linux-kernel - Re: usercopy whitelist woe in scsi_sense

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Message-ID: <CAGXu5j+mVc6O_=GOF3YQmS4QZxeFgVPQtMxNH8sjBAhpJLjm9w@mail.gmail.com>
Date:   Thu, 5 Apr 2018 11:52:31 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Oleksandr Natalenko <oleksandr@...alenko.name>
Cc:     David Windsor <dave@...lcore.net>,
        "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: usercopy whitelist woe in scsi_sense_cache

[forcing non-HTML and resending...]

On Thu, Apr 5, 2018 at 7:33 AM, Oleksandr Natalenko
<oleksandr@...alenko.name> wrote:
>
> 05.04.2018 16:32, Oleksandr Natalenko wrote:
>>
>> "-hda sda.img -hdb sda.img"
>
>
> "-hda sda.img -hdb sdb.img", of course, I don't pass the same disk twice

Okay. My qemu gets mad about that and wants the format=raw argument,
so I'm using:

-drive file=sda.img,format=raw \
-drive file=sdb.img,format=raw \

How are you running your smartctl? I'm doing this now:

[1]   Running                 while :; do
    ( smartctl -a /dev/sda; smartctl -a /dev/sdb ) > /dev/null;
done &

I assume I'm missing something from your .config, but since I don't
boot with an initramfs, I had to tweak it a bit. I'll try again...

-Kees

-- 
Kees Cook
Pixel Security