From owner-freebsd-questions@FreeBSD.ORG Mon Nov 11 17:29:57 2013 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 261E1DF for ; Mon, 11 Nov 2013 17:29:57 +0000 (UTC) (envelope-from tom@0x544745.com) Received: from mail-oa0-f45.google.com (mail-oa0-f45.google.com [209.85.219.45]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id E6CA728C2 for ; Mon, 11 Nov 2013 17:29:56 +0000 (UTC) Received: by mail-oa0-f45.google.com with SMTP id m1so2619632oag.32 for ; Mon, 11 Nov 2013 09:29:50 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:date:message-id:subject:from:to :content-type; bh=xU1v/1/LClj87DTUEF6YXKX6syWIdcPWmaCLjGta3io=; b=I9umuP4wYVAgNNVq1tLB/oOp2b3kv+bN3OYXHYpgzbtx+zGsGiKhTS2e50ZFpoq/g0 MbGPdgpjYe7tzJ/OGDb+GgAw6QEtmilAOSX1RImL1UICmlKJh1Jly+D/ZvH5MTpD00pA tZRNuyd01imsp7rCdjj10ypIzMEGLTU1ePEHgftYXbNMZC0LhbESETtT0/YV1iMVv0JN sUpK1w9MtBLm0etjFZStOgbNmoW5l7IBQkc6hjcngYB1lygBrWI07zLTRHBZkt4o3skC sKHkWdYrfhxrpBLteYTzZBpqlfhxYWtCY+1PQDPWAa2Sm1ce1k9FRdnpco2wzA502eD9 gQAQ== X-Gm-Message-State: ALoCoQlu7LKYjJ+5K2zplGNIclRRDebUZ5RcJ+a+xjARkv3N3kMFFscCYJRKUozUmll840pvvrSp MIME-Version: 1.0 X-Received: by 10.182.254.2 with SMTP id ae2mr1262192obd.105.1384190989973; Mon, 11 Nov 2013 09:29:49 -0800 (PST) Received: by 10.182.104.169 with HTTP; Mon, 11 Nov 2013 09:29:49 -0800 (PST) Date: Mon, 11 Nov 2013 10:29:49 -0700 Message-ID: Subject: FreeBSD 9.2 crash under load From: Tom Everett To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.14 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Nov 2013 17:29:57 -0000 I'm experiencing a fairly repeatable crash under load. Most recently the crash under load was during numerous rsync jobs, at the same time as cross-compiling NetBSD in a jail. I have the crash log from dmesg (below). What do people typically do in situations like to, to determine if the problem is due to overheating, bad hardware, a kernel bug, bad RAM, etc? Fatal trap 12: page fault while in kernel mode > cpuid = 1; apic id = 01 > fault virtual address = 0xc > fault code = supervisor read data, page not present > instruction pointer = 0x20:0xffffffff80b7442d > stack pointer = 0x28:0xffffff846d11a780 > frame pointer = 0x28:0xffffff846d11a7c0 > 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 = 55420 (rsync) > trap number = 12 > panic: page fault > cpuid = 1 > KDB: stack backtrace: > #0 0xffffffff80947986 at kdb_backtrace+0x66 > #1 0xffffffff8090d9ae at panic+0x1ce > #2 0xffffffff80cf20d0 at trap_fatal+0x290 > #3 0xffffffff80cf2431 at trap_pfault+0x211 > #4 0xffffffff80cf29e4 at trap+0x344 > #5 0xffffffff80cdbd13 at calltrap+0x8 > #6 0xffffffff80b7473e at zone_fetch_slab+0x3e > #7 0xffffffff80b75b8d at uma_zalloc_arg+0x31d > #8 0xffffffff80959f84 at selfdalloc+0x64 > #9 0xffffffff8095bf34 at kern_select+0x594 > #10 0xffffffff8095c32d at sys_select+0x5d > #11 0xffffffff80cf187a at amd64_syscall+0x5ea -- A better world shall emerge based on faith and understanding - Douglas MacArthur