[CRIU] [PATCH v4 0/3] net: Create child with CLONE_VM in prepare_net_namespaces()

[Kirill Tkhai]

(This was a single patch in v2)
(Differs to v3 in patch 3)

The main problem, decided these patches, is that create_net_ns()
calls functions, which alloc memory using xmalloc(). So, when
it's called from child after clone(), this memory isn't seen
in parent. Patch 3 fixes that using CLONE_VM argument of clone().

Patch 1 is eye-found problem with mixing "return" and "exit"
in prepare_userns_creds().

Patch 2 is new test, which fails without patch 3 applied.

When "[PATCH RFC] namespaces: use CLONE_VFORK with CLONE_VM when it is possible"
is in tree, I'll rebase patch 3 on clone_nosan().

---

Kirill Tkhai (3):
      ns: Fix return collison in prepare_userns_creds()
      zdtm: Add userns02 test
      net: Create child with CLONE_VM in prepare_net_namespaces()


 criu/include/namespaces.h      |    1 +
 criu/namespaces.c              |    4 ++--
 criu/net.c                     |   31 ++++++++++++++++++++++---------
 test/zdtm/static/Makefile      |    2 ++
 test/zdtm/static/userns01.c    |    8 ++++++--
 test/zdtm/static/userns02.c    |    1 +
 test/zdtm/static/userns02.desc |    1 +
 7 files changed, 35 insertions(+), 13 deletions(-)
 create mode 120000 test/zdtm/static/userns02.c
 create mode 120000 test/zdtm/static/userns02.desc

--
Signed-off-by: Kirill Tkhai <ktkhai at virtuozzo.com>