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Description of problem:
Incorrect response from lvmetad is not handled correctly and causes segfault.
Parsing procedure returns NULL pointer which is dereferenced later:

<pre>
    static inline const char *daemon_reply_str(daemon_reply r, const char *path, const      ...|char *def) {
            return dm_config_find_str(r.cft->root, path, def);                              
    }
</pre>

Here the r.cft is 0x0

Version-Release number of selected component (if applicable):
lvm2-2.02.97-0.151

How reproducible:
low reproducibility of original lvmetad bug.
but this would crash 100% of time when wrong data are received.

Steps to Reproduce:
Bug 845259 in lvmetad would crash client.
  
Actual results:
segfault

Expected results:
error message or retry?

Additional info:

Created attachment 601956 [details]
full gbd backtrace

This should be fixed upstream now.

Have not seen any segfaults during the latest LVM regression testing while running with lvmetad turned on. Marking this verified (SanityOnly).

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2013-0501.html