Public bug reported:
Unprivileged lxc containers fail to start in some instances under vivid:
lxc-start 1448306932.775 ERROR lxc_utils - utils.c:safe_mount:1686 -
Operation not permitted - Failed to mount proc onto
/usr/lib/x86_64-linux-gnu/lxc/proc
lxc-start 1448306932.775 ERROR lxc_conf -
conf.c:lxc_mount_auto_mounts:828 - Operation not permitted - error mounting
proc on /usr/lib/x86_64-linux-gnu/lxc/proc flags 14
The failure is caused by the backport of
7236c85e1be51a9e25ba0f6e087a66ca89605a49 "mnt: Update fs_fully_visible
to test for permanently empty directories." The backport itself is
correct but some of its assumptions are not met to do a change which
happened after 3.19. This causes the directories under /proc/fs to fail
the "directory is permanently empty" test, and if another filesystem is
mounted on top of one of these directories this will cause the mount of
proc in the container to fail. The fix is to bakcport
d443b9fd56e85c0e58d10b75cf5eb38e0b2c4c02 "gut proc_register() a bit" as
well.
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: linux-image-3.19.0-33-generic 3.19.0-33.38
ProcVersionSignature: User Name 3.19.0-33.38-generic 3.19.8-ckt7
Uname: Linux 3.19.0-33-generic x86_64
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Nov 23 21:22 seq
crw-rw---- 1 root audio 116, 33 Nov 23 21:22 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.17.2-0ubuntu1.8
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not
found.
Date: Mon Nov 23 21:24:16 2015
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb: Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
PciMultimedia:
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB:
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-33-generic
root=UUID=63d8816d-53d7-4318-b873-2cfe367b957a ro console=tty1 console=ttyS0
RelatedPackageVersions:
linux-restricted-modules-3.19.0-33-generic N/A
linux-backports-modules-3.19.0-33-generic N/A
linux-firmware 1.143.7
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/01/2011
dmi.bios.vendor: Bochs
dmi.bios.version: Bochs
dmi.chassis.type: 1
dmi.chassis.vendor: Bochs
dmi.modalias:
dmi:bvnBochs:bvrBochs:bd01/01/2011:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-trusty:cvnBochs:ct1:cvr:
dmi.product.name: Standard PC (i440FX + PIIX, 1996)
dmi.product.version: pc-i440fx-trusty
dmi.sys.vendor: QEMU
** Affects: linux (Ubuntu)
Importance: High
Assignee: Seth Forshee (sforshee)
Status: In Progress
** Tags: amd64 apport-bug uec-images vivid
** Description changed:
Unprivileged lxc containers fail to start in some instances under vivid:
- lxc-start 1448306932.775 ERROR lxc_utils - utils.c:safe_mount:1686 -
Operation not permitted - Failed to mount proc onto
/usr/lib/x86_64-linux-gnu/lxc/proc
- lxc-start 1448306932.775 ERROR lxc_conf -
conf.c:lxc_mount_auto_mounts:828 - Operation not permitted - error mounting
proc on /usr/lib/x86_64-linux-gnu/lxc/proc flags 14
+ lxc-start 1448306932.775 ERROR lxc_utils - utils.c:safe_mount:1686 -
Operation not permitted - Failed to mount proc onto
/usr/lib/x86_64-linux-gnu/lxc/proc
+ lxc-start 1448306932.775 ERROR lxc_conf -
conf.c:lxc_mount_auto_mounts:828 - Operation not permitted - error mounting
proc on /usr/lib/x86_64-linux-gnu/lxc/proc flags 14
The failure is caused by the backport of
7236c85e1be51a9e25ba0f6e087a66ca89605a49 "mnt: Update fs_fully_visible
to test for permanently empty directories." The backport itself is
correct but some of its assumptions are not met to do a change which
happened after 3.19. This causes the directories under /proc/fs to fail
- the "directory is permanently empty" test, which causes the mount of
+ the "directory is permanently empty" test, and if another filesystem is
+ mounted on top of one of these directories this will cause the mount of
proc in the container to fail. The fix is to bakcport
d443b9fd56e85c0e58d10b75cf5eb38e0b2c4c02 "gut proc_register() a bit" as
well.
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: linux-image-3.19.0-33-generic 3.19.0-33.38
ProcVersionSignature: User Name 3.19.0-33.38-generic 3.19.8-ckt7
Uname: Linux 3.19.0-33-generic x86_64
AlsaDevices:
- total 0
- crw-rw---- 1 root audio 116, 1 Nov 23 21:22 seq
- crw-rw---- 1 root audio 116, 33 Nov 23 21:22 timer
+ total 0
+ crw-rw---- 1 root audio 116, 1 Nov 23 21:22 seq
+ crw-rw---- 1 root audio 116, 33 Nov 23 21:22 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.17.2-0ubuntu1.8
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211
not found.
Date: Mon Nov 23 21:24:16 2015
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb: Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
PciMultimedia:
-
+
ProcEnviron:
- TERM=xterm
- PATH=(custom, no user)
- XDG_RUNTIME_DIR=<set>
- LANG=en_US.UTF-8
- SHELL=/bin/bash
+ TERM=xterm
+ PATH=(custom, no user)
+ XDG_RUNTIME_DIR=<set>
+ LANG=en_US.UTF-8
+ SHELL=/bin/bash
ProcFB:
-
+
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-33-generic
root=UUID=63d8816d-53d7-4318-b873-2cfe367b957a ro console=tty1 console=ttyS0
RelatedPackageVersions:
- linux-restricted-modules-3.19.0-33-generic N/A
- linux-backports-modules-3.19.0-33-generic N/A
- linux-firmware 1.143.7
+ linux-restricted-modules-3.19.0-33-generic N/A
+ linux-backports-modules-3.19.0-33-generic N/A
+ linux-firmware 1.143.7
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/01/2011
dmi.bios.vendor: Bochs
dmi.bios.version: Bochs
dmi.chassis.type: 1
dmi.chassis.vendor: Bochs
dmi.modalias:
dmi:bvnBochs:bvrBochs:bd01/01/2011:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-trusty:cvnBochs:ct1:cvr:
dmi.product.name: Standard PC (i440FX + PIIX, 1996)
dmi.product.version: pc-i440fx-trusty
dmi.sys.vendor: QEMU
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https://bugs.launchpad.net/bugs/1519106
Title:
Unprivileged lxc container fails to start due to error mounting proc
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