Note: this is the same as 206204a in
linux-git.
Given some pathologically compressed data, lz4 could possibly decide to
wrap a few internal variables, causing unknown things to happen. Catch
this before the wrapping happens and abort the decompression.
Reported-by: "Don A. Bailey" <donb@securitymouse.com>
Signed-off-by: Holger Schurig <holgerschurig@gmail.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>