title: dnf crashes with segmentation fault
body: <p>Fedora 4.10.8-200.fc25.i686+PAE</p>
  
  <p>dnf is crashing with 'segmentation fault (core dumped)'.</p>
  
  <p>I have tried to run 'dnf clean all' without success.</p>
  
  <p>When running 'dnf upgrade', this is logged in dnf.log:</p>
  
  <pre><code>Apr 30 20:17:21 INFO --- logging initialized ---
  Apr 30 20:17:21 DDEBUG timer: config: 7 ms
  Apr 30 20:17:21 DEBUG cachedir: /var/cache/dnf
  Apr 30 20:17:21 DEBUG Loaded plugins: reposync, Query, noroot, needs-restarting, protected_packages, builddep, playground, config-manager, copr, download, system-upgrade, debuginfo-install, generate_completion_cache
  Apr 30 20:17:21 DEBUG DNF version: 1.1.10
  Apr 30 20:17:21 DDEBUG Command: dnf upgrade
  Apr 30 20:17:21 DDEBUG Installroot: /
  Apr 30 20:17:21 DDEBUG Releasever: 25
  Apr 30 20:17:21 DDEBUG Base command: upgrade
  Apr 30 20:17:21 DDEBUG Extra commands: []
  Apr 30 20:17:51 DDEBUG repo: downloading from remote: updates, _Handle: metalnk: https://mirrors.fedoraproject.org/metalink?repo=updates-released-f25&amp;arch=i386, mlist: None, urls [].
  </code></pre>
  
  <p>This is logged in 'messages':</p>
  
  <pre><code>Apr 30 20:17:51 emil2 audit: ANOM_ABEND auid=0 uid=0 gid=0 ses=10 pid=23817 comm="dnf" exe="/usr/libexec/system-python" sig=11
  Apr 30 20:17:51 emil2 kernel: dnf[23817]: segfault at 24 ip b64a9c81 sp bfe10cc0 error 4 in libssl3.so[b6496000+49000]
  Apr 30 20:17:51 emil2 abrt-hook-ccpp: Process 23817 (system-python) of user 0 killed by SIGSEGV - dumping core
  Apr 30 20:17:52 emil2 abrt-server: Deleting problem directory ccpp-2017-04-30-20:17:51-23817 (dup of ccpp-2017-04-28-22:02:01-6627)
  Apr 30 20:17:52 emil2 dbus-daemon[721]: [system] Activating service name='org.freedesktop.problems' requested by ':1.699' (uid=0 pid=23827 comm="/usr/bin/python3 /usr/bin/abrt-action-notify -d /v") (using servicehelper)
  Apr 30 20:17:52 emil2 dbus-daemon[721]: [system] Successfully activated service 'org.freedesktop.problems'
  </code></pre>
  
  <p>What can I do to troubleshoot?</p>