[Bug 66005] Apache crashes, if there is a tomcat server, which can not be resolved

[bu...@apache.org]

https://bz.apache.org/bugzilla/show_bug.cgi?id=66005

--- Comment #19 from Josef Čejka <jc...@suse.cz> ---
I have two customers reporting the same issue on SLES15-SP4 but I can't
reproduce it by myself.

With additional debug messages like in comment #11 log showed that it crashed
when jk_resolve() was reusing jk_apr_pool with address that was correctly
initialized in previous jk_resolve call. However in time of reuse the memory
pointed to by jk_apr_pool contained "random" data and also "pconf" pool passed
to jk_resolve() as "pool" argument had not jk_apr_pool in it's list of
children.

When I tried to reproduce the pool was never reused because it was called only
once during module initialization and every apache ap_config_generation
generation caused module was unload/load and it reset the jk_apr_pool variable
back to NULL.

To fix it I created a patch that creates new pool on every jk_resolve() call as
suggested in comment #18. With this customers reported that the issue is fixed.

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