Re: CGroup Namespaces (v8)

On Fri, Jan 01, 2016 at 12:19:44AM -0800, Dan Williams wrote:

On Tue, Dec 22, 2015 at 8:23 PM,  [off-list ref] wrote:

quoted

Hi,

following is a revised set of the CGroup Namespace patchset which Aditya
Kali has previously sent.  The code can also be found in the cgroupns.v8
branch of

https://git.kernel.org/cgit/linux/kernel/git/sergeh/linux-security.git/

Happy New Year!

I'm hitting both a build and boot regression in -next with these
patches.  The bisect log reports:

git bisect skip f176ae3a5df610e0373c39538cc7744c7788b3df
# bad: [54b39d263704b66cc8006ce8f7dd4743fdabae70] cgroup: cgroup
namespace setns support
git bisect bad 54b39d263704b66cc8006ce8f7dd4743fdabae70
# good: [bf9b3590879afbaa54148d817ed68a0b51180375] sched: new clone
flag CLONE_NEWCGROUP for c
group namespace
git bisect good bf9b3590879afbaa54148d817ed68a0b51180375
# only skipped commits left to test
# possible first bad commit:
[54b39d263704b66cc8006ce8f7dd4743fdabae70] cgroup: cgroup namespa
ce setns support
# possible first bad commit:
[f176ae3a5df610e0373c39538cc7744c7788b3df] cgroup: introduce cgro
up namespaces

Where compiling "f176ae3a5df6"  fails with:

kernel/cgroup.c: In function ‘cgroupns_put’:
kernel/cgroup.c:5956:2: error: implicit declaration of function
‘to_cg_ns’ [-Werror=implicit-f
unction-declaration]
 put_cgroup_ns(to_cg_ns(ns));

Hi,

is it possible you have a bad tree?  Looking at 
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/tree/kernel/cgroup.c?id=refs/tags/next-20151231
to_cg_ns should definately be defined there.

-serge