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From: Roberto Sassu via Ocfs2-devel <ocfs2-devel@oss.oracle.com>
To: "Valentin Vidić" <vvidic@valentin-vidic.from.hr>
Cc: ocfs2-devel@oss.oracle.com
Subject: Re: [Ocfs2-devel] ocfs2 xattr
Date: Tue, 07 Mar 2023 08:59:15 +0100	[thread overview]
Message-ID: <e848f2fbff1677023128afe4351e5af28576c058.camel@huaweicloud.com> (raw)
In-Reply-To: <ZAZtYjHlhM6IAVpc@valentin-vidic.from.hr>

On Mon, 2023-03-06 at 23:46 +0100, Valentin Vidić wrote:
> On Mon, Mar 06, 2023 at 10:40:35PM +0100, Valentin Vidić wrote:
> > I suppose the fix would be to change the default value to -EOPNOTSUPP?
> 
> Confirmed, new default value fixes the crash. It is essentialy the same
> problem as this one in ceph:
> 
> https://github.com/torvalds/linux/commit/7f5056b9e7b71149bf11073f00a57fa1ac2921a9
> 
> I'll try to prepare a patch...

Ok, yes. It is a known problem. I tried to fix it several times, but no
luck yet.

https://lore.kernel.org/bpf/20221115175652.3836811-1-roberto.sassu@huaweicloud.com/

https://lore.kernel.org/bpf/20221207172434.435893-1-roberto.sassu@huaweicloud.com/

If you change the default value to -EOPNOTSUPP, that would address the
problem if no eBPF program attaches to the inode_init_security hook. If
one does and returns zero or any positive value, the kernel cannot
handle it.

Roberto


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      reply	other threads:[~2023-03-07  7:59 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <ZASjOpsoM+nEx/o8@valentin-vidic.from.hr>
2023-03-06  9:13 ` [Ocfs2-devel] ocfs2 xattr Roberto Sassu via Ocfs2-devel
2023-03-06 10:45   ` Valentin Vidić via Ocfs2-devel
2023-03-06 16:58     ` Roberto Sassu via Ocfs2-devel
2023-03-06 21:40       ` Valentin Vidić via Ocfs2-devel
2023-03-06 22:46         ` Valentin Vidić via Ocfs2-devel
2023-03-07  7:59           ` Roberto Sassu via Ocfs2-devel [this message]

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