do IPsec test using final branch in openwrt 21.02 cause a kernel(5.4.179) crash

[mgkiller7]

Hello, @vschagen
Your mtk-eip93 of final branch indeed improved the throughput of ipsec a lot, but it is easy to cause a kernel crash when using it.

Below is my IPsec connect topology: (IPsec mode is 3DES+SHA1; MT7530 switch work in DSA mode)
PC - 192.168.0.1 -|-172.16.13.200 ---- 172.16.13.100 -|- 192.168.2.1
===lan========wan=== ===wan========lan====
Xiaomi R3Gv2_____________________Another Router
PC run iperf3 client， another router run iperf3 -s service.
When iperf3 in PC side work as Tx, the throughput is 102Mbps; And when iperf3 in PC side work as Rx(iperf3 -R) the throughput is 160Mbps but it is easy to cause a kernel crash.

Types of Kernel Crash :

1. BUG: Bad page state __do_softirq-> net_rx_action->__napi_poll->mtk_napi_rx->page_frag_alloc->...->get_page_from_freelist
2. CPU 2 Unable to handle kernel paging request __do_softirq-> net_rx_action->__napi_poll->gro_cell_poll->napi_complete_done-> ... ->kmem_cache_alloc
3. CPU 2 Unable to handle kernel paging request __do_softirq-> net_rx_action->__napi_poll->gro_cell_poll->napi_gro_receive-> ... ->__kmalloc
4. CPU 2 Unable to handle kernel paging request __do_softirq-> net_rx_action->__napi_poll->gro_cell_poll->napi_complete_done-> ... ->__kmalloc
5. CPU 2 Unable to handle kernel paging request mtk_irq_clear->mtk_aead_handle_result->mtk_unmap_dma
6. CPU 0 Unable to handle kernel paging request gro_normal_list->gro_normal_one
7. CPU 0 Unable to handle kernel paging request __do_softirq->net_rx_action->__napi_poll->mtk_napi_tx->gro_normal_one

The detial log of each kernal crash is attached
detail crash.txt

(it seams related to ethernet net_rx_action() and memory alloc action. I already tried other band MT7621 router but got the same result)