[Bug 1795453] Re: [SRU] IO's are issued with incorrect Scatter Gather Buffer

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** Tags added: verification-done-xenial

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

Status in linux package in Ubuntu:
Fix Committed
Status in linux source package in Bionic:
Fix Committed
Status in linux source package in Cosmic:
Fix Committed

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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