[CRIU] [PATCH 0/4] c/r non-dev net syctls

[Andrew Vagin]

This patch set killed zdtm.openvz.org:

time:           Thu 30 Jun 2016 06:01:26 PM CEST
cmdline:        BOOT_IMAGE=/vmlinuz-4.5.4-300.fc24.x86_64
root=/dev/mapper/fedora-root ro rd.lvm.lv=fedora/swap
rd.lvm.lv=fedora/root debug console=ttyS0,115200 console=tty0
crashkernel=128M LANG=en_US.UTF-8
abrt_version:   2.8.0
backtrace:      BUG: Bad rss-counter state mm:ffff8800047d3b80 idx:1
val:-1
hostname:       zdtm.openvz.org
kernel:         4.5.4-300.fc24.x86_64
last_occurrence: 1467302486
not-reportable: The backtrace does not contain enough meaningful
function frames to be reported. It is annoying but it does not necessary
signalize a problem with your computer. ABRT will not allow you to
create a report in a bug tracking system but you can contact kernel
maintainers via e-mail.
pkg_arch:       x86_64
pkg_epoch:      0
pkg_name:       kernel-core
pkg_release:    300.fc24
pkg_version:    4.5.4
runlevel:       N 3



On Thu, Jun 30, 2016 at 06:52:16PM +0300, Pavel Tikhomirov wrote:
> This is a first try to migrate /proc/sys/net static sysctls -
> the ones on netns but not per-device. The same way can be applyed
> to all other static sysctls, but they need to be put on proper
> namespace image.
> 
> I added full path to sysctl entry in protobuf as it is easier than
> hardcoding these entries in code, and I lookup them just before dump.
> 
> Actually the test is not yet full as we need to find the right
> limits for a bunch of sysctls, now I use 0-default range for all,
> so some "high" values will not get in.
> 
> /proc/sys/net/netfilter/nf_log/xx sysctls are hard to set - see
> patch 2/4 so skiping it for now, might need ms kernel fix.
> 
> https://jira.sw.ru/browse/PSBM-48397
> 
> Pavel Tikhomirov (4):
>   sysctl: append '\0' in sysctl_read_char
>   net/sysctl: c/r all except *.conf.* and *.neigh.*
>   zdtm: add irand_range helper and use it in netns-dev test
>   zdtm/sysctls: test all net.xxx except conf and neigh
> 
>  criu/include/sysctl.h               |  16 ++
>  criu/net.c                          | 211 +++++++++++++++++
>  criu/sysctl.c                       | 125 +++++++++-
>  images/netdev.proto                 |  14 +-
>  images/sysctl.proto                 |   5 +
>  test/zdtm/lib/Makefile              |   2 +-
>  test/zdtm/lib/randrange.c           |  36 +++
>  test/zdtm/lib/randrange.h           |  13 ++
>  test/zdtm/static/Makefile           |   1 +
>  test/zdtm/static/netns-dev.c        |  46 +---
>  test/zdtm/static/netns-sysctls.c    | 442 ++++++++++++++++++++++++++++++++++++
>  test/zdtm/static/netns-sysctls.desc |   1 +
>  12 files changed, 867 insertions(+), 45 deletions(-)
>  create mode 100644 test/zdtm/lib/randrange.c
>  create mode 100644 test/zdtm/lib/randrange.h
>  create mode 100644 test/zdtm/static/netns-sysctls.c
>  create mode 100644 test/zdtm/static/netns-sysctls.desc
> 
> -- 
> 2.5.5
> 
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