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Date:   Tue, 18 May 2021 14:06:02 -0700
From:   Stephen Hemminger <stephen@networkplumber.org>
To:     linux-nfs@vger.kernel.org
Subject: Fw: [Bug 213135] New: NFS service not working with linux 5.4
Message-ID: <20210518140602.018d3908@hermes.local>
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Begin forwarded message:

Date: Tue, 18 May 2021 19:30:28 +0000
From: bugzilla-daemon@bugzilla.kernel.org
To: stephen@networkplumber.org
Subject: [Bug 213135] New: NFS service not working with linux 5.4


https://bugzilla.kernel.org/show_bug.cgi?id=213135

            Bug ID: 213135
           Summary: NFS service not working with linux 5.4
           Product: Networking
           Version: 2.5
    Kernel Version: linux 5.4
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Other
          Assignee: stephen@networkplumber.org
          Reporter: hbhuwania93@gmail.com
        Regression: No

I am running a linux 5.4 kernel image. 

I am seeing an issue with NFS service crashing randomly. NFS version I am using
is 2.3.4 

Apparently the rpc.mountd crashes randomly and dont have a clear picture on
what is happening. I tried manually launching this daemon and I see below error
traceback:

root@HostName-637562903921812352:/etc# /usr/sbin/rpc.mountd -p 9000 -F -d all

rpc.mountd: Version 2.3.4 starting

rpc.mountd: nfsd_fh: inbuf '* 6 \x8fd3a09e776c46d09e8b8ca1b0e895ec'

rpc.mountd: v4root_create: path '/' flags 0x12407

rpc.mountd: v4root_create: path '/usr' flags 0x10407

rpc.mountd: v4root_create: path '/usr/srvroot' flags 0x10407

*** stack smashing detected ***: <unknown> terminated

Aborted

Any suggestions why NFS is behaving this way?

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