[CRIU] [PATCH v2 0/3] Create pid_ns helpers as children of criu main task

[Andrei Vagin]

On Fri, Jul 14, 2017 at 03:40:05PM +0300, Kirill Tkhai wrote:
> This patchset makes pid_ns helpers to be childred
> of criu main task. The main goal is to make fail
> path of restore more stable. Now we kill the helpers
> from usernsd, but there is possible a situation,
> that someone was killed without releasing of usernsd
> mutex. This case, we may never destroy pid_ns helpers
> and may hang. Creating them as children of criu main
> task decides such problem: we just kill and wait
> them directly.
>

BTW: may be we need to set PR_SET_PDEATHSIG for them? criu may
segfaulted too.

> https://travis-ci.org/tkhai/criu/builds/253543048
> 
> v2: Make the code more compact
> 
> ---
> 
> Kirill Tkhai (3):
>       pid_ns: Extract functionality of exit of pid_ns helper in function
>       utils: Add sys_clone_unified()
>       ns: Make pid_ns helpers as children of criu main process
> 
> 
>  criu/cr-restore.c         |    4 ++++
>  criu/include/namespaces.h |    1 +
>  criu/include/util.h       |    3 +++
>  criu/namespaces.c         |   49 ++++++++++++++-------------------------------
>  criu/util.c               |   25 ++++++++++++++---------
>  test/zdtm/lib/test.c      |   23 +++++++++++++--------
>  6 files changed, 52 insertions(+), 53 deletions(-)
> 
> --
> Signed-off-by: Kirill Tkhai <ktkhai at virtuozzo.com>