** Description changed:
+ [Impact]
+
+ lighttpd fails to execute (and the service fails to start) when it is
+ installed in a system which contains libfam0 installed.
+
+ This happens because libfam0 does not define specific symbols required
+ by lighttpd.
+
+ The issue is solved by replacing libfam0 by libgamin0, which defines the
+ required symbols. This is what the proposed fix changes.
+
+ In this sense, the lighttpd package is broken and backporting the fix
+ would save users from analyzing the issue and applying the workaround,
+ which exists (installing libgamin0 fixes the issue).
+
+ [Test Plan]
+
+ Run the following script in a clean Ubuntu install
+
+ ```
+ #!/bin/sh
+
+ set -ex
+
+ test_dep_regression() {
+ apt purge -y libfam0 libgamin0 lighttpd
+ apt install -y $1
+ apt install -y lighttpd
+ if ! /usr/sbin/lighttpd -v; then
+ echo "Err: possible libfam-libgamin conflict regression"
+ exit 1
+ fi
+ }
+
+ apt update
+ test_dep_regression libfam0
+ test_dep_regression libgamin0
+ ```
+
+ You should see that lighttpd fails to start. The issue will be
+ reproduced and "Err: possible libfam-libgamin conflict regression" will
+ be printed.
+
+ ```
+ + /usr/sbin/lighttpd -v
+ /usr/sbin/lighttpd: Symbol `FamErrlist' has different size in shared object,
consider re-linking
+ /usr/sbin/lighttpd: symbol lookup error: /usr/sbin/lighttpd: undefined
symbol: FAMNoExists
+ + echo Err: possible libfam-libgamin conflict regression
+ Err: possible libfam-libgamin conflict regression
+ + exit 1
+ ```
+
+ Then, apply the proposed fixes and re-run the script.
+
+ You should see that lighttpd prints the version and the issue is fixed.
+
+ [Where problems could occur]
+
+ libgamin and libfam are conflicting packages which clearly differ from
+ one another (this bug is enough proof). Replacing them on some system
+ could introduce (and reveal) new regressions for their reverse
+ dependencies.
+
+ Note that a test case for the described issue was included with the
+ proposed fixes and the SRUs should be gated when running the test suites
+ if any issues occour with this package.
+
+ [Other Info]
+
+ While the proposed fix for focal and bionic contain a new regression
autopkgtest entry, this was not included in impish nor proposed to debian
because the dependency on fam was removed in Debian (and the related delta
should be removed from Ubuntu in the next merge). See
https://salsa.debian.org/debian/lighttpd/-/merge_requests/18#note_206687 for
further reference.
+
+ [Original bug report]
+
lighttpd won't start.
Steps to reproduce:
$ sudo /usr/sbin/lighttpd
or
$ sudo systemctl start lighttpd
Expected outcome:
daemon starts.
Seen instead:
/usr/sbin/lighttpd: symbol lookup error: /usr/sbin/lighttpd: undefined
symbol: FAMNoExists
or
Job for lighttpd.service failed. See "systemctl status lighttpd.service" and
"journalctl -xe" for details.
$ systemctl status lighttpd.service -l
May 09 17:53:32 deunan systemd[1]: Starting Lighttpd Daemon...
May 09 17:53:32 deunan lighttpd[8229]: /usr/sbin/lighttpd: symbol lookup
error: /usr/sbin/lighttpd: undefined symbol: FAMNoExists
Other info:
`ldd /usr/sbin/lighttpd` does not report any missing shared libraries.
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: lighttpd 1.4.35-4ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-16.16-generic 3.19.3
Uname: Linux 3.19.0-16-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.17.2-0ubuntu1
Architecture: i386
Date: Sat May 9 17:51:52 2015
InstallationDate: Installed on 2013-06-08 (700 days ago)
InstallationMedia: Xubuntu 13.04 "Raring Ringtail" - Release i386 (20130423.1)
ProcEnviron:
- LANGUAGE=en_CA:en
- TERM=screen
- PATH=(custom, no user)
- LANG=en_CA.UTF-8
- SHELL=/bin/bash
+ LANGUAGE=en_CA:en
+ TERM=screen
+ PATH=(custom, no user)
+ LANG=en_CA.UTF-8
+ SHELL=/bin/bash
SourcePackage: lighttpd
UpgradeStatus: Upgraded to vivid on 2015-04-25 (14 days ago)
mtime.conffile..etc.lighttpd.conf.available.10.cgi.conf: 2013-08-02T23:17:55
mtime.conffile..etc.lighttpd.conf.available.10.fastcgi.conf:
2013-09-11T11:19:16
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https://bugs.launchpad.net/bugs/1453463
Title:
undefined symbol: FAMNoExists
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