** Changed in: linux (Ubuntu)
       Status: Confirmed => In Progress

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https://bugs.launchpad.net/bugs/1795453

Title:
  [SRU] IO's are issued with incorrect Scatter Gather Buffer

Status in linux package in Ubuntu:
  In Progress

Bug description:
  [Impact]
  We have observed that OS is sending the IO's (SCSI Read/Write) with incorrect 
Scatter Gather Buffer address .

  i.e

   OS is sending the IO with 64 bit Scatter Gather Buffer address , such
  that if we add the length with buffer address then it causes the roll
  over .

  Here is the data we captured in our driver (Printed the SGE details
  which was sent by OS)

  sgl_ptr->Address = fffffffffffff000
  [14547.313240]
                  sgl_ptr->Length = 1000
  [14547.313241]
                  sge_count = 18
  [14547.313242]
                  cmd->index = 9d9

  Note : This issue is observed only when virtualization is enabled

  Product : Broadcom (LSI) Megaraid H840 controller

  
  [Test Case]
  Steps found in comment #60
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1795453/comments/60

  
  [Regression Potential]

  The patches in Comment #59 have been accepted upstream.

  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1795453/comments/59


  [Other Info]

  Product : Broadcom (LSI) Megaraid H840 controller
  ---
  ProblemType: Bug
  AlsaDevices:
   total 0
   crw-rw----+ 1 root audio 116,  1 Oct 12 16:35 seq
   crw-rw----+ 1 root audio 116, 33 Oct 12 16:35 timer
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
  ApportVersion: 2.20.9-0ubuntu7.4
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 
'arecord'
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', 
'/dev/snd/timer'] failed with exit code 1:
  DistroRelease: Ubuntu 18.04
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
  MachineType: Dell Inc. PowerEdge R7415
  Package: linux (not installed)
  PciMultimedia:

  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 mgadrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-8-generic 
root=UUID=43e89410-c7ff-11e8-9229-d094661013d8 ro
  ProcVersionSignature: Ubuntu 4.18.0-8.9~18.04.1-generic 4.18.7
  RelatedPackageVersions:
   linux-restricted-modules-4.18.0-8-generic N/A
   linux-backports-modules-4.18.0-8-generic  N/A
   linux-firmware                            1.173.1
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
  Tags:  bionic uec-images
  Uname: Linux 4.18.0-8-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lxd plugdev sudo
  _MarkForUpload: True
  dmi.bios.date: 09/07/2018
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.6.2
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 23
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr1.6.2:bd09/07/2018:svnDellInc.:pnPowerEdgeR7415:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct23:cvr:
  dmi.product.family: PowerEdge
  dmi.product.name: PowerEdge R7415
  dmi.product.sku: SKU=NotProvided;ModelName=PowerEdge R7415
  dmi.sys.vendor: Dell Inc.
  ---
  ProblemType: Bug
  AlsaDevices:
   total 0
   crw-rw----+ 1 root audio 116,  1 Oct 12 16:35 seq
   crw-rw----+ 1 root audio 116, 33 Oct 12 16:35 timer
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
  ApportVersion: 2.20.9-0ubuntu7.4
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 
'arecord'
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', 
'/dev/snd/timer'] failed with exit code 1:
  DistroRelease: Ubuntu 18.04
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
  MachineType: Dell Inc. PowerEdge R7415
  Package: linux (not installed)
  PciMultimedia:

  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 mgadrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-8-generic 
root=UUID=43e89410-c7ff-11e8-9229-d094661013d8 ro
  ProcVersionSignature: Ubuntu 4.18.0-8.9~18.04.1-generic 4.18.7
  RelatedPackageVersions:
   linux-restricted-modules-4.18.0-8-generic N/A
   linux-backports-modules-4.18.0-8-generic  N/A
   linux-firmware                            1.173.1
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
  Tags:  bionic uec-images
  Uname: Linux 4.18.0-8-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lxd plugdev sudo
  _MarkForUpload: True
  dmi.bios.date: 09/07/2018
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.6.2
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 23
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr1.6.2:bd09/07/2018:svnDellInc.:pnPowerEdgeR7415:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct23:cvr:
  dmi.product.family: PowerEdge
  dmi.product.name: PowerEdge R7415
  dmi.product.sku: SKU=NotProvided;ModelName=PowerEdge R7415
  dmi.sys.vendor: Dell Inc.
  ---
  ProblemType: Bug
  ApportVersion: 2.20.9-0ubuntu7.4
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', 
'/dev/snd/timer'] failed with exit code 1:
  DistroRelease: Ubuntu 18.04
  InstallationDate: Installed on 2018-09-20 (25 days ago)
  InstallationMedia: Ubuntu-Server 18.04 LTS "Bionic Beaver" - Release amd64 
(20180426)
  IwConfig:
   lo        no wireless extensions.

   eno2      no wireless extensions.

   eno1      no wireless extensions.
  MachineType: Dell Inc. PowerEdge R7415
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 mgadrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-36-generic 
root=UUID=0fdc9101-73c3-4eec-9136-4384e760b449 ro
  ProcVersionSignature: Ubuntu 4.15.0-36.39-generic 4.15.18
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No 
PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-4.15.0-36-generic N/A
   linux-backports-modules-4.15.0-36-generic  N/A
   linux-firmware                             1.173.1
  RfKill:

  Tags:  bionic
  Uname: Linux 4.15.0-36-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

  _MarkForUpload: True
  dmi.bios.date: 09/07/2018
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.6.2
  dmi.board.name: 065PKD
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 23
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr1.6.2:bd09/07/2018:svnDellInc.:pnPowerEdgeR7415:pvr:rvnDellInc.:rn065PKD:rvrA00:cvnDellInc.:ct23:cvr:
  dmi.product.family: PowerEdge
  dmi.product.name: PowerEdge R7415
  dmi.sys.vendor: Dell Inc.

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