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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 32479] - Apache 2.0.42 hangs on AIX 5.2
Date Wed, 01 Dec 2004 23:29:51 GMT
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------- Additional Comments From trawick@apache.org  2004-12-02 00:29 -------
There are bugs fixed since 2.0.42 which cause all manner of symptoms, and I
would encourage you to upgrade.  Note also that you're getting a crash in
addition to the hang, but there is no reason to waste any time diagnosing a
segfault on that level of code.

Regarding the hang:

Of particular concern to users of Apache on AIX 5.2 is a vulnerability which was
resolved in 2.0.49 and which could cause a hang.  It is configuration-specific
so it could easily affect some Apache instances but not others.  Note also that
AIX 5.2 APAR IY46214 corrects a problem which could result in a web server hang.

When Apache hangs again, you can run the script at
  http://www.apache.org/~trawick/aixthrdbt.pl
to get backtraces of all the threads, and tar up the resulting files and attach
to this PR.

As root (assuming you start Apache as root):
  ./aixthrdbt.pl -p PARENTPID
where PARENTPID is the process id of the parent of this Apache instance (from
logs/httpd.pid or your PidFile).  dbx must be installed for this to work
(normally it is installed, but some folks omit that fileset).
This will create a bunch of files called "backtraces.nnn" in the current directory.

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