Hello, I have exactly the same issue that here https://mail-archives.apache.org/mod_mbox/perl-modperl/201509.mbox/%3CCAC5eUSu85CoiT0MkQvwvxjfrhJcn13DqJfV=egfuxvwswyr...@mail.gmail.com%3E
Same OS, Debian Jessie, and no problem at all with same configuration and Debian wheezy -> apache2 2.2.22 and mod_perl 2.0.7 After a while apache2 crashes with "Out of memory" but the complete system are using less than 15% of ram ... *** Error in `/usr/sbin/apache2': double free or corruption (!prev): 0x00007f8590000f10 *** [Tue Jan 12 14:32:25.852805 2016] [core:notice] [pid 19350:tid 140212941145984] AH00052: child pid 1487 exit signal Segmentation fault (11) [Tue Jan 12 14:32:25.852857 2016] [core:notice] [pid 19350:tid 140212941145984] AH00052: child pid 1488 exit signal Aborted (6) Out of memory! Out of memory! PerlIOApache_flush: flush can't be called before the response phase, <FIC> line 1599. *** longjmp causes uninitialized stack frame ***: /usr/sbin/apache2 terminated ======= Backtrace: ========= /lib/x86_64-linux-gnu/libc.so.6(+0x731ff)[0x7f85dd8051ff] /lib/x86_64-linux-gnu/libc.so.6(__fortify_fail+0x37)[0x7f85dd8884c7] /lib/x86_64-linux-gnu/libc.so.6(+0xf63fd)[0x7f85dd8883fd] /lib/x86_64-linux-gnu/libc.so.6(__longjmp_chk+0x29)[0x7f85dd888359] /usr/lib/x86_64-linux-gnu/libperl.so.5.20(+0x4d2f1)[0x7f85da4f72f1] /usr/lib/x86_64-linux-gnu/libperl.so.5.20(Perl_my_failure_exit+0x43)[0x7f85da5000b3] /usr/lib/x86_64-linux-gnu/libperl.so.5.20(Perl_die_unwind+0x27d)[0x7f85da5af08d] /usr/lib/x86_64-linux-gnu/libperl.so.5.20(Perl_vcroak+0x39)[0x7f85da551ab9] /usr/lib/x86_64-linux-gnu/libperl.so.5.20(+0xa8584)[0x7f85da552584] /usr/lib/apache2/modules/mod_perl.so(+0x1e3d1)[0x7f85da8863d1] /usr/lib/x86_64-linux-gnu/libperl.so.5.20(Perl_PerlIO_flush+0x3f)[0x7f85da5ef44f] /usr/lib/x86_64-linux-gnu/libperl.so.5.20(PerlIOBase_close+0x26)[0x7f85da5f1346] /usr/lib/apache2/modules/mod_perl.so(+0x1e3e9)[0x7f85da8863e9] /usr/lib/x86_64-linux-gnu/libperl.so.5.20(PerlIO__close+0x28)[0x7f85da5f13f8] /usr/lib/x86_64-linux-gnu/libperl.so.5.20(Perl_PerlIO_close+0xf)[0x7f85da5f143f] /usr/lib/x86_64-linux-gnu/libperl.so.5.20(Perl_io_close+0xba)[0x7f85da5cbe8a] /usr/lib/x86_64-linux-gnu/libperl.so.5.20(Perl_do_close+0x69)[0x7f85da5cbfb9] /usr/lib/apache2/modules/mod_perl.so(modperl_response_handler_cgi+0x138)[0x7f85da87b3a8] /usr/sbin/apache2(ap_run_handler+0x40)[0x7f85de69f2a0] /usr/sbin/apache2(ap_invoke_handler+0x69)[0x7f85de69f7e9] /usr/sbin/apache2(ap_process_async_request+0x392)[0x7f85de6b5682] /usr/sbin/apache2(+0x6b1f0)[0x7f85de6b21f0] /usr/sbin/apache2(ap_run_process_connection+0x40)[0x7f85de6a8b10] /usr/lib/apache2/modules/mod_mpm_event.so(+0x6d7a)[0x7f85dacb7d7a] /lib/x86_64-linux-gnu/libpthread.so.0(+0x80a4)[0x7f85ddb430a4] [Tue Jan 12 14:32:28.857012 2016] [core:notice] [pid 19350:tid 140212941145984] AH00052: child pid 1649 exit signal Segmentation fault (11) [Tue Jan 12 14:32:28.857070 2016] [core:notice] [pid 19350:tid 140212941145984] AH00052: child pid 1650 exit signal Segmentation fault (11) [Tue Jan 12 14:32:30.860185 2016] [core:notice] [pid 19350:tid 140212941145984] AH00052: child pid 1756 exit signal Segmentation fault (11) [Tue Jan 12 14:32:31.861317 2016] [core:notice] [pid 19350:tid 140212941145984] AH00052: child pid 1809 exit signal Segmentation fault (11) [Tue Jan 12 14:32:31.861365 2016] [core:notice] [pid 19350:tid 140212941145984] AH00052: child pid 1810 exit signal Segmentation fault (11) [Tue Jan 12 14:32:34.865446 2016] [core:notice] [pid 19350:tid 140212941145984] AH00052: child pid 1968 exit signal Segmentation fault (11) Any help will be greatly appreciated Fred