check_deadlock is called with context not initialized

[chiache]

This exception is thrown while replaying the building of php5.

Traceback (most recent call last):
File "/usr/local/bin/racetest", line 151, in
racetest.do_all_tests(args, tests)
File "/usr/local/lib/python2.6/dist-packages/racepro/racetest.py", line 269, in do_all_tests
if not do_one_test(args, t_name, t_exec):
File "/usr/local/lib/python2.6/dist-packages/racepro/racetest.py", line 187, in do_one_test
if not scribewrap.scribe_replay(args):
File "/usr/local/lib/python2.6/dist-packages/racepro/scribewrap.py", line 206, in scribe_replay
wait = not args.max_runtime)
File "/usr/local/lib/python2.6/dist-packages/racepro/scribewrap.py", line 52, in do_check_deadlock
context.check_deadlock()

[chiache]

This seems like to be a dependency bug of racepro.

def do_check_deadlock(signum, stack):
    try:
        context.check_deadlock()
    except OSError as e:
        if e.errno != errno.EPERM:
            logging.error("Cannot check for deadlock (%s)" % str(e))
if deadlock:
    signal.signal(signal.SIGALRM, do_check_deadlock)
    signal.setitimer(signal.ITIMER_REAL, deadlock, deadlock)

The timer got timed out before the context is initialized, therefore the error is thrown.

[orenl]

does it happen if you increase the deadlock period check ?
if it is a kernel deadlock, what's the kernel trace ?

On 07/06/2011 04:52 PM, chiache wrote:

This exception is thrown while replaying the building of php5.

Traceback (most recent call last):
File "/usr/local/bin/racetest", line 151, in
racetest.do_all_tests(args, tests)
File "/usr/local/lib/python2.6/dist-packages/racepro/racetest.py", line 269, in do_all_tests
if not do_one_test(args, t_name, t_exec):
File "/usr/local/lib/python2.6/dist-packages/racepro/racetest.py", line 187, in do_one_test
if not scribewrap.scribe_replay(args):
File "/usr/local/lib/python2.6/dist-packages/racepro/scribewrap.py", line 206, in scribe_replay
wait = not args.max_runtime)
File "/usr/local/lib/python2.6/dist-packages/racepro/scribewrap.py", line 52, in do_check_deadlock
context.check_deadlock()

[chiache]

This is not a deterministic bug. I am trying to reproduce it.