| 2016-08-11 08:53:35 |
Chris van Run |
bug |
|
|
added bug |
| 2016-08-11 08:54:19 |
Chris van Run |
affects |
ubuntu-release-upgrader (Ubuntu) |
cifs-utils (Ubuntu) |
|
| 2016-08-11 09:48:10 |
Chris van Run |
tags |
amd64 apport-bug cifs-utils xenial |
amd64 apport-bug cifs-utils kernel-fixed-upstream kernel-fixed-upstream-4.4.14 xenial |
|
| 2016-08-11 09:48:40 |
Chris van Run |
affects |
cifs-utils (Ubuntu) |
linux (Ubuntu) |
|
| 2016-08-11 10:00:13 |
Brad Figg |
linux (Ubuntu): status |
New |
Incomplete |
|
| 2016-08-11 11:14:07 |
Chris van Run |
linux (Ubuntu): status |
Incomplete |
Confirmed |
|
| 2016-08-15 14:44:49 |
Joseph Salisbury |
linux (Ubuntu): importance |
Undecided |
High |
|
| 2016-08-15 14:45:08 |
Joseph Salisbury |
tags |
amd64 apport-bug cifs-utils kernel-fixed-upstream kernel-fixed-upstream-4.4.14 xenial |
amd64 apport-bug cifs-utils kernel-da-key kernel-fixed-upstream kernel-fixed-upstream-4.4.14 xenial |
|
| 2016-08-16 14:24:18 |
Joseph Salisbury |
tags |
amd64 apport-bug cifs-utils kernel-da-key kernel-fixed-upstream kernel-fixed-upstream-4.4.14 xenial |
amd64 apport-bug cifs-utils kernel-da-key kernel-fixed-upstream kernel-fixed-upstream-4.4.14 performing-bisect xenial |
|
| 2016-08-17 14:25:03 |
Ian Gordon |
bug |
|
|
added subscriber Ian Gordon |
| 2016-08-17 15:59:17 |
Joseph Salisbury |
linux (Ubuntu): assignee |
|
Joseph Salisbury (jsalisbury) |
|
| 2016-08-17 15:59:20 |
Joseph Salisbury |
linux (Ubuntu): status |
Confirmed |
In Progress |
|
| 2016-08-17 15:59:25 |
Joseph Salisbury |
nominated for series |
|
Ubuntu Xenial |
|
| 2016-08-17 15:59:25 |
Joseph Salisbury |
bug task added |
|
linux (Ubuntu Xenial) |
|
| 2016-08-17 15:59:31 |
Joseph Salisbury |
linux (Ubuntu Xenial): importance |
Undecided |
High |
|
| 2016-08-17 15:59:34 |
Joseph Salisbury |
linux (Ubuntu Xenial): status |
New |
In Progress |
|
| 2016-08-17 15:59:38 |
Joseph Salisbury |
linux (Ubuntu Xenial): assignee |
|
Joseph Salisbury (jsalisbury) |
|
| 2016-08-19 07:35:30 |
Chris van Run |
summary |
CIFS client: access problems after updating to kernel 4.4.0-3*-generic |
CIFS client: access problems after updating to kernel 4.4.0-29-generic |
|
| 2016-09-03 10:41:09 |
Walter Mautner |
bug |
|
|
added subscriber Walter Mautner |
| 2016-09-06 12:57:01 |
Seth Forshee |
linux (Ubuntu Xenial): status |
In Progress |
Incomplete |
|
| 2016-09-06 13:25:09 |
Seth Forshee |
bug |
|
|
added subscriber Seth Forshee |
| 2016-09-06 14:35:34 |
Seth Forshee |
description |
Expected: being able to mount subfilesystems via cifs mount.
What happens: permission denied even though there is permission
I am denied access to the subfilesystems on a samba server. The top level filesystem itself is unaffected but dfs links seem to run into 'Operation not permitted' problems. When accessing the subfilesystem on the mount as root it mounts correctly. The standard user is then also able to access the subfilesystem.
This only happens when the client uses kernel 4.4.0-34 (#53). When I revert my client to an older kernel (4.4.0-21) everything works. Using the older kernel the normal user can directly ls into the subfilesystem.
This is bug is very similar to bug #1603719 (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1603719). However, the released fix (in 4.4.0-33.52) does not seem to fix it for cifs.
Extra info:
Ubuntu 16.04.1 LTS
cifs-utils version: 2:6.4-1ubuntu1
Mount options are minimal: sec=krb5,uid=XXXX,cruid=XXX
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.15
ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
Uname: Linux 4.4.0-34-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: KDE
Date: Thu Aug 11 10:32:20 2016
InstallationDate: Installed on 2016-04-28 (104 days ago)
InstallationMedia: Kubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
PackageArchitecture: all
ProcEnviron:
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
Symptom: ubuntu-release-upgrader
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.update-motd.d.91-release-upgrade: [deleted] |
SRU Justification
Impact: A regression in the xenial kernel causes EPERM to be returned when accessing dfs subfilesystems in a cifs mount.
Fix: Upstream cherry pick which uses the appropriate credentials for these automounts.
Regression Potential: The fix involves reverting a sauce patch to fix a similar problem in nfs, but it's replace with a more generic fix which fixes cifs as well. I have tested with both nfs and cifs submounts and confirmed that both work as expected.
---
Expected: being able to mount subfilesystems via cifs mount.
What happens: permission denied even though there is permission
I am denied access to the subfilesystems on a samba server. The top level filesystem itself is unaffected but dfs links seem to run into 'Operation not permitted' problems. When accessing the subfilesystem on the mount as root it mounts correctly. The standard user is then also able to access the subfilesystem.
This only happens when the client uses kernel 4.4.0-34 (#53). When I revert my client to an older kernel (4.4.0-21) everything works. Using the older kernel the normal user can directly ls into the subfilesystem.
This is bug is very similar to bug #1603719 (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1603719). However, the released fix (in 4.4.0-33.52) does not seem to fix it for cifs.
Extra info:
Ubuntu 16.04.1 LTS
cifs-utils version: 2:6.4-1ubuntu1
Mount options are minimal: sec=krb5,uid=XXXX,cruid=XXX
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.15
ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
Uname: Linux 4.4.0-34-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: KDE
Date: Thu Aug 11 10:32:20 2016
InstallationDate: Installed on 2016-04-28 (104 days ago)
InstallationMedia: Kubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
PackageArchitecture: all
ProcEnviron:
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
Symptom: ubuntu-release-upgrader
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.update-motd.d.91-release-upgrade: [deleted] |
|
| 2016-09-06 14:37:52 |
Seth Forshee |
linux (Ubuntu Xenial): status |
Incomplete |
In Progress |
|
| 2016-09-06 14:51:39 |
Tim Gardner |
linux (Ubuntu Xenial): status |
In Progress |
Fix Committed |
|
| 2016-09-06 14:51:47 |
Tim Gardner |
nominated for series |
|
Ubuntu Yakkety |
|
| 2016-09-06 14:51:47 |
Tim Gardner |
bug task added |
|
linux (Ubuntu Yakkety) |
|
| 2016-09-06 14:52:39 |
Tim Gardner |
linux (Ubuntu Yakkety): status |
In Progress |
Fix Released |
|
| 2016-09-19 14:24:10 |
Launchpad Janitor |
linux (Ubuntu Xenial): status |
Fix Committed |
Fix Released |
|
