Bug 1002494

Description of problem:

When installing or updating system, yum crashes and forces in most cases the system to reboot. I used the same machine (i7-3960X, 64 GB RAM, system on software raid) for more than one year now and until July, 20 it worked fine with different versions of Fedora and yum. A week ago I returned, made some "uge update" and then it didn't work anymore.

Yum crashes when getting the file lists from the servers of the repositories via
"/usr/bin/python /usr/libexec/urlgrabber-ext-down", ... etc.

Usually I start the command "yum clean all && yum update -y -x emacs -x emacs-common" or just "yum clean all && yum update -y" since I added the line "exclude=emacs emacs-common" in my /etc/yum.conf.
Strange enough, when stracing the whole procedure it goes through.
I also tried to repair the rpmdb in /var/lib/rpm. Nothing worked.

Today I've tried "strace -o /tmp/logbook yum provides "*/(libgphoto)""
and I've got

(process:2224): GLib-WARNING **: GError set over the top of a previous GError or uninitialized memory.
This indicates a bug in someone's code. You must ensure an error is NULL before it's set.
The overwriting error message was: Parsing filelists.xml error: Start tag expected, '<' not found

Traceback (most recent call last):
  File "/bin/yum", line 29, in <module>
    yummain.user_main(sys.argv[1:], exit_code=True)
  File "/usr/share/yum-cli/yummain.py", line 316, in user_main
    errcode = main(args)
  File "/usr/share/yum-cli/yummain.py", line 126, in main
    result, resultmsgs = base.doCommands()
  File "/usr/share/yum-cli/cli.py", line 532, in doCommands
    return self.yum_cli_commands[self.basecmd].doCommand(self, self.basecmd, self.extcmds)
  File "/usr/share/yum-cli/yumcommands.py", line 1503, in doCommand
    return base.provides(extcmds)
  File "/usr/share/yum-cli/cli.py", line 1516, in provides
    callback_has_matchfor=True)
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 3324, in searchPackageProvides
    where = self.pkgSack.searchProvides(arg)
  File "/usr/lib/python2.7/site-packages/yum/packageSack.py", line 422, in searchProvides
    return self._computeAggregateListResult("searchProvides", name)
  File "/usr/lib/python2.7/site-packages/yum/packageSack.py", line 595, in _computeAggregateListResult
    sackResult = apply(method, args)
  File "/usr/lib/python2.7/site-packages/yum/sqlitesack.py", line 1404, in searchProvides
    ret = self.searchPrco(name, "provides")
  File "/usr/lib/python2.7/site-packages/yum/sqlitesack.py", line 46, in newFunc
    return func(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/yum/sqlitesack.py", line 1397, in searchPrco
    results.extend(self.searchFiles(n))
  File "/usr/lib/python2.7/site-packages/yum/sqlitesack.py", line 46, in newFunc
    return func(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/yum/sqlitesack.py", line 934, in searchFiles
    self.populate(repo, mdtype='filelists')
  File "/usr/lib/python2.7/site-packages/yum/yumRepo.py", line 260, in populate
    dobj = repo_cache_function(xml, csum)
  File "/usr/lib64/python2.7/site-packages/sqlitecachec.py", line 54, in getFilelists
    self.repoid))
TypeError: Parsing filelists.xml error: Document is empty


So this may be also a python problem.


Version-Release number of selected component (if applicable):

[root@bl4ckh0l3 ~]# rpm -qa | sort | grep -i yum
PackageKit-yum-0.8.9-6.fc19.x86_64
PackageKit-yum-plugin-0.8.9-6.fc19.x86_64
yum-3.4.3-106.fc19.noarch
yumex-3.0.10-2.fc19.noarch
yum-langpacks-0.3.4-1.fc19.noarch
yum-metadata-parser-1.1.4-8.fc19.x86_64
yum-utils-1.1.31-17.fc19.noarch