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Message-ID: <20180618161657.GP30522@ZenIV.linux.org.uk>
Date: Mon, 18 Jun 2018 17:16:58 +0100
From: Al Viro <viro@...IV.linux.org.uk>
To: Jens Axboe <axboe@...nel.dk>
Cc: dgilbert@...erlog.com, Jann Horn <jannh@...gle.com>,
FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
"James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
"Martin K. Petersen" <martin.petersen@...cle.com>,
linux-block@...r.kernel.org, linux-scsi@...r.kernel.org,
linux-kernel@...r.kernel.org, kernel-hardening@...ts.openwall.com,
security@...nel.org
Subject: Re: [PATCH] sg, bsg: mitigate read/write abuse, block uaccess in
release
On Mon, Jun 18, 2018 at 09:37:01AM -0600, Jens Axboe wrote:
> > The folks responsible are no longer active in kernel development ***
> > but as far as I know the async write(command), read(response) were
> > added to bsg over 10 years ago as proof-of-concept and never properly
> > worked in this async mode. The biggest design problem with it that I'm
>
> It was born with that mode, but I don't think anyone ever really used it.
> So it might feasible to simply yank it. That said, just doing a prune
> mode at ->release() time doesn't seem like such a hard task.
"prune mode" being...?
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