On Wed, Feb 09, 2022 at 06:53:32AM +0100, Greg KH wrote:
> On Tue, Feb 08, 2022 at 07:24:02PM +0100, Michal Koutný wrote:
> > From: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
> >
> > The cgroup release_agent is called with call_usermodehelper. The function
> > call_usermodehelper starts the release_agent with a full set fo capabilities.
> > Therefore require capabilities when setting the release_agaent.
> >
> > [ Upstream commit 24f6008564183aa120d07c03d9289519c2fe02af ]
> >
> > Reported-by: Tabitha Sable <tabitha.c.sable@xxxxxxxxx>
> > Tested-by: Tabitha Sable <tabitha.c.sable@xxxxxxxxx>
> > Fixes: 81a6a5cdd2c5 ("Task Control Groups: automatic userspace notification of idle cgroups")
> > Cc: stable@xxxxxxxxxxxxxxx # v2.6.24+
> > Signed-off-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
> > Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
> > [mkoutny: Adjust for pre-fs_context, duplicate mount/remount check, drop log messages.]
> > Acked-by: Michal Koutný <mkoutny@xxxxxxxx>
> > ---
> >
> > Hello,
> > FWIW, I'm sharing v4.12 backport of the aforementioned patch (v4.12 is not
> > actual stable but someone may find it useful).
>
> What about 4.19 and 4.14 versions? Those would be useful :)
Ah, it looks like it works there, many thanks for this!
greg k-h
