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

[Xen-devel] BUG: scheduling while atomic: xenwatch

To: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] BUG: scheduling while atomic: xenwatch
From: Liwei <xieliwei@xxxxxxxxx>
Date: Wed, 29 Jun 2011 21:24:20 +0800
Delivery-date: Wed, 29 Jun 2011 06:27:15 -0700
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:from:date:message-id:subject:to:content-type; bh=YFksNH73xdElQXUYD3DU5fLhpczYMCU2gVAWLK/rYGM=; b=tZHjDSowP+XDBCxReXbwBWLhmXAdgVbGCJO4EzmYWLpRZPRHlzoNKx0RzRpmU+Kbh9 wqcpU/xgp8zJ6cZXRb8ddwlx913lGF5MQDOrFECRva9u+9Hy4J5BijX2AHpaN462+YLY WmNZMZNdiw9Eq+Jvr8yIe1ljz/qL9orPVuOxg=
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
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>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Hello list,
    I've been receiving these bug traces in my kernel logs since
switching from Debian's kernel/xen packages to compiling my own
kernel/xen. They don't seem to cause any visible trouble so I didn't
bother to report them before, but I thought I'd report them today. The
bug traces do not occur when using Debian packages.

[ 1423.038710] Pid: 31, comm: xenwatch Not tainted
3.0.0-rc4-custom-xen-amd64+ #1
[ 1423.038713] Call Trace:
[ 1423.038718]  [<ffffffff8131bd1d>] ? __schedule_bug+0x3e/0x52
[ 1423.038722]  [<ffffffff8132153a>] ? schedule+0x90/0x64e
[ 1423.038727]  [<ffffffff81006b4d>] ? xen_force_evtchn_callback+0x9/0xa
[ 1423.038732]  [<ffffffff810071b2>] ? check_events+0x12/0x20
[ 1423.038737]  [<ffffffff811fcfd5>] ? read_reply+0xa4/0x123
[ 1423.038742]  [<ffffffff8106060f>] ? add_wait_queue+0x3c/0x3c
[ 1423.038747]  [<ffffffff811fd0f9>] ? xs_talkv+0xa5/0x167
[ 1423.038752]  [<ffffffff811fd61a>] ? xenbus_write+0x73/0x94
[ 1423.038756]  [<ffffffff811fd6d6>] ? xenbus_printf+0x9b/0xbf
[ 1423.038761]  [<ffffffff811b8927>] ? xen_pcibk_publish_pci_dev+0xa2/0xa2
[ 1423.038766]  [<ffffffff811b8a4a>] ? xen_pcibk_publish_pci_root+0x123/0x180
[ 1423.038771]  [<ffffffff810e5f99>] ? virt_to_head_page+0x6/0x29
[ 1423.038775]  [<ffffffff811fd6e2>] ? xenbus_printf+0xa7/0xbf
[ 1423.038780]  [<ffffffff811ba648>] ? xen_pcibk_publish_pci_roots+0x7f/0xab
[ 1423.038785]  [<ffffffff811b8d56>] ? xen_pcibk_setup_backend+0x1e4/0x252
[ 1423.038791]  [<ffffffff811b9258>] ? xen_pcibk_xenbus_probe+0xde/0xfe
[ 1423.038795]  [<ffffffff811fe2ce>] ? xenbus_dev_probe+0x6f/0xf6
[ 1423.038800]  [<ffffffff81230589>] ? driver_probe_device+0xa8/0x138
[ 1423.038805]  [<ffffffff81230688>] ? __driver_attach+0x6f/0x6f
[ 1423.038810]  [<ffffffff8122f617>] ? bus_for_each_drv+0x47/0x7b
[ 1423.038814]  [<ffffffff812304aa>] ? device_attach+0x6f/0x8f
[ 1423.038818]  [<ffffffff8122fddb>] ? bus_probe_device+0x1f/0x37
[ 1423.038823]  [<ffffffff8122e771>] ? device_add+0x3e7/0x587
[ 1423.038828]  [<ffffffff8103f759>] ? get_parent_ip+0x9/0x1b
[ 1423.038832]  [<ffffffff812371b9>] ? pm_runtime_init+0xb5/0xc9
[ 1423.038837]  [<ffffffff811fe5f8>] ? xenbus_probe_node+0x137/0x1d5
[ 1423.038842]  [<ffffffff811fe81e>] ? xenbus_dev_changed+0x157/0x189
[ 1423.038847]  [<ffffffff8103f759>] ? get_parent_ip+0x9/0x1b
[ 1423.038852]  [<ffffffff811fcf00>] ? xenwatch_thread+0xf5/0x126
[ 1423.038856]  [<ffffffff8106060f>] ? add_wait_queue+0x3c/0x3c
[ 1423.038861]  [<ffffffff811fce0b>] ? xenbus_thread+0x211/0x211
[ 1423.038865]  [<ffffffff8105ff6e>] ? kthread+0x76/0x7e
[ 1423.038869]  [<ffffffff813295a4>] ? kernel_thread_helper+0x4/0x10
[ 1423.038874]  [<ffffffff813286b3>] ? int_ret_from_sys_call+0x7/0x1b
[ 1423.038879]  [<ffffffff813233e5>] ? retint_restore_args+0x5/0x6
[ 1423.038883]  [<ffffffff813295a0>] ? gs_change+0x13/0x13
[ 1423.039097] BUG: scheduling while atomic: xenwatch/31/0x00000002
[ 1423.039147] Modules linked in: tun xt_physdev iptable_filter
ip_tables x_tables parport_pc ppdev lp parport bluetooth rfkill
cpufreq_userspace cpufreq_pow
ersave cpufreq_stats cpufreq_conservative mperf binfmt_misc fuse nfsd
exportfs nfs lockd fscache auth_rpcgss nfs_acl sunrpc bridge stp ext3
jbd loop firewire
_sbp2 firewire_core crc_itu_t cxgb3 mdio i2c_i801 i2c_core mxm_wmi
psmouse evdev pcspkr serio_raw thermal_sys wmi button acpi_processor
ext4 mbcache jbd2 crc
16 dm_mod sg sd_mod sr_mod crc_t10dif cdrom ahci libahci mvsas libsas
sky2 libata scsi_transport_sas scsi_mod [last unloaded:
scsi_wait_scan]

    Haven't really checked and confirmed, but they seem to occur on
starting and stopping VMs.
Xen:
# hg log|head
changeset:   23632:33717472f37e
tag:         tip
user:        Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
date:        Tue Jun 28 18:15:44 2011 +0100
summary:     libxc: Squash xc_e820.h (and delete) into xenctrl.h

Kernel:
# git log|head
commit 3dc33d5af47bd3e216f71f47f1f4c7ea4578cca4
Merge: bd687c5 bccaeaf
Author: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
Date:   Thu Jun 23 17:10:21 2011 -0700

Liwei

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel

<Prev in Thread] Current Thread [Next in Thread>
  • [Xen-devel] BUG: scheduling while atomic: xenwatch, Liwei <=