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Message-ID: <CAFLxGvx1a7wGWJGhNvW5w3acGysEnuYbpJ_v=wOLpubB47=BKA@mail.gmail.com>
Date: Sun, 13 Sep 2020 20:39:50 +0200
From: Richard Weinberger <richard.weinberger@...il.com>
To: Zhihao Cheng <chengzhihao1@...wei.com>
Cc: "zhangyi (F)" <yi.zhang@...wei.com>,
LKML <linux-kernel@...r.kernel.org>,
linux-mtd@...ts.infradead.org
Subject: Re: [PATCH] ubifs: setflags: Don't show error message when
vfs_ioc_setflags_prepare() fails
On Sun, Aug 30, 2020 at 9:23 PM Richard Weinberger
<richard.weinberger@...il.com> wrote:
>
> On Fri, Aug 28, 2020 at 5:33 AM Zhihao Cheng <chengzhihao1@...wei.com> wrote:
> >
> > Following process will trigger ubifs_err:
> > 1. useradd -m freg (Under root)
> > 2. cd /home/freg && mkdir mp (Under freg)
> > 3. mount -t ubifs /dev/ubi0_0 /home/freg/mp (Under root)
> > 4. cd /home/freg && echo 123 > mp/a (Under root)
> > 5. cd mp && chown freg a && chgrp freg a && chmod 777 a (Under root)
> > 6. chattr +i a (Under freg)
> >
> > UBIFS error (ubi0:0 pid 1723): ubifs_ioctl [ubifs]: can't modify inode
> > 65 attributes
> > chattr: Operation not permitted while setting flags on a
> >
> > This is not an UBIFS problem, it was caused by task priviliage checking
> > on file operations. Remove error message printing from kernel just like
> > other filesystems (eg. ext4), since we already have enough information
> > from userspace tools.
> >
> > Signed-off-by: Zhihao Cheng <chengzhihao1@...wei.com>
> > ---
> > fs/ubifs/ioctl.c | 1 -
> > 1 file changed, 1 deletion(-)
>
> Makes sense, thanks for fixing!
Applied to fixes.
--
Thanks,
//richard
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