Red Hat Bugzilla – Bug 475845
httpd fails to start with coredump in libapr with large /etc/hosts file
Last modified: 2014-09-15 07:30:00 EDT
Description of problem:
apache (httpd) fails to start when there is a large /etc/hosts entry for the local hostname, eg:
18.104.22.168 punk punk.nether.net ad.doubleclick.net bs.serving-sys.com northwestairlines.112.2o7.net ads.mlive.com ads.uppitywis.org media.fastclick.net cdn.fastclick.net www.burstnet.com ads.pointroll.com servedby.advertising.com statse.webtrendslive.com ue.corp.yahoo.com fe.shortcuts.search.yahoo.com shortcuts.yahoo.com ad.yieldmanager.com pixel.quantserve.com an.tacoda.net s.clickability.com pix01.revsci.net www.adfusion.com ads.revsci.net ads.adsonar.com tag.contextweb.com ads.adsonar.com imagec05.247realmedia.com ads.cnn.com tracking.keywordmax.com quantserve.com r1.beta.ace.advertising.com edge.quantserve.com uac.advertising.com secure-us.imrworldwide.com adserver.adtechus.com network.realmedia.com aka-cdn-ns.adtechus.com optimized-by.rubiconproject.com open.ad.yieldmanager.net ad.thehill.com gannett.gcion.com track.pubmatic.com showads.pubmatic.com freep.ur.gcion.com metrics.mms.mavenapps.net static.ur.gcion.com cdn1.eyewonder.com
Version-Release number of selected component (if applicable):
Create a large /etc/hosts entry for the name that httpd selects
Steps to Reproduce:
1. edit /etc/hosts and specify a long list of hostnames (see above)
2. start httpd
3. check dmesg/kernel logs as well as cwd for core file, and relevant logs, eg:
httpd: segfault at 10 ip b7c5d9da sp bf94fe20 error 4 in libapr-1.so.0.3.3[b7c42000+2a000]
httpd: segfault at 10 ip b7c2c9da sp bfd1dfe0 error 4 in libapr-1.so.0.3.3[b7c11000+2a000]
httpd fails to launch shortly after reading /etc/hosts
Exists in both Fedora 10 & Rawhide. Did not appear to exist in Fedora 9 but unconfirmed.
stack trace of core:
#0 0xb7d4b9da in apr_getnameinfo () from /usr/lib/libapr-1.so.0
#1 0xb80070ca in ap_get_local_host () from /usr/sbin/httpd
#2 0xb80061ec in ap_fini_vhost_config () from /usr/sbin/httpd
#3 0xb8004989 in main () from /usr/sbin/httpd
Could you install debuginfo packages and then give us another backtrace?
This bug appears to have been reported against 'rawhide' during the Fedora 11 development cycle.
Changing version to '11'.
More information and reason for this action is here:
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Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 11. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
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'version' of '11'.
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Although we aim to fix as many bugs as possible during every release's
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The process we are following is described here:
Fedora 11 changed to end-of-life (EOL) status on 2010-06-25. Fedora 11 is
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Removing myself from needing to supply info notify. Keep closed won't fix.