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

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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