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 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
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
Description: Ubuntu 16.04.1 LTS x86_64
ProblemType: Bug 4.4.0-36- generic 4.4.0-36.55 ature: Ubuntu 4.4.0-36.55-generic 4.4.16 pcmC0D1c' , '/dev/snd/ pcmC0D0c' , '/dev/snd/ pcmC0D0p' , '/dev/snd/ controlC0' , '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: values: Error: [Errno 2] No such file or directory: 'amixer' /dev/mapper/ lxd--vg- swap_1 /vmlinuz- 4.4.0-36- generic root=/dev/ mapper/ hostname- -vg-root ro ersions: restricted- modules- 4.4.0-36- generic N/A backports- modules- 4.4.0-36- generic N/A mbH:bvrVirtualB ox:bd12/ 01/2006: svninnotekGmbH: pnVirtualBox: pvr1.2: rvnOracleCorpor ation:rnVirtual Box:rvr1. 2:cvnOracleCorp oration: ct1:cvr: version: 1.2
DistroRelease: Ubuntu 16.04
Package: linux-image-
ProcVersionSign
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/
Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
Card0.Amixer.
Date: Sun Sep 11 23:10:57 2016
HibernationDevice: RESUME=
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=
RelatedPackageV
linux-
linux-
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:bvninnotekG
dmi.product.name: VirtualBox
dmi.product.
dmi.sys.vendor: innotek GmbH