[Bugs] [Bug 1619423] cli: Command `gluster volume statedump <volname>` dumps core

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1619423

Worker Ant <bugzilla-bot at gluster.org> changed:

           What    |Removed                     |Added
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             Status|POST                        |MODIFIED



--- Comment #2 from Worker Ant <bugzilla-bot at gluster.org> ---
COMMIT: https://review.gluster.org/20867 committed in master by "Shyamsundar
Ranganathan" <srangana at redhat.com> with a commit message- cli: Fix invalid
access of option_str variable

In function cli_cmd_volume_statedump_options_parse if
the wordcount of arguments is exactly 3, then option_str
would remain NULL, and hence the function will generate
a segmentation fault on the strstr check in its body.

This can be triggered when we run the command,
`gluster volume statedump <volname>`

The fix is to check if option_str is non-NULL before use
and also to pass in a duplicated empty string to the dict
key "options" when this is NULL.

Fixes: bz#1619423
Change-Id: Ic029ab60b64890d92c7a0876a638929495d3aa59
Signed-off-by: ShyamsundarR <srangana at redhat.com>

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