** Tags added: kernel-bug-exists-upstream
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1629205
Title:
regression: with linux-image-4.4.0-38-generic autofs tries to acess
folders as root instead of the user
Status in linux package in Ubuntu:
Confirmed
Bug description:
Running with linux-image-4.4.0-38-generic autofs is not working
properly anymore: when I try to access a autofs-monitored folder as
normal user "joe" the environment variable $AUTOFS_USER inside the
auto mounter map script is set to "root" instead of the user "joe".
A little background information: in our setup the autofs master map
/etc/auto.master contains a line:
/mnt/cifs /etc/auto.cifs-shares --timeout=300 --verbose
The script /etc/auto.cifs-shares contains for debugging purposes the
lines:
DEBUG=true
$DEBUG && logger -p debug -- "$0: running 'env|grep AUTOFS':"
$DEBUG && logger -p debug -- "$(env|grep AUTOFS)"
and
if test "$1" = "$AUTOFS_USER" ; then
## First generate automount map
[..]
else
logger -p debug -- "$0: Error: User '$AUTOFS_USER' tried to access
wrong directory '$1'"
fi
Which yields to the following errors in the logs:
Sep 29 17:03:20 pcXXXXXX root[7613]: AUTOFS_SHOST=pc203re3
AUTOFS_HOME=/root
AUTOFS_GID=0
AUTOFS_UID=0
AUTOFS_GROUP=root
AUTOFS_USER=root
Sep 29 17:03:20 pcXXXXXX root[7614]: /etc/auto.cifs-shares: Error: User
'root' tried to access wrong directory 'joe'
Sep 29 17:03:20 pcXXXXXX automount[7557]: lookup(program): lookup for joe
failed
Sep 29 17:03:20 pcXXXXXX automount[7557]: failed to mount /mnt/cifs/joe
So for some reason autofs with this kernel gets the environment variables
wrong.
Running an older Kernel like linux-image-4.4.0-36-generic does not show this
problem and the cifs shares work as expected.
other Info:
lsb_release -rd
Description: Ubuntu 16.04.1 LTS
Release: 16.04
uname -r
4.4.0-38-generic
If you need any further info or testing, please let me know.
Thanks,
Robert Euhus
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-38-generic 4.4.0-38.57
ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19
Uname: Linux 4.4.0-38-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: euhus 1711 F.... pulseaudio
CurrentDesktop: GNOME
Date: Fri Sep 30 09:36:31 2016
HibernationDevice: RESUME=UUID=1aae5293-ed3d-4dae-a8b5-54d831262f4a
IwConfig:
lo no wireless extensions.
enp0s31f6 no wireless extensions.
MachineType: Dell Inc. OptiPlex 5040
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-38-generic
root=UUID=adae86bf-dc79-4962-aa5f-41a1a037c8ec ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.4.0-38-generic N/A
linux-backports-modules-4.4.0-38-generic N/A
linux-firmware 1.157.3
RfKill:
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/15/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.2.7
dmi.board.name: 0R790T
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 3
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvr1.2.7:bd01/15/2016:svnDellInc.:pnOptiPlex5040:pvr:rvnDellInc.:rn0R790T:rvrA00:cvnDellInc.:ct3:cvr:
dmi.product.name: OptiPlex 5040
dmi.sys.vendor: Dell Inc.
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