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Date: Mon, 09 Apr 2018 17:54:33 +0200
From: Oleksandr Natalenko <oleksandr@natalenko.name>
To: Christoph Hellwig <hch@lst.de>
Cc: Kees Cook <keescook@chromium.org>, David Windsor <dave@nullcore.net>,
 "James E.J. Bottomley" <jejb@linux.vnet.ibm.com>, "Martin K. Petersen"
 <martin.petersen@oracle.com>, linux-scsi@vger.kernel.org, LKML
 <linux-kernel@vger.kernel.org>, Jens Axboe <axboe@kernel.dk>, Hannes
 Reinecke <hare@suse.com>, Johannes Thumshirn <jthumshirn@suse.de>,
 linux-block@vger.kernel.org, paolo.valente@linaro.org
Subject: Re: usercopy whitelist woe in scsi_sense_cache
In-Reply-To: <20180409093520.GB10405@lst.de>
References: <10360653.ov98egbaqx@natalenko.name>
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 <2679696.GDoj5zcZOu@natalenko.name> <20180409093520.GB10405@lst.de>
Message-ID: <20ba00cdfd1428aff13b7ea4cb42b03c@natalenko.name>
List-ID: <linux-block@vger.kernel.org>

Hi.

09.04.2018 11:35, Christoph Hellwig wrote:
> I really can't make sense of that report.

Sorry, I have nothing to add there so far, I just see the symptom of 
something going wrong in the ioctl code path that is invoked by 
smartctl, but I have no idea what's the minimal environment to reproduce 
it. I'll try to collect more info.

> And I'm also curious why
> you think 17cb960f29c2 should change anything for that code path.

Maybe, I've just mis-read that code.

Regards,
   Oleksandr