linux-kernel - Re: [PATCH] block: Replace bio_check_ro()'s WARN

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Message-ID: <20191125174037.GA768@infradead.org>
Date:   Mon, 25 Nov 2019 09:40:37 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     Kees Cook <keescook@...omium.org>
Cc:     Christoph Hellwig <hch@...radead.org>,
        Jens Axboe <axboe@...nel.dk>,
        syzbot+21cfe1f803e0e158acf1@...kaller.appspotmail.com,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] block: Replace bio_check_ro()'s WARN_ON()

So I looked at this a bit, and doing the right thing (TM) will be
a little invase and thus not for 5.5.

But the 5.5. queue already has a patch from Mikulas Patocka:
8b2ded1c94c ("block: don't warn when doing fsync on read-only devices")
which should deal with this issue, and in fact I can't trigger the
WARN_ON with Jens' latest tree.