From:   Chuck Lever III <chuck.lever@oracle.com>
To:     Trevor Hemsley <trevor.hemsley@ntlworld.com>
CC:     Linux NFS Mailing List <linux-nfs@vger.kernel.org>
Subject: Re: Crash in nfsd on kernel > 5.19
Thread-Topic: Crash in nfsd on kernel > 5.19
Thread-Index: AQHZV4sVEzmy0Wt5jECNGFBEfkrEpq78gvUA
Date:   Wed, 15 Mar 2023 23:51:13 +0000
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> On Mar 15, 2023, at 6:01 PM, Trevor Hemsley <trevor.hemsley@ntlworld.com>=
 wrote:
>=20
> I have a problem using a media player called Kodi when it plays a media f=
ile that is hosted on an NFS share. Reverting to kernel-5.19.16-200.fc36.x8=
6_64 fixes the problem so I suspect this is a change made between 5.19 and =
6.0.
>=20
> I'm running libreelec 10.$latest as the client, which is distro specifica=
lly to allow kodi to run, and the problem is easily reproducible from there=
. All it takes is to play any movie/tv episode from an NFS share on a Fedor=
a 36 host and attempt to fast forward the motion. Within a second or two, i=
t crashes nfsd on the host. This started happening when Fedora updated from=
 kernel 5.19.x to 6.0.x. My first crash was on kernel 6.0.9 and it has happ=
ened with each 6.0.x minor update and with 6.1.x since.
>=20
> I raised a bugzilla entry https://bugzilla.redhat.com/show_bug.cgi?id=3D2=
148276 to report this and it has seen no traction. There are a few crashes =
detailed in the ticket. Several others have "me too'ed" that bugzilla and t=
he latest example is from an untainted kernel 6.1.15-200.fc37.x86_64. I fig=
ure it's time to try reporting it here instead.

This is probably a duplicate of https://bugzilla.redhat.com/show_bug.cgi?id=
=3D2150630
which is being actively worked right now.


> Am happy to test any patches if I can make them apply to the current Fedo=
ra 6.1.18 (latest) source

--
Chuck Lever