linux-kernel - Re: [PATCH] scsi_debug: Fix off-by-one bug when unmapping region

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Message-ID: <yq1d32ph515.fsf@sermon.lab.mkp.net>
Date:	Fri, 17 Aug 2012 12:11:50 -0400
From:	"Martin K. Petersen" <martin.petersen@...cle.com>
To:	Lukas Czerner <lczerner@...hat.com>
Cc:	linux-scsi@...r.kernel.org, JBottomley@...allels.com,
	tytso@....edu, pbonzini@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scsi_debug: Fix off-by-one bug when unmapping region

>>>>> "Lukas" == Lukas Czerner <lczerner@...hat.com> writes:

Lukas> Currently it is possible to unmap one more block than user
Lukas> requested to due to the off-by-one error in unmap_region(). This
Lukas> is probably due to the fact that the end variable despite its
Lukas> name actually points to the last block to unmap + 1. However in
Lukas> the condition it is handled as the last block of the region to
Lukas> unmap.

Acked-by: Martin K. Petersen <martin.petersen@...cle.com>

-- 
Martin K. Petersen	Oracle Linux Engineering
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