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Posted to bugs@httpd.apache.org by bu...@apache.org on 2004/12/02 00:29:51 UTC
DO NOT REPLY [Bug 32479] -
Apache 2.0.42 hangs on AIX 5.2
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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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