Public bug reported:
Hello,
First, thank you for maintaining this kernel package for RPi!
When looking at something else[1], Phil Elwell from Raspbian OS noticed
that in the Ubuntu Raspi Lunar image with a kernel v6.2,
CONFIG_MPTCP_IPV6 is not enabled.
I guess this is because CONFIG_IPV6 is compiled as a module while it
should be inlined according to the source code [2][3]:
CONFIG_IPV6 policy<{'amd64': 'y', 'arm64': 'y', 'armhf': 'y', 'ppc64el':
'y', 's390x': 'y'}>
CONFIG_IPV6 mark<ENFORCED> note<if this is a module we get a module load
for every ipv6 packet>
The note explicitly says that it should not be set as a module.
Note that the previous kernels v5.15 and v5.19 do have CONFIG_IPV6=y
(and CONFIG_MPTCP_IPV6=y) [4]. Also, the last v6.2 "generic" kernel
config is also OK (CONFIG_IPV6=y) [5].
It looks like the v6.2.0-1001.1 [6] was OK but not the next one,
6.2.0-1002.2 [7]. I hope this will help finding the "regression".
Cheers,
Matt
[1] https://github.com/raspberrypi/linux/pull/5487
[2]
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux-raspi/+git/lunar/tree/debian.raspi/config/annotations
[3]
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux-raspi/+git/lunar/tree/debian.master/config/annotations
[4] https://kernel.ubuntu.com/~kernel-ppa/config/lunar/linux-raspi/
[5] https://kernel.ubuntu.com/~kernel-ppa/config/lunar/linux/
[6]
https://kernel.ubuntu.com/~kernel-ppa/config/lunar/linux-raspi/6.2.0-1001.1/arm64-config.flavour.raspi
[7]
https://kernel.ubuntu.com/~kernel-ppa/config/lunar/linux-raspi/6.2.0-1002.2/arm64-config.flavour.raspi
** Affects: linux-raspi (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2027983
Title:
CONFIG_MPTCP_IPV6 is no longer enabled in Raspi Lunar in v6.2.0
Status in linux-raspi package in Ubuntu:
New
Bug description:
Hello,
First, thank you for maintaining this kernel package for RPi!
When looking at something else[1], Phil Elwell from Raspbian OS
noticed that in the Ubuntu Raspi Lunar image with a kernel v6.2,
CONFIG_MPTCP_IPV6 is not enabled.
I guess this is because CONFIG_IPV6 is compiled as a module while it
should be inlined according to the source code [2][3]:
CONFIG_IPV6 policy<{'amd64': 'y', 'arm64': 'y', 'armhf': 'y', 'ppc64el':
'y', 's390x': 'y'}>
CONFIG_IPV6 mark<ENFORCED> note<if this is a module we get a module load
for every ipv6 packet>
The note explicitly says that it should not be set as a module.
Note that the previous kernels v5.15 and v5.19 do have CONFIG_IPV6=y
(and CONFIG_MPTCP_IPV6=y) [4]. Also, the last v6.2 "generic" kernel
config is also OK (CONFIG_IPV6=y) [5].
It looks like the v6.2.0-1001.1 [6] was OK but not the next one,
6.2.0-1002.2 [7]. I hope this will help finding the "regression".
Cheers,
Matt
[1] https://github.com/raspberrypi/linux/pull/5487
[2]
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux-raspi/+git/lunar/tree/debian.raspi/config/annotations
[3]
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux-raspi/+git/lunar/tree/debian.master/config/annotations
[4] https://kernel.ubuntu.com/~kernel-ppa/config/lunar/linux-raspi/
[5] https://kernel.ubuntu.com/~kernel-ppa/config/lunar/linux/
[6]
https://kernel.ubuntu.com/~kernel-ppa/config/lunar/linux-raspi/6.2.0-1001.1/arm64-config.flavour.raspi
[7]
https://kernel.ubuntu.com/~kernel-ppa/config/lunar/linux-raspi/6.2.0-1002.2/arm64-config.flavour.raspi
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/2027983/+subscriptions
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