Bug 845269 - [lvmetad] Clients segfaulting on incorrect repsone from lvmetad
[lvmetad] Clients segfaulting on incorrect repsone from lvmetad
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: lvm2 (Show other bugs)
Unspecified Unspecified
high Severity unspecified
: rc
: ---
Assigned To: Petr Rockai
Cluster QE
Depends On: 845259
  Show dependency treegraph
Reported: 2012-08-02 10:04 EDT by Marian Csontos
Modified: 2013-02-21 03:13 EST (History)
11 users (show)

See Also:
Fixed In Version: lvm2-2.02.98-1.el6
Doc Type: Bug Fix
Doc Text:
When an LVM command encountered a problem talking to lvmetad, the command could crash in certain circumstances. This problem has been fixed.
Story Points: ---
Clone Of: 845259
Last Closed: 2013-02-21 03:13:12 EST
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
full gbd backtrace (6.38 KB, text/plain)
2012-08-02 10:06 EDT, Marian Csontos
no flags Details

  None (edit)
Description Marian Csontos 2012-08-02 10:04:00 EDT
Description of problem:
Incorrect response from lvmetad is not handled correctly and causes segfault.
Parsing procedure returns NULL pointer which is dereferenced later:

    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);                              

Here the r.cft is 0x0

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

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:

Expected results:
error message or retry?

Additional info:
Comment 1 Marian Csontos 2012-08-02 10:06:21 EDT
Created attachment 601956 [details]
full gbd backtrace
Comment 3 Petr Rockai 2012-09-26 15:11:34 EDT
This should be fixed upstream now.
Comment 7 Corey Marthaler 2013-01-24 16:21:24 EST
Have not seen any segfaults during the latest LVM regression testing while running with lvmetad turned on. Marking this verified (SanityOnly).
Comment 8 errata-xmlrpc 2013-02-21 03:13:12 EST
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.


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