| msg160357 - (view) |
Author: Antoine Pitrou (pitrou) *  |
Date: 2012-05-10 18:19 |
| This happens from time to time on my desktop computer: [151/354/1] test_ioctl test test_ioctl failed -- Traceback (most recent call last): File "/home/antoine/cpython/32/Lib/test/test_ioctl.py", line 36, in test_ioctl self.assertIn(rpgrp, ids) AssertionError: 25242 not found in (23865, 23615) |
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| msg171360 - (view) |
Author: Ezio Melotti (ezio.melotti) * |
Date: 2012-09-26 20:19 |
| Can you still reproduce this issue? Do you use any specific flag to run the tests? What OS is this? I tried on linux, solaris, and aix with ``./python -m test -F test_ioctl`` for about 1k loops, and couldn't reproduce the issue. |
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| msg180467 - (view) |
Author: Serhiy Storchaka (serhiy.storchaka) * |
Date: 2013-01-23 16:13 |
| Third argument of ioctl should be not " ", but a bytes object with platform dependent length sizeof(pid_t). Beside this, the code at the top of the module checks the same condition and skip the tests if it is wrong. Race condition happened -- the process has been put into the background between executing these two codes. What command line you run the test? |
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| msg180468 - (view) |
Author: Antoine Pitrou (pitrou) * |
Date: 2013-01-23 16:26 |
| > Beside this, the code at the top of the module checks the same > condition and skip the tests if it is wrong. Race condition happened > -- the process has been put into the background between executing > these two codes. What command line you run the test? It happens (or happened) quite often when using the -j option to regrtest. |
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| msg180470 - (view) |
Author: Serhiy Storchaka (serhiy.storchaka) * |
Date: 2013-01-23 16:45 |
| Do you use -r option? |
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| msg180472 - (view) |
Author: Antoine Pitrou (pitrou) * |
Date: 2013-01-23 16:47 |
| > Serhiy Storchaka added the comment: > > Do you use -r option? No. Usually just -j |
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| msg180475 - (view) |
Author: Serhiy Storchaka (serhiy.storchaka) * |
Date: 2013-01-23 16:59 |
| What is ? Can you please expose several lines of regrtest output before and after this error? When "/1" appeared? I suspect test_gdb: $ ./python -m test.regrtest -j 2 test_gdb test_gdb [1]+ Stopped ./python -m test.regrtest -j 2 test_gdb test_gdb |
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| msg180476 - (view) |
Author: Serhiy Storchaka (serhiy.storchaka) * |
Date: 2013-01-23 17:01 |
| $ ./python -m test.regrtest -j 2 test_gdb test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl [ 1/10] test_ioctl [ 2/10] test_ioctl [ 3/10] test_ioctl [ 4/10] test_ioctl [ 5/10] test_ioctl [ 6/10] test_ioctl [ 7/10] test_ioctl [ 8/10] test_ioctl test_ioctl skipped -- Neither the process group nor the session are attached to /dev/tty [ 9/10] test_ioctl test_ioctl skipped -- Neither the process group nor the session are attached to /dev/tty [10/10] test_gdb 8 tests OK. 2 tests skipped: test_ioctl test_ioctl |
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| msg180477 - (view) |
Author: Serhiy Storchaka (serhiy.storchaka) * |
Date: 2013-01-23 17:03 |
| $ ./python -m test.regrtest -j 4 test_gdb test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl [ 1/20] test_ioctl [ 2/20] test_ioctl [ 3/20] test_ioctl [ 4/20] test_ioctl [ 5/20] test_ioctl [ 6/20] test_ioctl [ 7/20] test_ioctl [ 8/20] test_ioctl [ 9/20] test_ioctl [10/20] test_ioctl [11/20] test_ioctl [12/20] test_ioctl [13/20] test_ioctl [14/20] test_ioctl [15/20] test_ioctl [16/20] test_ioctl [17/20] test_ioctl [18/20] test_ioctl test_ioctl skipped -- Neither the process group nor the session are attached to /dev/tty [19/20] test_ioctl [20/20/1] test_gdb test test_gdb failed -- Traceback (most recent call last): File "/home/serhiy/py/cpython/Lib/test/test_gdb.py", line 716, in test_threads cmds_after_breakpoint=['thread apply all py-bt']) File "/home/serhiy/py/cpython/Lib/test/test_gdb.py", line 170, in get_stack_trace self.assertEqual(err, '') AssertionError: 'Error occurred in Python command.\n' != '' - Error occurred in Python command. 18 tests OK. 1 test failed: test_gdb 1 test skipped: test_ioctl |
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| msg180478 - (view) |
Author: Serhiy Storchaka (serhiy.storchaka) * |
Date: 2013-01-23 17:05 |
| Bingo! $ ./python -m test.regrtest -j 4 test_gdb test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl test_ioctl [ 1/20] test_ioctl [ 2/20] test_ioctl [ 3/20] test_ioctl [ 4/20] test_ioctl [ 5/20] test_ioctl [ 6/20] test_ioctl [ 7/20] test_ioctl [ 8/20] test_ioctl [ 9/20] test_ioctl test_ioctl skipped -- Neither the process group nor the session are attached to /dev/tty [10/20] test_ioctl [11/20/1] test_ioctl test test_ioctl failed -- Traceback (most recent call last): File "/home/serhiy/py/cpython/Lib/test/test_ioctl.py", line 66, in test_ioctl_mutate_2048 self._check_ioctl_mutate_len(2048) File "/home/serhiy/py/cpython/Lib/test/test_ioctl.py", line 54, in _check_ioctl_mutate_len self.assertIn(rpgrp, ids) AssertionError: 14270 not found in (14225, 4030) [12/20/1] test_ioctl test_ioctl skipped -- Neither the process group nor the session are attached to /dev/tty [13/20/1] test_ioctl [14/20/1] test_ioctl [15/20/1] test_ioctl [16/20/1] test_ioctl [17/20/1] test_ioctl test_ioctl skipped -- Neither the process group nor the session are attached to /dev/tty [18/20/1] test_ioctl [19/20/1] test_ioctl [20/20/1] test_gdb 16 tests OK. 1 test failed: test_ioctl 3 tests skipped: test_ioctl test_ioctl test_ioctl |
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| msg180479 - (view) |
Author: Antoine Pitrou (pitrou) * |
Date: 2013-01-23 17:11 |
| Nice catch, Serhiy. I wouldn't have suspected test_gdb. |
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| msg180481 - (view) |
Author: Serhiy Storchaka (serhiy.storchaka) * |
Date: 2013-01-23 17:40 |
| Perhaps we need a possibility to mark a test that it can't run in parallel. I suspect some multiprocess tests fail for same reason. |
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| msg180494 - (view) |
Author: Antoine Pitrou (pitrou) * |
Date: 2013-01-23 19:08 |
| > Perhaps we need a possibility to mark a test that it can't run in parallel. > I suspect some multiprocess tests fail for same reason. Well, first I would like to know what the underlying problem is. -j doesn't use multiprocessing, it spawns standalone processes using the subprocess module. |
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| msg180496 - (view) |
Author: Antoine Pitrou (pitrou) * |
Date: 2013-01-23 19:20 |
| Ah, I see, that's because of the "Skip if another process is in foreground" thing? |
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| msg180497 - (view) |
Author: Antoine Pitrou (pitrou) * |
Date: 2013-01-23 19:34 |
| Given what _check_ioctl_mutate_len() seems to be designed to check, perhaps we should relax: self.assertIn(rpgrp, ids) into: self.assertNotEqual(rpgrp, fill) or perhaps simply: self.assertGreater(rpgrp, 0) |
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| msg180498 - (view) |
Author: Antoine Pitrou (pitrou) * |
Date: 2013-01-23 19:54 |
| Ah, and the test_ioctl() method needs to be fixed too. |
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| msg221850 - (view) |
Author: Mark Lawrence (BreamoreBoy) * |
Date: 2014-06-29 15:41 |
| @Antoine/Serhiy I believe that you'd want to follow up on this. |
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| msg256049 - (view) |
Author: Martin Panter (martin.panter) * |
Date: 2015-12-07 05:08 |
| I found that if you redirect GDB’s stdin if fixes all the problems. I don’t fully understand what GDB is doing to change the terminal’s foreground process group. In my patch I set stdin to a pipe. It is like using DEVNULL, but should be compatible with Python 2 as well. |
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| msg258358 - (view) |
Author: Roundup Robot (python-dev)  |
Date: 2016-01-16 05:21 |
| New changeset 8b8ac7adbf49 by Martin Panter in branch '2.7': Issue #14771: Redirect GDB's stdin to avoid messing the terminal settings https://hg.python.org/cpython/rev/8b8ac7adbf49 New changeset c87cc05af8e7 by Martin Panter in branch '3.5': Issue #14771: Redirect GDB's stdin to avoid messing the terminal settings https://hg.python.org/cpython/rev/c87cc05af8e7 |
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