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Posted to bugs@httpd.apache.org by bu...@apache.org on 2018/03/13 14:39:03 UTC

[Bug 61861] Segmentation fault under load when password is incorrect

https://bz.apache.org/bugzilla/show_bug.cgi?id=61861

Eric Hontz <ai...@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|"double free or corruption" |Segmentation fault under
                   |under high load when also   |load when password is
                   |used with mod_authn_dbd     |incorrect

--- Comment #1 from Eric Hontz <ai...@gmail.com> ---
I recently confirmed that the crashes are present when only the ldap provider
is configured (AuthBasicProvider ldap) but an incorrect password is provided. 

I've even seen the seg faults when only using a concurency level of 50 with the
Apache Benchmark tool (ab -n2000 -c50 ...).

Occasionally, after the seg fault happens, all of the threads of a worker will
be in the waiting state, and CPU usage will be maxed on the server.


Please let me know if there is further information I can provide to help
determine the root cause. 

Thank you.

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