From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Kendall Subject: Bug#599089: linux-image-2.6.32-5-xen-686: Kernel Panics when using NFS from DomU to Dom0 Date: Tue, 05 Oct 2010 22:14:07 -0400 Message-ID: <4CABDB6F.3020405@gmail.com> References: <4CA9EF03.20407@gmail.com> <1286272060.23155.7508.camel@zakaz.uk.xensource.com> <1286272348.23155.7527.camel@zakaz.uk.xensource.com> <4CAB584A.7090909@goop.org> <1286302967.10974.1.camel@localhost.localdomain> <4CABA91B.5020403@goop.org> Reply-To: Jason Kendall , 599089@bugs.debian.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Resent-To: debian-bugs-dist@lists.debian.org Resent-Message-ID: In-Reply-To: <4CABA91B.5020403@goop.org> List-Post: List-Help: List-Subscribe: List-Unsubscribe: To: Jeremy Fitzhardinge Cc: Ian Campbell , 599089@bugs.debian.org, xen-devel , Arnd Hannemann List-Id: xen-devel@lists.xenproject.org Where do you guys commit? I didn't see it on the kernel git tree, and can't find a debian one. Would this happen to make it into Squeeze soon? ETA? Save me the trouble of a recompile :) Cheers, Jay On 10-10-05 06:39 PM, Jeremy Fitzhardinge wrote: > On 10/05/2010 11:22 AM, Ian Campbell wrote: > >> On Tue, 2010-10-05 at 09:54 -0700, Jeremy Fitzhardinge wrote: >> >>> On 10/05/2010 02:52 AM, Ian Campbell wrote: >>> >>>> On Tue, 2010-10-05 at 10:47 +0100, Ian Campbell wrote: >>>> >>>>> In addition to the kernel logging of the error I get this from the >>>>> hypervisor: >>>>> (XEN) mm.c:2062:d0 Error pfn 16d99: rd=ffff83011fefa000, >>>>> od=0000000000000000, caf=180000000000000, taf=0000000000000000 >>>>> (XEN) mm.c:658:d0 Could not get page ref for pfn 16d99 >>>>> (XEN) mm.c:3621:d0 Could not get page for mach->phys update >>>>> >>>> Adding a bit more logging to the kernel I get: >>>> gnttb_copy_grant_page old c22ebcd8 P:0x1ec8e M:0xc499d F:0x41000000 >>>> gnttb_copy_grant_page new c2324ce0 P:0x1fe18 M:0x11cd32 F:0x40000000 >>>> (XEN) mm.c:2062:d0 Error pfn 1cd32: rd=ffff83011fefa000, od=0000000000000000, caf=180000000000000, taf=0000000000000000 >>>> (XEN) mm.c:658:d0 Could not get page ref for pfn 1cd32 >>>> (XEN) mm.c:3621:d0 Could not get page for mach->phys update >>>> >>>> Notice how MFN 0x11cd32 has become 0x1cd32 by the time it gets to the >>>> hypervisor! >>>> >>> Oy, more of these. It might be better to use PFN_PHYS(). >>> >> I thought there ought to be a helper but couldn't find one, PFN_PHYS >> sounds like a good bet, unless we want to alias it as MFN_MACH or >> something? >> > Doesn't really seem worth it, unless phys_addr_t ends up not being large > enough for a machine address. But I think we rely on that pretty > heavily anyway. > > I've committed it with that change. > > J >