sys-kernel/coreos-modules: Enable CONFIG_FTRACE_SYSCALLS

[arilou]

This config enables the syscall tracepoints which are mainly used by different security and observability tools.

Related to: flatcar/Flatcar#1617

[tormath1]

Thanks! As this configuration has moved into the commonconfig file, we can remove it from the the amd64 config file as well:

scripts/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/amd64_defconfig-6.6

Line 44 in 8d41832

CONFIG_FTRACE_SYSCALLS=y

A changelog entry will be needed similar to this PR: #2484

[arilou]

Done

[tormath1]

Thanks, I kicked-off a CI build. Changelog entry is still missing but it does not impact the CI run.

[arilou]

Thanks! Done

[tormath1]

@arilou image is available for download here: https://github.com/flatcar/scripts/actions/runs/12904571853/artifacts/2467235852 - can you give a try to see if it works as expected?

Failures in the CI are not related to this change (it happens when the test run from a fork).

[github-actions]

Build action triggered: https://github.com/flatcar/scripts/actions/runs/12945968867

[tormath1]

@arilou image is available for download here: https://github.com/flatcar/scripts/actions/runs/12904571853/artifacts/2467235852 - can you give a try to see if it works as expected?

Failures in the CI are not related to this change (it happens when the test run from a fork).

LGTM but I will let you confirm:

core@localhost ~ $ zcat /proc/config.gz | grep CONFIG_FTRACE_SYSCALLS
CONFIG_FTRACE_SYSCALLS=y
core@localhost ~ $ uname -a
Linux localhost 6.6.71-flatcar #1 SMP PREEMPT Wed Jan 22 10:11:29 -00 2025 aarch64 GNU/Linux
core@localhost ~ $ sudo ls -l /sys/kernel/tracing/events/syscalls/ | head
total 0
-rw-r-----. 1 root root 0 Jan 22 13:28 enable
-rw-r-----. 1 root root 0 Jan 22 13:28 filter
drwxr-xr-x. 1 root root 0 Jan 22 13:28 sys_enter_accept
drwxr-xr-x. 1 root root 0 Jan 22 13:28 sys_enter_accept4
drwxr-xr-x. 1 root root 0 Jan 22 13:28 sys_enter_acct
drwxr-xr-x. 1 root root 0 Jan 22 13:28 sys_enter_add_key
drwxr-xr-x. 1 root root 0 Jan 22 13:28 sys_enter_adjtimex
drwxr-xr-x. 1 root root 0 Jan 22 13:28 sys_enter_arm64_personality
drwxr-xr-x. 1 root root 0 Jan 22 13:28 sys_enter_bind

[arilou]

Looks good! Thanks you

[tormath1]

(FYI, I'm holding this PR until the current release is done to avoid any confusion)