linux-kernel - Re: [PATCH] scsi: Silence unnecessary warnings about ioctl to partition

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Date:	Fri, 15 Jun 2012 16:23:03 +0200
From:	Jan Kara <jack@...e.cz>
To:	Nick Bowler <nbowler@...iptictech.com>
Cc:	Jens Axboe <axboe@...nel.dk>, Jan Kara <jack@...e.cz>,
	LKML <linux-kernel@...r.kernel.org>, linux-scsi@...r.kernel.org,
	Paolo Bonzini <pbonzini@...hat.com>,
	James Bottomley <JBottomley@...allels.com>
Subject: Re: [PATCH] scsi: Silence unnecessary warnings about ioctl to
 partition

On Fri 15-06-12 09:58:25, Nick Bowler wrote:
> On 2012-06-15 12:51 +0200, Jens Axboe wrote:
> > On 06/15/2012 12:50 PM, Jan Kara wrote:
> > > Sometimes, warnings about ioctls to partition happen often enough that they
> > > form majority of the warnings in the kernel log and users complain. In some
> > > cases warnings are about ioctls such as SG_IO so it's not good to get rid of
> > > the warnings completely as they can ease debugging of userspace problems
> > > when ioctl is refused.
> > > 
> > > Since I have seen warnings from lots of commands, including some proprietary
> > > userspace applications, I don't think disallowing the ioctls for processes
> > > with CAP_SYS_RAWIO will happen in the near future if ever. So lets just
> > > stop warning for processes with CAP_SYS_RAWIO for which ioctl is allowed.
> > 
> > Agree, merged, finally.
> 
> Hurray!
> 
> This should be -stable material as well, as >=3.2.y kernel versions are
> affected (I think 3.0.y is OK?).
  3.0 also spits those warnings. But I'm not convinced this is really a
-stable material. I don't see anybody loosing sleep over this...

								Honza
-- 
Jan Kara <jack@...e.cz>
SUSE Labs, CR
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