From: J. Bruce Fields <bfields@citi.umich.edu>
Date: Tue, 22 Jan 2008 22:40:42 +0000 (-0500)
Subject: nfsd: more careful input validation in nfsctl write methods
X-Git-Tag: v2.6.25-rc1~1072^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=87d26ea7771ad637035e6bd5a2700d81ee9162da;p=pandora-kernel.git

nfsd: more careful input validation in nfsctl write methods

Neil Brown points out that we're checking buf[size-1] in a couple places
without first checking whether size is zero.

Actually, given the implementation of simple_transaction_get(), buf[-1]
is zero, so in both of these cases the subsequent check of the value of
buf[size-1] will catch this case.

But it seems fragile to depend on that, so add explicit checks for this
case.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Acked-by: NeilBrown <neilb@suse.de>
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