Public bug reported:
[Impact]
On unload the spl module is not properly cleaning up the registered
sysctl entries with kernel 6.5 in Mantic:
06:58 ubuntu@mantic$ sudo modprobe spl
modprobe: ERROR: could not insert 'spl': Protocol driver not attached
06:58 ubuntu@mantic$ sudo dmesg | grep duplicate
[ 152.587197] sysctl duplicate entry: /kernel/spl/kmem/slab_kvmem_total
[Test case]
Uninstall zfsutils-linux and try to `modprobe -r zfs; modprobe -r spl`,
then `modprobe zfs` again and you should see the error (with a failure
to load spl again).
At this point it is possible to load spl again only after a reboot.
[Fix]
Properly cleanup all the registered sysctl entries when the spl module
is unloaded.
[Regression potential]
We may experience regressions in systems that are using zfs with the 6.5
kernel.
ProblemType: Bug
DistroRelease: Ubuntu 23.10
Package: zfs-dkms 2.2.0~rc3-0ubuntu3
ProcVersionSignature: User Name 6.5.0-4.4-generic 6.5.0
Uname: Linux 6.5.0-4-generic x86_64
ApportVersion: 2.27.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: unknown
CloudArchitecture: x86_64
CloudBuildName: server
CloudID: nocloud
CloudName: unknown
CloudPlatform: nocloud
CloudSerial: 20230823
CloudSubPlatform: config-disk (/dev/vdb)
Date: Wed Sep 6 07:06:33 2023
PackageArchitecture: all
ProcEnviron:
LANG=C.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: zfs-linux
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: zfs-linux (Ubuntu)
Importance: Undecided
Status: New
** Affects: zfs-linux (Ubuntu Mantic)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug cloud-image mantic third-party-packages
** Also affects: zfs-linux (Ubuntu Mantic)
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to zfs-linux in Ubuntu.
https://bugs.launchpad.net/bugs/2034510
Title:
spl fails to unregister sysctl entries
Status in zfs-linux package in Ubuntu:
New
Status in zfs-linux source package in Mantic:
New
Bug description:
[Impact]
On unload the spl module is not properly cleaning up the registered
sysctl entries with kernel 6.5 in Mantic:
06:58 ubuntu@mantic$ sudo modprobe spl
modprobe: ERROR: could not insert 'spl': Protocol driver not attached
06:58 ubuntu@mantic$ sudo dmesg | grep duplicate
[ 152.587197] sysctl duplicate entry: /kernel/spl/kmem/slab_kvmem_total
[Test case]
Uninstall zfsutils-linux and try to `modprobe -r zfs; modprobe -r
spl`, then `modprobe zfs` again and you should see the error (with a
failure to load spl again).
At this point it is possible to load spl again only after a reboot.
[Fix]
Properly cleanup all the registered sysctl entries when the spl module
is unloaded.
[Regression potential]
We may experience regressions in systems that are using zfs with the
6.5 kernel.
ProblemType: Bug
DistroRelease: Ubuntu 23.10
Package: zfs-dkms 2.2.0~rc3-0ubuntu3
ProcVersionSignature: User Name 6.5.0-4.4-generic 6.5.0
Uname: Linux 6.5.0-4-generic x86_64
ApportVersion: 2.27.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: unknown
CloudArchitecture: x86_64
CloudBuildName: server
CloudID: nocloud
CloudName: unknown
CloudPlatform: nocloud
CloudSerial: 20230823
CloudSubPlatform: config-disk (/dev/vdb)
Date: Wed Sep 6 07:06:33 2023
PackageArchitecture: all
ProcEnviron:
LANG=C.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: zfs-linux
UpgradeStatus: No upgrade log present (probably fresh install)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/2034510/+subscriptions
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