From: Alex Elder <elder@inktank.com>
Date: Wed, 6 Feb 2013 19:11:38 +0000 (-0600)
Subject: rbd: prevent bytes transferred overflow
X-Git-Tag: v3.9-rc1~41^2~21^2~2
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1ceae7ef0fd00c965a2257c6e9eb497ca91f01c7;p=pandora-kernel.git

rbd: prevent bytes transferred overflow

In rbd_obj_read_sync(), verify the number of bytes transferred won't
exceed what can be represented by a size_t before using it to
indicate the number of bytes to copy to the result buffer.

(The real motivation for this is to prepare for the next patch.)

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
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