linux-kernel - [REGRESSION 4.13-rc] NFS returns -EACCESS at the first read

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-next>] [day] [month] [year] [list]

Message-ID: <s5h4ltzl5oq.wl-tiwai@suse.de>
Date:   Wed, 26 Jul 2017 14:54:13 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     Trond Myklebust <trond.myklebust@...marydata.com>
Cc:     Anna Schumaker <anna.schumaker@...app.com>,
        linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [REGRESSION 4.13-rc] NFS returns -EACCESS at the first read

Hi,

I seem hitting a regression of NFS client on the today's Linus git
tree.  The symptom is that the file read over NFS returns occasionally
-EACCESS at the first read.  When I try to read the same file again
(or do some other thing), I can read it successfully.

The git bisection leaded to the commit
bd8b2441742b49c76bec707757bd9c028ea9838e
    NFS: Store the raw NFS access mask in the inode's access cache


Any further hint for debugging?


thanks,

Takashi