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From Niklas Edmundsson <ni...@acc.umu.se>
Subject Re: httpd 2.4.25, mpm_event, ssl: segfaults
Date Thu, 02 Feb 2017 19:49:00 GMT
On Thu, 2 Feb 2017, Niklas Edmundsson wrote:

> On Thu, 2 Feb 2017, Yann Ylavic wrote:
>
>>> Are we hitting a corner case of process cleanup that plays merry hell with
>>> https/ssl, or are we just having bad luck? Ideas? Suggestions?
>> 
>> 2.4.25 is eager to terminate/shutdown keepalive connections more
>> quickly (than previous versions) on graceful shutdown (e.g.
>> MaxConnectionsPerChild reached).
>> 
>> What might happen in ssl_io_filter_output() is that buffered output
>> data (already deleted but not cleared) end up being reused on
>> shutdown.
>> 
>> Could you please try the attached patch?
>
> Built and deployed, waiting for the most affected host to drain in order to 
> restart it.
>
> I'll also lower MaxConnectionsPerChild a bit more in order to stress this.

Still seems to SIGBUS. backtraces attached.

/Nikke
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