linux-kernel - Re: [PATCH v4] bsg: mitigate read/write abuse, block uaccess in release

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Message-ID: <CA+55aFxeJxC0SNv9o4RYZkwmRA15SBg0cw=kHgO-omAjg2RDgQ@mail.gmail.com>
Date:   Mon, 16 Jul 2018 10:19:19 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Jann Horn <jannh@...gle.com>
Cc:     Christoph Hellwig <hch@...radead.org>,
        Jens Axboe <axboe@...nel.dk>,
        FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
        linux-block <linux-block@...r.kernel.org>,
        Linux SCSI List <linux-scsi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Doug Gilbert <dgilbert@...erlog.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        James Bottomley <jejb@...ux.vnet.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Kernel Hardening <kernel-hardening@...ts.openwall.com>,
        security@...nel.org
Subject: Re: [PATCH v4] bsg: mitigate read/write abuse, block uaccess in release

On Mon, Jul 16, 2018 at 9:58 AM Jann Horn <jannh@...gle.com> wrote:
>
> I thought Christoph wanted this one for stable. Maybe I misunderstood.

If we can remove it in mainline, we should remove it in stable too.
There's no situation where compatibility would matter in stable but
not in mainline.

            Linus