rc_kthread_mem_user_copy error on kernel > 5.10.x

[mircobocedi]

with kernel > 5.10 i have this message repeated from boot every 2 seconds:

[ 57.879023] <3>rc_kthread_mem_user_copy: 8
[ 59.927038] <3>rc_kthread_mem_user_copy: 8
[ 61.975021] <3>rc_kthread_mem_user_copy: 8
[ 64.023022] <3>rc_kthread_mem_user_copy: 8

i watched the code, it seems there is a problem with kernel function copy_to_user, but i don't understand the cause...

any suggestion? could it corrupt the filesystem?

thank you