Call trace when use openwrt firmware when reflash uboot on TL-841ND v9.2

Hi everyone,

I am using TL 841ND v9.2.
Before I flash openwrt and boot up successful.
But I reflash uboot broken. I have to use tool to reflash uboot which I backup before. And I can enter uboot on TL device.

But now, I am facing when reflash openwrt firmware, I saw call trace on my system on uart console.

A point, I tried with TL firmware stock, It can boot up to login console and don't see any call trace.

Please help me to fix it and give me advice to resolve it

 15.856143] kmodloader: loading kernel modules from /etc/modules.d/*
[   15.881461] ip6_tables: (C) 2000-2006 Netfilter Core Team
[   15.913270] Loading modules backported from Linux version v4.19.237-0-ga6e4a1818efa
[   15.921278] Backport generated by backports.git v4.19.237-1-0-gffb89fd9
[   15.948793] ip_tables: (C) 2000-2006 Netfilter Core Team
[   15.974808] nf_conntrack version 0.5.0 (1024 buckets, 4096 max)
[   16.129975] xt_time: kernel timezone is -0000
[   16.252079] PPP generic driver version 2.4.2
[   16.266988] NET: Registered protocol family 24
[   16.365016] Data bus error, epc == 801e93b0, ra == 8091fedc
[   16.370789] Oops[#1]:
[   16.373148] CPU: 0 PID: 501 Comm: kmodloader Not tainted 4.14.334 #0
[   16.379711] task: 81a105a0 task.stack: 80f04000
[   16.384383] $ 0   : 00000000 00000001 deadc0de 00014000
[   16.389794] $ 4   : b81143fc 000143fc 00014000 00000004
[   16.395197] $ 8   : 00000001 7c7c3c7c 7c7c7c7c 7c7c7c7c
[   16.400600] $12   : 7c7c3c7c 80f05a44 80f05938 7c7c7c3c
[   16.406003] $16   : 8083a080 00000018 00000000 00030000
[   16.411406] $20   : 00010000 00031018 00000004 000003ff
[   16.416808] $24   : 00000000 00000000                  
[   16.422212] $28   : 80f04000 80f05a20 80f05a74 8091fedc
[   16.427623] Hi    : 00000003
[   16.430599] Lo    : 000000ff
[   16.433579] epc   : 801e93b0 0x801e93b0
[   16.437546] ra    : 8091fedc 0x8091fedc [ath9k_hw@80900000+0x516a0]
[   16.444012] Status: 1000f403 KERNEL EXL IE 
[   16.448341] Cause : 1080001c (ExcCode 07)
[   16.452480] PrId  : 00019374 (MIPS 24Kc)
[   16.456529] Modules linked in: ath9k(+) ath9k_common pppoe ppp_async ath9k_hw ath pppoxg
[   16.520645] Process kmodloader (pid: 501, threadinfo=80f04000, task=81a105a0, tls=77f83)
[   16.529265] Stack : ffffffff 80f05a44 80f05938 ffffffff 00002710 8083a080 000003ff 80920
[   16.537911]         80e7a000 8083a080 80f05b04 00000004 8094cdc8 8083a4bc 00000001 80914
[   16.546557]         80f04000 80f05a88 00000220 00000220 00008000 ffffffff 80f05b04 80920
[   16.555204]         80838080 80903e88 00000001 80430000 80835540 80961ff0 000186a0 80830
[   16.563850]         8083a080 8083a0a8 00008000 00000001 80f05b04 00000004 8094cdc8 99999
[   16.572496]         ...

https://openwrt.org/supported_devices/432_warning

This device isn't supported anymore and hasn't been for half a decade already, you may simply run out of RAM - or the aging hardware is just broken.