Kernel Ring Buffer: <3>rc_kthread_mem_user_copy: 8

Hi community,

I've a strange news every two seconds, I got a message which is

<3>rc_kthread_mem_user_copy: 8

I'm running OpenSuse Tumbleweed with latest updates and Kernel
Linux lnx 5.11.6-1-default #1 SMP Thu Mar 11 16:11:36 UTC 2021 (7358b30) x86_64 x86_64 x86_64 GNU/Linux

I've no clue where to look to eliminate this message. If anyone has any hint to me where to dig in?

The first occurrence is here

[ 4.872317] scsi 1:1:0:0: Attached scsi generic sg2 type 5
[ 4.917606] sda: sda1
[ 4.917915] sd 1:0:0:0: [sda] Attached SCSI disk
[ 9.931925] sr 1:1:0:0: [sr0] scsi-1 drive
[ 9.931928] cdrom: Uniform CD-ROM driver Revision: 3.20
[ 9.960556] <3>rc_kthread_mem_user_copy: 8
[ 9.960570] sr 1:1:0:0: Attached scsi CD-ROM sr0
[ 9.960755] <3>rc_kthread_mem_user_copy: 8
[ 9.971744] <3>rc_kthread_mem_user_copy: 8

Than it is ongoing

[ 2504.648228] <3>rc_kthread_mem_user_copy: 8
[ 2506.664209] <3>rc_kthread_mem_user_copy: 8
[ 2508.680536] <3>rc_kthread_mem_user_copy: 8
[ 2510.696566] <3>rc_kthread_mem_user_copy: 8
[ 2512.712150] <3>rc_kthread_mem_user_copy: 8
[ 2514.728105] <3>rc_kthread_mem_user_copy: 8
[ 2516.744457] <3>rc_kthread_mem_user_copy: 8
[ 2518.760429] <3>rc_kthread_mem_user_copy: 8
[ 2520.776053] <3>rc_kthread_mem_user_copy: 8
[ 2522.792166] <3>rc_kthread_mem_user_copy: 8
[ 2524.808351] <3>rc_kthread_mem_user_copy: 8
[ 2526.824323] <3>rc_kthread_mem_user_copy: 8

Thanks in advance, Fred