[CFT][PATCH 00/10] Making new mounts of proc and sysfs as safe as bind mounts (take 2)

Richard Weinberger richard at nod.at
Thu May 28 19:36:18 UTC 2015

Am 28.05.2015 um 16:08 schrieb Serge Hallyn:
> Quoting Andy Lutomirski (luto at amacapital.net):
>> On Fri, May 22, 2015 at 10:39 AM, Eric W. Biederman
>> <ebiederm at xmission.com> wrote:
>>> I had hoped to get some Tested-By's on that patch series.
>> Sorry, I've been totally swamped.
>> I suspect that Sandstorm is okay, but I haven't had a chance to test
>> it for real.  Sandstorm makes only limited use of proc and sysfs in
>> containers, but I'll see if I can test it for real this weekend.
> Testing this with unprivileged containers, I get
> lxc-start: conf.c: lxc_mount_auto_mounts: 808 Operation not permitted - error mounting sysfs on /usr/lib/x86_64-linux-gnu/lxc/sys/devices/virtual/net flags 0

FWIW, it breaks also libvirt-lxc:
Error: internal error: guest failed to start: Failed to re-mount /proc/sys on /proc/sys flags=1021: Operation not permitted


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