[CRIU] A few network related tests are failing

[Adrian Reber]

On Thu, Nov 01, 2018 at 09:56:29AM -0700, Andrei Vagin wrote:
> On Mon, Oct 29, 2018 at 08:56:17PM +0100, Adrian Reber wrote:
> > On Mon, Oct 29, 2018 at 05:25:50PM +0100, Adrian Reber wrote:
> > > On one of my test systems some network related tests are failing:
> > > 
> > > # ./zdtm.py run -t zdtm/static/socket-tcp6-closed -t zdtm/static/socket-tcp4v6-closed -t zdtm/static/socket-tcp-syn-sent -t zdtm/static/netns-nf --keep-going
> > > 
> > > All of those tests either fail with something like:
> > > 
> > > tail: cannot open 'zdtm/static/socket-tcp6-closed.out' for reading: No such file or directory
> > > 
> > > or:
> > > 
> > > ./netns-nf --pidfile=netns-nf.pid --outfile=netns-nf.out --filename=netns-nf.test
> > > The test failed (0, 1)
> > > make: *** [Makefile:385: netns-nf.pid] Error 1
> > >  Test zdtm/static/netns-nf FAIL at ['make', '--no-print-directory', '-C', 'zdtm/static', 'netns-nf.pid'] 
> > > Test output: ================================
> > > iptables v1.6.2: can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
> > > Perhaps iptables or your kernel needs to be upgraded.
> > > 16:21:51.941:     4: ERR: netns-nf.c:21: Can't set input rule (errno = 2 (No such file or directory))
> > > 16:21:51.941:     3: ERR: test.c:316: Test exited unexpectedly with code 255
> > > 
> > > All of those tests can fail with the iptables error or
> > > with the tail error. I think this is not a real test
> > > error but maybe timing related or something like that.
> > > 
> > > It is on a 4.18 kernel and all other tests in zdtm are working.
> > > 
> > > Any recommendations how to fix this. Where to look?
> > 
> > So I fixed all of the iptables related error by 'git clean -xdf'. It
> > seems the tests in namespaces were using old binaries.
> > 
> > Now only zdtm/static/socket-tcp6-closed and
> > zdtm/static/socket-tcp4v6-closed are failing with:
> 
> Hi Adrian,
> 
> Could you run this command
> 
> strace -s 256 -f -o strace.log python test/zdtm.py run -t zdtm/static/socket-tcp6-closed --iter 0
> 
> and attach strace.log

https://lisas.de/~adrian/strace.log

This is with python3. It works with python2. Better: It works with an
unversioned python binary which python2 on my system.

		Adrian