LAVA-1257 do not crash when STARTRUN is missing

This is happening when the signal is broken into two pieces because of some
kernel messages.

For instance in https://lkft.validation.linaro.org/scheduler/job/98105#L3203:

  <LAVA[   28.105258] random: crng init done
  _SIGNAL_STARTRUN 0_ltp-sched-tests 98105_4.1.4.1>

And later:

  <LAVA_SIGNAL_TESTCASE TEST_CASE_ID=runltp_sched RESULT=pass>
  Received signal: <TESTCASE> TEST_CASE_ID=runltp_sched RESULT=pass
  Invalid call to set_namespace_data: test

Ignore the result, print an error message trying to explain the problem to the
user and raise a TestError.

Change-Id: I69e8f52c3cf2c10893ba328dc14caa2878cd2ef0

1 files changed, 6 insertions, 0 deletions

diff --git a/lava_dispatcher/actions/test/shell.py b/lava_dispatcher/actions/test/shell.py
index 4c4eda093..3049e80c4 100644
--- a/lava_dispatcher/actions/test/shell.py
+++ b/lava_dispatcher/actions/test/shell.py
@@ -395,6 +395,12 @@ class TestShellAction(TestAction):
 
     @nottest
     def signal_test_case(self, params):
+        # If the STARTRUN signal was not received correctly, we cannot continue
+        # as the test_uuid is missing.
+        # This is only happening when the signal string is split by some kernel messages.
+        if self.signal_director.test_uuid is None:
+            self.logger.error("Unknown test uuid. The STARTRUN signal for this test action was not received correctly.")
+            raise TestError("Invalid TESTCASE signal")
         try:
             data = handle_testcase(params)
             # get the fixup from the pattern_dict