[Wonder-disc] Apache 2.4 (.7) 'Segmentation fault'

[Mark G. <ma...@go...>]

Hi, 

We are deploying on Ubuntu 14.04.2 LTS, so it looks like we have to use Apache 2.4  (Apache/2.4.7)
We have built the correct adaptor, and it pretty much works as expected.

But, after a while, Apache appears to stall.

The apache error log states:
—
[Fri Mar 20 17:27:57.342752 2015] [:error] [pid 22139:tid 139805346232064] Invalid response!
[Fri Mar 20 17:27:57.342856 2015] [:error] [pid 22139:tid 139805346232064] Request handling error: No instance available
*** Error in `/usr/sbin/apache2': double free or corruption (fasttop): 0x00007f27043bba60 ***
*** Error in `/usr/sbin/apache2': double free or corruption (fasttop): 0x00007f27043bba60 ***
[Fri Mar 20 17:27:59.256651 2015] [core:notice] [pid 7680:tid 139805547931520] AH00051: child pid 22139 exit signal Segmentation fault (11), possible coredump in /etc/apache2
[Fri Mar 20 17:28:00.258189 2015] [core:notice] [pid 7680:tid 139805547931520] AH00051: child pid 22138 exit signal Aborted (6), possible coredump in /etc/apache2
[Fri Mar 20 17:28:00.265437 2015] [:error] [pid 22221:tid 139805312661248] WOShmem_unlock(): failed to unlock 872 bytes at 0x3a8: Invalid argument
[Fri Mar 20 17:28:01.259852 2015] [core:notice] [pid 7680:tid 139805547931520] AH00051: child pid 22221 exit signal Segmentation fault (11), possible coredump in /etc/apache2


[Fri Mar 20 18:25:29.212491 2015] [:error] [pid 22250:tid 139805312661248] lock_file_section(): failed to lock (1 attempts): Resource deadlock avoided
[Fri Mar 20 18:25:29.212530 2015] [:error] [pid 22250:tid 139805312661248] ac_readConfiguration: WOShmem_lock() failed. Skipping reading config.
—

(not sure the last 2 lines are anything to do with it).

To get it working again, I have to completely stop/start apache (a restart doesn’t appear to work).

"WOShmem_unlock()” might implicate the WebObjects adaptor.

Has anyone seen this behaviour before, or know how to fix it?


Thanks in advance,

Mark Gowdy