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Bug#866511: kernel BUG at nvme/host/pci.c



Am 05.07.17 um 19:31 schrieb Ben Hutchings:
> Control: reassign -1 src:linux 4.9.30-2+deb9u2
> Control: tag -1 upstream patch moreinfo
>
> On Thu, 2017-06-29 at 19:30 +0200, Andreas Pflug wrote:
>> Package: linux-image-4.9.0-3-amd64
>>
>> Version: 4.9.30-2+deb9u2
>>
>> When starting an ancient Windows Server 2003 virtual machine on a fully
>> updated stretch host, the host will crash repeatably about 10 seconds
>> after start. Kernel logging was implemented over netconsole, so I could
>> capture the kernel output stating
>>
>> kernel BUG at /build/linux-9uDFZV/linux-4.9.30/drivers/nvme/host/pci.c:495!
> A single log line is rarely enough to be useful...
>
>> Hardware is dual E5-2620v4 on Supermicro 10DRI-T with two SAMSUNG
>> MZQLW960HMJP-00003 NVME disks (mdadm RAID-1).
>>
>> drivers/nvme/host/pci.c wasn't changed up to 4.11.8, the crashing
>> function nvme_setup_prps still the same in 4.12rc7, so I guess the bug
>> is still there.
> ...but I happened to see a fix that mentioned this function.
>
> This should make its way into a stable update eventually, but perhaps
> you could confirm that the attached patch fixes your problem by
> following these instructions:
> https://kernel-handbook.alioth.debian.org/ch-common-tasks.html#s-common-official

The description of the patch seems very promising, but using the
4.9.30-2+deb9u2a~test kernel the bug happens as well.
Log is attached, cut after 460 lines: the last trace on CPU15 is
repeated all over again, eventually leading to "Fixing recursive fault
but reboot is needed!"

Regards,
Andreas
Jul  6 02:19:43 xen2 [20341.128619] ------------[ cut here ]------------
Jul  6 02:19:43 xen2 [20341.128653] kernel BUG at /usr/src/kernel/linux-4.9.30/drivers/nvme/host/pci.c:495!
Jul  6 02:19:43 xen2 [20341.128684] invalid opcode: 0000 [#1] SMP
Jul  6 02:19:43 xen2 [20341.128702] Modules linked in:
Jul  6 02:19:43 xen2  xt_physdev
Jul  6 02:19:43 xen2  br_netfilter
Jul  6 02:19:43 xen2  iptable_filter
Jul  6 02:19:43 xen2  xen_netback
Jul  6 02:19:43 xen2  xen_blkback
Jul  6 02:19:43 xen2  netconsole
Jul  6 02:19:43 xen2  configfs
Jul  6 02:19:43 xen2  bridge
Jul  6 02:19:43 xen2  xen_gntdev
Jul  6 02:19:43 xen2  xen_evtchn
Jul  6 02:19:43 xen2  xenfs
Jul  6 02:19:43 xen2  xen_privcmd
Jul  6 02:19:43 xen2  iTCO_wdt
Jul  6 02:19:43 xen2  iTCO_vendor_support
Jul  6 02:19:43 xen2  mxm_wmi
Jul  6 02:19:43 xen2  intel_rapl
Jul  6 02:19:43 xen2  sb_edac
Jul  6 02:19:43 xen2  edac_core
Jul  6 02:19:43 xen2  x86_pkg_temp_thermal
Jul  6 02:19:43 xen2  intel_powerclamp
Jul  6 02:19:43 xen2  coretemp
Jul  6 02:19:43 xen2  crct10dif_pclmul
Jul  6 02:19:43 xen2  crc32_pclmul
Jul  6 02:19:43 xen2  ghash_clmulni_intel
Jul  6 02:19:43 xen2  intel_rapl_perf
Jul  6 02:19:43 xen2  pcspkr
Jul  6 02:19:43 xen2  i2c_i801
Jul  6 02:19:43 xen2  i2c_smbus
Jul  6 02:19:43 xen2  joydev
Jul  6 02:19:43 xen2  ast
Jul  6 02:19:43 xen2  ttm
Jul  6 02:19:43 xen2  drm_kms_helper
Jul  6 02:19:43 xen2  drm
Jul  6 02:19:43 xen2  i2c_algo_bit
Jul  6 02:19:43 xen2  ixgbe
Jul  6 02:19:43 xen2  e1000e
Jul  6 02:19:43 xen2  ptp
Jul  6 02:19:43 xen2  sg
Jul  6 02:19:43 xen2  mdio
Jul  6 02:19:43 xen2  pps_core
Jul  6 02:19:43 xen2  nvme
Jul  6 02:19:43 xen2  nvme_core
Jul  6 02:19:43 xen2  mei_me
Jul  6 02:19:43 xen2  ehci_pci
Jul  6 02:19:43 xen2  ioatdma
Jul  6 02:19:43 xen2  lpc_ich
Jul  6 02:19:43 xen2  ehci_hcd
Jul  6 02:19:43 xen2  mfd_core
Jul  6 02:19:43 xen2  mei
Jul  6 02:19:43 xen2  shpchp
Jul  6 02:19:43 xen2  dca
Jul  6 02:19:43 xen2  wmi
Jul  6 02:19:43 xen2  acpi_power_meter
Jul  6 02:19:43 xen2  8021q
Jul  6 02:19:43 xen2  garp
Jul  6 02:19:43 xen2  mrp
Jul  6 02:19:43 xen2  stp
Jul  6 02:19:43 xen2  llc
Jul  6 02:19:43 xen2  button
Jul  6 02:19:43 xen2  ipmi_si
Jul  6 02:19:43 xen2  ipmi_devintf
Jul  6 02:19:43 xen2  ipmi_msghandler
Jul  6 02:19:43 xen2  drbd
Jul  6 02:19:43 xen2  lru_cache
Jul  6 02:19:43 xen2  sunrpc
Jul  6 02:19:43 xen2  ip_tables
Jul  6 02:19:43 xen2  x_tables
Jul  6 02:19:43 xen2  autofs4
Jul  6 02:19:43 xen2  ext4
Jul  6 02:19:43 xen2  crc16
Jul  6 02:19:43 xen2  jbd2
Jul  6 02:19:43 xen2  fscrypto
Jul  6 02:19:43 xen2  ecb
Jul  6 02:19:43 xen2  mbcache
Jul  6 02:19:43 xen2  raid10
Jul  6 02:19:43 xen2  raid456
Jul  6 02:19:43 xen2  libcrc32c
Jul  6 02:19:43 xen2  crc32c_generic
Jul  6 02:19:43 xen2  async_raid6_recov
Jul  6 02:19:43 xen2  async_memcpy
Jul  6 02:19:43 xen2  async_pq
Jul  6 02:19:43 xen2  async_xor
Jul  6 02:19:43 xen2  xor
Jul  6 02:19:43 xen2  async_tx
Jul  6 02:19:43 xen2  evdev
Jul  6 02:19:43 xen2  hid_generic
Jul  6 02:19:43 xen2  usbhid
Jul  6 02:19:43 xen2  hid
Jul  6 02:19:43 xen2  raid6_pq
Jul  6 02:19:43 xen2  raid0
Jul  6 02:19:43 xen2  multipath
Jul  6 02:19:43 xen2  linear
Jul  6 02:19:43 xen2  bcache
Jul  6 02:19:43 xen2  dm_mod
Jul  6 02:19:43 xen2  raid1
Jul  6 02:19:43 xen2  md_mod
Jul  6 02:19:43 xen2  sd_mod
Jul  6 02:19:43 xen2  crc32c_intel
Jul  6 02:19:43 xen2  aesni_intel
Jul  6 02:19:43 xen2  aes_x86_64
Jul  6 02:19:43 xen2  glue_helper
Jul  6 02:19:43 xen2  lrw
Jul  6 02:19:43 xen2  gf128mul
Jul  6 02:19:43 xen2  ablk_helper
Jul  6 02:19:43 xen2  cryptd
Jul  6 02:19:43 xen2  ahci
Jul  6 02:19:43 xen2  xhci_pci
Jul  6 02:19:43 xen2  libahci
Jul  6 02:19:43 xen2  xhci_hcd
Jul  6 02:19:43 xen2  libata
Jul  6 02:19:43 xen2  usbcore
Jul  6 02:19:43 xen2  scsi_mod
Jul  6 02:19:43 xen2  usb_common
Jul  6 02:19:43 xen2  
Jul  6 02:19:43 xen2 [20341.129672] CPU: 0 PID: 3557 Comm: 2.hda-0 Not tainted 4.9.0-3-amd64 #1 Debian 4.9.30-2+deb9u2a~test
Jul  6 02:19:43 xen2 [20341.129707] Hardware name: Supermicro X10DRi/X10DRI-T, BIOS 2.1 09/13/2016
Jul  6 02:19:43 xen2 [20341.129786] task: ffff8801664c7100 task.stack: ffffc90048d88000
Jul  6 02:19:43 xen2 [20341.129810] RIP: e030:[<ffffffffc06062d2>] 
Jul  6 02:19:43 xen2  [<ffffffffc06062d2>] nvme_queue_rq+0x692/0x7c2 [nvme]
Jul  6 02:19:43 xen2 [20341.129850] RSP: e02b:ffffc90048d8ba10  EFLAGS: 00010286
Jul  6 02:19:43 xen2 [20341.129872] RAX: 0000000000000000 RBX: 0000000000702000 RCX: ffff880160b25100
Jul  6 02:19:43 xen2 [20341.129900] RDX: 0000000000000000 RSI: 0000000000000200 RDI: 0000000000000200
Jul  6 02:19:43 xen2 [20341.129927] RBP: 0000000000000400 R08: ffff88016350a200 R09: 0000000000000400
Jul  6 02:19:43 xen2 [20341.129955] R10: 0000000000001000 R11: 00000000fffff400 R12: 0000000000000200
Jul  6 02:19:43 xen2 [20341.129982] R13: 0000000000000001 R14: 0000000000001000 R15: ffff880160b25100
Jul  6 02:19:43 xen2 [20341.130071] FS:  0000000000000000(0000) GS:ffff880186a00000(0000) knlGS:ffff880186a00000
Jul  6 02:19:43 xen2 [20341.130103] CS:  e033 DS: 0000 ES: 0000 CR0: 0000000080050033
Jul  6 02:19:43 xen2 [20341.130126] CR2: 00007fc2900959a8 CR3: 000000016e2e5000 CR4: 0000000000042660
Jul  6 02:19:43 xen2 [20341.130154] Stack:
Jul  6 02:19:43 xen2 [20341.130165]  ffff880176e89200
Jul  6 02:19:43 xen2  0000000000001000
Jul  6 02:19:43 xen2  ffff880177cdc300
Jul  6 02:19:43 xen2  ffff88017b3f0002
Jul  6 02:19:43 xen2  
Jul  6 02:19:43 xen2 [20341.130201]  ffff880100001000
Jul  6 02:19:43 xen2  ffff88016f346800
Jul  6 02:19:43 xen2  ffff88016350a240
Jul  6 02:19:43 xen2  0000000000000ff8
Jul  6 02:19:43 xen2  
Jul  6 02:19:43 xen2 [20341.130238]  ffff880176ad6000
Jul  6 02:19:43 xen2  ffff88017bf2ee80
Jul  6 02:19:43 xen2  ffff880176989280
Jul  6 02:19:43 xen2  0000000000000002
Jul  6 02:19:43 xen2  
Jul  6 02:19:43 xen2 [20341.130274] Call Trace:
Jul  6 02:19:43 xen2 [20341.130292]  [<ffffffff81305c52>] ? __blk_mq_run_hw_queue+0x282/0x3d0
Jul  6 02:19:43 xen2 [20341.130319]  [<ffffffff813059be>] ? blk_mq_run_hw_queue+0x6e/0x80
Jul  6 02:19:43 xen2 [20341.130344]  [<ffffffff81307849>] ? blk_mq_flush_plug_list+0x139/0x160
Jul  6 02:19:43 xen2 [20341.131350]  [<ffffffff812fc9dd>] ? blk_flush_plug_list+0xbd/0x230
Jul  6 02:19:43 xen2 [20341.132340]  [<ffffffff812fcf47>] ? blk_finish_plug+0x27/0x40
Jul  6 02:19:43 xen2 [20341.133330]  [<ffffffffc057d9d0>] ? dispatch_rw_block_io+0x7b0/0xac0 [xen_blkback]
Jul  6 02:19:43 xen2 [20341.134376]  [<ffffffff8100122a>] ? xen_hypercall_xen_version+0xa/0x20
Jul  6 02:19:43 xen2 [20341.135358]  [<ffffffff8100122a>] ? xen_hypercall_xen_version+0xa/0x20
Jul  6 02:19:43 xen2 [20341.136327]  [<ffffffffc057e00d>] ? __do_block_io_op+0x32d/0x650 [xen_blkback]
Jul  6 02:19:43 xen2 [20341.137299]  [<ffffffff81605e46>] ? _raw_spin_unlock_irqrestore+0x16/0x20
Jul  6 02:19:43 xen2 [20341.138266]  [<ffffffffc057e7ea>] ? xen_blkif_schedule+0x11a/0x7d0 [xen_blkback]
Jul  6 02:19:43 xen2 [20341.139232]  [<ffffffff816015db>] ? __schedule+0x23b/0x6d0
Jul  6 02:19:43 xen2 [20341.140197]  [<ffffffff810b8d50>] ? prepare_to_wait_event+0xf0/0xf0
Jul  6 02:19:43 xen2 [20341.141157]  [<ffffffffc057e6d0>] ? xen_blkif_be_int+0x30/0x30 [xen_blkback]
Jul  6 02:19:43 xen2 [20341.142118]  [<ffffffff810965d7>] ? kthread+0xd7/0xf0
Jul  6 02:19:43 xen2 [20341.143071]  [<ffffffff81096500>] ? kthread_park+0x60/0x60
Jul  6 02:19:43 xen2 [20341.144012]  [<ffffffff816064f5>] ? ret_from_fork+0x25/0x30
Jul  6 02:19:43 xen2 [20341.144940] Code: 
Jul  6 02:19:43 89  
Jul  6 02:19:43 54  
Jul  6 02:19:43 24  
Jul  6 02:19:43 20  
Jul  6 02:19:43 44  
Jul  6 02:19:43 89  
Jul  6 02:19:43 54  
Jul  6 02:19:43 24  
Jul  6 02:19:43 10  
Jul  6 02:19:43 e8  
Jul  6 02:19:43 2b  
Jul  6 02:19:43 2f  
Jul  6 02:19:43 d3  
Jul  6 02:19:43 c0  
Jul  6 02:19:43 44  
Jul  6 02:19:43 8b  
Jul  6 02:19:43 4c  
Jul  6 02:19:43 24  
Jul  6 02:19:43 28  
Jul  6 02:19:43 49  
Jul  6 02:19:43 89  
Jul  6 02:19:43 c0  
Jul  6 02:19:43 4c  
Jul  6 02:19:43 8b  
Jul  6 02:19:43 58  
Jul  6 02:19:43 10  
Jul  6 02:19:43 8b  
Jul  6 02:19:43 68  
Jul  6 02:19:43 18  
Jul  6 02:19:43 8b  
Jul  6 02:19:43 54  
Jul  6 02:19:43 24  
Jul  6 02:19:43 20  
Jul  6 02:19:43 44  
Jul  6 02:19:43 8b  
Jul  6 02:19:43 54  
Jul  6 02:19:43 24  
Jul  6 02:19:43 10  
Jul  6 02:19:43 e9  
Jul  6 02:19:43 8e  
Jul  6 02:19:43 fd  
Jul  6 02:19:43 ff  
Jul  6 02:19:43 ff  
Jul  6 02:19:43 xen2  <0f> 
Jul  6 02:19:43 0b  
Jul  6 02:19:43 e8  
Jul  6 02:19:43 87  
Jul  6 02:19:43 09  
Jul  6 02:19:43 a7  
Jul  6 02:19:43 c0  
Jul  6 02:19:43 48  
Jul  6 02:19:43 8b  
Jul  6 02:19:43 05  
Jul  6 02:19:43 00  
Jul  6 02:19:43 51  
Jul  6 02:19:43 61  
Jul  6 02:19:43 c1  
Jul  6 02:19:43 e9  
Jul  6 02:19:43 99  
Jul  6 02:19:43 fb  
Jul  6 02:19:43 ff  
Jul  6 02:19:43 ff  
Jul  6 02:19:43 4d  
Jul  6 02:19:43 89  
Jul  6 02:19:43 xen2  
Jul  6 02:19:43 xen2 [20341.147036] RIP 
Jul  6 02:19:43 xen2  [<ffffffffc06062d2>] nvme_queue_rq+0x692/0x7c2 [nvme]
Jul  6 02:19:43 xen2 [20341.147993]  RSP <ffffc90048d8ba10>
Jul  6 02:19:43 xen2 [20341.149243] systemd-journald[425]: Compressed data object 805 -> 736 using LZ4
Jul  6 02:19:43 xen2 [20341.217716] ---[ end trace e8ca579f7f10986e ]---
Jul  6 02:19:43 xen2 [20341.225026] general protection fault: 0000 [#2] SMP
Jul  6 02:19:43 xen2 [20341.225998] Modules linked in:
Jul  6 02:19:43 xen2  xt_physdev
Jul  6 02:19:43 xen2  br_netfilter
Jul  6 02:19:43 xen2  iptable_filter
Jul  6 02:19:43 xen2  xen_netback
Jul  6 02:19:43 xen2  xen_blkback
Jul  6 02:19:43 xen2  netconsole
Jul  6 02:19:43 xen2  configfs
Jul  6 02:19:43 xen2  bridge
Jul  6 02:19:43 xen2  xen_gntdev
Jul  6 02:19:43 xen2  xen_evtchn
Jul  6 02:19:43 xen2  xenfs
Jul  6 02:19:43 xen2  xen_privcmd
Jul  6 02:19:43 xen2  iTCO_wdt
Jul  6 02:19:43 xen2  iTCO_vendor_support
Jul  6 02:19:43 xen2  mxm_wmi
Jul  6 02:19:43 xen2  intel_rapl
Jul  6 02:19:43 xen2  sb_edac
Jul  6 02:19:43 xen2  edac_core
Jul  6 02:19:43 xen2  x86_pkg_temp_thermal
Jul  6 02:19:43 xen2  intel_powerclamp
Jul  6 02:19:43 xen2  coretemp
Jul  6 02:19:43 xen2  crct10dif_pclmul
Jul  6 02:19:43 xen2  crc32_pclmul
Jul  6 02:19:43 xen2  ghash_clmulni_intel
Jul  6 02:19:43 xen2  intel_rapl_perf
Jul  6 02:19:43 xen2  pcspkr
Jul  6 02:19:43 xen2  i2c_i801
Jul  6 02:19:43 xen2  i2c_smbus
Jul  6 02:19:43 xen2  joydev
Jul  6 02:19:43 xen2  ast
Jul  6 02:19:43 xen2  ttm
Jul  6 02:19:43 xen2  drm_kms_helper
Jul  6 02:19:43 xen2  drm
Jul  6 02:19:43 xen2  i2c_algo_bit
Jul  6 02:19:43 xen2  ixgbe
Jul  6 02:19:43 xen2  e1000e
Jul  6 02:19:43 xen2  ptp
Jul  6 02:19:43 xen2  sg
Jul  6 02:19:43 xen2  mdio
Jul  6 02:19:43 xen2  pps_core
Jul  6 02:19:43 xen2  nvme
Jul  6 02:19:43 xen2  nvme_core
Jul  6 02:19:43 xen2  mei_me
Jul  6 02:19:43 xen2  ehci_pci
Jul  6 02:19:43 xen2  ioatdma
Jul  6 02:19:43 xen2  lpc_ich
Jul  6 02:19:43 xen2  ehci_hcd
Jul  6 02:19:43 xen2  mfd_core
Jul  6 02:19:43 xen2  mei
Jul  6 02:19:43 xen2  shpchp
Jul  6 02:19:43 xen2  dca
Jul  6 02:19:43 xen2  wmi
Jul  6 02:19:43 xen2  acpi_power_meter
Jul  6 02:19:43 xen2  8021q
Jul  6 02:19:43 xen2  garp
Jul  6 02:19:43 xen2  mrp
Jul  6 02:19:43 xen2  stp
Jul  6 02:19:43 xen2  llc
Jul  6 02:19:43 xen2  button
Jul  6 02:19:43 xen2  ipmi_si
Jul  6 02:19:43 xen2  ipmi_devintf
Jul  6 02:19:43 xen2  ipmi_msghandler
Jul  6 02:19:43 xen2  drbd
Jul  6 02:19:43 xen2  lru_cache
Jul  6 02:19:43 xen2  sunrpc
Jul  6 02:19:43 xen2  ip_tables
Jul  6 02:19:43 xen2  x_tables
Jul  6 02:19:43 xen2  autofs4
Jul  6 02:19:43 xen2  ext4
Jul  6 02:19:43 xen2  crc16
Jul  6 02:19:43 xen2  jbd2
Jul  6 02:19:43 xen2  fscrypto
Jul  6 02:19:43 xen2  ecb
Jul  6 02:19:43 xen2  mbcache
Jul  6 02:19:43 xen2  raid10
Jul  6 02:19:43 xen2  raid456
Jul  6 02:19:43 xen2  libcrc32c
Jul  6 02:19:43 xen2  crc32c_generic
Jul  6 02:19:43 xen2  async_raid6_recov
Jul  6 02:19:43 xen2  async_memcpy
Jul  6 02:19:43 xen2  async_pq
Jul  6 02:19:43 xen2  async_xor
Jul  6 02:19:43 xen2  xor
Jul  6 02:19:43 xen2  async_tx
Jul  6 02:19:43 xen2  evdev
Jul  6 02:19:43 xen2  hid_generic
Jul  6 02:19:43 xen2  usbhid
Jul  6 02:19:43 xen2  hid
Jul  6 02:19:43 xen2  raid6_pq
Jul  6 02:19:43 xen2  raid0
Jul  6 02:19:43 xen2  multipath
Jul  6 02:19:43 xen2  linear
Jul  6 02:19:43 xen2  bcache
Jul  6 02:19:43 xen2  dm_mod
Jul  6 02:19:43 xen2  raid1
Jul  6 02:19:43 xen2  md_mod
Jul  6 02:19:43 xen2  sd_mod
Jul  6 02:19:43 xen2  crc32c_intel
Jul  6 02:19:43 xen2  aesni_intel
Jul  6 02:19:43 xen2  aes_x86_64
Jul  6 02:19:43 xen2  glue_helper
Jul  6 02:19:43 xen2  lrw
Jul  6 02:19:43 xen2  gf128mul
Jul  6 02:19:43 xen2  ablk_helper
Jul  6 02:19:43 xen2  cryptd
Jul  6 02:19:43 xen2  ahci
Jul  6 02:19:43 xen2  xhci_pci
Jul  6 02:19:43 xen2  libahci
Jul  6 02:19:43 xen2  xhci_hcd
Jul  6 02:19:43 xen2  libata
Jul  6 02:19:43 xen2  usbcore
Jul  6 02:19:43 xen2  scsi_mod
Jul  6 02:19:43 xen2  usb_common
Jul  6 02:19:43 xen2  
Jul  6 02:19:43 xen2 [20341.234422] CPU: 15 PID: 3557 Comm: 2.hda-0 Tainted: G      D         4.9.0-3-amd64 #1 Debian 4.9.30-2+deb9u2a~test
Jul  6 02:19:43 xen2 [20341.235366] Hardware name: Supermicro X10DRi/X10DRI-T, BIOS 2.1 09/13/2016
Jul  6 02:19:43 xen2 [20341.236309] task: ffff8801664c7100 task.stack: ffffc90048d88000
Jul  6 02:19:43 xen2 [20341.237260] RIP: e030:[<ffffffff810b8775>] 
Jul  6 02:19:43 xen2  [<ffffffff810b8775>] __wake_up_common+0x25/0x80
Jul  6 02:19:43 xen2 [20341.238239] RSP: e02b:ffffc90048d8be70  EFLAGS: 00010006
Jul  6 02:19:43 xen2 [20341.239215] RAX: 0000000000000200 RBX: ffffc90048d8bf10 RCX: 0000000000000000
Jul  6 02:19:43 xen2 [20341.240209] RDX: d43d474ac4b99096 RSI: 0000000000000003 RDI: ffffc90048d8bf10
Jul  6 02:19:43 xen2 [20341.241198] RBP: ffffc90048d8bf18 R08: 0000000000000000 R09: 0000000000000000
Jul  6 02:19:43 xen2 [20341.242181] R10: 0000000000007ff0 R11: ffff880176cd3100 R12: 0000000000000200
Jul  6 02:19:43 xen2 [20341.243158] R13: 0000000000000000 R14: 0000000000000003 R15: ffff880160b25100
Jul  6 02:19:43 xen2 [20341.244133] FS:  0000000000000000(0000) GS:ffff880186dc0000(0000) knlGS:ffff880186dc0000
Jul  6 02:19:43 xen2 [20341.245105] CS:  e033 DS: 0000 ES: 0000 CR0: 0000000080050033
Jul  6 02:19:43 xen2 [20341.246074] CR2: 00007f188003c358 CR3: 00000001710aa000 CR4: 0000000000042660
Jul  6 02:19:43 xen2 [20341.247060] Stack:
Jul  6 02:19:43 xen2 [20341.248030]  0000000100000001
Jul  6 02:19:43 xen2  ffffc90048d8bf10
Jul  6 02:19:43 xen2  ffffc90048d8bf08
Jul  6 02:19:43 xen2  0000000000000200
Jul  6 02:19:43 xen2  
Jul  6 02:19:43 xen2 [20341.249028]  0000000000000000
Jul  6 02:19:43 xen2  0000000000000001
Jul  6 02:19:43 xen2  ffff880160b25100
Jul  6 02:19:43 xen2  ffffffff810b91c1
Jul  6 02:19:43 xen2  
Jul  6 02:19:43 xen2 [20341.250092]  ffff8801664c7818
Jul  6 02:19:43 xen2  ffff8801664c7100
Jul  6 02:19:43 xen2  0000000000000000
Jul  6 02:19:43 xen2  ffffffff81074250
Jul  6 02:19:43 xen2  
Jul  6 02:19:43 xen2 [20341.251153] Call Trace:
Jul  6 02:19:43 xen2 [20341.252148]  [<ffffffff810b91c1>] ? complete+0x31/0x40
Jul  6 02:19:43 xen2 [20341.253157]  [<ffffffff81074250>] ? mm_release+0xb0/0x130
Jul  6 02:19:43 xen2 [20341.254155]  [<ffffffff8107b100>] ? do_exit+0x150/0xae0
Jul  6 02:19:43 xen2 [20341.255147]  [<ffffffff81607a57>] ? rewind_stack_do_exit+0x17/0x20
Jul  6 02:19:43 xen2 [20341.256149] Code: 
Jul  6 02:19:43 84  
Jul  6 02:19:43 00  
Jul  6 02:19:43 00  
Jul  6 02:19:43 00  
Jul  6 02:19:43 00  
Jul  6 02:19:43 00  
Jul  6 02:19:43 0f  
Jul  6 02:19:43 1f  
Jul  6 02:19:43 44  
Jul  6 02:19:43 00  
Jul  6 02:19:43 00  
Jul  6 02:19:43 41  
Jul  6 02:19:43 57  
Jul  6 02:19:43 41  
Jul  6 02:19:43 56  
Jul  6 02:19:43 41  
Jul  6 02:19:43 89  
Jul  6 02:19:43 f6  
Jul  6 02:19:43 41  
Jul  6 02:19:43 55  
Jul  6 02:19:43 41  
Jul  6 02:19:43 54  
Jul  6 02:19:43 55  
Jul  6 02:19:43 53  
Jul  6 02:19:43 48  
Jul  6 02:19:43 8d  
Jul  6 02:19:43 6f  
Jul  6 02:19:43 08  
Jul  6 02:19:43 48  
Jul  6 02:19:43 83  
Jul  6 02:19:43 ec  
Jul  6 02:19:43 08  
Jul  6 02:19:43 89  
Jul  6 02:19:43 54  
Jul  6 02:19:43 24  
Jul  6 02:19:43 04  
Jul  6 02:19:43 48  
Jul  6 02:19:43 8b  
Jul  6 02:19:43 57  
Jul  6 02:19:43 08  
Jul  6 02:19:43 48  
Jul  6 02:19:43 39  
Jul  6 02:19:43 d5  
Jul  6 02:19:43 xen2  
Jul  6 02:19:43 8b  
Jul  6 02:19:43 32  
Jul  6 02:19:43 74  
Jul  6 02:19:43 43  
Jul  6 02:19:43 48  
Jul  6 02:19:43 8d  
Jul  6 02:19:43 42  
Jul  6 02:19:43 e8  
Jul  6 02:19:43 4c  
Jul  6 02:19:43 8d  
Jul  6 02:19:43 7e  
Jul  6 02:19:43 e8  
Jul  6 02:19:43 41  
Jul  6 02:19:43 89  
Jul  6 02:19:43 cd  
Jul  6 02:19:43 4d  
Jul  6 02:19:43 89  
Jul  6 02:19:43 c4  
Jul  6 02:19:43 8b  
Jul  6 02:19:43 18  
Jul  6 02:19:43 xen2  
Jul  6 02:19:43 xen2 [20341.258471] RIP 
Jul  6 02:19:43 xen2  [<ffffffff810b8775>] __wake_up_common+0x25/0x80
Jul  6 02:19:43 xen2 [20341.259515]  RSP <ffffc90048d8be70>
Jul  6 02:19:43 xen2 [20341.260551] ---[ end trace e8ca579f7f10986f ]---
Jul  6 02:19:43 xen2 [20341.267055] ------------[ cut here ]------------
Jul  6 02:19:43 xen2 [20341.268090] WARNING: CPU: 15 PID: 3557 at /usr/src/kernel/linux-4.9.30/kernel/exit.c:737 do_exit+0x60/0xae0

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