Hi,<div><br></div><div>I have one KVM instance (centos 5) that keeps crashing and i see the message log with the following:</div><div><br></div><div><div>Oct 14 16:24:48 localhost kernel: psmouse.c: Explorer Mouse at isa0060/serio1/input0 lost synchronization, throwing 1 bytes away.</div>
<div>Oct 14 16:24:49 localhost kernel: BUG: soft lockup - CPU#0 stuck for 12s! [ntpd:2363]</div><div>Oct 14 16:24:49 localhost kernel: CPU 0:</div><div>Oct 14 16:24:49 localhost kernel: Modules linked in: backupdriver(PU) ipv6 xfrm_nalgo crypto_api autofs4 hidp rfcomm l2cap bluetooth lockd sunrpc talpa_pedevice(U) dm_mirror dm_multipath scsi_dh video backlight sbs power_meter hwmon i2c_ec dell_wmi wmi button battery asus_acpi acpi_memhotplug ac parport_pc lp parport floppy virtio_balloon virtio_pci ide_cd i2c_piix4 virtio_ring 8139too cdrom 8139cp pcspkr i2c_core virtio mii serio_raw dm_raid45 dm_message dm_region_hash dm_log dm_mod dm_mem_cache ata_piix libata sd_mod scsi_mod ext3 jbd uhci_hcd ohci_hcd ehci_hcd</div>
<div>Oct 14 16:24:49 localhost kernel: Pid: 2363, comm: ntpd Tainted: P      2.6.18-194.3.1.el5 #1</div><div>Oct 14 16:24:49 localhost kernel: RIP: 0010:[&lt;ffffffff80064b50&gt;]  [&lt;ffffffff80064b50&gt;] _spin_unlock_irqrestore+0x8/0x9</div>
<div>Oct 14 16:24:49 localhost kernel: RSP: 0018:ffffffff80446ee0  EFLAGS: 00000296</div><div>Oct 14 16:24:49 localhost kernel: RAX: 00000000000002fd RBX: ffff81007cb46b40 RCX: ffff81006975b978</div><div>Oct 14 16:24:49 localhost kernel: RDX: 0000000000000060 RSI: 0000000000000296 RDI: ffffffff80348e58</div>
<div>Oct 14 16:24:49 localhost kernel: RBP: ffffffff80446e60 R08: ffff81007cb46a70 R09: 0000000000000020</div><div>Oct 14 16:24:49 localhost kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8005dc8e</div><div>
Oct 14 16:24:49 localhost kernel: R13: 000000000000003d R14: ffffffff8007820e R15: ffffffff80446e60</div><div>Oct 14 16:24:49 localhost kernel: FS:  00002b3519a1c030(0000) GS:ffffffff803ca000(0000) knlGS:0000000000000000</div>
<div>Oct 14 16:25:06 localhost kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b</div><div>Oct 14 16:25:06 localhost kernel: CR2: 00002b4f3abac3d8 CR3: 0000000069726000 CR4: 00000000000006e0</div><div>Oct 14 16:25:06 localhost kernel:</div>
<div>Oct 14 16:25:06 localhost kernel: Call Trace:</div><div>Oct 14 16:25:06 localhost kernel:  &lt;IRQ&gt;  [&lt;ffffffff80209e43&gt;] i8042_interrupt+0x92/0x1e9</div><div>Oct 14 16:25:06 localhost kernel:  [&lt;ffffffff80010bd1&gt;] handle_IRQ_event+0x51/0xa6</div>
<div>Oct 14 16:25:07 localhost kernel:  [&lt;ffffffff800baec9&gt;] __do_IRQ+0xa4/0x103</div><div>Oct 14 16:25:07 localhost kernel:  [&lt;ffffffff8006ca11&gt;] do_IRQ+0xe7/0xf5</div><div>Oct 14 16:25:07 localhost kernel:  [&lt;ffffffff8005d615&gt;] ret_from_intr+0x0/0xa</div>
<div>Oct 14 16:25:07 localhost kernel:  &lt;EOI&gt;  [&lt;ffffffff8002f73b&gt;] dev_queue_xmit+0x0/0x271</div><div>Oct 14 16:25:07 localhost kernel:  [&lt;ffffffff881987c6&gt;] :8139cp:cp_start_xmit+0x4ef/0x511</div><div>
Oct 14 16:25:07 localhost kernel:  [&lt;ffffffff8819842d&gt;] :8139cp:cp_start_xmit+0x156/0x511</div><div>Oct 14 16:25:07 localhost kernel:  [&lt;ffffffff8022eede&gt;] dev_hard_start_xmit+0x1b7/0x28a</div><div>Oct 14 16:25:08 localhost kernel:  [&lt;ffffffff8023f0b8&gt;] __qdisc_run+0x136/0x1f9</div>
<div>Oct 14 16:25:08 localhost kernel:  [&lt;ffffffff8002f88b&gt;] dev_queue_xmit+0x150/0x271</div><div>Oct 14 16:25:08 localhost kernel:  [&lt;ffffffff80031f87&gt;] ip_output+0x2ae/0x2dd</div><div>Oct 14 16:25:08 localhost kernel:  [&lt;ffffffff8024d651&gt;] ip_push_pending_frames+0x37d/0x465</div>
<div>Oct 14 16:25:08 localhost kernel:  [&lt;ffffffff8025daad&gt;] udp_push_pending_frames+0x21e/0x243</div><div>Oct 14 16:25:08 localhost kernel:  [&lt;ffffffff8005297d&gt;] udp_sendmsg+0x4d8/0x5ef</div><div>Oct 14 16:25:08 localhost kernel:  [&lt;ffffffff80055336&gt;] sock_sendmsg+0xf8/0x14a</div>
<div>Oct 14 16:25:09 localhost kernel:  [&lt;ffffffff800a0abe&gt;] autoremove_wake_function+0x0/0x2e</div><div>Oct 14 16:25:09 localhost kernel:  [&lt;ffffffff80098f3b&gt;] __dequeue_signal+0x12d/0x193</div><div>Oct 14 16:25:09 localhost kernel:  [&lt;ffffffff8009899d&gt;] recalc_sigpending+0xe/0x25</div>
<div>Oct 14 16:25:09 localhost kernel:  [&lt;ffffffff8009a0db&gt;] dequeue_signal+0x47/0xcd</div><div>Oct 14 16:25:09 localhost kernel:  [&lt;ffffffff80070b89&gt;] init_fpu+0x62/0x7f</div><div>Oct 14 16:25:09 localhost kernel:  [&lt;ffffffff8006beee&gt;] math_state_restore+0x23/0x4c</div>
<div>Oct 14 16:25:09 localhost kernel:  [&lt;ffffffff8005dde9&gt;] error_exit+0x0/0x84</div><div>Oct 14 16:25:09 localhost kernel:  [&lt;ffffffff802264ac&gt;] sys_sendto+0x11c/0x14f</div><div>Oct 14 16:25:10 localhost kernel:  [&lt;ffffffff8006b011&gt;] __switch_to+0xfe/0x22f</div>
<div>Oct 14 16:25:10 localhost kernel:  [&lt;ffffffff80062ff8&gt;] thread_return+0x62/0xfe</div><div>Oct 14 16:25:10 localhost kernel:  [&lt;ffffffff80043b84&gt;] sys_rt_sigreturn+0x323/0x356</div><div>Oct 14 16:25:10 localhost kernel:  [&lt;ffffffff8005d28d&gt;] tracesys+0xd5/0xe0</div>
<div>Oct 14 16:25:10 localhost kernel:</div></div><div><br></div><div>Afterwhich the instance become very sluggish and unresponsive. Please advise what could be the issue.</div><div><br></div><div>Thanks</div><div><br></div>
<div>YongSan</div>