[Bug 267435] www/apache24 core dumps when mod_perl, mod_php7, mod_dbd, and GD active

From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 05 Nov 2022 03:57:32 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=267435

--- Comment #6 from Tatsuki Makino <tatsuki_makino@hotmail.com> ---
I will paste the backtrace of the core dump I just obtained.
The result of uname -mrs is FreeBSD 12.4-STABLE amd64. The source is git
stable/12-n235813-a43afddd4325-dirty.

The backtrace is the standard output of the following command.
Maybe we should build a debug version since there are many unnamed symbols?

lldb -c /tmp/httpd.core -f /usr/local/sbin/httpd -o "bt all" -o q

(lldb) target create "/usr/local/sbin/httpd" --core "/tmp/httpd.core"
Core file '/tmp/httpd.core' (x86_64) was loaded.
(lldb) bt all
* thread #1, name = 'httpd', stop reason = signal SIGSEGV
  * frame #0: 0x000000080081623a libc.so.7`__sys_read + 10
    frame #1: 0x0000000800637be6 libthr.so.3`___lldb_unnamed_symbol577 + 54
    frame #2: 0x0000000000275690 httpd`ap_mpm_podx_check + 48
    frame #3: 0x0000000800b5218b mod_mpm_event.so`___lldb_unnamed_symbol375 +
1291
    frame #4: 0x0000000800b51b5a mod_mpm_event.so`___lldb_unnamed_symbol373 +
362
    frame #5: 0x0000000800b5026c mod_mpm_event.so`___lldb_unnamed_symbol364 +
668
    frame #6: 0x0000000000270b9b httpd`ap_run_mpm + 75
    frame #7: 0x000000000025e0f0 httpd`main + 2480
    frame #8: 0x000000000025d530 httpd`_start + 256
  thread #2, name = 'httpd', stop reason = signal SIGSEGV
    frame #0: 0x00000008006442bc libthr.so.3`___lldb_unnamed_symbol732 + 92
    frame #1: 0x000000080064191f libthr.so.3`___lldb_unnamed_symbol701 + 623
    frame #2: 0x00000008012376ed mod_http2.so`___lldb_unnamed_symbol930 + 301
    frame #3: 0x0000000800634fd4 libthr.so.3`___lldb_unnamed_symbol538 + 324
  thread #3, name = 'httpd', stop reason = signal SIGSEGV
    frame #0: 0x00000008006442bc libthr.so.3`___lldb_unnamed_symbol732 + 92
    frame #1: 0x000000080064191f libthr.so.3`___lldb_unnamed_symbol701 + 623
    frame #2: 0x00000008012376ed mod_http2.so`___lldb_unnamed_symbol930 + 301
    frame #3: 0x0000000800634fd4 libthr.so.3`___lldb_unnamed_symbol538 + 324
  thread #4, name = 'httpd', stop reason = signal SIGSEGV
    frame #0: 0x00000008006442bc libthr.so.3`___lldb_unnamed_symbol732 + 92
    frame #1: 0x000000080064191f libthr.so.3`___lldb_unnamed_symbol701 + 623
    frame #2: 0x00000008012376ed mod_http2.so`___lldb_unnamed_symbol930 + 301
    frame #3: 0x0000000800634fd4 libthr.so.3`___lldb_unnamed_symbol538 + 324
  thread #5, name = 'httpd', stop reason = signal SIGSEGV
    frame #0: 0x00000008006442bc libthr.so.3`___lldb_unnamed_symbol732 + 92
    frame #1: 0x000000080064191f libthr.so.3`___lldb_unnamed_symbol701 + 623
    frame #2: 0x00000008012376ed mod_http2.so`___lldb_unnamed_symbol930 + 301
    frame #3: 0x0000000800634fd4 libthr.so.3`___lldb_unnamed_symbol538 + 324
  thread #6, name = 'httpd', stop reason = signal SIGSEGV
    frame #0: 0x00000008006442bc libthr.so.3`___lldb_unnamed_symbol732 + 92
    frame #1: 0x000000080064191f libthr.so.3`___lldb_unnamed_symbol701 + 623
    frame #2: 0x00000008012376ed mod_http2.so`___lldb_unnamed_symbol930 + 301
    frame #3: 0x0000000800634fd4 libthr.so.3`___lldb_unnamed_symbol538 + 324
  thread #7, name = 'httpd', stop reason = signal SIGSEGV
    frame #0: 0x00000008006442bc libthr.so.3`___lldb_unnamed_symbol732 + 92
    frame #1: 0x000000080064191f libthr.so.3`___lldb_unnamed_symbol701 + 623
    frame #2: 0x00000008012376ed mod_http2.so`___lldb_unnamed_symbol930 + 301
    frame #3: 0x0000000800634fd4 libthr.so.3`___lldb_unnamed_symbol538 + 324
  thread #8, name = 'httpd', stop reason = signal SIGSEGV
    frame #0: 0x00000008006442bc libthr.so.3`___lldb_unnamed_symbol732 + 92
    frame #1: 0x000000080064191f libthr.so.3`___lldb_unnamed_symbol701 + 623
    frame #2: 0x00000008012376ed mod_http2.so`___lldb_unnamed_symbol930 + 301
    frame #3: 0x0000000800634fd4 libthr.so.3`___lldb_unnamed_symbol538 + 324
  thread #9, name = 'httpd', stop reason = signal SIGSEGV
    frame #0: 0x00000008006442bc libthr.so.3`___lldb_unnamed_symbol732 + 92
    frame #1: 0x000000080064191f libthr.so.3`___lldb_unnamed_symbol701 + 623
    frame #2: 0x00000008012376ed mod_http2.so`___lldb_unnamed_symbol930 + 301
    frame #3: 0x0000000800634fd4 libthr.so.3`___lldb_unnamed_symbol538 + 324
  thread #10, name = 'httpd', stop reason = signal SIGSEGV
    frame #0: 0x00000008006442bc libthr.so.3`___lldb_unnamed_symbol732 + 92
    frame #1: 0x000000080064191f libthr.so.3`___lldb_unnamed_symbol701 + 623
    frame #2: 0x000000000027b166 httpd`ap_queue_pop_something + 134
    frame #3: 0x0000000800b52edc mod_mpm_event.so`___lldb_unnamed_symbol384 +
300
    frame #4: 0x0000000800634fd4 libthr.so.3`___lldb_unnamed_symbol538 + 324
  thread #11, name = 'httpd', stop reason = signal SIGSEGV
    frame #0: 0x00000008006442bc libthr.so.3`___lldb_unnamed_symbol732 + 92
    frame #1: 0x000000080064191f libthr.so.3`___lldb_unnamed_symbol701 + 623
    frame #2: 0x000000000027b166 httpd`ap_queue_pop_something + 134
    frame #3: 0x0000000800b52edc mod_mpm_event.so`___lldb_unnamed_symbol384 +
300
    frame #4: 0x0000000800634fd4 libthr.so.3`___lldb_unnamed_symbol538 + 324
  thread #12, name = 'httpd', stop reason = signal SIGSEGV
    frame #0: 0x00000008006442bc libthr.so.3`___lldb_unnamed_symbol732 + 92
    frame #1: 0x000000080064191f libthr.so.3`___lldb_unnamed_symbol701 + 623
    frame #2: 0x000000000027b166 httpd`ap_queue_pop_something + 134
    frame #3: 0x0000000800b52edc mod_mpm_event.so`___lldb_unnamed_symbol384 +
300
    frame #4: 0x0000000800634fd4 libthr.so.3`___lldb_unnamed_symbol538 + 324
  thread #13, name = 'httpd', stop reason = signal SIGSEGV
    frame #0: 0x00000008006442bc libthr.so.3`___lldb_unnamed_symbol732 + 92
    frame #1: 0x000000080064191f libthr.so.3`___lldb_unnamed_symbol701 + 623
    frame #2: 0x000000000027b166 httpd`ap_queue_pop_something + 134
    frame #3: 0x0000000800b52edc mod_mpm_event.so`___lldb_unnamed_symbol384 +
300
    frame #4: 0x0000000800634fd4 libthr.so.3`___lldb_unnamed_symbol538 + 324
  thread #14, name = 'httpd', stop reason = signal SIGSEGV
    frame #0: 0x00000008006442bc libthr.so.3`___lldb_unnamed_symbol732 + 92
    frame #1: 0x000000080064191f libthr.so.3`___lldb_unnamed_symbol701 + 623
    frame #2: 0x000000000027b166 httpd`ap_queue_pop_something + 134
    frame #3: 0x0000000800b52edc mod_mpm_event.so`___lldb_unnamed_symbol384 +
300
    frame #4: 0x0000000800634fd4 libthr.so.3`___lldb_unnamed_symbol538 + 324
  thread #15, name = 'httpd', stop reason = signal SIGSEGV
    frame #0: 0x00000008006442bc libthr.so.3`___lldb_unnamed_symbol732 + 92
    frame #1: 0x000000080064191f libthr.so.3`___lldb_unnamed_symbol701 + 623
    frame #2: 0x000000000027b166 httpd`ap_queue_pop_something + 134
    frame #3: 0x0000000800b52edc mod_mpm_event.so`___lldb_unnamed_symbol384 +
300
    frame #4: 0x0000000800634fd4 libthr.so.3`___lldb_unnamed_symbol538 + 324
  thread #16, name = 'httpd', stop reason = signal SIGSEGV
    frame #0: 0x00000008007a6f2a libc.so.7`__sys_kill + 10
    frame #1: 0x000000080063ac72 libthr.so.3`___lldb_unnamed_symbol638 + 210
    frame #2: 0x000000080063a16e libthr.so.3`___lldb_unnamed_symbol619 + 318
    frame #3: 0x00007ffffffff003
    frame #4: 0x000000080298eb4f libgd.so.6`gdImageStringFTEx + 399
    frame #5: 0x0000000802944ad1 gd.so`___lldb_unnamed_symbol499 + 849
    frame #6: 0x0000000801d02cca libphp7.so`___lldb_unnamed_symbol7884 + 122
    frame #7: 0x0000000801ccb388 libphp7.so`execute_ex + 72
    frame #8: 0x0000000801ccb66f libphp7.so`zend_execute + 575
    frame #9: 0x0000000801c7d38c libphp7.so`zend_execute_scripts + 348
    frame #10: 0x0000000801c01f1b libphp7.so`php_execute_script + 667
    frame #11: 0x0000000801d1eec6 libphp7.so`___lldb_unnamed_symbol8299 + 1526
    frame #12: 0x00000000002632d7 httpd`ap_invoke_handler + 279
    frame #13: 0x000000000029e0c3 httpd`ap_process_async_request + 979
    frame #14: 0x000000000029ac62 httpd`___lldb_unnamed_symbol4046 + 210
    frame #15: 0x00000000002746a7 httpd`ap_run_process_connection + 55
    frame #16: 0x0000000800b5374e mod_mpm_event.so`___lldb_unnamed_symbol385 +
1214
    frame #17: 0x0000000800b53189 mod_mpm_event.so`___lldb_unnamed_symbol384 +
985
    frame #18: 0x0000000800634fd4 libthr.so.3`___lldb_unnamed_symbol538 + 324
  thread #17, name = 'httpd', stop reason = signal SIGSEGV
    frame #0: 0x00000008006442bc libthr.so.3`___lldb_unnamed_symbol732 + 92
    frame #1: 0x000000080064191f libthr.so.3`___lldb_unnamed_symbol701 + 623
    frame #2: 0x000000000027b166 httpd`ap_queue_pop_something + 134
    frame #3: 0x0000000800b52edc mod_mpm_event.so`___lldb_unnamed_symbol384 +
300
    frame #4: 0x0000000800634fd4 libthr.so.3`___lldb_unnamed_symbol538 + 324
  thread #18, name = 'httpd', stop reason = signal SIGSEGV
    frame #0: 0x00000008007fd1ba libc.so.7`__sys_kevent + 10
    frame #1: 0x00000008006380a3 libthr.so.3`___lldb_unnamed_symbol589 + 83
    frame #2: 0x00000008005f9d62 libapr-1.so.0`___lldb_unnamed_symbol1233 + 130
    frame #3: 0x0000000800b54a50 mod_mpm_event.so`___lldb_unnamed_symbol390 +
1760
    frame #4: 0x0000000800634fd4 libthr.so.3`___lldb_unnamed_symbol538 + 324
(lldb) q

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