linux-kernel - Re: [PATCH 1/1] Revert "iomap: fall back to buffered writes for invalidation failures"

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Message-ID: <20220209150904.GA22025@lst.de>
Date:   Wed, 9 Feb 2022 16:09:04 +0100
From:   Christoph Hellwig <hch@....de>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     linux-kernel@...r.kernel.org, Stable <stable@...r.kernel.org>,
        Christoph Hellwig <hch@....de>,
        Dave Chinner <dchinner@...hat.com>,
        Goldwyn Rodrigues <rgoldwyn@...e.com>,
        "Darrick J . Wong" <darrick.wong@...cle.com>,
        Bob Peterson <rpeterso@...hat.com>,
        Damien Le Moal <damien.lemoal@....com>,
        Theodore Ts'o <tytso@....edu>,
        Andreas Gruenbacher <agruenba@...hat.com>,
        Ritesh Harjani <riteshh@...ux.ibm.com>,
        Johannes Thumshirn <jth@...nel.org>, linux-xfs@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
        cluster-devel@...hat.com,
        syzbot+0ed9f769264276638893@...kaller.appspotmail.com
Subject: Re: [PATCH 1/1] Revert "iomap: fall back to buffered writes for
 invalidation failures"

On Wed, Feb 09, 2022 at 08:52:43AM +0000, Lee Jones wrote:
> This reverts commit 60263d5889e6dc5987dc51b801be4955ff2e4aa7.
> 
> Reverting since this commit opens a potential avenue for abuse.
> 
> The C-reproducer and more information can be found at the link below.
> 
> With this patch applied, I can no longer get the repro to trigger.

Well, maybe you should actually debug and try to understand what is
going on before blindly reverting random commits.