Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754547AbYBPI5z (ORCPT ); Sat, 16 Feb 2008 03:57:55 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751885AbYBPI5s (ORCPT ); Sat, 16 Feb 2008 03:57:48 -0500 Received: from agminet01.oracle.com ([141.146.126.228]:13791 "EHLO agminet01.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752014AbYBPI5q (ORCPT ); Sat, 16 Feb 2008 03:57:46 -0500 Date: Sat, 16 Feb 2008 00:54:54 -0800 From: Joel Becker To: Jeremy Fitzhardinge Cc: Jody Belka , linux-kernel@vger.kernel.org, Ingo Molnar , Thomas Gleixner , Ian Campbell , "H. Peter Anvin" , "Eric W. Biederman" , Andi Kleen , Mika Penttila Subject: Re: 2.6.25-rc1 xen pvops regression Message-ID: <20080216085454.GA24570@ca-server1.us.oracle.com> Mail-Followup-To: Jeremy Fitzhardinge , Jody Belka , linux-kernel@vger.kernel.org, Ingo Molnar , Thomas Gleixner , Ian Campbell , "H. Peter Anvin" , "Eric W. Biederman" , Andi Kleen , Mika Penttila References: <20080212235404.GY7980@pimb.org> <47B2DBA5.6030001@goop.org> <20080214022744.GA4160@mail.oracle.com> <47B3F2DC.8080707@goop.org> <20080215202336.GE26034@mail.oracle.com> <47B64E0A.1020007@goop.org> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <47B64E0A.1020007@goop.org> X-Burt-Line: Trees are cool. X-Red-Smith: Ninety feet between bases is perhaps as close as man has ever come to perfection. User-Agent: Mutt/1.5.16 (2007-06-11) X-Brightmail-Tracker: AAAAAQAAAAI= X-Brightmail-Tracker: AAAAAQAAAAI= X-Whitelist: TRUE X-Whitelist: TRUE Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2129 Lines: 63 On Sat, Feb 16, 2008 at 01:44:26PM +1100, Jeremy Fitzhardinge wrote: > Joel Becker wrote: > >> (XEN) mm.c:1825:d109 Bad type (saw 0000000028000001 != exp >> 00000000e0000000) for mfn 3a2f0f (pfn f0) >> (XEN) mm.c:649:d109 Error getting mfn 3a2f0f (pfn f0) from L1 entry >> 00000003a2f0f063 for dom109 >> (XEN) mm.c:1825:d109 Bad type (saw 0000000028000001 != exp >> 00000000e0000000) for mfn 3a2f0f (pfn f0) >> (XEN) mm.c:649:d109 Error getting mfn 3a2f0f (pfn f0) from L1 entry >> 00000003a2f0f063 for dom109 >> (XEN) mm.c:3331:d109 ptwr_emulate: could not get_page_from_l1e() >> > > Hm, I have a suspicion about what this might be. I'll haven't tried > reproducing it yet though. > >> (XEN) Unhandled page fault in domain 109 on VCPU 0 (ec=0003) >> (XEN) Pagetable walk from 00000000c01687f0: >> (XEN) L4[0x000] = 00000003a2933027 00000000000006cc >> (XEN) L3[0x003] = 000000039afea027 0000000000000005 >> (XEN) L2[0x000] = 000000039bfb7067 0000000000001048 (XEN) L1[0x168] = >> 00000003a2e97061 0000000000000168 >> (XEN) domain_crash_sync called from entry.S >> (XEN) Domain 109 (vcpu#0) crashed on cpu#2: >> (XEN) ----[ Xen-3.1.3-rc3 x86_64 debug=n Not tainted ]---- >> (XEN) CPU: 2 >> (XEN) RIP: e019:[<00000000c04040bd>] >> > > What does this EIP correspond to in your kernel? Also: > > c01687f0 c0417ab6 c040288f c040299a c0403270 > > (as guesses of potential callers to try and work out a stack trace). ksymoops is no help at all, but I got these from objdump of vmlinux: c04040bd xen_set_pte c0417ab6 set_pte_present c040288f set_bit c040299a __raw_spin_unlock c0403270 __set_64bit Joel -- Dort wo man B?cher verbrennt, verbrennt man am Ende auch Mensch. (Wherever they burn books, they will also end up burning people.) - Heinrich Heine Joel Becker Principal Software Developer Oracle E-mail: joel.becker@oracle.com Phone: (650) 506-8127 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/