Comment 8 for bug 1194533

I believe that the setup.sh when run via utah is causing the hang. Here are some tests that I did,

1. Run setup.sh manually first and then use utah to run the whole tests, i.e. 'sudo utah -r lp:ubuntu-test-case/server/runlists/floodlight.run' ==> the tests completed without issues

2. Once the above is complete, now run 'sudo utah -r lp:ubuntu-test-case/server/runlists/floodlight.run' again. ==> the tests hang and the zombie sh is created
( when you run the whole suite using utah, the cleanup script would have uninstalled all those pkgs that I installed manually using setup.sh in 1. Hence the installation steps in setup.sh i.e. would now have been carried out which might cause the hang)

3. Just to confirm, run setup.sh, then cleanup.sh and then run the tests using 'sudo utah -r lp:ubuntu-test-case/server/runlists/floodlight.run' ==> Hang occurs

4. Tried step 1 again just to confirm and the test completed without any problem.

Note: Based on the kernel version that you are using, the test test_openflow may hang during the process (bug 1181315), just to make sure that it does not hang it's best to use a kernel that does not have the bug from http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9-rc5-raring/