From: Josef Bacik <jbacik@fusionio.com>
Date: Fri, 17 May 2013 18:06:51 +0000 (-0400)
Subject: Btrfs: make sure roots are assigned before freeing their nodes
X-Git-Tag: v3.10-rc2~7^2^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=655b09fe540b73edeaabfb4c2d700be51a1f8bce;p=pandora-kernel.git

Btrfs: make sure roots are assigned before freeing their nodes

If we fail to load the chunk tree we'll call free_root_pointers, except we may
not have assigned the roots for the dev_root/extent_root/csum_root yet, so we
could NULL pointer deref at this point.  Just add checks to make sure these
roots are set to keep us from panicing.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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