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[Bug 1596635] Re: KVM system crashes after starting guest

 

This bug was fixed in the package linux - 4.4.0-30.49

---------------
linux (4.4.0-30.49) xenial; urgency=low

  [ Kamal Mostafa ]

  * Release Tracking Bug
    - LP: #1597897

  * FCP devices are not detected correctly nor deterministically (LP: #1567602)
    - scsi_dh_alua: Disable ALUA handling for non-disk devices
    - scsi_dh_alua: Use vpd_pg83 information
    - scsi_dh_alua: improved logging
    - scsi_dh_alua: sanitze sense code handling
    - scsi_dh_alua: use standard logging functions
    - scsi_dh_alua: return standard SCSI return codes in submit_rtpg
    - scsi_dh_alua: fixup description of stpg_endio()
    - scsi_dh_alua: use flag for RTPG extended header
    - scsi_dh_alua: use unaligned access macros
    - scsi_dh_alua: rework alua_check_tpgs() to return the tpgs mode
    - scsi_dh_alua: simplify sense code handling
    - scsi: Add scsi_vpd_lun_id()
    - scsi: Add scsi_vpd_tpg_id()
    - scsi_dh_alua: use scsi_vpd_tpg_id()
    - scsi_dh_alua: Remove stale variables
    - scsi_dh_alua: Pass buffer as function argument
    - scsi_dh_alua: separate out alua_stpg()
    - scsi_dh_alua: Make stpg synchronous
    - scsi_dh_alua: call alua_rtpg() if stpg fails
    - scsi_dh_alua: switch to scsi_execute_req_flags()
    - scsi_dh_alua: allocate RTPG buffer separately
    - scsi_dh_alua: Use separate alua_port_group structure
    - scsi_dh_alua: use unique device id
    - scsi_dh_alua: simplify alua_initialize()
    - revert commit a8e5a2d593cb ("[SCSI] scsi_dh_alua: ALUA handler attach should
      succeed while TPG is transitioning")
    - scsi_dh_alua: move optimize_stpg evaluation
    - scsi_dh_alua: remove 'rel_port' from alua_dh_data structure
    - scsi_dh_alua: Use workqueue for RTPG
    - scsi_dh_alua: Allow workqueue to run synchronously
    - scsi_dh_alua: Add new blacklist flag 'BLIST_SYNC_ALUA'
    - scsi_dh_alua: Recheck state on unit attention
    - scsi_dh_alua: update all port states
    - scsi_dh_alua: Send TEST UNIT READY to poll for transitioning
    - scsi_dh_alua: do not fail for unknown VPD identification

linux (4.4.0-29.48) xenial; urgency=low

  [ Kamal Mostafa ]

  * Release Tracking Bug
    - LP: #1597015

  * Wireless hotkey fails on Dell XPS 15 9550 (LP: #1589886)
    - intel-hid: new hid event driver for hotkeys
    - intel-hid: fix incorrect entries in intel_hid_keymap
    - intel-hid: allocate correct amount of memory for private struct
    - intel-hid: add a workaround to ignore an event after waking up from S4.
    - [Config] CONFIG_INTEL_HID_EVENT=m

  * cgroupfs mounts can hang (LP: #1588056)
    - Revert "UBUNTU: SAUCE: (namespace) mqueue: Super blocks must be owned by the
      user ns which owns the ipc ns"
    - Revert "UBUNTU: SAUCE: kernfs: Do not match superblock in another user
      namespace when mounting"
    - Revert "UBUNTU: SAUCE: cgroup: Use a new super block when mounting in a
      cgroup namespace"
    - (namespace) bpf: Use mount_nodev not mount_ns to mount the bpf filesystem
    - (namespace) bpf, inode: disallow userns mounts
    - (namespace) ipc: Initialize ipc_namespace->user_ns early.
    - (namespace) vfs: Pass data, ns, and ns->userns to mount_ns
    - SAUCE: (namespace) Sync with upstream s_user_ns patches
    - (namespace) kernfs: The cgroup filesystem also benefits from SB_I_NOEXEC
    - (namespace) ipc/mqueue: The mqueue filesystem should never contain
      executables

  * KVM system crashes after starting guest (LP: #1596635)
    - xhci: Cleanup only when releasing primary hcd

  * Upstream patch "crypto: vmx - IV size failing on skcipher API" for Ubuntu
    16.04 (LP: #1596557)
    - crypto: vmx - IV size failing on skcipher API

  * [Bug]tpm initialization fails on x86 (LP: #1596469)
    - tpm_crb: drop struct resource res from struct crb_priv
    - tpm_crb: fix mapping of the buffers

  * Device shutdown notification for CAPI Flash cards (LP: #1592114)
    - cxlflash: Fix regression issue with re-ordering patch
    - cxlflash: Fix to drain operations from previous reset
    - cxlflash: Add device dependent flags
    - cxlflash: Shutdown notify support for CXL Flash cards

  * scsi-modules udeb should include pm80xx (LP: #1595628)
    - [Config] Add pm80xx scsi driver to d-i

  * Sync up latest relevant upstream bug fixes (LP: #1594871)
    - SAUCE: (noup) Update zfs to 0.6.5.6-0ubuntu10

  * Cannot compile module tda10071 (LP: #1592531)
    - [media] tda10071: Fix dependency to REGMAP_I2C

  * lsvpd doesn't show correct location code for devices attached to a CAPI card
    (LP: #1594847)
    - cxl: Make vPHB device node match adapter's

  * enable CRC32 and AES ARM64 by default or as module (LP: #1594455)
    - [Config] Enable arm64 AES and CRC32 crypto

  * VMX kernel crypto module exhibits poor performance in Ubuntu 16.04
    (LP: #1592481)
    - crypto: vmx - comply with ABIs that specify vrsave as reserved.
    - crypto: vmx - Fix ABI detection
    - crypto: vmx - Increase priority of aes-cbc cipher

  * build squashfs into xenial kernels by default (LP: #1593134)
    - [Config] CONFIG_SQUASHFS=y

  * Restore irqfd fast path for PPC (LP: #1592809)
    - KVM: PPC: Book3S HV: Re-enable XICS fast path for irqfd-generated interrupts

  * Unable to start guests with memballoon default. (LP: #1592042)
    - virtio_balloon: fix PFN format for virtio-1

  * Key 5 automatically pressed on some Logitech wireless keyboards
    (LP: #1579190)
    - HID: core: prevent out-of-bound readings

  * ZFS: Running ztest repeatedly for long periods of time eventually results in
    "zdb: can't open 'ztest': No such file or directory" (LP: #1587686)
    - Fix ztest truncated cache file

  * STC840.20:Alpine:alp7fp1:Ubuntu 16.04, BlueFin (SAN) EEH 6 times during boot
    then disabled SRC BA188002:b0314a_1612.840 (LP: #1587316)
    - lpfc: Fix DMA faults observed upon plugging loopback connector

 -- Kamal Mostafa <kamal@xxxxxxxxxxxxx>  Thu, 30 Jun 2016 12:52:15 -0700

** Changed in: linux (Ubuntu)
       Status: Triaged => Fix Released

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https://bugs.launchpad.net/bugs/1596635

Title:
  KVM system crashes after starting guest

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Fix Committed

Bug description:
  == Comment: #0 - Chanh H. Nguyen - 2016-06-25 00:24:28 ==
  We have Ubuntun 16.04.1 version on our SuperMicro system and some of the virtual packages installed. Define a guest with a pci passthrough is fine but then system crashes at xhci_irq+0x1bc/0xf50 after we start the guest....

  7c:mon> e
  cpu 0x7c: Vector: 300 (Data Access) at [c000001e1b80f760]
      pc: c00000000088217c: xhci_irq+0x1bc/0xf50
      lr: c000000000882050: xhci_irq+0x90/0xf50
      sp: c000001e1b80f9e0
     msr: 9000000102009033
     dar: 28
   dsisr: 40000000
    current = 0xc000001e1bc82a20
    paca    = 0xc000000007b89a00	 softe: 0	 irq_happened: 0x01
      pid   = 4026, comm = libvirtd
  7c:mon> t
  [c000001e1b80fb00] c00000000080ebb0 usb_hcd_irq+0x50/0xa0
  [c000001e1b80fb30] c00000000082af58 usb_hcd_pci_remove+0x68/0x1c0
  [c000001e1b80fb70] c00000000088a118 xhci_pci_remove+0x78/0xb0
  [c000001e1b80fba0] c0000000005e54b0 pci_device_remove+0x70/0x110
  [c000001e1b80fbe0] c0000000006d1550 __device_release_driver+0xc0/0x190
  [c000001e1b80fc10] c0000000006d1660 device_release_driver+0x40/0x70
  [c000001e1b80fc40] c0000000006cf860 unbind_store+0x170/0x1b0
  [c000001e1b80fc80] c0000000006ce1d4 drv_attr_store+0x64/0xa0
  [c000001e1b80fcc0] c0000000003978d0 sysfs_kf_write+0x80/0xb0
  [c000001e1b80fd00] c0000000003967e8 kernfs_fop_write+0x188/0x200
  [c000001e1b80fd50] c0000000002e126c __vfs_write+0x6c/0xe0
  [c000001e1b80fd90] c0000000002e1fa0 vfs_write+0xc0/0x230
  [c000001e1b80fde0] c0000000002e2fdc SyS_write+0x6c/0x110
  [c000001e1b80fe30] c000000000009204 system_call+0x38/0xb4
  --- Exception: c01 (System Call) at 00003fff7f6e6708
  SP (3fff7abfd520) is in userspace
  7c:mon> r
  R00 = c000000000882050   R16 = 00003fff7a400000
  R01 = c000001e1b80f9e0   R17 = c000000000df4200
  R02 = c0000000015b4200   R18 = c000000000b84200
  R03 = d000080081560024   R19 = c000000000de4200
  R04 = c000000004880000   R20 = 0000000000000001
  R05 = c000000004884000   R21 = 00003fff5400565d
  R06 = c000000004884000   R22 = 00003fff5875aa80
  R07 = 000000000000003e   R23 = 00003fff7fa914e0
  R08 = 0000000000000000   R24 = 00003fff7fa90b90
  R09 = 0000000000000006   R25 = c000000000df4200
  R10 = 0000000000000000   R26 = c000001e1b80fe00
  R11 = 0000000000000006   R27 = c000001e3a2d1698
  R12 = c000000000881fc0   R28 = c000000001550f98
  R13 = c000000007b89a00   R29 = c000000004880260
  R14 = 0000000000000000   R30 = c0000000048802ac
  R15 = 0000000000000000   R31 = c000000004880000
  pc  = c00000000088217c xhci_irq+0x1bc/0xf50
  cfar= c000000000008468 slb_miss_realmode+0x50/0x78
  lr  = c000000000882050 xhci_irq+0x90/0xf50
  msr = 9000000102009033   cr  = 28028882
  ctr = c000000000881fc0   xer = 0000000000000000   trap =  300
  dar = 0000000000000028   dsisr = 40000000
  7c:mon> d c000000000b000f0
  c000000000b000f0 4c696e7578207665 7273696f6e20342e  |Linux version 4.|
  c000000000b00100 342e302d32342d67 656e657269632028  |4.0-24-generic (|
  c000000000b00110 6275696c64644062 6f7330312d707063  |buildd@bos01-ppc|
  c000000000b00120 3634656c2d303233 2920286763632076  |64el-023) (gcc v|

  == Comment: #9 - Gabriel Krisman Bertazi  - 2016-06-27 08:43:33 ==

  (In reply to comment #0)
  > We have Ubuntun 16.04.1 version on our SuperMicro system and some of the
  > virtual packages installed. Define a guest with a pci passthrough is fine
  > but then system crashes at xhci_irq+0x1bc/0xf50 after we start the guest....
  > 
  > 7c:mon> e
  > cpu 0x7c: Vector: 300 (Data Access) at [c000001e1b80f760]
  >     pc: c00000000088217c: xhci_irq+0x1bc/0xf50
  >     lr: c000000000882050: xhci_irq+0x90/0xf50
  >     sp: c000001e1b80f9e0
  >    msr: 9000000102009033
  >    dar: 28
  >  dsisr: 40000000
  >   current = 0xc000001e1bc82a20
  >   paca    = 0xc000000007b89a00	 softe: 0	 irq_happened: 0x01
  >     pid   = 4026, comm = libvirtd

  Hi,

  From a quick look, it seems you are missing this commit:

  commit 27a41a83ec54d0edfcaf079310244e7f013a7701
  Author: Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxxxxxxx>
  Date:   Wed Jun 1 18:09:07 2016 +0300

      xhci: Cleanup only when releasing primary hcd

  ==

  Canonical,

  Please backport to 16.04.01

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