tree af278af23547c0d042af1da1fad1dd88292fdfc1
parent 9cc97d646216b6f2473fa4ab9f103514b86c6814
author David Sterba <dsterba@suse.cz> 1414772288 +0100
committer Chris Mason <clm@fb.com> 1422933639 -0800

btrfs: more superblock checks, lower bounds on devices and sectorsize/nodesize

I received a few crafted images from Jiri, all got through the recently
added superblock checks. The lower bounds checks for num_devices and
sector/node -sizes were missing and caused a crash during mount.

Tools for symbolic code execution were used to prepare the images
contents.

Reported-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>