WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

Re: [Xen-devel] Process irqbalance: BUG: unable to handle kernel paging

To: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] Process irqbalance: BUG: unable to handle kernel paging request - with 2.6.32.18 pv-ops & xen 4.0.1
From: Bruce Edge <bruce.edge@xxxxxxxxx>
Date: Tue, 31 Aug 2010 11:17:06 -0700
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Tue, 31 Aug 2010 11:17:51 -0700
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:cc:content-type; bh=zo32Wdf0PSp3JRTujbzq1ip/npoPYHqHzLeNYZ+r4q4=; b=QK0Vd69WkWGuiHCV3/9gb/+3iYYMS/siwQVc238SFQVoI0d3Za0zlEYgZeITndMrpF qVVaRRgaGxx5Ol+ETS4xq8b4Lh3zT8IcelXBgIhgiIaFRD0Ov3EkzwjkBae7CC9qfJ+T 5LEqUqdQdEnB9i7RYsZ7oG45N4qbeG3aAGG04=
Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=PUEdFvL3AYZMim0mhILPKah9im1sWme+XOpXEQps8sQ2zAonIoOi0KRf7qBYtMVEF8 +Se0frF+PiN66pM6eEctb2NfqWlN0QNgQc/lUKl26DvnV+ZS58tKvDsDvWIBJ/u/D9SD /V4qhGM30/634Lv8MIgjPm5a7gn//4WrahvFE=
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <4C7D4355.4070100@xxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <AANLkTikwV54KeLiCXQM_a7Uv8wVTA9hruYR6AH5ivNq-@xxxxxxxxxxxxxx> <4C7D4355.4070100@xxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx

On Tue, Aug 31, 2010 at 11:00 AM, Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:
 On 08/30/2010 04:12 PM, Bruce Edge wrote:
> Using Jeremy's latest 2.6.32 pv-ops kernel for both dom0 and domU, I
> get this BUG at domU boot time.
>
> [   14.780699] BUG: unable to handle kernel paging request at
> 00000002dd253558
> [   14.780787] RAX: 0000000000000000 RBX: 0000000000000020 RCX:
> 0000000000000020
> [   14.780793] RDX: 0000000000000020 RSI: 0000000000000ffe RDI:
> 0000000000000000
> [   14.780799] RBP: ffff8800717bde68 R08: 0000000000000023 R09:
> 0000000000000001
> [   14.780806] R10: ffffffff8182d004 R11: 0000000000000000 R12:
> 0000000000000000
> [   14.780812] R13: 00000002dd253558 R14: 0000000000000ffe R15:
> ffff88000b515000
> [   14.780822] FS:  00007feac5f86720(0000) GS:ffff880011423000(0000)
> knlGS:0000000000000000
> [   14.780829] CS:  e033 DS: 0000 ES: 0000 CR0: 000000008005003b
> [   14.780834] CR2: 00000002dd253558 CR3: 00000000789db000 CR4:
> 0000000000002660
> [   14.780841] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
> 0000000000000000
> [   14.780847] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
> 0000000000000400
> [   14.780854] Process irqbalance (pid: 880, threadinfo
> ffff8800717bc000, task ffff88007306c7e0)
> [   14.780861] Stack:
> [   14.780864]  ffffffff819180a0 ffff88000b515000 ffffffff81944798
> ffff88000a861da8
> [   14.780874] <0> ffff8800717bdf48 ffff88000aa780a0 ffff8800717bde88
> ffffffff8135760b
> [   14.780885] <0> ffff88000a861da8 fffffffffffffffb ffff8800717bdea8
> ffffffff814061ef
> [   14.780898] Call Trace:
> [   14.780905]  [<ffffffff8135760b>] local_cpus_show+0x4b/0x70
> [   14.780913]  [<ffffffff814061ef>] dev_attr_show+0x2f/0x70
> [   14.780921]  [<ffffffff811df8ed>] sysfs_read_file+0x10d/0x1f0
> [   14.781108]  [<ffffffff8116d018>] vfs_read+0xc8/0x1a0
> [   14.781114]  [<ffffffff8116d1f5>] sys_read+0x55/0x90
> [   14.781123]  [<ffffffff810151f2>] system_call_fastpath+0x16/0x1b
> [   14.781129] Code: 45 31 e4 83 e1 e0 89 cb 83 eb 20 78 62 66 90 89
> d8 89 d9 41 b9 01 00 00 00 c1 f8 06 83 e1 3f 44 8d 42 03 48 98 49 63
> fc 44 89 f6 <49> 8b 44 c5 00 49 8d 3c 3f 44 29 e6 41 c1 f8 02 48 d3 e8
> 89 d1
> [   14.781206] RIP  [<ffffffff8134019c>] bitmap_scnprintf+0x5c/0xc0
> [   14.781213]  RSP <ffff8800717bde38>
> [   14.781217] CR2: 00000002dd253558
> [   14.781224] ---[ end trace ec14b09e94a4d7d5 ]---
>
> The system appears stable after this, although no additional testing
> has been done - this is a fresh conversion from hvm to pvops and has
> zero mileage on it.
>
> dom0/domU config is attached - it's a slightly modified version of
> Pasi's recommended configs.

How many cpus do you have configured and online?

   J


Lots :-)

I'm allocating 14 cores to this domU:

    (vcpus 14)
    (cpus ((2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15)))
    (on_reboot restart)
    (on_poweroff destroy)
    (maxmem 2048)
    (memory 2048)
    (online_vcpus 14)


-Bruce

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
<Prev in Thread] Current Thread [Next in Thread>