linux-kernel - Re: ubifs: regression: unable to mount ubifs

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Message-ID: <576590E3.2090603@nod.at>
Date:	Sat, 18 Jun 2016 20:20:19 +0200
From:	Richard Weinberger <richard@....at>
To:	Hauke Mehrtens <hauke@...ke-m.de>, viro@...iv.linux.org.uk,
	Artem Bityutskiy <dedekind1@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Brian Norris <computersforpeace@...il.com>
Cc:	MTD Maling List <linux-mtd@...ts.infradead.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: ubifs: regression: unable to mount ubifs

Hi!

Am 18.06.2016 um 20:19 schrieb Hauke Mehrtens:
> The commit 322ea0bb "mtd: switch ubi_open_volume_path() to vfs_stat()"
> breaks mounting ubifs volumes for me.
> 
> On kernel 4.7-rc3 I am getting the following error when trying to mount
> an ubifs volume. This volume in on a ubi file system which exports it as
> a mtd partition.
> 
> root@...e:/# mkdir /tmp/test
> root@...e:/# mount -t ubifs /dev/ubi0_10 /tmp/test/
> [  178.782184] UBIFS error (pid: 955): cannot open "/dev/ubi0_10", error
> -22mount: mounting /dev/ubi0_10 on /tmp/test/ failed: Invalid argument
> root@...e:/#
> 
> In the function ubi_open_volume_path() the call to vfs_stat() returns
> -EFAULT.
> 
> After I reverted commit 322ea0bb it works again.

Fixes for this are already in Linus' tree and will be part of -rc4. :-)

Thanks,
//richard