Hello again,
I've bisected this and found that the issue is caused by commit f46262bbc05af38565c560fd960b86a0e195fd4b:
'Revert "mm/execmem: Unify early execmem_cache behaviour"'
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/c...
https://lore.kernel.org/stable/20250617152521.879529420@linuxfoundation.org/
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree...
Regards Pascal