description: I have 3 apache22-itk web servers with DOCUMENT_ROOT shared over NFS. Sometimes i get kernel panic: Fatal trap 12: page fault while in kernel mode cpuid = 3; apic id = 03 fault virtual address = 0x10 fault code = supervisor write, page not present instruction pointer = 0x20:0xc0aa3236 stack pointer = 0x28:0xea1ae528 frame pointer = 0x28:0xea1ae5f4 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 78988 (httpd) trap number = 12 panic: page fault cpuid = 3 KDB: stack backtrace: #0 0xc08e0d07 at kdb_backtrace+0x47 #1 0xc08b1dc7 at panic+0x117 #2 0xc0be4b43 at trap_fatal+0x323 #3 0xc0be4dc0 at trap_pfault+0x270 #4 0xc0be5305 at trap+0x465 #5 0xc0bcbebc at calltrap+0x6 #6 0xc0aa89c7 at clnt_call_private+0xf7 #7 0xc0a97dcb at nlm_get_rpc+0x19b #8 0xc0a98379 at nlm_host_get_rpc+0x169 #9 0xc0a949eb at nlm_clearlock+0xeb #10 0xc0a95d2a at nlm_advlock_internal+0x9ca #11 0xc0a9651a at nlm_advlock+0x3a #12 0xc0a80239 at nfs_advlock+0xa9 #13 0xc0c038c7 at VOP_ADVLOCK_APV+0x47 #14 0xc0875dee at closef+0xfe #15 0xc087653f at kern_close+0x17f #16 0xc087661a at close+0x1a #17 0xc08eca39 at syscallenter+0x329 Uptime: 6d22h54m7s Physical memory: 3059 MB Dumping 335 MB: 320 304 288 272 256 240 224 208 192 176 160 144 128 112 96 80 64 48 32 16 >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted: