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Message-ID: <20070814092942.GA14324@clipper.ens.fr>
Date:	Tue, 14 Aug 2007 11:29:42 +0200
From:	Nicolas George <nicolas.george@....fr>
To:	linux-kernel@...r.kernel.org,
	user-mode-linux-devel@...ts.sourceforge.net, jdike@...ux.intel.com,
	mtk-manpages@....net

Cc: 
Bcc: 
Subject: Re: UML/man: BLKGETSIZE takes a long, not an int
Reply-To: 
In-Reply-To: <20070813124247.GA7414@...-seel.salle-s.org>

Hi.

I fear that my bug-report yesterday was very badly written, with me writing
to the wrong mailing-list and all.

I was saying:

> I found a type mismatch in UML that makes host block devices unusable as ubd
> devices on x86_64 and other 64 bits systems (segfault of the mm subsystem):
> 
> In block/ioctl.c, the following lines show that the BLKGETSIZE ioctl expects
> a pointer to a long:
> 
> 	case BLKGETSIZE:
> 		if ((bdev->bd_inode->i_size >> 9) > ~0UL)
> 			return -EFBIG;
> 		return put_ulong(arg, bdev->bd_inode->i_size >> 9);
> 
> In arch/um/os-Linux/file.c, os_file_size calls it with an int.
> 
> The ioctl_list man page should be fixed as well.

I add that the bug was still there yesterday in the git repository.

I join the patch to file.c.

Regards,

-- 
  Nicolas George

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