Bug#962254: NFS(v4) broken at 4.19.118-2

From	Elliott Mitchell <ehem+debian@m5p.com>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#962254: NFS(v4) broken at 4.19.118-2
Date	2020-06-05 07:50 +0200
Message-ID	<AedoR-7Uq-1@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Package: src:linux
Version: 4.19.118+2
Severity: important

Somewhere between linux-image-4.19.0-8-amd64/4.19.98+1+deb10u1 and
linux-image-4.19.0-9-amd64/4.19.118+2 NFS, in particular v4 got broken.
Mounting an appropriate filesystem became unreliable, and once mounted
behavior is unpredictable.

In particular in the problematic case `umask 022 ; touch foo ; ls -l foo`
yields a -rw-rw-rw- file.

This occurs if *both* the server *and* client are on 4.19.118+2.  I have
confirmed this does NOT occur if the server is on a 4.9 kernel.  I have
also confirmed this does NOT occur if the client is on a 4.9 or
4.19.98+1+deb10u1 kernel.


-- 
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  \_CS\   |  _____  -O #include <stddisclaimer.h> O-   _____  |   /  _/
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Bug#962254: NFS(v4) broken at 4.19.118-2 Elliott Mitchell <ehem+debian@m5p.com> - 2020-06-05 07:50 +0200
  Processed: Re: Bug#962254: NFS(v4) broken at 4.19.118-2 "Debian Bug Tracking System" <owner@bugs.debian.org> - 2020-06-05 08:50 +0200
  Bug#962254: NFS(v4) broken at 4.19.118-2 Salvatore Bonaccorso <carnil@debian.org> - 2020-06-05 08:50 +0200
    Bug#962254: NFS(v4) broken at 4.19.118-2 Elliott Mitchell <ehem+debian@m5p.com> - 2020-06-05 20:20 +0200
      Bug#962254: NFS(v4) broken at 4.19.118-2 Salvatore Bonaccorso <carnil@debian.org> - 2020-06-05 20:40 +0200
        Bug#962254: NFS(v4) broken at 4.19.118-2 Elliott Mitchell <ehem+debian@m5p.com> - 2020-06-06 00:40 +0200
        Bug#934160: Bug#962254: NFS(v4) broken at 4.19.118-2 Elliott Mitchell <ehem+debian@m5p.com> - 2020-06-09 04:00 +0200
  Processed: Re: Bug#962254: NFS(v4) broken at 4.19.118-2 "Debian Bug Tracking System" <owner@bugs.debian.org> - 2020-06-09 04:00 +0200
  Bug#962254: Umask ignored when mounting NFSv4.2 share of an exported ZFS (with acltype=off) (was: Re: Bug#962254: NFS(v4) broken at 4.19.118-2) Salvatore Bonaccorso <carnil@debian.org> - 2020-06-13 15:00 +0200
  Bug#962254: Umask ignored when mounting NFSv4.2 share of an exported ZFS (with acltype=off) (was: Re: Bug#962254: NFS(v4) broken at 4.19.118-2) "J. Bruce Fields" <bfields@redhat.com> - 2020-06-15 17:10 +0200
    Bug#962254: Umask ignored when mounting NFSv4.2 share of an exported Filesystem with noacl (was: Re: Bug#962254: NFS(v4) broken at 4.19.118-2) Salvatore Bonaccorso <carnil@debian.org> - 2020-06-15 21:00 +0200
  Bug#962254: Umask ignored when mounting NFSv4.2 share of an exported Filesystem with noacl (was: Re: Bug#962254: NFS(v4) broken at 4.19.118-2) "J. Bruce Fields" <bfields@redhat.com> - 2020-06-16 04:50 +0200
    Bug#962254: Umask ignored when mounting NFSv4.2 share of an exported Filesystem with noacl (was: Re: Bug#962254: NFS(v4) broken at 4.19.118-2) Salvatore Bonaccorso <carnil@debian.org> - 2020-06-16 07:40 +0200
    Bug#962254: Umask ignored when mounting NFSv4.2 share of an exported Filesystem with noacl (was: Re: Bug#962254: NFS(v4) broken at 4.19.118-2) Salvatore Bonaccorso <carnil@debian.org> - 2020-06-16 18:30 +0200
      Bug#962254: Umask ignored when mounting NFSv4.2 share of an exported Filesystem with noacl (was: Re: Bug#962254: NFS(v4) broken at 4.19.118-2) "J. Bruce Fields" <bfields@redhat.com> - 2020-06-17 03:10 +0200
        Bug#962254: Umask ignored when mounting NFSv4.2 share of an exported Filesystem with noacl Salvatore Bonaccorso <carnil@debian.org> - 2020-06-17 07:10 +0200
  Bug#962254: Umask ignored when mounting NFSv4.2 share of an exported Filesystem with noacl (was: Re: Bug#962254: NFS(v4) broken at 4.19.118-2) Salvatore Bonaccorso <carnil@debian.org> - 2020-06-16 07:40 +0200
  Bug#962254: Umask ignored when mounting NFSv4.2 share of an exported Filesystem with noacl (was: Re: Bug#962254: NFS(v4) broken at 4.19.118-2) "J. Bruce Fields" <bfields@redhat.com> - 2020-06-17 17:40 +0200
    Bug#962254: Umask ignored when mounting NFSv4.2 share of an exported Filesystem with noacl (was: Re: Bug#962254: NFS(v4) broken at 4.19.118-2) Andreas Gruenbacher <agruenba@redhat.com> - 2020-06-17 19:00 +0200

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