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Date:   Wed, 18 Aug 2021 09:35:52 +0300
From:   Nikolay Borisov <>
To:     Kees Cook <>,
Cc:     Chris Mason <>, Josef Bacik <>,
        David Sterba <>,,
        "Gustavo A. R. Silva" <>,
        Greg Kroah-Hartman <>,
        Andrew Morton <>,,,,,,,,
        Rasmus Villemoes <>,
Subject: Re: [PATCH v2 49/63] btrfs: Use memset_startat() to clear end of

On 18.08.21 г. 9:05, Kees Cook wrote:
> In preparation for FORTIFY_SOURCE performing compile-time and run-time
> field bounds checking for memset(), avoid intentionally writing across
> neighboring fields.
> Use memset_startat() so memset() doesn't get confused about writing
> beyond the destination member that is intended to be the starting point
> of zeroing through the end of the struct.
> Cc: Chris Mason <>
> Cc: Josef Bacik <>
> Cc: David Sterba <>
> Cc:
> Signed-off-by: Kees Cook <>

Reviewed-by: Nikolay Borisov <>

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