BUG: soft lockup - CPU#0 stuck for 61s
Hi,
I am running Debian 6.0 amd64 on a Dell PowerEdge 2850 server with 16 GB RAM for virtualization purposes using Debian's Xen packages. Today when I wanted to create a new VPS using xen-create-image I got really slow and everthing sort of freezed until it was finished. On the console I saw the error message which I copy pasted below.
Does anyone have an idea what's wrong here? Hardware looks ok so far... Is this maybe a bug or something?
Thanks in advance for any advices.
Regards,
ML
[930756.024114] BUG: soft lockup - CPU#0 stuck for 61s! [kblockd/0:22]
[930756.024114] Modules linked in: dm_snapshot nfs lockd fscache nfs_acl auth_rpcgss sunrpc xt_tcpudp nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack xt_physdev iptable_filter ip_tables x_tables ipmi_si mpt2sas scsi_transport_sas mptctl mptbase ipmi_devintf ipmi_msghandler dell_rbu xen_evtchn xenfs bridge stp bonding ext2 loop snd_pcm radeon snd_timer ttm drm_kms_helper snd drm joydev i2c_algo_bit psmouse soundcore i2c_core dcdbas snd_page_alloc serio_raw evdev pcspkr video output e752x_edac rng_core processor shpchp edac_core pci_hotplug button acpi_processor ext4 mbcache jbd2 crc16 dm_mod usbhid hid sd_mod sg sr_mod cdrom crc_t10dif ata_generic megaraid_mbox pata_sil680 uhci_hcd floppy ata_piix thermal thermal_sys megaraid_mm libata scsi_mod ehci_hcd e1000 usbcore nls_base [last unloaded: ipmi_si]
[930756.024114] CPU 0:
[930756.024114] Modules linked in: dm_snapshot nfs lockd fscache nfs_acl auth_rpcgss sunrpc xt_tcpudp nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack xt_physdev iptable_filter ip_tables x_tables ipmi_si mpt2sas scsi_transport_sas mptctl mptbase ipmi_devintf ipmi_msghandler dell_rbu xen_evtchn xenfs bridge stp bonding ext2 loop snd_pcm radeon snd_timer ttm drm_kms_helper snd drm joydev i2c_algo_bit psmouse soundcore i2c_core dcdbas snd_page_alloc serio_raw evdev pcspkr video output e752x_edac rng_core processor shpchp edac_core pci_hotplug button acpi_processor ext4 mbcache jbd2 crc16 dm_mod usbhid hid sd_mod sg sr_mod cdrom crc_t10dif ata_generic megaraid_mbox pata_sil680 uhci_hcd floppy ata_piix thermal thermal_sys megaraid_mm libata scsi_mod ehci_hcd e1000 usbcore nls_base [last unloaded: ipmi_si]
[930756.024114] Pid: 22, comm: kblockd/0 Not tainted 2.6.32-5-xen-amd64 #1 PowerEdge 2850
[930756.024114] RIP: e030:[<ffffffff8100922a>] [<ffffffff8100922a>] hypercall_page+0x22a/0x1001
[930756.024114] RSP: e02b:ffff88000350ecc8 EFLAGS: 00000246
[930756.024114] RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffffff8100922a
[930756.024114] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000000
[930756.024114] RBP: ffff880002f4e000 R08: ffff88003ebe0690 R09: ffffffff8118aed0
[930756.024114] R10: 0000000000000000 R11: 0000000000000246 R12: ffff88000243f800
[930756.024114] R13: ffff880002bdc000 R14: ffff88000243f848 R15: ffff8800024369c0
[930756.024114] FS: 00007fed4f83e700(0000) GS:ffff88000350b000(0000) knlGS:0000000000000000
[930756.024114] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b
[930756.024114] CR2: 0000000001ac31d0 CR3: 000000003e46d000 CR4: 0000000000000660
[930756.024114] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[930756.024114] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[930756.024114] Call Trace:
[930756.024114] <IRQ> [<ffffffff8100ecf2>] ? check_events+0x12/0x20
[930756.024114] [<ffffffff8100e635>] ? xen_force_evtchn_callback+0x9/0xa
[930756.024114] [<ffffffff8100ecf2>] ? check_events+0x12/0x20
[930756.024114] [<ffffffff8118aed0>] ? __cfq_slice_expired+0xc4/0xd4
[930756.024114] [<ffffffff8100ec99>] ? xen_irq_enable_direct_end+0x0/0x7
[930756.024114] [<ffffffffa006a2f0>] ? scsi_request_fn+0x41f/0x506 [scsi_mod]
[930756.024114] [<ffffffff8117ff72>] ? __blk_run_queue+0x35/0x66
[930756.024114] [<ffffffff81180047>] ? blk_run_queue+0x21/0x35
[930756.024114] [<ffffffffa0069881>] ? scsi_run_queue+0x2ce/0x36f [scsi_mod]
[930756.024114] [<ffffffffa006a5d0>] ? scsi_next_command+0x2d/0x39 [scsi_mod]
[930756.024114] [<ffffffffa006b0da>] ? scsi_io_completion+0x3d1/0x3fa [scsi_mod]
[930756.024114] [<ffffffff8130d55c>] ? _spin_lock_irqsave+0x15/0x34
[930756.024114] [<ffffffff811840ea>] ? blk_done_softirq+0x6e/0x7b
[930756.024114] [<ffffffff81054d1b>] ? __do_softirq+0xdd/0x1a6
[930756.024114] [<ffffffff81012cac>] ? call_softirq+0x1c/0x30
[930756.024114] [<ffffffff8101422b>] ? do_softirq+0x3f/0x7c
[930756.024114] [<ffffffff81054b8b>] ? irq_exit+0x36/0x76
[930756.024114] [<ffffffff811f28a5>] ? xen_evtchn_do_upcall+0x33/0x42
[930756.024114] [<ffffffff81012cfe>] ? xen_do_hypervisor_callback+0x1e/0x30
[930756.024114] <EOI> [<ffffffff8100922a>] ? hypercall_page+0x22a/0x1001
[930756.024114] [<ffffffff8100922a>] ? hypercall_page+0x22a/0x1001
[930756.024114] [<ffffffff8100ecf2>] ? check_events+0x12/0x20
[930756.024114] [<ffffffff8100e635>] ? xen_force_evtchn_callback+0x9/0xa
[930756.024114] [<ffffffff8100ecf2>] ? check_events+0x12/0x20
[930756.024114] [<ffffffff8100ec99>] ? xen_irq_enable_direct_end+0x0/0x7
[930756.024114] [<ffffffffa006a38f>] ? scsi_request_fn+0x4be/0x506 [scsi_mod]
[930756.024114] [<ffffffff8100ecf2>] ? check_events+0x12/0x20
[930756.024114] [<ffffffff811800f6>] ? generic_unplug_device+0x21/0x34
[930756.024114] [<ffffffff81062953>] ? worker_thread+0x188/0x21d
[930756.024114] [<ffffffff811783ca>] ? blk_unplug_work+0x0/0x44
[930756.024114] [<ffffffff81065f86>] ? autoremove_wake_function+0x0/0x2e
[930756.024114] [<ffffffff810627cb>] ? worker_thread+0x0/0x21d
[930756.024114] [<ffffffff81065cb9>] ? kthread+0x79/0x81
[930756.024114] [<ffffffff81012baa>] ? child_rip+0xa/0x20
[930756.024114] [<ffffffff81011d61>] ? int_ret_from_sys_call+0x7/0x1b
[930756.024114] [<ffffffff8101251d>] ? retint_restore_args+0x5/0x6
[930756.024114] [<ffffffff81012ba0>] ? child_rip+0x0/0x20
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