Date:	Wed, 7 Sep 2011 11:13:27 +0800
From:	Yong Zhang <yong.zhang0@...il.com>
To:	Anthony DeRobertis <aderobertis@...rics.net>
Cc:	Linux-kernel mailing list <linux-kernel@...r.kernel.org>
Subject: Re: Hard lockup in 3.0.3 with Oracle & mdraid check

On Tue, Sep 06, 2011 at 10:56:50AM -0400, Anthony DeRobertis wrote:
> [please CC me on replies; I'm not subscribed to linux-kernel]
> 
> This is a dual-Xeon E5649, 96GiB RAM, Linux 3.0.3 (+ debian patches, + 1
> local, see bottom of message) running Oracle 11gR2. Oracle is running
> with the data on raw devices, those devices being LVM logical volumes.
> There are several volume groups, each one having on PV. The PV is a
> mdraid RAID10. The underlying disks are 22 SAS, 2 SATA. Most of Oracle's
> IO is going to the SAS disks (the SATA ones are used for archive log).
> 
> This had been running fine for several days, until cron fired off a
> check of the raid partitions. Less than a minute after the Oracle ones
> started being checked, the machine died (md0 is /boot, 125 holds
> archive, 126 holds redo, 127 holds data + index)
> 
> The machine has ECC memory, and I have seen some corrected errors
> reported (but no uncorrected errors).
> 
> [290510.837380] md: data-check of RAID array md0
> [290510.841778] md: minimum _guaranteed_  speed: 1000 KB/sec/disk.
> [290510.847723] md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for data-check.
> [290510.857568] md: using 128k window, over a total of 123840k.
> [290510.858748] md: delaying data-check of md125 until md0 has finished (they share one or more physical units)
> [290510.879077] md: delaying data-check of md126 until md0 has finished (they share one or more physical units)
> [290510.879085] md: delaying data-check of md125 until md0 has finished (they share one or more physical units)
> [290510.899702] md: delaying data-check of md127 until md0 has finished (they share one or more physical units)
> [290573.795960] md: md0: data-check done.
> [290573.937561] md: data-check of RAID array md126
> [290573.937564] md: data-check of RAID array md125
> [290573.937567] md: minimum _guaranteed_  speed: 1000 KB/sec/disk.
> [290573.937568] md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for data-check.
> [290573.937577] md: using 128k window, over a total of 976635768k.
> [290573.937899] md: data-check of RAID array md127
> [290573.937912] md: minimum _guaranteed_  speed: 1000 KB/sec/disk.
> [290573.937914] md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for data-check.
> [290573.937949] md: using 128k window, over a total of 572485632k.
> [290573.994395] md: minimum _guaranteed_  speed: 1000 KB/sec/disk.
> [290574.000317] md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for data-check.
> [290574.010139] md: using 128k window, over a total of 143121408k.
> [290624.606210] ------------[ cut here ]------------
> [290624.610918] WARNING: at /home/anthony-ldap/linux/linux-2.6-3.0.0/debian/build/source_amd64_none/kernel/watchdog.c:240 watchdog_overflow_callback+0x96/0xa1()
> [290624.624974] Hardware name: X8DT6
> [290624.628282] Watchdog detected hard LOCKUP on cpu 0
> [290624.632978] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290624.672916] Pid: 3944, comm: oracle Not tainted 3.0.0-1-amd64 #1
> [290624.679004] Call Trace:
> [290624.681535]  <NMI>  [<ffffffff810462a8>] ? warn_slowpath_common+0x78/0x8c
> [290624.688422]  [<ffffffff8104635a>] ? warn_slowpath_fmt+0x45/0x4a
> [290624.694426]  [<ffffffff81091f72>] ? watchdog_overflow_callback+0x96/0xa1
> [290624.701209]  [<ffffffff810b30be>] ? __perf_event_overflow+0x101/0x198
> [290624.707734]  [<ffffffff810150ec>] ? intel_pmu_enable_all+0x9d/0x144
> [290624.714082]  [<ffffffff81018045>] ? intel_pmu_handle_irq+0x40e/0x481
> [290624.720521]  [<ffffffff8133a2d4>] ? perf_event_nmi_handler+0x39/0x82
> [290624.726954]  [<ffffffff8133bf09>] ? notifier_call_chain+0x2e/0x5b
> [290624.733123]  [<ffffffff8133bf80>] ? notify_die+0x2d/0x32
> [290624.738518]  [<ffffffff81339b11>] ? do_nmi+0x63/0x206
> [290624.743647]  [<ffffffff813395d0>] ? nmi+0x20/0x30
> [290624.748430]  [<ffffffff810429f0>] ? try_to_wake_up+0x73/0x18c

It should be fixed in current kernel.

tglx just sent an pull reqeust(scheduler fixes) in which
blk_schedule_flush_plug() is separated from schedule()

Thanks,
Yong

> [290624.754259]  <<EOE>>  <IRQ>  [<ffffffff810354a4>] ? __wake_up_common+0x41/0x78
> [290624.761598]  [<ffffffff8103a939>] ? __wake_up+0x35/0x46
> [290624.766909]  [<ffffffffa009ad46>] ? raid_end_bio_io+0x30/0x76 [raid10]
> [290624.773519]  [<ffffffffa009d4f7>] ? raid10_end_write_request+0xdc/0xbe5 [raid10]
> [290624.780995]  [<ffffffff811b7c9f>] ? is_swiotlb_buffer+0x26/0x31
> [290624.786998]  [<ffffffff81192cb9>] ? blk_update_request+0x1a6/0x35d
> [290624.793261]  [<ffffffff81192e81>] ? blk_update_bidi_request+0x11/0x5b
> [290624.799782]  [<ffffffff81192fb5>] ? blk_end_bidi_request+0x19/0x55
> [290624.806043]  [<ffffffffa0008425>] ? scsi_io_completion+0x1d0/0x48e [scsi_mod]
> [290624.813257]  [<ffffffffa0042d4c>] ? mpt2sas_base_free_smid+0x118/0x20e [mpt2sas]
> [290624.820731]  [<ffffffff81197303>] ? blk_done_softirq+0x6b/0x78
> [290624.826647]  [<ffffffff8104baef>] ? __do_softirq+0xc4/0x1a0
> [290624.832304]  [<ffffffff81092bbe>] ? handle_irq_event_percpu+0x166/0x184
> [290624.839001]  [<ffffffff8133f49c>] ? call_softirq+0x1c/0x30
> [290624.844571]  [<ffffffff8100aa33>] ? do_softirq+0x3f/0x79
> [290624.849966]  [<ffffffff8104b8bf>] ? irq_exit+0x44/0xb5
> [290624.855183]  [<ffffffff8100a37e>] ? do_IRQ+0x94/0xaa
> [290624.860232]  [<ffffffff81339053>] ? common_interrupt+0x13/0x13
> [290624.866140]  <EOI>  [<ffffffffa0007871>] ? scsi_request_fn+0x468/0x49d [scsi_mod]
> [290624.873723]  [<ffffffffa000759a>] ? scsi_request_fn+0x191/0x49d [scsi_mod]
> [290624.880679]  [<ffffffff81192aac>] ? blk_flush_plug_list+0x194/0x1d1
> [290624.887030]  [<ffffffff813374b8>] ? schedule+0x243/0x61a
> [290624.892425]  [<ffffffffa009b18f>] ? wait_barrier+0x8e/0xc7 [raid10]
> [290624.898774]  [<ffffffff81042b09>] ? try_to_wake_up+0x18c/0x18c
> [290624.904691]  [<ffffffffa009d09b>] ? make_request+0x17b/0x4fb [raid10]
> [290624.911214]  [<ffffffff81196e15>] ? ll_new_hw_segment+0x1b/0x7e
> [290624.917221]  [<ffffffffa0087f16>] ? md_make_request+0xc6/0x1c1 [md_mod]
> [290624.923913]  [<ffffffff81193f06>] ? generic_make_request+0x2cb/0x341
> [290624.930345]  [<ffffffffa00ac8c0>] ? dm_get_live_table+0x35/0x3d [dm_mod]
> [290624.937124]  [<ffffffff81194056>] ? submit_bio+0xda/0xf8
> [290624.942516]  [<ffffffff810be05c>] ? set_page_dirty_lock+0x21/0x29
> [290624.948691]  [<ffffffff81125123>] ? dio_bio_submit+0x6c/0x8a
> [290624.954433]  [<ffffffff811251af>] ? dio_send_cur_page+0x6e/0x93
> [290624.960427]  [<ffffffff81125289>] ? submit_page_section+0xb5/0x135
> [290624.966683]  [<ffffffff81125abe>] ? __blockdev_direct_IO+0x670/0x8ed
> [290624.973123]  [<ffffffffa0008fe3>] ? scsi_dma_map+0x7a/0x93 [scsi_mod]
> [290624.979643]  [<ffffffff81123d8f>] ? blkdev_direct_IO+0x4e/0x53
> [290624.985559]  [<ffffffff81123237>] ? blkdev_get_block+0x5b/0x5b
> [290624.991478]  [<ffffffff810b74c6>] ? generic_file_aio_read+0xed/0x5c3
> [290624.997914]  [<ffffffff810ed40c>] ? virt_to_slab+0x9/0x3c
> [290625.003396]  [<ffffffff810b73d9>] ? lock_page_killable+0x2c/0x2c
> [290625.009480]  [<ffffffff8112df7c>] ? aio_rw_vect_retry+0x7d/0x180
> [290625.015567]  [<ffffffff8112efe5>] ? aio_run_iocb+0x6b/0x132
> [290625.021215]  [<ffffffff8112f606>] ? do_io_submit+0x419/0x4c8
> [290625.026951]  [<ffffffff8133e292>] ? system_call_fastpath+0x16/0x1b
> [290625.033212] ---[ end trace 3a6a21008417f262 ]---
> [290668.827271] INFO: rcu_sched_state detected stalls on CPUs/tasks: { 0} (detected by 16, t=15002 jiffies)
> [290668.836776] sending NMI to all CPUs:
> [290668.840433] NMI backtrace for cpu 0
> [290668.844009] CPU 0 
> [290668.845933] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290668.885867] 
> [290668.887446] Pid: 3944, comm: oracle Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290668.896531] RIP: 0010:[<ffffffff810429f0>]  [<ffffffff810429f0>] try_to_wake_up+0x73/0x18c
> [290668.904892] RSP: 0018:ffff880c3fc03c80  EFLAGS: 00000002
> [290668.910281] RAX: 0000000000000002 RBX: ffff880c0c291610 RCX: 000000000000e7d8
> [290668.917496] RDX: 0000000000000046 RSI: 0000000000000003 RDI: ffff880c0c291b20
> [290668.924705] RBP: ffff880c0c291b20 R08: ffff8800bb0f5800 R09: ffff8800727ac6c0
> [290668.931921] R10: 0000000000000046 R11: ffff880c0ce55000 R12: 0000000000000000
> [290668.939137] R13: 0000000000000046 R14: 0000000000000003 R15: 0000000000000000
> [290668.946354] FS:  00007f1410850700(0000) GS:ffff880c3fc00000(0000) knlGS:0000000000000000
> [290668.954521] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290668.960343] CR2: 0000000008777c6c CR3: 000000180d69a000 CR4: 00000000000006f0
> [290668.967552] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290668.974768] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290668.981984] Process oracle (pid: 3944, threadinfo ffff88180cbe8000, task ffff880c0c291610)
> [290668.990326] Stack:
> [290668.992422]  ffffea002fcfab50 0000000000000001 0000000000000003 ffff8800b145fbc0
> [290668.999958]  0000000000000000 0000000000000000 ffff880c0f3f8e18 ffffffff810354a4
> [290669.007494]  ffff880c0ce55000 0000000000000000 0000000000000003 ffff880c0f3f8e10
> [290669.015031] Call Trace:
> [290669.017562]  <IRQ> 
> [290669.019764]  [<ffffffff810354a4>] ? __wake_up_common+0x41/0x78
> [290669.025679]  [<ffffffff8103a939>] ? __wake_up+0x35/0x46
> [290669.030984]  [<ffffffffa009ad46>] ? raid_end_bio_io+0x30/0x76 [raid10]
> [290669.037594]  [<ffffffffa009d4f7>] ? raid10_end_write_request+0xdc/0xbe5 [raid10]
> [290669.045067]  [<ffffffff811b7c9f>] ? is_swiotlb_buffer+0x26/0x31
> [290669.051070]  [<ffffffff81192cb9>] ? blk_update_request+0x1a6/0x35d
> [290669.057335]  [<ffffffff81192e81>] ? blk_update_bidi_request+0x11/0x5b
> [290669.063857]  [<ffffffff81192fb5>] ? blk_end_bidi_request+0x19/0x55
> [290669.070124]  [<ffffffffa0008425>] ? scsi_io_completion+0x1d0/0x48e [scsi_mod]
> [290669.077340]  [<ffffffffa0042d4c>] ? mpt2sas_base_free_smid+0x118/0x20e [mpt2sas]
> [290669.084815]  [<ffffffff81197303>] ? blk_done_softirq+0x6b/0x78
> [290669.090730]  [<ffffffff8104baef>] ? __do_softirq+0xc4/0x1a0
> [290669.096388]  [<ffffffff81092bbe>] ? handle_irq_event_percpu+0x166/0x184
> [290669.103083]  [<ffffffff8133f49c>] ? call_softirq+0x1c/0x30
> [290669.108654]  [<ffffffff8100aa33>] ? do_softirq+0x3f/0x79
> [290669.114050]  [<ffffffff8104b8bf>] ? irq_exit+0x44/0xb5
> [290669.119273]  [<ffffffff8100a37e>] ? do_IRQ+0x94/0xaa
> [290669.124325]  [<ffffffff81339053>] ? common_interrupt+0x13/0x13
> [290669.130240]  <EOI> 
> [290669.132452]  [<ffffffffa0007871>] ? scsi_request_fn+0x468/0x49d [scsi_mod]
> [290669.139410]  [<ffffffffa000759a>] ? scsi_request_fn+0x191/0x49d [scsi_mod]
> [290669.146363]  [<ffffffff81192aac>] ? blk_flush_plug_list+0x194/0x1d1
> [290669.152714]  [<ffffffff813374b8>] ? schedule+0x243/0x61a
> [290669.158110]  [<ffffffffa009b18f>] ? wait_barrier+0x8e/0xc7 [raid10]
> [290669.164459]  [<ffffffff81042b09>] ? try_to_wake_up+0x18c/0x18c
> [290669.170377]  [<ffffffffa009d09b>] ? make_request+0x17b/0x4fb [raid10]
> [290669.176899]  [<ffffffff81196e15>] ? ll_new_hw_segment+0x1b/0x7e
> [290669.182904]  [<ffffffffa0087f16>] ? md_make_request+0xc6/0x1c1 [md_mod]
> [290669.189600]  [<ffffffff81193f06>] ? generic_make_request+0x2cb/0x341
> [290669.196039]  [<ffffffffa00ac8c0>] ? dm_get_live_table+0x35/0x3d [dm_mod]
> [290669.202818]  [<ffffffff81194056>] ? submit_bio+0xda/0xf8
> [290669.208215]  [<ffffffff810be05c>] ? set_page_dirty_lock+0x21/0x29
> [290669.214392]  [<ffffffff81125123>] ? dio_bio_submit+0x6c/0x8a
> [290669.220135]  [<ffffffff811251af>] ? dio_send_cur_page+0x6e/0x93
> [290669.226129]  [<ffffffff81125289>] ? submit_page_section+0xb5/0x135
> [290669.232385]  [<ffffffff81125abe>] ? __blockdev_direct_IO+0x670/0x8ed
> [290669.238825]  [<ffffffffa0008fe3>] ? scsi_dma_map+0x7a/0x93 [scsi_mod]
> [290669.245347]  [<ffffffff81123d8f>] ? blkdev_direct_IO+0x4e/0x53
> [290669.251263]  [<ffffffff81123237>] ? blkdev_get_block+0x5b/0x5b
> [290669.257181]  [<ffffffff810b74c6>] ? generic_file_aio_read+0xed/0x5c3
> [290669.263615]  [<ffffffff810ed40c>] ? virt_to_slab+0x9/0x3c
> [290669.269099]  [<ffffffff810b73d9>] ? lock_page_killable+0x2c/0x2c
> [290669.275189]  [<ffffffff8112df7c>] ? aio_rw_vect_retry+0x7d/0x180
> [290669.281279]  [<ffffffff8112efe5>] ? aio_run_iocb+0x6b/0x132
> [290669.286935]  [<ffffffff8112f606>] ? do_io_submit+0x419/0x4c8
> [290669.292679]  [<ffffffff8133e292>] ? system_call_fastpath+0x16/0x1b
> [290669.298941] Code: c6 31 c0 83 7b 2c 00 74 13 44 89 e2 48 89 de 4c 89 f7 e8 f8 e5 ff ff b8 01 00 00 00 66 41 ff 06 85 c0 74 07 e9 fb 00 00 00 f3 90 
> [290669.312783]  7b 28 00 75 f8 48 8b 13 31 c0 80 e2 02 74 0c 8b 43 14 c1 e8 
> [290669.320198] Call Trace:
> [290669.322730]  <IRQ>  [<ffffffff810354a4>] ? __wake_up_common+0x41/0x78
> [290669.329263]  [<ffffffff8103a939>] ? __wake_up+0x35/0x46
> [290669.334573]  [<ffffffffa009ad46>] ? raid_end_bio_io+0x30/0x76 [raid10]
> [290669.341183]  [<ffffffffa009d4f7>] ? raid10_end_write_request+0xdc/0xbe5 [raid10]
> [290669.348660]  [<ffffffff811b7c9f>] ? is_swiotlb_buffer+0x26/0x31
> [290669.354661]  [<ffffffff81192cb9>] ? blk_update_request+0x1a6/0x35d
> [290669.360926]  [<ffffffff81192e81>] ? blk_update_bidi_request+0x11/0x5b
> [290669.367447]  [<ffffffff81192fb5>] ? blk_end_bidi_request+0x19/0x55
> [290669.373706]  [<ffffffffa0008425>] ? scsi_io_completion+0x1d0/0x48e [scsi_mod]
> [290669.380922]  [<ffffffffa0042d4c>] ? mpt2sas_base_free_smid+0x118/0x20e [mpt2sas]
> [290669.388396]  [<ffffffff81197303>] ? blk_done_softirq+0x6b/0x78
> [290669.394312]  [<ffffffff8104baef>] ? __do_softirq+0xc4/0x1a0
> [290669.399970]  [<ffffffff81092bbe>] ? handle_irq_event_percpu+0x166/0x184
> [290669.406666]  [<ffffffff8133f49c>] ? call_softirq+0x1c/0x30
> [290669.412235]  [<ffffffff8100aa33>] ? do_softirq+0x3f/0x79
> [290669.417625]  [<ffffffff8104b8bf>] ? irq_exit+0x44/0xb5
> [290669.422847]  [<ffffffff8100a37e>] ? do_IRQ+0x94/0xaa
> [290669.427897]  [<ffffffff81339053>] ? common_interrupt+0x13/0x13
> [290669.433813]  <EOI>  [<ffffffffa0007871>] ? scsi_request_fn+0x468/0x49d [scsi_mod]
> [290669.441399]  [<ffffffffa000759a>] ? scsi_request_fn+0x191/0x49d [scsi_mod]
> [290669.448351]  [<ffffffff81192aac>] ? blk_flush_plug_list+0x194/0x1d1
> [290669.454702]  [<ffffffff813374b8>] ? schedule+0x243/0x61a
> [290669.460099]  [<ffffffffa009b18f>] ? wait_barrier+0x8e/0xc7 [raid10]
> [290669.466447]  [<ffffffff81042b09>] ? try_to_wake_up+0x18c/0x18c
> [290669.472365]  [<ffffffffa009d09b>] ? make_request+0x17b/0x4fb [raid10]
> [290669.478887]  [<ffffffff81196e15>] ? ll_new_hw_segment+0x1b/0x7e
> [290669.484893]  [<ffffffffa0087f16>] ? md_make_request+0xc6/0x1c1 [md_mod]
> [290669.491587]  [<ffffffff81193f06>] ? generic_make_request+0x2cb/0x341
> [290669.498017]  [<ffffffffa00ac8c0>] ? dm_get_live_table+0x35/0x3d [dm_mod]
> [290669.504798]  [<ffffffff81194056>] ? submit_bio+0xda/0xf8
> [290669.510195]  [<ffffffff810be05c>] ? set_page_dirty_lock+0x21/0x29
> [290669.516373]  [<ffffffff81125123>] ? dio_bio_submit+0x6c/0x8a
> [290669.522114]  [<ffffffff811251af>] ? dio_send_cur_page+0x6e/0x93
> [290669.528109]  [<ffffffff81125289>] ? submit_page_section+0xb5/0x135
> [290669.534366]  [<ffffffff81125abe>] ? __blockdev_direct_IO+0x670/0x8ed
> [290669.540805]  [<ffffffffa0008fe3>] ? scsi_dma_map+0x7a/0x93 [scsi_mod]
> [290669.547326]  [<ffffffff81123d8f>] ? blkdev_direct_IO+0x4e/0x53
> [290669.553241]  [<ffffffff81123237>] ? blkdev_get_block+0x5b/0x5b
> [290669.559159]  [<ffffffff810b74c6>] ? generic_file_aio_read+0xed/0x5c3
> [290669.565595]  [<ffffffff810ed40c>] ? virt_to_slab+0x9/0x3c
> [290669.571078]  [<ffffffff810b73d9>] ? lock_page_killable+0x2c/0x2c
> [290669.577169]  [<ffffffff8112df7c>] ? aio_rw_vect_retry+0x7d/0x180
> [290669.583258]  [<ffffffff8112efe5>] ? aio_run_iocb+0x6b/0x132
> [290669.588916]  [<ffffffff8112f606>] ? do_io_submit+0x419/0x4c8
> [290669.594660]  [<ffffffff8133e292>] ? system_call_fastpath+0x16/0x1b
> [290669.600921] NMI backtrace for cpu 1
> [290669.604499] CPU 1 
> [290669.606429] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290669.646365] 
> [290669.647943] Pid: 0, comm: kworker/0:0 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290669.657194] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290669.666073] RSP: 0018:ffff880c0f253e80  EFLAGS: 00000046
> [290669.671462] RAX: 0000000000000020 RBX: ffff88180a8e4508 RCX: 0000000000000001
> [290669.678670] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290669.685877] RBP: ffff88180a8e4000 R08: ffff880c0f253fd8 R09: 0000000100000000
> [290669.693086] R10: 0000000000012840 R11: ffff88180a8e4000 R12: 124037bde4851831
> [290669.700300] R13: 0000000000000003 R14: 0000000000000180 R15: 0000000000000001
> [290669.707510] FS:  0000000000000000(0000) GS:ffff880c3fc20000(0000) knlGS:0000000000000000
> [290669.715677] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290669.721500] CR2: 00007f0d7034ae18 CR3: 0000000001603000 CR4: 00000000000006e0
> [290669.728715] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290669.735923] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290669.743131] Process kworker/0:0 (pid: 0, threadinfo ffff880c0f252000, task ffff880c0f2240c0)
> [290669.751645] Stack:
> [290669.753742]  ffffffffa026a018 0000000000000000 00000000003baff0 0001087a1a028c7d
> [290669.761279]  ffff88180a8e4020 ffff88180a8e4150 0000000000000000 0000000000000003
> [290669.768816]  ffffffff812665c3 ffffffff8172de28 ffff880c0f252010 ffffffff81684cc0
> [290669.776352] Call Trace:
> [290669.778886]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290669.786189]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290669.792363]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290669.797587]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290669.804370]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290669.810372] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290669.830401] Call Trace:
> [290669.832933]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290669.840235]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290669.846410]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290669.851626]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290669.858408]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290669.864405] NMI backtrace for cpu 2
> [290669.867981] CPU 2 
> [290669.869903] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290669.909840] 
> [290669.911416] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290669.920677] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290669.929565] RSP: 0018:ffff880c0f26be80  EFLAGS: 00000046
> [290669.934953] RAX: 0000000000000010 RBX: ffff88180c84ccb8 RCX: 0000000000000001
> [290669.942162] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000010
> [290669.949378] RBP: ffff88180c84c800 R08: ffff880c0f26bfd8 R09: 0000000100000000
> [290669.956593] R10: ffffffff8100e36a R11: ffff88180c84c800 R12: 124037bd33bb3aaa
> [290669.963799] R13: 0000000000000002 R14: 0000000000000120 R15: 0000000000000002
> [290669.971007] FS:  0000000000000000(0000) GS:ffff880c3fc40000(0000) knlGS:0000000000000000
> [290669.979168] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290669.984990] CR2: 00007fb3345cc610 CR3: 0000000001603000 CR4: 00000000000006e0
> [290669.992207] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290669.999422] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290670.006631] Process kworker/0:1 (pid: 0, threadinfo ffff880c0f26a000, task ffff880c0f269610)
> [290670.015144] Stack:
> [290670.017240]  ffffffffa026a018 0000000000000003 000000003b5d127b 0000000104542405
> [290670.024778]  ffff88180c84c820 ffff88180c84c8f0 0000000000000000 0000000000000002
> [290670.032314]  ffffffff812665c3 0000000000000000 ffff880c0f26a010 ffffffff81684cc0
> [290670.039851] Call Trace:
> [290670.042385]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290670.049687]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290670.055863]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290670.061088]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290670.067869]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290670.073870] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290670.093900] Call Trace:
> [290670.096432]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290670.103733]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290670.109910]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290670.115135]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290670.121917]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290670.127921] NMI backtrace for cpu 3
> [290670.131495] CPU 3 
> [290670.133420] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290670.173355] 
> [290670.174933] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290670.184193] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290670.193073] RSP: 0018:ffff880c0f27fe80  EFLAGS: 00000046
> [290670.198461] RAX: 0000000000000020 RBX: ffff88180c84c508 RCX: 0000000000000001
> [290670.205677] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290670.212894] RBP: ffff88180c84c000 R08: ffff880c0f27ffd8 R09: 0000000100000000
> [290670.220109] R10: 0000000000012840 R11: ffff88180c84c000 R12: 124037bde474fab8
> [290670.227317] R13: 0000000000000003 R14: 0000000000000180 R15: 0000000000000003
> [290670.234525] FS:  0000000000000000(0000) GS:ffff880c3fc60000(0000) knlGS:0000000000000000
> [290670.242694] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290670.248525] CR2: 00007f18ca2bc000 CR3: 0000000001603000 CR4: 00000000000006e0
> [290670.255739] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290670.262947] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290670.270155] Process kworker/0:1 (pid: 0, threadinfo ffff880c0f27e000, task ffff880c0f276f60)
> [290670.278670] Stack:
> [290670.280767]  ffffffffa026a018 0000000000000000 00000000003bad25 0001087a1b338a21
> [290670.288304]  ffff88180c84c020 ffff88180c84c150 0000000000000000 0000000000000003
> [290670.295839]  ffffffff812665c3 0000000000000000 ffff880c0f27e010 ffffffff81684cc0
> [290670.303377] Call Trace:
> [290670.305910]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290670.313211]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290670.319387]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290670.324610]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290670.330613] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290670.350642] Call Trace:
> [290670.353175]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290670.360477]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290670.366652]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290670.371875]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290670.377870] NMI backtrace for cpu 4
> [290670.381447] CPU 4 
> [290670.383370] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290670.423305] 
> [290670.424883] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290670.434143] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290670.443023] RSP: 0018:ffff880c0f2b3e80  EFLAGS: 00000046
> [290670.448411] RAX: 0000000000000020 RBX: ffff88180bec8d08 RCX: 0000000000000001
> [290670.455619] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290670.462834] RBP: ffff88180bec8800 R08: ffff880c0f2b3fd8 R09: 0000000100000000
> [290670.470060] R10: ffffffff8100e36a R11: ffff88180bec8800 R12: 124037bde3bd8e07
> [290670.477276] R13: 0000000000000003 R14: 0000000000000180 R15: 0000000000000004
> [290670.484493] FS:  0000000000000000(0000) GS:ffff880c3fc80000(0000) knlGS:0000000000000000
> [290670.492661] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290670.498484] CR2: 00007fe089319000 CR3: 0000000001603000 CR4: 00000000000006e0
> [290670.505699] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290670.512906] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290670.520114] Process kworker/0:1 (pid: 0, threadinfo ffff880c0f2b2000, task ffff880c0f2888b0)
> [290670.528630] Stack:
> [290670.530726]  ffffffffa026a018 0000000000000003 000000000dd2ea63 0000000104542437
> [290670.538263]  ffff88180bec8820 ffff88180bec8950 0000000000000000 0000000000000003
> [290670.545798]  ffffffff812665c3 0000000000000000 ffff880c0f2b2010 ffffffff81684cc0
> [290670.553335] Call Trace:
> [290670.555870]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290670.563171]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290670.569348]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290670.574572]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290670.581352]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290670.587346] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290670.607383] Call Trace:
> [290670.609917]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290670.617218]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290670.623394]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290670.628618]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290670.635401]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290670.641404] NMI backtrace for cpu 5
> [290670.644981] CPU 5 
> [290670.646903] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290670.686839] 
> [290670.688417] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290670.697667] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290670.706540] RSP: 0018:ffff880c0f2c7e80  EFLAGS: 00000046
> [290670.711927] RAX: 0000000000000020 RBX: ffff88180cbd4d08 RCX: 0000000000000001
> [290670.719136] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290670.726343] RBP: ffff88180cbd4800 R08: ffff880c0f2c7fd8 R09: 0000000100000000
> [290670.733549] R10: 0000000000012840 R11: ffff88180cbd4800 R12: 124037bde474d42e
> [290670.740758] R13: 0000000000000003 R14: 0000000000000180 R15: 0000000000000005
> [290670.747965] FS:  0000000000000000(0000) GS:ffff880c3fca0000(0000) knlGS:0000000000000000
> [290670.756125] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290670.761948] CR2: 00007f18d94dc000 CR3: 0000000001603000 CR4: 00000000000006e0
> [290670.769154] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290670.776362] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290670.783570] Process kworker/0:1 (pid: 0, threadinfo ffff880c0f2c6000, task ffff880c0f2b6200)
> [290670.792076] Stack:
> [290670.794173]  ffffffffa026a018 0000000000000000 00000000003bb3ae 00010879ee23d543
> [290670.801710]  ffff88180cbd4820 ffff88180cbd4950 0000000000000000 0000000000000003
> [290670.809246]  ffffffff812665c3 0000000000000000 ffff880c0f2c6010 ffffffff81684cc0
> [290670.816783] Call Trace:
> [290670.819317]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290670.826617]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290670.832794]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290670.838018]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290670.844799]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290670.850794] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290670.870822] Call Trace:
> [290670.873353]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290670.880656]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290670.886833]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290670.892057]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290670.898838]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290670.904834] NMI backtrace for cpu 6
> [290670.908412] CPU 6 
> [290670.910341] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290670.950279] 
> [290670.951855] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290670.961107] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290670.969986] RSP: 0018:ffff880c0f2d3e80  EFLAGS: 00000046
> [290670.975376] RAX: 0000000000000020 RBX: ffff88180ef13508 RCX: 0000000000000001
> [290670.982590] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290670.989799] RBP: ffff88180ef13000 R08: ffff880c0f2d3fd8 R09: 0000000100000000
> [290670.997006] R10: 0000000000012840 R11: ffff88180ef13000 R12: 124037bde47501a5
> [290671.004213] R13: 0000000000000003 R14: 0000000000000180 R15: 0000000000000006
> [290671.011421] FS:  0000000000000000(0000) GS:ffff88183fc00000(0000) knlGS:0000000000000000
> [290671.019581] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290671.025402] CR2: 00000000086bd08e CR3: 0000000001603000 CR4: 00000000000006e0
> [290671.032609] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290671.039817] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290671.047025] Process kworker/0:1 (pid: 0, threadinfo ffff880c0f2d2000, task ffff880c0f2cb020)
> [290671.055531] Stack:
> [290671.057629]  ffffffffa026a018 0000000000000000 00000000003baac2 0001087a05fbb842
> [290671.065166]  ffff88180ef13020 ffff88180ef13150 0000000000000000 0000000000000003
> [290671.072703]  ffffffff812665c3 0000000000000000 ffff880c0f2d2010 ffffffff81684cc0
> [290671.080239] Call Trace:
> [290671.082772]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290671.090075]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290671.096249]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290671.101475]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290671.107475] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290671.127503] Call Trace:
> [290671.130037]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290671.137337]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290671.143504]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290671.148719]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290671.154716] NMI backtrace for cpu 7
> [290671.158292] CPU 7 
> [290671.160214] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290671.200150] 
> [290671.201728] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290671.210979] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290671.219850] RSP: 0018:ffff880c0f2fbe80  EFLAGS: 00000046
> [290671.225239] RAX: 0000000000000020 RBX: ffff88180ef11d08 RCX: 0000000000000001
> [290671.232454] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290671.239662] RBP: ffff88180ef11800 R08: ffff880c0f2fbfd8 R09: 0000000100000000
> [290671.246869] R10: 0000000000012840 R11: ffff88180ef11800 R12: 124037bde474d7cd
> [290671.254077] R13: 0000000000000003 R14: 0000000000000180 R15: 0000000000000007
> [290671.261285] FS:  0000000000000000(0000) GS:ffff88183fc20000(0000) knlGS:0000000000000000
> [290671.269445] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290671.275266] CR2: 00007fb6ac851000 CR3: 0000000001603000 CR4: 00000000000006e0
> [290671.282475] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290671.289681] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290671.296888] Process kworker/0:1 (pid: 0, threadinfo ffff880c0f2fa000, task ffff880c0f2ca240)
> [290671.305395] Stack:
> [290671.307493]  ffffffffa026a018 0000000000000000 00000000003bb5b2 00010879ecf2fcd1
> [290671.315029]  ffff88180ef11820 ffff88180ef11950 0000000000000000 0000000000000003
> [290671.322565]  ffffffff812665c3 0000000000000000 ffff880c0f2fa010 ffffffff81684cc0
> [290671.330108] Call Trace:
> [290671.332644]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290671.339946]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290671.346122]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290671.351346]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290671.357348] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290671.377383] Call Trace:
> [290671.379916]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290671.387218]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290671.393386]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290671.398601]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290671.404597] NMI backtrace for cpu 8
> [290671.408172] CPU 8 
> [290671.410096] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290671.450031] 
> [290671.451608] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290671.460861] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290671.469739] RSP: 0018:ffff880c0f305e80  EFLAGS: 00000046
> [290671.475127] RAX: 0000000000000020 RBX: ffff88180ef11508 RCX: 0000000000000001
> [290671.482336] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290671.489543] RBP: ffff88180ef11000 R08: ffff880c0f305fd8 R09: 0000000100000000
> [290671.496752] R10: 0000000000012840 R11: ffff88180ef11000 R12: 124037bde474f84f
> [290671.503966] R13: 0000000000000003 R14: 0000000000000180 R15: 0000000000000008
> [290671.511174] FS:  0000000000000000(0000) GS:ffff88183fc40000(0000) knlGS:0000000000000000
> [290671.519334] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290671.525156] CR2: 00000000013eaee2 CR3: 0000000001603000 CR4: 00000000000006e0
> [290671.532363] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290671.539572] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290671.546780] Process kworker/0:1 (pid: 0, threadinfo ffff880c0f304000, task ffff880c0f2fd060)
> [290671.555294] Stack:
> [290671.557392]  ffffffffa026a018 0000000000000000 00000000003bb0aa 0001087a0581b023
> [290671.564927]  ffff88180ef11020 ffff88180ef11150 0000000000000000 0000000000000003
> [290671.572464]  ffffffff812665c3 0000000000000000 ffff880c0f304010 ffffffff81684cc0
> [290671.580001] Call Trace:
> [290671.582535]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290671.589836]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290671.596012]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290671.601234]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290671.607228] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290671.627258] Call Trace:
> [290671.629789]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290671.637092]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290671.643267]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290671.648483]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290671.654487] NMI backtrace for cpu 9
> [290671.658063] CPU 9 
> [290671.659984] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290671.699920] 
> [290671.701498] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290671.710751] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290671.719629] RSP: 0018:ffff880c0f30fe80  EFLAGS: 00000046
> [290671.725019] RAX: 0000000000000020 RBX: ffff88180ef06d08 RCX: 0000000000000001
> [290671.732235] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290671.739441] RBP: ffff88180ef06800 R08: ffff880c0f30ffd8 R09: 0000000100000000
> [290671.746649] R10: 0000000000012840 R11: ffff88180ef06800 R12: 124037bde474fe8f
> [290671.753855] R13: 0000000000000003 R14: 0000000000000180 R15: 0000000000000009
> [290671.761065] FS:  0000000000000000(0000) GS:ffff88183fc60000(0000) knlGS:0000000000000000
> [290671.769224] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290671.775046] CR2: 00000000014b4be4 CR3: 0000000001603000 CR4: 00000000000006e0
> [290671.782253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290671.789461] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290671.796669] Process kworker/0:1 (pid: 0, threadinfo ffff880c0f30e000, task ffff880c0f2fc280)
> [290671.805175] Stack:
> [290671.807273]  ffffffffa026a018 0000000000000000 00000000003bae7f 0001087a05fbf553
> [290671.814808]  ffff88180ef06820 ffff88180ef06950 0000000000000000 0000000000000003
> [290671.822344]  ffffffff812665c3 0000000000000000 ffff880c0f30e010 ffffffff81684cc0
> [290671.829882] Call Trace:
> [290671.832415]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290671.839715]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290671.845892]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290671.851107]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290671.857101] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290671.877129] Call Trace:
> [290671.879662]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290671.886964]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290671.893139]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290671.898353]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290671.904350] NMI backtrace for cpu 10
> [290671.908013] CPU 10 
> [290671.910021] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290671.949958] 
> [290671.951537] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290671.960796] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290671.969676] RSP: 0018:ffff880c0f319e80  EFLAGS: 00000046
> [290671.975073] RAX: 0000000000000020 RBX: ffff88180ef06508 RCX: 0000000000000001
> [290671.982280] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290671.989488] RBP: ffff88180ef06000 R08: ffff880c0f319fd8 R09: 0000000100000000
> [290671.996695] R10: ffffffff8100e36a R11: ffff88180ef06000 R12: 124037bde4747780
> [290672.003903] R13: 0000000000000003 R14: 0000000000000180 R15: 000000000000000a
> [290672.011119] FS:  0000000000000000(0000) GS:ffff88183fc80000(0000) knlGS:0000000000000000
> [290672.019280] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290672.025099] CR2: 0000000000bb7877 CR3: 0000000001603000 CR4: 00000000000006e0
> [290672.032308] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290672.039515] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290672.046723] Process kworker/0:1 (pid: 0, threadinfo ffff880c0f318000, task ffff880c0f3110a0)
> [290672.055230] Stack:
> [290672.057325]  ffffffffa026a018 0000000000000000 0000000019be7a95 00000001045426d3
> [290672.064862]  ffff88180ef06020 ffff88180ef06150 0000000000000000 0000000000000003
> [290672.072399]  ffffffff812665c3 0000000000000000 ffff880c0f318010 ffffffff81684cc0
> [290672.079937] Call Trace:
> [290672.082469]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290672.089772]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290672.095945]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290672.101161]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290672.107155] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290672.127183] Call Trace:
> [290672.129716]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290672.137017]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290672.143193]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290672.148409]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290672.154412] NMI backtrace for cpu 11
> [290672.158075] CPU 11 
> [290672.160086] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290672.200022] 
> [290672.201597] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290672.210851] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290672.219721] RSP: 0018:ffff880c0f321e80  EFLAGS: 00000046
> [290672.225108] RAX: 0000000000000020 RBX: ffff88180be52d08 RCX: 0000000000000001
> [290672.232316] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290672.239525] RBP: ffff88180be52800 R08: ffff880c0f321fd8 R09: 0000000100000000
> [290672.246733] R10: ffffffff8100e36a R11: ffff88180be52800 R12: 124037bde3bd9863
> [290672.253938] R13: 0000000000000003 R14: 0000000000000180 R15: 000000000000000b
> [290672.261146] FS:  0000000000000000(0000) GS:ffff88183fca0000(0000) knlGS:0000000000000000
> [290672.269307] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290672.275129] CR2: 00007f18ca2ebce0 CR3: 0000000001603000 CR4: 00000000000006e0
> [290672.282337] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290672.289552] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290672.296760] Process kworker/0:1 (pid: 0, threadinfo ffff880c0f320000, task ffff880c0f3102c0)
> [290672.305267] Stack:
> [290672.307362]  ffffffffa026a018 0000000000000003 000000003b5dc006 00000001045424e7
> [290672.314898]  ffff88180be52820 ffff88180be52950 0000000000000000 0000000000000003
> [290672.322436]  ffffffff812665c3 0000000000000000 ffff880c0f320010 ffffffff81684cc0
> [290672.329973] Call Trace:
> [290672.332506]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290672.339807]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290672.345984]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290672.351206]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290672.357201] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290672.377229] Call Trace:
> [290672.379762]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290672.387063]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290672.393239]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290672.398455]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290672.404458] NMI backtrace for cpu 12
> [290672.408121] CPU 12 
> [290672.410130] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290672.450068] 
> [290672.451644] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290672.460895] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290672.469774] RSP: 0018:ffff880c0f339e80  EFLAGS: 00000046
> [290672.475163] RAX: 0000000000000020 RBX: ffff88180bdf7d08 RCX: 0000000000000001
> [290672.482372] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290672.489587] RBP: ffff88180bdf7800 R08: ffff880c0f339fd8 R09: 0000000100000000
> [290672.496794] R10: 0000000000012840 R11: ffff88180bdf7800 R12: 124037bde473806a
> [290672.504001] R13: 0000000000000003 R14: 0000000000000180 R15: 000000000000000c
> [290672.511209] FS:  0000000000000000(0000) GS:ffff880c3fcc0000(0000) knlGS:0000000000000000
> [290672.519370] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290672.525192] CR2: 00007f8b3d35d000 CR3: 0000000001603000 CR4: 00000000000006e0
> [290672.532408] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290672.539623] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290672.546831] Process kworker/0:1 (pid: 0, threadinfo ffff880c0f338000, task ffff880c0f337810)
> [290672.555338] Stack:
> [290672.557434]  ffffffffa026a018 0000000000000000 00000000003d008e 00010879f7320457
> [290672.564971]  ffff88180bdf7820 ffff88180bdf7950 0000000000000000 0000000000000003
> [290672.572507]  ffffffff812665c3 0000000000000000 ffff880c0f338010 ffffffff81684cc0
> [290672.580043] Call Trace:
> [290672.582578]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290672.589880]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290672.596054]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290672.601271]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290672.608053]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290672.614055] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290672.634093] Call Trace:
> [290672.636624]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290672.643927]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290672.650102]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290672.655328]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290672.662109]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290672.668104] NMI backtrace for cpu 13
> [290672.671768] CPU 13 
> [290672.673778] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290672.713713] 
> [290672.715291] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290672.724550] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290672.733431] RSP: 0018:ffff880c0f36fe80  EFLAGS: 00000046
> [290672.738818] RAX: 0000000000000020 RBX: ffff88180ef04d08 RCX: 0000000000000001
> [290672.746027] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290672.753242] RBP: ffff88180ef04800 R08: ffff880c0f36ffd8 R09: 0000000100000000
> [290672.760449] R10: ffffffff81039cf2 R11: ffff88180ef04800 R12: 124037bde494c29c
> [290672.767658] R13: 0000000000000003 R14: 0000000000000180 R15: 000000000000000d
> [290672.774873] FS:  0000000000000000(0000) GS:ffff880c3fce0000(0000) knlGS:0000000000000000
> [290672.783034] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290672.788854] CR2: 000000124fd9cd01 CR3: 0000000001603000 CR4: 00000000000006e0
> [290672.796063] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290672.803270] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290672.810478] Process kworker/0:1 (pid: 0, threadinfo ffff880c0f36e000, task ffff880c0f367160)
> [290672.818985] Stack:
> [290672.821080]  ffffffffa026a018 0000000000000000 00000000000f2962 0001087a1e2f9fe2
> [290672.828618]  ffff88180ef04820 ffff88180ef04950 0000000000000000 0000000000000003
> [290672.836155]  ffffffff812665c3 0000000000000282 ffff880c0f36e010 ffffffff81684cc0
> [290672.843691] Call Trace:
> [290672.846226]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290672.853525]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290672.859703]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290672.864926]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290672.871709]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290672.877710] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290672.897748] Call Trace:
> [290672.900279]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290672.907581]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290672.913757]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290672.918974]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290672.925755]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290672.931751] NMI backtrace for cpu 14
> [290672.935415] CPU 14 
> [290672.937424] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290672.977368] 
> [290672.978944] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290672.988196] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290672.997077] RSP: 0018:ffff880c0f381e80  EFLAGS: 00000046
> [290673.002474] RAX: 0000000000000020 RBX: ffff880c0d6f3d08 RCX: 0000000000000001
> [290673.009681] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290673.016889] RBP: ffff880c0d6f3800 R08: ffff880c0f381fd8 R09: 0000000100000000
> [290673.024104] R10: 0000000000012840 R11: ffff880c0d6f3800 R12: 124037bde47462b7
> [290673.031311] R13: 0000000000000003 R14: 0000000000000180 R15: 000000000000000e
> [290673.038519] FS:  0000000000000000(0000) GS:ffff880c3fd00000(0000) knlGS:0000000000000000
> [290673.046681] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290673.052502] CR2: 000000000ae9c2b0 CR3: 0000000001603000 CR4: 00000000000006e0
> [290673.059708] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290673.066916] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290673.074125] Process kworker/0:1 (pid: 0, threadinfo ffff880c0f380000, task ffff880c0f376ab0)
> [290673.082639] Stack:
> [290673.084737]  ffffffffa026a018 0000000000000000 00000000003c213c 0001087a1d79d1ea
> [290673.092273]  ffff880c0d6f3820 ffff880c0d6f3950 0000000000000000 0000000000000003
> [290673.099809]  ffffffff812665c3 0001087344c6e95b ffff880c0f380010 ffffffff81684cc0
> [290673.107346] Call Trace:
> [290673.109879]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290673.117179]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290673.123348]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290673.128571]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290673.135347]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290673.141349] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290673.161377] Call Trace:
> [290673.163918]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290673.171219]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290673.177387]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290673.182611]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290673.189393]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290673.195389] NMI backtrace for cpu 15
> [290673.199053] CPU 15 
> [290673.201069] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290673.241005] 
> [290673.242583] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290673.251844] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290673.260713] RSP: 0018:ffff880c0f3b7e80  EFLAGS: 00000046
> [290673.266103] RAX: 0000000000000020 RBX: ffff880c0d6f3508 RCX: 0000000000000001
> [290673.273319] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290673.280534] RBP: ffff880c0d6f3000 R08: ffff880c0f3b7fd8 R09: 0000000100000000
> [290673.287743] R10: 0000000000012840 R11: ffff880c0d6f3000 R12: 124037bde48bf93b
> [290673.294949] R13: 0000000000000003 R14: 0000000000000180 R15: 000000000000000f
> [290673.302157] FS:  0000000000000000(0000) GS:ffff880c3fd20000(0000) knlGS:0000000000000000
> [290673.310319] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290673.316139] CR2: 00007f6896ed9cfc CR3: 0000000001603000 CR4: 00000000000006e0
> [290673.323347] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290673.330555] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290673.337762] Process kworker/0:1 (pid: 0, threadinfo ffff880c0f3b6000, task ffff880c0f388400)
> [290673.346270] Stack:
> [290673.348365]  ffffffffa026a018 0000000000000000 00000000002ee8d5 0001087a1da55792
> [290673.355902]  ffff880c0d6f3020 ffff880c0d6f3150 0000000000000000 0000000000000003
> [290673.363438]  ffffffff812665c3 0000000000000000 ffff880c0f3b6010 ffffffff81684cc0
> [290673.370974] Call Trace:
> [290673.373508]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290673.380810]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290673.386988]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290673.392209]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290673.398992]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290673.404986] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290673.425022] Call Trace:
> [290673.427556]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290673.434857]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290673.441034]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290673.446258]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290673.453040]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290673.459043] NMI backtrace for cpu 16
> [290673.462699] CPU 16 
> [290673.464707] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290673.504644] 
> [290673.506222] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290673.515482] RIP: 0010:[<ffffffff811ac903>]  [<ffffffff811ac903>] delay_tsc+0x47/0x74
> [290673.523320] RSP: 0018:ffff880c3fd43db0  EFLAGS: 00000083
> [290673.528710] RAX: 000000002cbeb9f3 RBX: 000000002cbeb9c7 RCX: 000000002cbeb9f3
> [290673.535917] RDX: 000000000000002c RSI: 0000000000000200 RDI: 000000000003d5b7
> [290673.543125] RBP: 000000000003d5b7 R08: 0000000000000000 R09: ffffffff81684cc0
> [290673.550339] R10: 00000000000002c0 R11: ffffffff8106d357 R12: 0000000000000010
> [290673.557549] R13: 0000000000000010 R14: ffffffff81684cc0 R15: 0000000000000011
> [290673.564756] FS:  0000000000000000(0000) GS:ffff880c3fd40000(0000) knlGS:0000000000000000
> [290673.572915] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290673.578738] CR2: 00007f15e634f000 CR3: 0000000001603000 CR4: 00000000000006e0
> [290673.585945] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290673.593152] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290673.600359] Process kworker/0:1 (pid: 0, threadinfo ffff880c0f3ce000, task ffff880c0f3cd550)
> [290673.608867] Stack:
> [290673.610963]  0000000000000000 0000000000001000 0000000000000002 0000000000000400
> [290673.618499]  ffffffff810200b5 ffffffff8161db00 0000000000000092 000000000000dcc0
> [290673.626037]  ffffffff81020345 ffff880c3fd40015 ffff880c3fd43e58 ffff880c3fd43e18
> [290673.633573] Call Trace:
> [290673.636103]  <IRQ> 
> [290673.638306]  [<ffffffff810200b5>] ? native_safe_apic_wait_icr_idle+0x2e/0x41
> [290673.645436]  [<ffffffff81020345>] ? default_send_IPI_mask_sequence_phys+0x5c/0xc7
> [290673.652998]  [<ffffffff8102040f>] ? arch_trigger_all_cpu_backtrace+0x4a/0x7f
> [290673.660127]  [<ffffffff8109778a>] ? __rcu_pending+0x1f8/0x2f8
> [290673.665958]  [<ffffffff8106d357>] ? tick_nohz_handler+0xd0/0xd0
> [290673.671960]  [<ffffffff81097943>] ? rcu_check_callbacks+0xb9/0xea
> [290673.678128]  [<ffffffff810528b2>] ? update_process_times+0x31/0x63
> [290673.684392]  [<ffffffff8106d3c1>] ? tick_sched_timer+0x6a/0x90
> [290673.690308]  [<ffffffff81063655>] ? __run_hrtimer+0xb1/0x13c
> [290673.696052]  [<ffffffff8100e36a>] ? read_tsc+0x5/0x16
> [290673.701188]  [<ffffffff81063919>] ? hrtimer_interrupt+0xd8/0x1a6
> [290673.707271]  [<ffffffff810651b3>] ? sched_clock_idle_wakeup_event+0x12/0x1c
> [290673.714314]  [<ffffffff81020074>] ? smp_apic_timer_interrupt+0x80/0x93
> [290673.720924]  [<ffffffff8133ec53>] ? apic_timer_interrupt+0x13/0x20
> [290673.727184]  <EOI> 
> [290673.729388]  [<ffffffff811fd718>] ? acpi_hw_read_multiple+0x28/0x60
> [290673.735735]  [<ffffffff8100e33d>] ? sched_clock+0x5/0x8
> [290673.741039]  [<ffffffffa026a06c>] ? acpi_idle_enter_bm+0x256/0x291 [processor]
> [290673.748342]  [<ffffffffa026a068>] ? acpi_idle_enter_bm+0x252/0x291 [processor]
> [290673.755644]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290673.761820]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290673.767044]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290673.773828]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290673.779829] Code: ff 66 90 48 63 d8 66 66 90 0f ae e8 e8 2a 24 e6 ff 66 90 48 98 48 89 c2 48 29 da 48 39 ea 73 2b f3 90 65 44 8b 2c 25 a8 dc 00 00 
> [290673.793673]  39 ec 74 d6 48 29 c3 48 01 dd 66 66 90 0f ae e8 e8 fa 23 e6 
> [290673.801097] Call Trace:
> [290673.803634]  <IRQ>  [<ffffffff810200b5>] ? native_safe_apic_wait_icr_idle+0x2e/0x41
> [290673.811382]  [<ffffffff81020345>] ? default_send_IPI_mask_sequence_phys+0x5c/0xc7
> [290673.818944]  [<ffffffff8102040f>] ? arch_trigger_all_cpu_backtrace+0x4a/0x7f
> [290673.826073]  [<ffffffff8109778a>] ? __rcu_pending+0x1f8/0x2f8
> [290673.831902]  [<ffffffff8106d357>] ? tick_nohz_handler+0xd0/0xd0
> [290673.837898]  [<ffffffff81097943>] ? rcu_check_callbacks+0xb9/0xea
> [290673.844073]  [<ffffffff810528b2>] ? update_process_times+0x31/0x63
> [290673.850328]  [<ffffffff8106d3c1>] ? tick_sched_timer+0x6a/0x90
> [290673.856236]  [<ffffffff81063655>] ? __run_hrtimer+0xb1/0x13c
> [290673.861971]  [<ffffffff8100e36a>] ? read_tsc+0x5/0x16
> [290673.867099]  [<ffffffff81063919>] ? hrtimer_interrupt+0xd8/0x1a6
> [290673.873182]  [<ffffffff810651b3>] ? sched_clock_idle_wakeup_event+0x12/0x1c
> [290673.880224]  [<ffffffff81020074>] ? smp_apic_timer_interrupt+0x80/0x93
> [290673.886826]  [<ffffffff8133ec53>] ? apic_timer_interrupt+0x13/0x20
> [290673.893086]  <EOI>  [<ffffffff811fd718>] ? acpi_hw_read_multiple+0x28/0x60
> [290673.900062]  [<ffffffff8100e33d>] ? sched_clock+0x5/0x8
> [290673.905366]  [<ffffffffa026a06c>] ? acpi_idle_enter_bm+0x256/0x291 [processor]
> [290673.912668]  [<ffffffffa026a068>] ? acpi_idle_enter_bm+0x252/0x291 [processor]
> [290673.919971]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290673.926146]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290673.931361]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290673.938136]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290673.944199] NMI backtrace for cpu 17
> [290673.947864] CPU 17 
> [290673.949873] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290673.989807] 
> [290673.991385] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290674.000637] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290674.009508] RSP: 0018:ffff880c0ec71e80  EFLAGS: 00000046
> [290674.014897] RAX: 0000000000000020 RBX: ffff880c0bdcad08 RCX: 0000000000000001
> [290674.022105] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290674.029312] RBP: ffff880c0bdca800 R08: ffff880c0ec71fd8 R09: 0000000100000000
> [290674.036519] R10: 0000000000012840 R11: ffff880c0bdca800 R12: 124037bf14ad8763
> [290674.043727] R13: 0000000000000003 R14: 0000000000000180 R15: 0000000000000011
> [290674.050935] FS:  0000000000000000(0000) GS:ffff880c3fd60000(0000) knlGS:0000000000000000
> [290674.059105] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290674.064933] CR2: 00007f81a74860c0 CR3: 0000000001603000 CR4: 00000000000006e0
> [290674.072141] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290674.079349] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290674.086555] Process kworker/0:1 (pid: 0, threadinfo ffff880c0ec70000, task ffff880c0ec447f0)
> [290674.095062] Stack:
> [290674.097160]  ffffffffa026a018 0000000000000000 00000000003be55a 0001087b4c9e0b88
> [290674.104696]  ffff880c0bdca820 ffff880c0bdca950 0000000000000000 0000000000000003
> [290674.112231]  ffffffff812665c3 0000000000000000 ffff880c0ec70010 ffffffff81684cc0
> [290674.119768] Call Trace:
> [290674.122302]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290674.129603]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290674.135780]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290674.141004]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290674.147786]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290674.153781] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290674.173817] Call Trace:
> [290674.176349]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290674.183652]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290674.189828]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290674.195053]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290674.201835]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290674.207839] NMI backtrace for cpu 18
> [290674.211502] CPU 18 
> [290674.213512] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290674.253446] 
> [290674.255024] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290674.264276] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290674.273156] RSP: 0018:ffff880c0ec7be80  EFLAGS: 00000046
> [290674.278553] RAX: 0000000000000020 RBX: ffff880c0b015d08 RCX: 0000000000000001
> [290674.285767] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290674.292975] RBP: ffff880c0b015800 R08: ffff880c0ec7bfd8 R09: 0000000100000000
> [290674.300184] R10: 0000000000012840 R11: ffff880c0b015800 R12: 124037bf14adc864
> [290674.307400] R13: 0000000000000003 R14: 0000000000000180 R15: 0000000000000012
> [290674.314608] FS:  0000000000000000(0000) GS:ffff88183fcc0000(0000) knlGS:0000000000000000
> [290674.322777] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290674.328605] CR2: 00007f0fa0c995b0 CR3: 0000000001603000 CR4: 00000000000006e0
> [290674.335812] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290674.343021] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290674.350229] Process kworker/0:1 (pid: 0, threadinfo ffff880c0ec7a000, task ffff880c0ec79610)
> [290674.358744] Stack:
> [290674.360841]  ffffffffa026a018 0000000000000000 00000000003bb52d 0001087b4ab56f28
> [290674.368378]  ffff880c0b015820 ffff880c0b015950 0000000000000000 0000000000000003
> [290674.375914]  ffffffff812665c3 0000000000000000 ffff880c0ec7a010 ffffffff81684cc0
> [290674.383449] Call Trace:
> [290674.385983]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290674.393286]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290674.399460]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290674.404677]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290674.411459]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290674.417452] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290674.437482] Call Trace:
> [290674.440012]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290674.447314]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290674.453483]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290674.458706]  [<ffffffff81338ce3>] ? _raw_spin_unlock_irqrestore+0xb/0x11
> [290674.465481]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290674.471476] NMI backtrace for cpu 19
> [290674.475138] CPU 19 
> [290674.477149] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290674.517084] 
> [290674.518663] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290674.527921] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290674.536802] RSP: 0018:ffff880c0ec85e80  EFLAGS: 00000046
> [290674.542198] RAX: 0000000000000020 RBX: ffff880c0b015508 RCX: 0000000000000001
> [290674.549406] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290674.556613] RBP: ffff880c0b015000 R08: ffff880c0ec85fd8 R09: 0000000100000000
> [290674.563821] R10: 0000000000012840 R11: ffff880c0b015000 R12: 124037bf14adb79d
> [290674.571028] R13: 0000000000000003 R14: 0000000000000180 R15: 0000000000000013
> [290674.578237] FS:  0000000000000000(0000) GS:ffff88183fce0000(0000) knlGS:0000000000000000
> [290674.586406] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290674.592226] CR2: 00007f9503d188e2 CR3: 0000000001603000 CR4: 00000000000006e0
> [290674.599434] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290674.606642] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290674.613858] Process kworker/0:1 (pid: 0, threadinfo ffff880c0ec84000, task ffff880c0ec78830)
> [290674.622365] Stack:
> [290674.624460]  ffffffffa026a018 0000000000000000 00000000003bbd81 0001087b4ab59e7c
> [290674.631998]  ffff880c0b015020 ffff880c0b015150 0000000000000000 0000000000000003
> [290674.639533]  ffffffff812665c3 0001087a5b378f7f ffff880c0ec84010 ffffffff81684cc0
> [290674.647072] Call Trace:
> [290674.649604]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290674.656906]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290674.663082]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290674.668306]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290674.674307] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290674.694336] Call Trace:
> [290674.696867]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290674.704168]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290674.710338]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290674.715561]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290674.721565] NMI backtrace for cpu 20
> [290674.725227] CPU 20 
> [290674.727237] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290674.767174] 
> [290674.768751] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290674.778002] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290674.786881] RSP: 0018:ffff880c0ec91e80  EFLAGS: 00000046
> [290674.792271] RAX: 0000000000000020 RBX: ffff880c0cfc8d08 RCX: 0000000000000001
> [290674.799486] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290674.806693] RBP: ffff880c0cfc8800 R08: ffff880c0ec91fd8 R09: 0000000100000000
> [290674.813901] R10: 0000000000012840 R11: ffff880c0cfc8800 R12: 124037bf14adc190
> [290674.821108] R13: 0000000000000003 R14: 0000000000000180 R15: 0000000000000014
> [290674.828316] FS:  0000000000000000(0000) GS:ffff88183fd00000(0000) knlGS:0000000000000000
> [290674.836476] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290674.842299] CR2: 00007f42e21f10c0 CR3: 0000000001603000 CR4: 00000000000006e0
> [290674.849504] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290674.856713] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290674.863921] Process kworker/0:1 (pid: 0, threadinfo ffff880c0ec90000, task ffff880c0ec8f650)
> [290674.872436] Stack:
> [290674.874531]  ffffffffa026a018 0000000000000000 00000000003bb988 0001087b4cfe0ef0
> [290674.882069]  ffff880c0cfc8820 ffff880c0cfc8950 0000000000000000 0000000000000003
> [290674.889605]  ffffffff812665c3 0001087344d4e028 ffff880c0ec90010 ffffffff81684cc0
> [290674.897141] Call Trace:
> [290674.899676]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290674.906977]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290674.913152]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290674.918368]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290674.924362] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290674.944388] Call Trace:
> [290674.946923]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290674.954225]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290674.960400]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290674.965615]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290674.971610] NMI backtrace for cpu 21
> [290674.975273] CPU 21 
> [290674.977283] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290675.017218] 
> [290675.018796] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290675.028049] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290675.036919] RSP: 0018:ffff880c0ec97e80  EFLAGS: 00000046
> [290675.042308] RAX: 0000000000000020 RBX: ffff880c0cfc8508 RCX: 0000000000000001
> [290675.049524] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290675.056731] RBP: ffff880c0cfc8000 R08: ffff880c0ec97fd8 R09: 0000000100000000
> [290675.063939] R10: 0000000000012840 R11: ffff880c0cfc8000 R12: 124037bf14adc49c
> [290675.071155] R13: 0000000000000003 R14: 0000000000000180 R15: 0000000000000015
> [290675.078372] FS:  0000000000000000(0000) GS:ffff88183fd20000(0000) knlGS:0000000000000000
> [290675.086540] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290675.092361] CR2: 000000000877cb14 CR3: 0000000001603000 CR4: 00000000000006e0
> [290675.099567] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290675.106776] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290675.113984] Process kworker/0:1 (pid: 0, threadinfo ffff880c0ec96000, task ffff880c0ec8e870)
> [290675.122490] Stack:
> [290675.124586]  ffffffffa026a018 0000000000000000 00000000003bb334 0001087b4ab56f8f
> [290675.132123]  ffff880c0cfc8020 ffff880c0cfc8150 0000000000000000 0000000000000003
> [290675.139661]  ffffffff812665c3 0000000000000000 ffff880c0ec96010 ffffffff81684cc0
> [290675.147197] Call Trace:
> [290675.149731]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290675.157030]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290675.163207]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290675.168423]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290675.174424] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290675.194453] Call Trace:
> [290675.196984]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290675.204286]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290675.210455]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290675.215677]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290675.221673] NMI backtrace for cpu 22
> [290675.225336] CPU 22 
> [290675.227346] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290675.267281] 
> [290675.268860] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290675.278119] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290675.286991] RSP: 0018:ffff880c0eca3e80  EFLAGS: 00000046
> [290675.292377] RAX: 0000000000000020 RBX: ffff880c0be62d08 RCX: 0000000000000001
> [290675.299586] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290675.306793] RBP: ffff880c0be62800 R08: ffff880c0eca3fd8 R09: 0000000100000000
> [290675.314000] R10: 0000000000012840 R11: ffff880c0be62800 R12: 124037bf14ad07c6
> [290675.321209] R13: 0000000000000003 R14: 0000000000000180 R15: 0000000000000016
> [290675.328416] FS:  0000000000000000(0000) GS:ffff88183fd40000(0000) knlGS:0000000000000000
> [290675.336586] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290675.342414] CR2: 0000000000ac3ace CR3: 0000000001603000 CR4: 00000000000006e0
> [290675.349624] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290675.356839] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290675.364047] Process kworker/0:1 (pid: 0, threadinfo ffff880c0eca2000, task ffff880c0eca1690)
> [290675.372562] Stack:
> [290675.374657]  ffffffffa026a018 0000000000000000 00000000003c5ad4 0001087b481b78fb
> [290675.382194]  ffff880c0be62820 ffff880c0be62950 0000000000000000 0000000000000003
> [290675.389733]  ffffffff812665c3 0000000000000000 ffff880c0eca2010 ffffffff81684cc0
> [290675.397269] Call Trace:
> [290675.399801]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290675.407103]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290675.413278]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290675.418495]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290675.424495] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290675.444525] Call Trace:
> [290675.447057]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290675.454358]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290675.460526]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290675.465751]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290675.471754] NMI backtrace for cpu 23
> [290675.475417] CPU 23 
> [290675.477427] Modules linked in: ext2 loop snd_pcm snd_timer snd usbhid hid uhci_hcd soundcore ioatdma ahci snd_page_alloc ehci_hcd tpm_tis libahci i7core_edac tpm psmouse ses ghes dca i2c_i801 tpm_bios hed evdev edac_core libata usbcore serio_raw pcspkr e1000e i2c_core enclosure processor thermal_sys button ext4 mbcache jbd2 crc16 dm_mod raid10 raid1 md_mod shpchp pci_hotplug sd_mod crc_t10dif mpt2sas scsi_transport_sas raid_class scsi_mod
> [290675.517361] 
> [290675.518939] Pid: 0, comm: kworker/0:1 Tainted: G        W    3.0.0-1-amd64 #1 Supermicro X8DT6/X8DT6
> [290675.528190] RIP: 0010:[<ffffffff8100f269>]  [<ffffffff8100f269>] mwait_idle_with_hints+0x67/0x68
> [290675.537069] RSP: 0018:ffff880c0ecade80  EFLAGS: 00000046
> [290675.542460] RAX: 0000000000000020 RBX: ffff880c0be62508 RCX: 0000000000000001
> [290675.549675] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000020
> [290675.556882] RBP: ffff880c0be62000 R08: ffff880c0ecadfd8 R09: 0000000100000000
> [290675.564089] R10: ffffffff8100e36a R11: ffff880c0be62000 R12: 124037bf14339dd6
> [290675.571298] R13: 0000000000000003 R14: 0000000000000180 R15: 0000000000000017
> [290675.578505] FS:  0000000000000000(0000) GS:ffff88183fd60000(0000) knlGS:0000000000000000
> [290675.586665] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [290675.592486] CR2: 00007fe098402df8 CR3: 0000000001603000 CR4: 00000000000006e0
> [290675.599695] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [290675.606903] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [290675.614117] Process kworker/0:1 (pid: 0, threadinfo ffff880c0ecac000, task ffff880c0eca08b0)
> [290675.622626] Stack:
> [290675.624721]  ffffffffa026a018 0000000000000000 0000000002d9a1b6 0000000104542c0b
> [290675.632257]  ffff880c0be62020 ffff880c0be62150 0000000000000000 0000000000000003
> [290675.639795]  ffffffff812665c3 0000000000000000 ffff880c0ecac010 ffffffff81684cc0
> [290675.647331] Call Trace:
> [290675.649863]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290675.657166]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290675.663342]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290675.668566]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> [290675.674567] Code: 8b 04 25 08 cd 00 00 48 89 d1 49 8d 80 38 e0 ff ff 0f 01 c8 0f ae f0 49 8b 80 38 e0 ff ff a8 08 75 09 48 89 f8 48 89 f1 0f 01 c9 <c3> 48 8b 57 08 0f a3 72 10 19 c0 c3 f0 0f b3 3d 43 22 72 00 c3 
> [290675.694597] Call Trace:
> [290675.697129]  [<ffffffffa026a018>] ? acpi_idle_enter_bm+0x202/0x291 [processor]
> [290675.704429]  [<ffffffff812665c3>] ? cpuidle_idle_call+0x123/0x1d4
> [290675.710596]  [<ffffffff81008dbd>] ? cpu_idle+0xab/0xe1
> [290675.715812]  [<ffffffff8133157e>] ? start_secondary+0x1db/0x1e1
> 
> 
> The log keeps on going for a while, with more "rcu_sched_state detected
> stalls on CPUs/tasks: { 0}" messages. It kept spewing them, doing no
> useful work, until I reset the machine. Log (from a serial console) is
> 87M total. 12M compressed. I've placed it at:
> <https://dl.dropbox.com/s/dg8v67kaxolmrub/kuyou-raidcheck-crash.log.gz?dl=1>
> 
> 
> The extra patch just gets rid of REQ_FLUSH/FUA in mdraid, hence the
> 'eatmydata' in the kernel version. This makes the Oracle workload an
> order of magnitude faster. Here it is:
> 
> Index: linux-2.6-3.0.0/drivers/md/md.c
> ===================================================================
> --- linux-2.6-3.0.0.orig/drivers/md/md.c        2011-08-31 15:23:46.474036586 -0400
> +++ linux-2.6-3.0.0/drivers/md/md.c     2011-08-31 15:24:01.294007938 -0400
> @@ -4361,7 +4361,7 @@
>         disk->fops = &md_fops;
>         disk->private_data = mddev;
>         disk->queue = mddev->queue;
> -       blk_queue_flush(mddev->queue, REQ_FLUSH | REQ_FUA);
> +       blk_queue_flush(mddev->queue, 0); /* omm nom nom, data tasty! */
>         /* Allow extended partitions.  This makes the
>          * 'mdp' device redundant, but we can't really
>          * remove it now.
> 
> 
> 
> [please CC me on replies; I'm not subscribed to linux-kernel]
> --
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