RouterOS kernel panic

Hi,
I have a problem sometime show me on terminal

HW
Intel(R) 4CPU 2833 MHz
x86 RouterOS 6.10



[<f835cbea>] nf_ct_delete_from_lists+0x17b/0x198 [nf_conntrack00x835c000]
[<f835d036>] ? nf_ct_get_tuplepr+0x6d/0x128 [mf_conntrack00xf835c00]
[<f835d063>] nf_ct_get_tuplepr+0x9a/0x128 [nf_conntrack00xf835c00]
[<f835d036>] ? nf_ct_get_tuplepr+0x6d/0x128 [mf_conntrack00xf835c00]
[<80120608>] run_timer_siftirg+0xfd/0x176
[<8011c4e4>] __do_softirq+0x75/xcc
[<8011c46f>] ? remote_softirg_receive+0x15/0x15
<IRQ>
[<8011c6c1>] ? irq_exit+0x35/0x68
[<80103608>] ? do_IRQ+0x7a/0x8e
[<8011c6c1>] ? common_interrupt+0x29/0x30
[<8011c6c1>] ? mwait_idle+0x4a/0x50
[<8011c6c1>] ? cpu_idle+0x4c/0x66
[<8011c6c1>] ? rest_init+0x76/0x66
[<8011c6c1>] ? start_kernel+0x76/0x78
[<8011c6c1>] ? i386_start_kernel+0x78/0x74
Code: 87 83 c4 24 5b 5e 5f 5d c3 55 89 e5 56 53 89 c3 8b b0 ......

EIR:[<f835ca91>] nf_ct_delete_from_list+0x22/0x198 [nf_conntrack00xf835c000]
S:ESP 0068:f600bf60
CR2 : 0000000075f557018
---[ end trace cbb87c3ce8bf3962 ]---
Kernel panic - not syncing: Fatal exception in interrupt

Backup, then do a clean install with 6.19.