From owner-freebsd-current@freebsd.org Wed Jul 27 01:19:07 2016 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id CB593BA3F3F for ; Wed, 27 Jul 2016 01:19:07 +0000 (UTC) (envelope-from jkim@niksun.com) Received: from APC01-SG2-obe.outbound.protection.outlook.com (mail-sg2apc01on0090.outbound.protection.outlook.com [104.47.125.90]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (Client CN "mail.protection.outlook.com", Issuer "Microsoft IT SSL SHA2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 2C65D1F5F for ; Wed, 27 Jul 2016 01:19:06 +0000 (UTC) (envelope-from jkim@niksun.com) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=niksunipl.onmicrosoft.com; s=selector1-niksun-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=YAgP0EORWteRNtKSM5SRkM0MMbs97M+IuF/LkEjFupA=; b=hNzvIDiD5yySpggaQz76GrC35LJsNDvWL9GlApoaYJupBFWApH7p3WqNGQrNIZLhy12/UFRVdsPAfxEoi4yI6uiSU2kdLczq3nylJYfkMrJS0fCMwrwHlt77jb7T3t/uMXcFqD5j+DT5D2FHpCMkTDBEWRd3KlR7ePqI2r1uroo= Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=jkim@niksun.com; Received: from hammer.pct.niksun.com (24.104.71.38) by SG2PR0301MB2015.apcprd03.prod.outlook.com (10.167.80.13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id 15.1.544.10; Mon, 25 Jul 2016 23:43:42 +0000 Subject: Re: Panic when loading vboxdrv module To: Randy Westlund , References: <20160725191314.GA10757@gmail.com> <92c7634b-8f19-eccd-75a0-68e5fd98e597@FreeBSD.org> From: Jung-uk Kim Organization: NIKSUN, Inc. 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I just >> rebuilt the module, so I know they're in sync. When I boot with >> vboxdrv_load="YES" in /etc/loader.conf, I get this panic during boot: >> >>> panic: mutex Giant owned at /usr/src/sys/kern/kern_sync.c:406 >>> cpuid = 0 >>> KDB: stack backtrace: >>> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b >>> vpanic() at vpanic+0x182 >>> panic() at panic+0x43 >>> __mtx_assert() at __mtx_assert+0xd1 >>> mi_switch() at mi_switch+0x7b >>> sleepq_switch() at sleepq_switch+0x7e >>> sleepq_timedwait() at sleepq_timedwait+0x43 >>> rtR0SemEventWait() at rtR0SemEventWait+0x267 >>> supdrvGipCreate() at supdrvGipCreate+0x7f6 >>> supdrvInitDexExt() at supdrvInitDexExt+0x18f >>> VBoxDrvFreeBSDModuleEvent() at VBoxDrvFreeBSDModuleEvent+0x49 >>> module_register_init() at module_register_init+0xb0 >>> mi_startup() at mi_startup+0x118 >>> btext() at btext+0x2c >>> KDB: enter: panic >>> [ thread pid 0 tid 100000 ] >>> Stopped at kdb_enter+0x3b: movq $0,kdb_why >> >> I'm not sure whether this is a problem with the base system or the port, >> but this happens every time I boot with the module enabled. > > emulators/virtualbox-ose-kmod is causing the trouble and this problem is > well known. To work around it, remove WITNESS option from kernel > configuration for now. Oops, I meant INVARIANTS. Anyway, it should be fixed in r419083. I understand you have a panic with aio(4) but that's a separate issue. Jung-uk Kim