Many thanks for your help and the detailed information! My Python version is 3.10.6. I'll try to switch to the latest point release next, but it will a couple of days before I can do it. Will let you know the results as soon as I got it done.
Best regards, Carsten Am 08.02.23 um 21:28 schrieb Graham Dumpleton: > Possibly related issues: > > https://bugs.archlinux.org/task/72979 <https://bugs.archlinux.org/task/72979> > https://bugs.python.org/issue46006 <https://bugs.python.org/issue46006> > > There are possibly some known issues with sub interpreters in code used by > sqlite module there. > > What exact version of Python 3.10 as you using? Can you update to latest > patch revision of it? > > Graham > >> On 9 Feb 2023, at 7:22 am, Graham Dumpleton <[email protected]> >> wrote: >> >> More specifically, if you look at the stack trace you see: >> >> #6 0x00007f68aefe6292 in PyEval_RestoreThread () from >> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >> #7 0x00007f68af02f1dc in PyGILState_Ensure () from >> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >> #8 0x00007f68ac30d6e3 in ?? () from >> target:/usr/lib/python3.10/lib-dynload/_sqlite3.cpython-310-x86_64-linux-gnu.so >> #9 0x00007f68a750b01a in sqlite3LeaveMutexAndCloseZombie () from >> target:/lib/x86_64-linux-gnu/libsqlite3.so.0 >> >> Note how that function ends up calling PyGILState_Ensure(). That is a big no >> no when working with Python sub interpreters. >> >> In other words, it uses the simplified GIL state API for some callback into >> Python from C code of SQLite and using that when in a sub interpreter can >> cause deadlocks. >> >> Application Issues — mod_wsgi 4.9.4 documentation >> <https://modwsgi.readthedocs.io/en/master/user-guides/application-issues.html#python-simplified-gil-state-api> >> modwsgi.readthedocs.io >> <https://modwsgi.readthedocs.io/en/master/user-guides/application-issues.html#python-simplified-gil-state-api> >> <favicon.ico> >> <https://modwsgi.readthedocs.io/en/master/user-guides/application-issues.html#python-simplified-gil-state-api> >> >> <https://modwsgi.readthedocs.io/en/master/user-guides/application-issues.html#python-simplified-gil-state-api> >> >> So need to find the code for that function in sqlite module and work out >> what it does. >> >> Graham >> >>> On 9 Feb 2023, at 7:09 am, Graham Dumpleton <[email protected]> >>> wrote: >>> >>> The key bit of information in that is the call to >>> sqlite3LeaveMutexAndCloseZombie(). It looks like sqlite module for Python >>> is doing something really strange that isn't working with sub interpreters. >>> This will need some research as it may be a bug they have introduced in >>> Python 3.10 for the sqlite module. >>> >>> Graham >>> >>>> On 9 Feb 2023, at 7:02 am, Carsten Fuchs <[email protected]> wrote: >>>> >>>> Ok, I got a stack trace. My understanding of this is limited, but the >>>> thread seems to be stuck at polling something without timeout? (gdb >>>> reports that file ../sysdeps/unix/sysv/linux/poll.c cannot be found) >>>> >>>> The full session follows. (Using plaintext email today in the hope that >>>> this helps with readibility. Please let me know if I should send >>>> differently instead.) >>>> Between the two "thread apply all bt" commands I waited about two minutes: >>>> >>>> >>>> $ sudo gdb /usr/sbin/apache2 60501 >>>> GNU gdb (Ubuntu 12.1-0ubuntu1~22.04) 12.1 >>>> Copyright (C) 2022 Free Software Foundation, Inc. >>>> License GPLv3+: GNU GPL version 3 or later >>>> <http://gnu.org/licenses/gpl.html> >>>> This is free software: you are free to change and redistribute it. >>>> There is NO WARRANTY, to the extent permitted by law. >>>> Type "show copying" and "show warranty" for details. >>>> This GDB was configured as "x86_64-linux-gnu". >>>> Type "show configuration" for configuration details. >>>> For bug reporting instructions, please see: >>>> <https://www.gnu.org/software/gdb/bugs/>. >>>> Find the GDB manual and other documentation resources online at: >>>> <http://www.gnu.org/software/gdb/documentation/>. >>>> >>>> For help, type "help". >>>> Type "apropos word" to search for commands related to "word"... >>>> Reading symbols from /usr/sbin/apache2... >>>> (No debugging symbols found in /usr/sbin/apache2) >>>> Attaching to program: /usr/sbin/apache2, process 60501 >>>> [New LWP 60532] >>>> [New LWP 60533] >>>> [New LWP 60534] >>>> [Thread debugging using libthread_db enabled] >>>> Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". >>>> 0x00007f68af72bd7f in __GI___poll (fds=0x7ffe9f0b9e90, nfds=1, timeout=-1) >>>> at ../sysdeps/unix/sysv/linux/poll.c:29 >>>> 29../sysdeps/unix/sysv/linux/poll.c: Datei oder Verzeichnis nicht gefunden. >>>> (gdb) thread apply all bt >>>> >>>> Thread 4 (Thread 0x7f68ad6f9640 (LWP 60534) "apache2"): >>>> #0 __futex_abstimed_wait_common64 (private=-1359973880, cancel=true, >>>> abstime=0x7f68ad6f7220, op=137, expected=0, futex_word=0x7f68af3b49a8 >>>> <_PyRuntime+424>) at ./nptl/futex-internal.c:57 >>>> #1 __futex_abstimed_wait_common (cancel=true, private=-1359973880, >>>> abstime=0x7f68ad6f7220, clockid=-1359689157, expected=0, >>>> futex_word=0x7f68af3b49a8 <_PyRuntime+424>) at ./nptl/futex-internal.c:87 >>>> #2 __GI___futex_abstimed_wait_cancelable64 >>>> (futex_word=futex_word@entry=0x7f68af3b49a8 <_PyRuntime+424>, >>>> expected=expected@entry=0, clockid=clockid@entry=1, >>>> abstime=abstime@entry=0x7f68ad6f7220, private=private@entry=0) at >>>> ./nptl/futex-internal.c:139 >>>> #3 0x00007f68af6a6f1b in __pthread_cond_wait_common >>>> (abstime=0x7f68ad6f7220, clockid=1, mutex=0x7f68af3b49b0 <_PyRuntime+432>, >>>> cond=0x7f68af3b4980 <_PyRuntime+384>) at ./nptl/pthread_cond_wait.c:503 >>>> #4 ___pthread_cond_timedwait64 (cond=0x7f68af3b4980 <_PyRuntime+384>, >>>> mutex=0x7f68af3b49b0 <_PyRuntime+432>, abstime=0x7f68ad6f7220) at >>>> ./nptl/pthread_cond_wait.c:652 >>>> #5 0x00007f68aefe5df5 in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #6 0x00007f68aefe6292 in PyEval_RestoreThread () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #7 0x00007f68af02f1dc in PyGILState_Ensure () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #8 0x00007f68ac30d6e3 in ?? () from >>>> target:/usr/lib/python3.10/lib-dynload/_sqlite3.cpython-310-x86_64-linux-gnu.so >>>> #9 0x00007f68a750b01a in sqlite3LeaveMutexAndCloseZombie () from >>>> target:/lib/x86_64-linux-gnu/libsqlite3.so.0 >>>> #10 0x00007f68a750b2d6 in ?? () from >>>> target:/lib/x86_64-linux-gnu/libsqlite3.so.0 >>>> #11 0x00007f68ac3087d6 in ?? () from >>>> target:/usr/lib/python3.10/lib-dynload/_sqlite3.cpython-310-x86_64-linux-gnu.so >>>> #12 0x00007f68aef118ba in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #13 0x00007f68aee9aeee in _PyEval_EvalFrameDefault () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #14 0x00007f68aefe781f in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #15 0x00007f68aee9aeee in _PyEval_EvalFrameDefault () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #16 0x00007f68aefe781f in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #17 0x00007f68aee97766 in _PyEval_EvalFrameDefault () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #18 0x00007f68aefe781f in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #19 0x00007f68aee9c9b8 in _PyEval_EvalFrameDefault () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #20 0x00007f68aefe781f in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #21 0x00007f68aee97766 in _PyEval_EvalFrameDefault () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #22 0x00007f68aefe781f in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #23 0x00007f68aee9aeee in _PyEval_EvalFrameDefault () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #24 0x00007f68aefe781f in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #25 0x00007f68aee9aeee in _PyEval_EvalFrameDefault () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #26 0x00007f68aefe781f in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #27 0x00007f68aef08118 in PyVectorcall_Call () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #28 0x00007f68aee97766 in _PyEval_EvalFrameDefault () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #29 0x00007f68aefe781f in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #30 0x00007f68aee9962e in _PyEval_EvalFrameDefault () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #31 0x00007f68aefe781f in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #32 0x00007f68aef08618 in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #33 0x00007f68aee99458 in _PyEval_EvalFrameDefault () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #34 0x00007f68aefe781f in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #35 0x00007f68aef086ac in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #36 0x00007f68af41680f in ?? () from >>>> target:/usr/lib/apache2/modules/mod_wsgi.so >>>> #37 0x00007f68af41c9c8 in ?? () from >>>> target:/usr/lib/apache2/modules/mod_wsgi.so >>>> #38 0x00007f68af6a7b43 in start_thread (arg=<optimized out>) at >>>> ./nptl/pthread_create.c:442 >>>> #39 0x00007f68af739a00 in clone3 () at >>>> ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81 >>>> >>>> Thread 3 (Thread 0x7f68adefa640 (LWP 60533) "apache2"): >>>> #0 __futex_abstimed_wait_common64 (private=0, cancel=true, >>>> abstime=0x7f68adef9d80, op=137, expected=0, futex_word=0x7f68af3b49a8 >>>> <_PyRuntime+424>) at ./nptl/futex-internal.c:57 >>>> #1 __futex_abstimed_wait_common (cancel=true, private=0, >>>> abstime=0x7f68adef9d80, clockid=0, expected=0, futex_word=0x7f68af3b49a8 >>>> <_PyRuntime+424>) at ./nptl/futex-internal.c:87 >>>> #2 __GI___futex_abstimed_wait_cancelable64 >>>> (futex_word=futex_word@entry=0x7f68af3b49a8 <_PyRuntime+424>, >>>> expected=expected@entry=0, clockid=clockid@entry=1, >>>> abstime=abstime@entry=0x7f68adef9d80, private=private@entry=0) at >>>> ./nptl/futex-internal.c:139 >>>> #3 0x00007f68af6a6f1b in __pthread_cond_wait_common >>>> (abstime=0x7f68adef9d80, clockid=1, mutex=0x7f68af3b49b0 <_PyRuntime+432>, >>>> cond=0x7f68af3b4980 <_PyRuntime+384>) at ./nptl/pthread_cond_wait.c:503 >>>> #4 ___pthread_cond_timedwait64 (cond=0x7f68af3b4980 <_PyRuntime+384>, >>>> mutex=0x7f68af3b49b0 <_PyRuntime+432>, abstime=0x7f68adef9d80) at >>>> ./nptl/pthread_cond_wait.c:652 >>>> #5 0x00007f68aefe5df5 in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #6 0x00007f68aefe6292 in PyEval_RestoreThread () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #7 0x00007f68af02f1dc in PyGILState_Ensure () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #8 0x00007f68af41cf30 in ?? () from >>>> target:/usr/lib/apache2/modules/mod_wsgi.so >>>> #9 0x00007f68af6a7b43 in start_thread (arg=<optimized out>) at >>>> ./nptl/pthread_create.c:442 >>>> #10 0x00007f68af739a00 in clone3 () at >>>> ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81 >>>> >>>> Thread 2 (Thread 0x7f68ae6fb640 (LWP 60532) "apache2"): >>>> #0 0x00007f68af72e7ed in __GI___select (nfds=0, readfds=0x0, >>>> writefds=0x0, exceptfds=0x0, timeout=0x7f68ae6fad60) at >>>> ../sysdeps/unix/sysv/linux/select.c:69 >>>> #1 0x00007f68af865c09 in apr_sleep () from >>>> target:/lib/x86_64-linux-gnu/libapr-1.so.0 >>>> --Type <RET> for more, q to quit, c to continue without paging-- >>>> #2 0x00007f68af41d11c in ?? () from >>>> target:/usr/lib/apache2/modules/mod_wsgi.so >>>> #3 0x00007f68af6a7b43 in start_thread (arg=<optimized out>) at >>>> ./nptl/pthread_create.c:442 >>>> #4 0x00007f68af739a00 in clone3 () at >>>> ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81 >>>> >>>> Thread 1 (Thread 0x7f68af59a780 (LWP 60501) "apache2"): >>>> #0 0x00007f68af72bd7f in __GI___poll (fds=0x7ffe9f0b9e90, nfds=1, >>>> timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 >>>> #1 0x00007f68af85e0fb in apr_poll () from >>>> target:/lib/x86_64-linux-gnu/libapr-1.so.0 >>>> #2 0x00007f68af4222d8 in ?? () from >>>> target:/usr/lib/apache2/modules/mod_wsgi.so >>>> #3 0x00007f68af423f1f in ?? () from >>>> target:/usr/lib/apache2/modules/mod_wsgi.so >>>> #4 0x000055c9771cc73d in ap_run_pre_mpm () >>>> #5 0x00007f68af478455 in ?? () from >>>> target:/usr/lib/apache2/modules/mod_mpm_event.so >>>> #6 0x000055c9771c30e8 in ap_run_mpm () >>>> #7 0x000055c9771c2609 in main () >>>> (gdb) >>>> (gdb) >>>> (gdb) >>>> (gdb) >>>> (gdb) thread apply all bt >>>> >>>> Thread 4 (Thread 0x7f68ad6f9640 (LWP 60534) "apache2"): >>>> #0 __futex_abstimed_wait_common64 (private=-1359973880, cancel=true, >>>> abstime=0x7f68ad6f7220, op=137, expected=0, futex_word=0x7f68af3b49a8 >>>> <_PyRuntime+424>) at ./nptl/futex-internal.c:57 >>>> #1 __futex_abstimed_wait_common (cancel=true, private=-1359973880, >>>> abstime=0x7f68ad6f7220, clockid=-1359689157, expected=0, >>>> futex_word=0x7f68af3b49a8 <_PyRuntime+424>) at ./nptl/futex-internal.c:87 >>>> #2 __GI___futex_abstimed_wait_cancelable64 >>>> (futex_word=futex_word@entry=0x7f68af3b49a8 <_PyRuntime+424>, >>>> expected=expected@entry=0, clockid=clockid@entry=1, >>>> abstime=abstime@entry=0x7f68ad6f7220, private=private@entry=0) at >>>> ./nptl/futex-internal.c:139 >>>> #3 0x00007f68af6a6f1b in __pthread_cond_wait_common >>>> (abstime=0x7f68ad6f7220, clockid=1, mutex=0x7f68af3b49b0 <_PyRuntime+432>, >>>> cond=0x7f68af3b4980 <_PyRuntime+384>) at ./nptl/pthread_cond_wait.c:503 >>>> #4 ___pthread_cond_timedwait64 (cond=0x7f68af3b4980 <_PyRuntime+384>, >>>> mutex=0x7f68af3b49b0 <_PyRuntime+432>, abstime=0x7f68ad6f7220) at >>>> ./nptl/pthread_cond_wait.c:652 >>>> #5 0x00007f68aefe5df5 in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #6 0x00007f68aefe6292 in PyEval_RestoreThread () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #7 0x00007f68af02f1dc in PyGILState_Ensure () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #8 0x00007f68ac30d6e3 in ?? () from >>>> target:/usr/lib/python3.10/lib-dynload/_sqlite3.cpython-310-x86_64-linux-gnu.so >>>> #9 0x00007f68a750b01a in sqlite3LeaveMutexAndCloseZombie () from >>>> target:/lib/x86_64-linux-gnu/libsqlite3.so.0 >>>> #10 0x00007f68a750b2d6 in ?? () from >>>> target:/lib/x86_64-linux-gnu/libsqlite3.so.0 >>>> #11 0x00007f68ac3087d6 in ?? () from >>>> target:/usr/lib/python3.10/lib-dynload/_sqlite3.cpython-310-x86_64-linux-gnu.so >>>> #12 0x00007f68aef118ba in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #13 0x00007f68aee9aeee in _PyEval_EvalFrameDefault () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #14 0x00007f68aefe781f in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #15 0x00007f68aee9aeee in _PyEval_EvalFrameDefault () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #16 0x00007f68aefe781f in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #17 0x00007f68aee97766 in _PyEval_EvalFrameDefault () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #18 0x00007f68aefe781f in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #19 0x00007f68aee9c9b8 in _PyEval_EvalFrameDefault () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #20 0x00007f68aefe781f in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #21 0x00007f68aee97766 in _PyEval_EvalFrameDefault () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #22 0x00007f68aefe781f in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #23 0x00007f68aee9aeee in _PyEval_EvalFrameDefault () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #24 0x00007f68aefe781f in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #25 0x00007f68aee9aeee in _PyEval_EvalFrameDefault () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #26 0x00007f68aefe781f in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #27 0x00007f68aef08118 in PyVectorcall_Call () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #28 0x00007f68aee97766 in _PyEval_EvalFrameDefault () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #29 0x00007f68aefe781f in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #30 0x00007f68aee9962e in _PyEval_EvalFrameDefault () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #31 0x00007f68aefe781f in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #32 0x00007f68aef08618 in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #33 0x00007f68aee99458 in _PyEval_EvalFrameDefault () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #34 0x00007f68aefe781f in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #35 0x00007f68aef086ac in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #36 0x00007f68af41680f in ?? () from >>>> target:/usr/lib/apache2/modules/mod_wsgi.so >>>> #37 0x00007f68af41c9c8 in ?? () from >>>> target:/usr/lib/apache2/modules/mod_wsgi.so >>>> #38 0x00007f68af6a7b43 in start_thread (arg=<optimized out>) at >>>> ./nptl/pthread_create.c:442 >>>> #39 0x00007f68af739a00 in clone3 () at >>>> ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81 >>>> >>>> Thread 3 (Thread 0x7f68adefa640 (LWP 60533) "apache2"): >>>> #0 __futex_abstimed_wait_common64 (private=0, cancel=true, >>>> abstime=0x7f68adef9d80, op=137, expected=0, futex_word=0x7f68af3b49a8 >>>> <_PyRuntime+424>) at ./nptl/futex-internal.c:57 >>>> #1 __futex_abstimed_wait_common (cancel=true, private=0, >>>> abstime=0x7f68adef9d80, clockid=0, expected=0, futex_word=0x7f68af3b49a8 >>>> <_PyRuntime+424>) at ./nptl/futex-internal.c:87 >>>> #2 __GI___futex_abstimed_wait_cancelable64 >>>> (futex_word=futex_word@entry=0x7f68af3b49a8 <_PyRuntime+424>, >>>> expected=expected@entry=0, clockid=clockid@entry=1, >>>> abstime=abstime@entry=0x7f68adef9d80, private=private@entry=0) at >>>> ./nptl/futex-internal.c:139 >>>> #3 0x00007f68af6a6f1b in __pthread_cond_wait_common >>>> (abstime=0x7f68adef9d80, clockid=1, mutex=0x7f68af3b49b0 <_PyRuntime+432>, >>>> cond=0x7f68af3b4980 <_PyRuntime+384>) at ./nptl/pthread_cond_wait.c:503 >>>> #4 ___pthread_cond_timedwait64 (cond=0x7f68af3b4980 <_PyRuntime+384>, >>>> mutex=0x7f68af3b49b0 <_PyRuntime+432>, abstime=0x7f68adef9d80) at >>>> ./nptl/pthread_cond_wait.c:652 >>>> #5 0x00007f68aefe5df5 in ?? () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #6 0x00007f68aefe6292 in PyEval_RestoreThread () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #7 0x00007f68af02f1dc in PyGILState_Ensure () from >>>> target:/lib/x86_64-linux-gnu/libpython3.10.so.1.0 >>>> #8 0x00007f68af41cf30 in ?? () from >>>> target:/usr/lib/apache2/modules/mod_wsgi.so >>>> #9 0x00007f68af6a7b43 in start_thread (arg=<optimized out>) at >>>> ./nptl/pthread_create.c:442 >>>> #10 0x00007f68af739a00 in clone3 () at >>>> ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81 >>>> >>>> Thread 2 (Thread 0x7f68ae6fb640 (LWP 60532) "apache2"): >>>> #0 0x00007f68af72e7ed in __GI___select (nfds=0, readfds=0x0, >>>> writefds=0x0, exceptfds=0x0, timeout=0x7f68ae6fad60) at >>>> ../sysdeps/unix/sysv/linux/select.c:69 >>>> #1 0x00007f68af865c09 in apr_sleep () from >>>> target:/lib/x86_64-linux-gnu/libapr-1.so.0 >>>> --Type <RET> for more, q to quit, c to continue without paging-- >>>> #2 0x00007f68af41d11c in ?? () from >>>> target:/usr/lib/apache2/modules/mod_wsgi.so >>>> #3 0x00007f68af6a7b43 in start_thread (arg=<optimized out>) at >>>> ./nptl/pthread_create.c:442 >>>> #4 0x00007f68af739a00 in clone3 () at >>>> ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81 >>>> >>>> Thread 1 (Thread 0x7f68af59a780 (LWP 60501) "apache2"): >>>> #0 0x00007f68af72bd7f in __GI___poll (fds=0x7ffe9f0b9e90, nfds=1, >>>> timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 >>>> #1 0x00007f68af85e0fb in apr_poll () from >>>> target:/lib/x86_64-linux-gnu/libapr-1.so.0 >>>> #2 0x00007f68af4222d8 in ?? () from >>>> target:/usr/lib/apache2/modules/mod_wsgi.so >>>> #3 0x00007f68af423f1f in ?? () from >>>> target:/usr/lib/apache2/modules/mod_wsgi.so >>>> #4 0x000055c9771cc73d in ap_run_pre_mpm () >>>> #5 0x00007f68af478455 in ?? () from >>>> target:/usr/lib/apache2/modules/mod_mpm_event.so >>>> #6 0x000055c9771c30e8 in ap_run_mpm () >>>> #7 0x000055c9771c2609 in main () >>>> (gdb) >>>> >>>> >>>> Best regards, >>>> Carsten >>>> >>>> >>>> Am 07.02.23 um 22:44 schrieb Graham Dumpleton: >>>>> Only other thing can suggest if you know point at which it is hanging, is >>>>> to test and extract C stack trace by attaching gdb to the running >>>>> process. This may or may not work depending on your system setup and what >>>>> tools are installed. >>>>> >>>>> Debugging Techniques — mod_wsgi 4.9.4 documentation >>>>> <https://modwsgi.readthedocs.io/en/master/user-guides/debugging-techniques.html#debugging-crashes-with-gdb> >>>>> modwsgi.readthedocs.io >>>>> <https://modwsgi.readthedocs.io/en/master/user-guides/debugging-techniques.html#debugging-crashes-with-gdb> >>>>> favicon.ico >>>>> <https://modwsgi.readthedocs.io/en/master/user-guides/debugging-techniques.html#debugging-crashes-with-gdb> >>>>> >>>>> <https://modwsgi.readthedocs.io/en/master/user-guides/debugging-techniques.html#debugging-crashes-with-gdb> >>>>> >>>>> >>>>> That may give some clues. >>>>> >>>>> Graham >>>>> >>>>>> On 8 Feb 2023, at 8:42 am, Graham Dumpleton <[email protected]> >>>>>> wrote: >>>>>> >>>>>> Is any of your code using ctypes module for Apache, or any other module >>>>>> which is used to call into C code by writing Python code only? >>>>>> >>>>>> Graham >>>>>> >>>> >>>> -- >>>> You received this message because you are subscribed to the Google Groups >>>> "modwsgi" group. >>>> To unsubscribe from this group and stop receiving emails from it, send an >>>> email to [email protected]. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/modwsgi/a09f8380-eddd-e859-911b-5919d44ea610%40cafu.de. >>> >> > > -- > You received this message because you are subscribed to a topic in the Google > Groups "modwsgi" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/modwsgi/bntPYwPnsU8/unsubscribe > <https://groups.google.com/d/topic/modwsgi/bntPYwPnsU8/unsubscribe>. > To unsubscribe from this group and all its topics, send an email to > [email protected] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/modwsgi/7715AEF5-6F1F-407A-B899-EB4871707856%40gmail.com > > <https://groups.google.com/d/msgid/modwsgi/7715AEF5-6F1F-407A-B899-EB4871707856%40gmail.com?utm_medium=email&utm_source=footer>. -- Dipl.-Inf. Carsten Fuchs Industriegebiet 3 ℅ Rofu 55768 Hoppstädten-Weiersbach https://www.cafu.de -- You received this message because you are subscribed to the Google Groups "modwsgi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/modwsgi/b15082e6-0f13-5687-97a8-7b61da520a62%40cafu.de.
