Public bug reported:
The kernel crashes when the ownership of a file is changed when the
set{u,g}id permission is set within a overlayfs.
I originally found this bug within a nested docker container inside an
lxd container. I then tested this with a overlayfs running directly on
the host.
I have tested this on multiple systems, physical and virtual (virtualbox
and kvm) all produces the same result.
Expected case:
ownership of file with set(u,g)id set is changed.
Actual case:
chown segfaults with kernel error.
Version sig: Ubuntu 4.4.0-36.55-generic 4.4.16
Description: Ubuntu 16.04.1 LTS x86_64
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-36-generic 4.4.0-36.55
ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16
Uname: Linux 4.4.0-36-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version k4.4.0-36-generic.
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path',
'/dev/snd/pcmC0D1c', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p',
'/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
Date: Sun Sep 11 23:10:57 2016
HibernationDevice: RESUME=/dev/mapper/lxd--vg-swap_1
InstallationDate: Installed on 2016-09-09 (2 days ago)
InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb:
Bus 001 Device 002: ID 80ee:0021 VirtualBox USB Tablet
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: innotek GmbH VirtualBox
ProcFB: 0 vboxdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-36-generic
root=/dev/mapper/hostname--vg-root ro
RelatedPackageVersions:
linux-restricted-modules-4.4.0-36-generic N/A
linux-backports-modules-4.4.0-36-generic N/A
linux-firmware 1.157.3
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/01/2006
dmi.bios.vendor: innotek GmbH
dmi.bios.version: VirtualBox
dmi.board.name: VirtualBox
dmi.board.vendor: Oracle Corporation
dmi.board.version: 1.2
dmi.chassis.type: 1
dmi.chassis.vendor: Oracle Corporation
dmi.modalias:
dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr:
dmi.product.name: VirtualBox
dmi.product.version: 1.2
dmi.sys.vendor: innotek GmbH
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug xenial
** Description changed:
The kernel crashes when the ownership of a file is changed when the
set{u,g}id permission is set within a overlayfs.
I originally this bug within a nested docker container inside an lxd
container. I then tested this with a overlayfs running directly on the
host.
I have tested this on multiple systems, physical and virtual (virtualbox
and kvm) all produces the same result.
Expected case:
ownership of file with set(u,g)id set is changed.
Actual case:
chown segfaults with kernel error.
- Version sig: Ubuntu 4.4.9-46.55-generic 4.4.16
+ Version sig: Ubuntu 4.4.0-36.55-generic 4.4.16
Description: Ubuntu 16.04.1 LTS x86_64
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-36-generic 4.4.0-36.55
ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16
Uname: Linux 4.4.0-36-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version
k4.4.0-36-generic.
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path',
'/dev/snd/pcmC0D1c', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p',
'/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
Date: Sun Sep 11 23:10:57 2016
HibernationDevice: RESUME=/dev/mapper/lxd--vg-swap_1
InstallationDate: Installed on 2016-09-09 (2 days ago)
InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb:
- Bus 001 Device 002: ID 80ee:0021 VirtualBox USB Tablet
- Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
+ Bus 001 Device 002: ID 80ee:0021 VirtualBox USB Tablet
+ Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: innotek GmbH VirtualBox
ProcFB: 0 vboxdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-36-generic
root=/dev/mapper/hostname--vg-root ro
RelatedPackageVersions:
- linux-restricted-modules-4.4.0-36-generic N/A
- linux-backports-modules-4.4.0-36-generic N/A
- linux-firmware 1.157.3
+ linux-restricted-modules-4.4.0-36-generic N/A
+ linux-backports-modules-4.4.0-36-generic N/A
+ linux-firmware 1.157.3
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/01/2006
dmi.bios.vendor: innotek GmbH
dmi.bios.version: VirtualBox
dmi.board.name: VirtualBox
dmi.board.vendor: Oracle Corporation
dmi.board.version: 1.2
dmi.chassis.type: 1
dmi.chassis.vendor: Oracle Corporation
dmi.modalias:
dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr:
dmi.product.name: VirtualBox
dmi.product.version: 1.2
dmi.sys.vendor: innotek GmbH
** Description changed:
The kernel crashes when the ownership of a file is changed when the
set{u,g}id permission is set within a overlayfs.
- I originally this bug within a nested docker container inside an lxd
- container. I then tested this with a overlayfs running directly on the
- host.
+ I originally found this bug within a nested docker container inside an
+ lxd container. I then tested this with a overlayfs running directly on
+ the host.
I have tested this on multiple systems, physical and virtual (virtualbox
and kvm) all produces the same result.
Expected case:
ownership of file with set(u,g)id set is changed.
Actual case:
chown segfaults with kernel error.
Version sig: Ubuntu 4.4.0-36.55-generic 4.4.16
Description: Ubuntu 16.04.1 LTS x86_64
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-36-generic 4.4.0-36.55
ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16
Uname: Linux 4.4.0-36-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version
k4.4.0-36-generic.
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path',
'/dev/snd/pcmC0D1c', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p',
'/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
Date: Sun Sep 11 23:10:57 2016
HibernationDevice: RESUME=/dev/mapper/lxd--vg-swap_1
InstallationDate: Installed on 2016-09-09 (2 days ago)
InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb:
Bus 001 Device 002: ID 80ee:0021 VirtualBox USB Tablet
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: innotek GmbH VirtualBox
ProcFB: 0 vboxdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-36-generic
root=/dev/mapper/hostname--vg-root ro
RelatedPackageVersions:
linux-restricted-modules-4.4.0-36-generic N/A
linux-backports-modules-4.4.0-36-generic N/A
linux-firmware 1.157.3
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/01/2006
dmi.bios.vendor: innotek GmbH
dmi.bios.version: VirtualBox
dmi.board.name: VirtualBox
dmi.board.vendor: Oracle Corporation
dmi.board.version: 1.2
dmi.chassis.type: 1
dmi.chassis.vendor: Oracle Corporation
dmi.modalias:
dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr:
dmi.product.name: VirtualBox
dmi.product.version: 1.2
dmi.sys.vendor: innotek GmbH
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1622396
Title:
Chown of file within overlayfs with setuid set crashes kernel
Status in linux package in Ubuntu:
Confirmed
Bug description:
The kernel crashes when the ownership of a file is changed when the
set{u,g}id permission is set within a overlayfs.
I originally found this bug within a nested docker container inside an
lxd container. I then tested this with a overlayfs running directly on
the host.
I have tested this on multiple systems, physical and virtual
(virtualbox and kvm) all produces the same result.
Expected case:
ownership of file with set(u,g)id set is changed.
Actual case:
chown segfaults with kernel error.
Version sig: Ubuntu 4.4.0-36.55-generic 4.4.16
Description: Ubuntu 16.04.1 LTS x86_64
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-36-generic 4.4.0-36.55
ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16
Uname: Linux 4.4.0-36-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version
k4.4.0-36-generic.
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path',
'/dev/snd/pcmC0D1c', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p',
'/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
Date: Sun Sep 11 23:10:57 2016
HibernationDevice: RESUME=/dev/mapper/lxd--vg-swap_1
InstallationDate: Installed on 2016-09-09 (2 days ago)
InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb:
Bus 001 Device 002: ID 80ee:0021 VirtualBox USB Tablet
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: innotek GmbH VirtualBox
ProcFB: 0 vboxdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-36-generic
root=/dev/mapper/hostname--vg-root ro
RelatedPackageVersions:
linux-restricted-modules-4.4.0-36-generic N/A
linux-backports-modules-4.4.0-36-generic N/A
linux-firmware 1.157.3
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/01/2006
dmi.bios.vendor: innotek GmbH
dmi.bios.version: VirtualBox
dmi.board.name: VirtualBox
dmi.board.vendor: Oracle Corporation
dmi.board.version: 1.2
dmi.chassis.type: 1
dmi.chassis.vendor: Oracle Corporation
dmi.modalias:
dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr:
dmi.product.name: VirtualBox
dmi.product.version: 1.2
dmi.sys.vendor: innotek GmbH
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