[FS#657] WF-2881 - If You use USB 3.0(vfat32) stick, Wifi and network don't work.

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - ChaeHoon (fehead) 

Attached to Project - LEDE Project
Summary - WF-2881 - If You use USB 3.0(vfat32) stick,  Wifi and network don't work.
Task Type - Bug Report
Category - Kernel
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - lede-17.01
Due in Version - Undecided
Due Date - Undecided
Details - Supply the following if possible:
 - Device problem occurs on
 - Software versions of LEDE release, packages, etc.
 - Steps to reproduce
   

DEVICE : netis WF-2881 (M1200AC)
LEDE 17.01.0 version, kmod-usb3, kmod-usb-storage, kmod-fs-vfat

1. Insert USB 3.0 stick with vfat32.(it's okay, No error.)
2. mount usb stick to /mnt/sda1.
 2.1. then You will see an kernel error. (kernel log is "Data buffer not 16 bytes aligned: 864801b8")
 2.2. wifi is don't work. and network doesn't work.

Here is Kernel log. and kernel source(kernel log "Data buffer not 16 bytes aligned:") is drivers/mtd/nand/mtk_nand.c

[ 8.800000] usbcore: registered new interface driver usbfs
[ 8.810000] usbcore: registered new interface driver hub
[ 8.820000] usbcore: registered new device driver usb
[ 8.840000] xhci-mtk 1e1c0000.xhci: xHCI Host Controller
[ 8.850000] xhci-mtk 1e1c0000.xhci: new USB bus registered, assigned bus number 1
[ 8.870000] xhci-mtk 1e1c0000.xhci: hcc params 0x01401198 hci version 0x96 quirks 0x00210010
[ 8.880000] xhci-mtk 1e1c0000.xhci: irq 29, io mem 0x1e1c0000
[ 8.900000] hub 1-0:1.0: USB hub found
[ 8.910000] xhci-mtk 1e1c0000.xhci: xHCI Host Controller
[ 8.920000] xhci-mtk 1e1c0000.xhci: new USB bus registered, assigned bus number 2
[ 8.940000] usb usb2: We don't know the algorithms for LPM for this host, disabling LPM.
[ 8.950000] hub 2-0:1.0: USB hub found
[ 12.920000] kmodloader: failed to open /tmp/overlay/upper/lib/modules/4.4.50/ledtrig-usbport.ko
[ 165.200000] usb 2-1: new SuperSpeed USB device number 2 using xhci-mtk

...
...

[ 562.000000] usb 2-1: new SuperSpeed USB device number 2 using xhci-mtk
[ 562.030000] usb-storage 2-1:1.0: USB Mass Storage device detected
[ 562.040000] scsi host0: usb-storage 2-1:1.0
[ 563.050000] scsi 0:0:0:0: Direct-Access Verbatim STORE N GO PMAP PQ: 0 ANSI: 6
[ 563.060000] sd 0:0:0:0: [sda] 61767680 512-byte logical blocks: (31.6 GB/29.5 GiB)
[ 563.080000] sd 0:0:0:0: [sda] Write Protect is off
[ 563.090000] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 563.400000] sda: sda1
[ 563.410000] sd 0:0:0:0: [sda] Attached SCSI removable disk
[ 563.480000] FAT-fs (sda1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
[ 679.580000] Data buffer not 16 bytes aligned: 864801b8
[ 679.590000] Data buffer not 16 bytes aligned: 864805d8
[ 679.610000] Data buffer not 16 bytes aligned: 86480148
[ 679.630000] Data buffer not 16 bytes aligned: 86480158


More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=657