ktest: Monitor kernel while running of user tests

Record the console of tests to both the console and the log.
Also, record the bug reports afte the test has completed.
Currently, if a kernel bug happens while running the userland
test, the test stops and will not record the kernel bug. This
makes it difficult to solve what happened.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl
index 125ab94e7294ce6c9a70415c011ba594edd16462..8bbfceedfdb29ad3f77e177087fd9dbcddd79150 100755 (executable)
--- a/tools/testing/ktest/ktest.pl
+++ b/tools/testing/ktest/ktest.pl
@@ -1110,6 +1110,7 @@ sub do_run_test {
 
            # we are not guaranteed to get a full line
            $full_line .= $line;
+           doprint $line;
 
            if ($full_line =~ /call trace:/i) {
                $bug = 1;
@@ -1126,6 +1127,19 @@ sub do_run_test {
     } while (!$child_done && !$bug);
 
     if ($bug) {
+       my $failure_start = time;
+       my $now;
+       do {
+           $line = wait_for_input($monitor_fp, 1);
+           if (defined($line)) {
+               doprint $line;
+           }
+           $now = time;
+           if ($now - $failure_start >= $stop_after_failure) {
+               last;
+           }
+       } while (defined($line));
+
        doprint "Detected kernel crash!\n";
        # kill the child with extreme prejudice
        kill 9, $child_pid;