linux-kernel - Re: [PATCH 1/2] statfs: Enforce statfs[64] structure intialization

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Date:   Thu, 11 May 2023 20:45:13 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Ilya Leoshkevich <iii@...ux.ibm.com>
Cc:     Al Viro <viro@...iv.linux.org.uk>, linux-kernel@...r.kernel.org,
        Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        stable@...r.kernel.org
Subject: Re: [PATCH 1/2] statfs: Enforce statfs[64] structure intialization

On Thu,  4 May 2023 16:40:20 +0200 Ilya Leoshkevich <iii@...ux.ibm.com> wrote:

> s390's struct statfs and struct statfs64 contain padding, which
> field-by-field copying does not set. Initialize the respective structs
> with zeros before filling them and copying them to userspace, like it's
> already done for the compat versions of these structs.
> 
> Found by KMSAN.
> 

Reviewed-by: Andrew Morton <akpm@...ux-foundation.org>