From owner-freebsd-current@FreeBSD.ORG Sun Jun 20 18:36:53 2010 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B68E21065670 for ; Sun, 20 Jun 2010 18:36:53 +0000 (UTC) (envelope-from james-freebsd-current@jrv.org) Received: from zimbra.jrv.org (adsl-70-243-84-11.dsl.austtx.swbell.net [70.243.84.11]) by mx1.freebsd.org (Postfix) with ESMTP id 74D308FC12 for ; Sun, 20 Jun 2010 18:36:53 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by zimbra.jrv.org (Postfix) with ESMTP id A702916A0AC for ; Sun, 20 Jun 2010 13:36:52 -0500 (CDT) X-Virus-Scanned: amavisd-new at zimbra.housenet.jrv Received: from zimbra.jrv.org ([127.0.0.1]) by localhost (zimbra.housenet.jrv [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id G5AFqp+ai1Mx for ; Sun, 20 Jun 2010 13:36:51 -0500 (CDT) Received: from [10.0.2.15] (adsl-70-243-84-14.dsl.austtx.swbell.net [70.243.84.14]) by zimbra.jrv.org (Postfix) with ESMTPSA id AD75716A050 for ; Sun, 20 Jun 2010 13:36:51 -0500 (CDT) Message-ID: <4C1E5FE3.7010907@jrv.org> Date: Sun, 20 Jun 2010 13:37:23 -0500 From: "James R. Van Artsdalen" User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9.1.9) Gecko/20100317 Thunderbird/3.0.4 MIME-Version: 1.0 To: current@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Subject: page fault with the following non-sleepable locks held: exclusive sleep mutex ATA state lock 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: Sun, 20 Jun 2010 18:36:53 -0000 FreeBSD 9.0-CURRENT #1 r209275: Fri Jun 18 08:15:15 CDT 2010 root@CLANK.housenet.jrv:/usr/obj/usr/src/sys/GENERIC amd64 June 17 -CURRENT This panic was seen under VirtualBox on a Windows host. The VM has 2 cores (the host is a Core i7). I this infrequently under a VM. I have yet to see it on real hardware. ... ahcich0: AHCI reset... ahcich0: SATA connect time=0ms status=00000123 ahcich0: ready wait time=0ms ahcich0: AHCI reset done: device found (aprobe0:ahcich0:0:0:0): SIGNATURE: 0000 ugen0.1: at usbus0 uhub0: on usbus0 ugen1.1: at usbus1 uhub1: on usbus1 ahcich1: AHCI reset... Kernel page fault with the following non-sleepable locks held: exclusive sleep mutex ATA state lock (ATA state lock) r = 0 (0xffffff0002a922c0) locked @ /usr/src/sys/dev/ata/ata-all.c:503 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2a _witness_debugger() at _witness_debugger+0x2e witness_warn() at witness_warn+0x2d2 trap() at trap+0x2ee calltrap() at calltrap+0x8 --- trap 0xc, rip = 0xffffffff805d8ef1, rsp = 0xffffff80000f6b30, rbp = 0xffffff80000f6b70 --- device_get_softc() at device_get_softc+0x1 ata_interrupt() at ata_interrupt+0x9d intr_event_execute_handlers() at intr_event_execute_handlers+0x66 ithread_loop() at ithread_loop+0xb2 fork_exit() at fork_exit+0x12a fork_trampoline() at fork_trampoline+0xe --- trap 0, rip = 0, rsp = 0xffffff80000f6d30, rbp = 0 --- Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 fault virtual address = 0x80 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff805d8ef1 stack pointer = 0x28:0xffffff80000f6b30 frame pointer = 0x28:0xffffff80000f6b70 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 = 12 (irq15: ata1) [ thread pid 12 tid 100025 ] Stopped at device_get_softc+0x1: movq 0x80(%rdi),%rax db>