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Date: Sun, 30 Aug 2020 21:23:49 +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 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! BTW: I didn't forget about the other valuable fixes from you, in the next two weeks I'll hopefully find more time for reviewing/testing. :-) -- Thanks, //richard
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