linux-ext4 - Re: [PATCH] e2image: fix overflow in l2 table processing

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Message-ID: <YJXEEhxkGdMEdRGQ@mit.edu>
Date:   Fri, 7 May 2021 18:49:54 -0400
From:   "Theodore Ts'o" <tytso@....edu>
To:     Artem Blagodarenko <artem.blagodarenko@...il.com>
Cc:     linux-ext4@...r.kernel.org, adilger.kernel@...ger.ca,
        Alexey Lyashkov <c17817@...y.com>,
        Artem Blagodarenko <c17828@...y.com>
Subject: Re: [PATCH] e2image: fix overflow in l2 table processing

On Thu, Apr 22, 2021 at 01:24:48AM -0400, Artem Blagodarenko wrote:
> For a large partition during e2image capture process
> it is possible to overflow offset at multiply operation.
> This leads to the situation when data is written to the
> position at the start of the image instead of the image end.
> 
> Let's use the right cast to avoid integer overflow.
> 
> Signed-off-by: Alexey Lyashkov <c17817@...y.com>
> Signed-off-by: Artem Blagodarenko <c17828@...y.com>
> HPE-bug-id: LUS-9368

Thanks, applied.

					- Ted