[FS#330] xrx200-net: kenrel panic

[LEDE Bugs]

The following task has a new comment added:

FS#330 - xrx200-net: kenrel panic
User who did this - Michael Thomson (michthom)

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I may have screwed up the build - I do have a new lantiq_xrx200.o and lede-lantiq-xrx200-BTHOMEHUBV5A-squashfs-sysupgrade.bin, but the uname -a output is still
Linux lede 4.4.42 #0 Thu Jan 19 19:46:58 2017 mips GNU/Linux

And it still crashes when the LAN cable is present on boot.

[    2.163167] init: Console is alive
[    2.165386] init: - watchdog -
[    2.380073] dwc2 1e101000.ifxhcd: requested GPIO 495
[    3.239078] dwc2 1e101000.ifxhcd: DWC OTG Controller
[    3.242679] dwc2 1e101000.ifxhcd: new USB bus registered, assigned bus number 1
[    3.249981] dwc2 1e101000.ifxhcd: irq 62, io mem 0x00000000
[    3.255512] dwc2 1e101000.ifxhcd: Hardware does not support descriptor DMA mode -
[    3.262953] dwc2 1e101000.ifxhcd: falling back to buffer DMA mode.
[    3.270385] hub 1-0:1.0: USB hub found
[    3.273481] hub 1-0:1.0: 1 port detected
[    3.280549] init: - preinit -
[    3.476319] Unhandled kernel unaligned access[#1]:
[    3.479652] CPU: 0 PID: 354 Comm: ip Not tainted 4.4.42 #0
[    3.485132] task: 87d4ca10 ti: 87f5c000 task.ti: 87f5c000
[    3.490521] $ 0   : 00000000 00000000 87e1f92a 00000000
[    3.495743] $ 4   : 87c1b6c0 f7ebffb6 00000020 00000000
[    3.500965] $ 8   : 00000040 87e1f962 00000000 00000000
[    3.506187] $12   : 1003206c 770322c0 00000000 00400bcc
[    3.511410] $16   : 8065ccc0 00000040 87c1b6c0 f7ebffb6
[    3.516632] $20   : 00000000 c0000000 00000020 8065c898
[    3.521855] $24   : 00000000 80028a38                  
[    3.527077] $28   : 87f5c000 87f5dc08 87d78800 8027810c
[    3.532300] Hi    : 000001cb
[    3.535172] Lo    : 00001e75
[    3.538073] epc   : 802e7794 eth_type_trans+0x14/0x210
[    3.543194] ra    : 8027810c xrx200_poll_rx+0x140/0x1f4
[    3.548402] Status: 1100fc03 KERNEL EXL IE 
[    3.552582] Cause : 00800010 (ExcCode 04)
[    3.556584] BadVA : f7ec00ea
[    3.559458] PrId  : 00019556 (MIPS 34Kc)
[    3.563372] Modules linked in: dwc2 gpio_button_hotplug cryptomgr aead crypto_null
[    3.570953] Process ip (pid: 354, threadinfo=87f5c000, task=87d4ca10, tls=77033d48)
[    3.578604] Stack : 87f5c000 87f5dc30 87d78800 802c87b8 8065ccc0 71000040 87c1b6c0 8065ccc0
          00000040 8027810c 0004a515 804e0000 00000bd3 805a2000 8000003f 80498bf8
          8065ccc0 00000020 00000008 0000012c 804e4940 87f5dc90 fffede51 804e0000
          804e0000 802c87b8 0000004b 87812758 81014ba0 805a2000 804e0000 804af094
          804e0000 804af3a4 87f5dc90 87f5dc90 87f5dc98 87f5dc98 80633f2c 00000004
          ...
[    3.614117] Call Trace:
[    3.616563] [] eth_type_trans+0x14/0x210
[    3.621352] [] xrx200_poll_rx+0x140/0x1f4
[    3.626245] [] net_rx_action+0x118/0x2e0
[    3.631027] [] __do_softirq+0x2a0/0x2b8
[    3.635712] [] do_softirq.part.1+0x70/0x78
[    3.640674] [] __local_bh_enable_ip+0x88/0xc0
[    3.645896] [] xrx200_open+0x144/0x1e8
[    3.650513] [] __dev_open+0xf0/0x1ac
[    3.654950] [] __dev_change_flags+0xc0/0x17c
[    3.660084] [] dev_change_flags+0x28/0x70
[    3.664961] [] devinet_ioctl+0x2b4/0x8a8
[    3.669768] [] sock_ioctl+0x294/0x2f0
[    3.674263] 
[    3.675741] 
Code: afb0001c  afbf0024  ac850014  00a08821  10400004  00808021  00802821  0040f809 
[    3.685744] ---[ end trace 7d1f7055a9454ce3 ]---
[    3.692582] Kernel panic - not syncing: Fatal exception in interrupt
[    3.698713] Rebooting in 1 seconds..
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=330#comment1377