[Xen-users] Dom0 Locked up for 4 hours "BUG: soft lockup - CPU#3 stuck for 61s!"

[Javier Frias <jfrias@xxxxxxxxx>]

I posted a bug about this, but figured I'd ask the mailing list to see
if someone had seen this.
Bugzilla: http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1746

Basically, I had a dom0, after 57 days of non issues, lock up for 4
hours, completely unresponsive, and then recovered. The domU's were
unaffected except for the fact that I could not shut them down. (
since dom0 was unresponsive ). Although I was able to gain access via
xapi/xencenter, and I atleast had some access ( console, status, etc,
all worked via xapi).

 It seemed to have done a lot of paging and swapping, and there were
faults reported in cpu 3. The load was also extremely high on dom0.

Has anyone seen this?  I could only find one other posting with a
similar issue 
http://www.gossamer-threads.com/lists/xen/api/197429?do=post_view_threaded

I'm running XCP release 1.0.0-38754c (xcp), any help greatly appreciated.


BUG: soft lockup - CPU#3 stuck for 61s! [swapper:0]
Modules linked in: nls_utf8 hfsplus bonding tun lockd sunrpc bridge
stp llc ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 xt_state
nf_conntrack xt_tcpudp x_tables binfmt_misc dm_mirror video output sbs
sbshc fan container battery ac parport_pc lp parport nvram joydev
sr_mod cdrom evdev usb_storage usb_libusual usbhid sg thermal button
processor thermal_sys bnx2 serio_raw 8250_pnp rtc_cmos 8250
serial_core rtc_core tpm_tis rtc_lib tpm tpm_bios pcspkr
dm_region_hash dm_log dm_mod ide_gd_mod megaraid_sas sd_mod scsi_mod
ext3 jbd uhci_hcd ohci_hcd ehci_hcd usbcore fbcon font tileblit
bitblit softcursor [last unloaded: ip_tables]

Pid: 0, comm: swapper Not tainted
(2.6.32.12-0.7.1.xs1.0.0.298.170582xen #1) PowerEdge R710
EIP: 0061:[<c01013a7>] EFLAGS: 00000246 CPU: 3
EIP is at 0xc01013a7
EAX: 00000000 EBX: 00000001 ECX: 00000000 EDX: ee853f78
ESI: 00117f58 EDI: 00000003 EBP: ee853f90 ESP: ee853f74
 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0069
CR0: 8005003b CR2: b7736000 CR3: 0d9f4000 CR4: 00002660
DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
DR6: ffff0ff0 DR7: 00000400
Call Trace:
 [<c0107035>] ? xen_safe_halt+0xb5/0x150
 [<c010ac7e>] xen_idle+0x1e/0x50
 [<c0102a7b>] cpu_idle+0x3b/0x60
 [<c037b00d>] cpu_bringup_and_idle+0xd/0x10

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