linux-kernel - Re: [PATCH v6] xfs: introduce protection for drop nlink

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <202310111451303518442@zte.com.cn>
Date:   Wed, 11 Oct 2023 14:51:30 +0800 (CST)
From:   <cheng.lin130@....com.cn>
To:     <hch@...radead.org>
Cc:     <david@...morbit.com>, <djwong@...nel.org>,
        <linux-xfs@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <jiang.yong5@....com.cn>, <wang.liang82@....com.cn>,
        <liu.dong3@....com.cn>
Subject: Re: [PATCH v6] xfs: introduce protection for drop nlink

> On Tue, Oct 10, 2023 at 10:09:01AM +0800, cheng.lin130@....com.cn wrote:
> > From: Cheng Lin <cheng.lin130@....com.cn>
> > 
> > When abnormal drop_nlink are detected on the inode,
> > return error, to avoid corruption propagation.
> I know this has been through a few cycles, but wouldn't it be useful
> to have at least a little description here how that case could happen?
Unfortunately, I don't know how the underflow happened. The purpose
of this patch is to prevent the situation from getting worse and provide
users can repair it at the appropriate moment afterwards.