From owner-freebsd-xen@FreeBSD.ORG Sat Oct 24 23:50:03 2009 Return-Path: Delivered-To: freebsd-xen@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C2423106566B for ; Sat, 24 Oct 2009 23:50:03 +0000 (UTC) (envelope-from carsten@heesch.me.uk) Received: from mx2.the-ally.co.uk (mx2.the-ally.co.uk [95.154.227.236]) by mx1.freebsd.org (Postfix) with ESMTP id 593EE8FC13 for ; Sat, 24 Oct 2009 23:50:02 +0000 (UTC) Received: from mx2.the-ally.co.uk (localhost.localdomain [127.0.0.1]) by mx2.the-ally.co.uk (Postfix) with ESMTP id 75B72ED0997; Sun, 25 Oct 2009 00:31:51 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=heesch.me.uk; h=subject :mime-version:content-type:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; s= selector1; bh=rxh2hrzUQi/6KxDMSWq+ZR1VREw=; b=CJUpPbwA7zHEBiFU5m Ol+Uy6YVTOfSgQ4k+EQkqT6UbjGxhEw6E00sN1wzpSOx9t4Occe1HAcd2DYwwMgx 1opDkB7pe6CzMs+6HBW8nTD1NArV+wxzhU/GFhdzwzgPhTSnTiywVNzkmlsPyxFF 2QqssXWpLoOnOdSdwsgn2S+kY= DomainKey-Signature: a=rsa-sha1; c=nofws; d=heesch.me.uk; h=subject :mime-version:content-type:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; q=dns; s= selector1; b=bYPPT41XmKqbiHTXJhJ1P/Dav3eG/i/+vSOQBfIaXShPM6Qugj9 xUbTD+DXeXUyPWsjnwEyHiwiJFnXmVhBr4NWlNCCAc4H7o3rxzeWIKhqUTomaP9H 5MtMyqfby0uxDPLPCllG5E1TqE920RH2OYMSqbfsusBHXB6j9UN1rOYI= Received: from [10.2.2.20] (unknown [10.2.2.20]) by mx2.the-ally.co.uk (Postfix) with ESMTP id 32D4FED0994; Sun, 25 Oct 2009 00:31:51 +0100 (BST) Mime-Version: 1.0 (Apple Message framework v1076) Content-Type: text/plain; charset=us-ascii; format=flowed; delsp=yes From: Carsten Heesch In-Reply-To: <850CF1B7-499E-4468-9045-19A2803E6D05@ossafe.org> Date: Sun, 25 Oct 2009 00:31:50 +0100 Content-Transfer-Encoding: 7bit Message-Id: <3941E1B9-6CD6-4D9A-AF1C-93401F571FCE@heesch.me.uk> References: <850CF1B7-499E-4468-9045-19A2803E6D05@ossafe.org> To: Carsten Heesch X-Mailer: Apple Mail (2.1076) Cc: freebsd-xen@freebsd.org Subject: Re: Problem: Xen 3.3.1 with FreeBSD 8.0 RC1 X-BeenThere: freebsd-xen@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussion of the freebsd port to xen - implementation and usage List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 24 Oct 2009 23:50:03 -0000 I realised that it's still possible to use 8.0-BETA* as a target for freebsd-update. So I investigated a bit further. For whatever it's worth: The problems described earlier started with BETA-4. BETA-3 is fine with both GENERIC and XENHVM kernel, except that I see this on the console and in dmesg every now and then (with both kernels): lock order reversal: 1st 0xffffff8014810620 bufwait (bufwait) @ /usr/src/sys/kern/ vfs_bio.c:2559 2nd 0xffffff00015a7c00 dirhash (dirhash) @ /usr/src/sys/ufs/ufs/ ufs_dirhash.c:285 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2a _witness_debugger() at _witness_debugger+0x2e witness_checkorder() at witness_checkorder+0x81e _sx_xlock() at _sx_xlock+0x55 ufsdirhash_acquire() at ufsdirhash_acquire+0x33 ufsdirhash_add() at ufsdirhash_add+0x19 ufs_direnter() at ufs_direnter+0x88b ufs_makeinode() at ufs_makeinode+0x31c VOP_CREATE_APV() at VOP_CREATE_APV+0x8d vn_open_cred() at vn_open_cred+0x423 kern_openat() at kern_openat+0x179 syscall() at syscall+0x1af Xfast_syscall() at Xfast_syscall+0xe1 --- syscall (5, FreeBSD ELF64, open), rip = 0x800e32dfc, rsp = 0x7fffffffe608, rbp = 0x1a4 --- I though this might be XENHVM kernel related, but it happens with GENERIC kernel as well. Not sure if this is related to XEN at all. Cheers Carsten