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From Eric Covener <>
Subject Re: httpd 2.4.25, mpm_event, ssl: segfaults
Date Wed, 01 Feb 2017 18:27:19 GMT
On Wed, Feb 1, 2017 at 1:02 PM, Niklas Edmundsson <> wrote:
> This might be due to processes being cleaned up due to hitting
> MaxSpareThreads or MaxConnectionsPerChild, these are tuned to not happen
> frequently. It's just a wild guess, but the reason for me suspecting this is
> the weird looking stacktraces that points towards use-after-free issues...

The backtraces of the other threads in the process might give a hint
if graceful proc shutdown is occurring -- e.g. one thread might have
join_workers / apr_thread_join in the stack.

Eric Covener

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