Re: network packet corruption in v3.6.0-rc1 (and also in v3.5)

Andrew Worsley
2012-08-19T20:20:54Z

> OK, this seems to be related to r8712u, still in staging tree.
>
> At first glance, its using a buggy skb_clone(), or kind of a 'reuse skb'
> trick I have no time to investigate.
>
> I suspect that some memory area are overwritten by this driver, and this
> was not noticed with older kernels. With new kernels, its triggering a
> WARN_ON() in tcp stack.
>
> Any chance you can try to reproduce the bug with another adapter ?

Unfortunately I don't have another USB dongle. I could try to get the built in

Broadcom Corporation BCM4331 802.11a/b/g/n (rev 02)
Subsystem: Apple Inc. Device 00ef

but I need to dig out the proprietary firmware - which will take some
time as I am not familiar with the procedure.

The weird thing about this USB dongle is that I brought it because it
was claimed to be supported under Linux

idVendor 0x0b05 ASUSTek Computer, Inc.
idProduct 0x1786 USB-N10 802.11n Network Adapter [Realtek RTL8188SU]

RealTek driver web site - -
http://www.realtek.com.tw/downloads/downloadsView.aspx?Langid=1&PNid=48&PFid=48&Level=5&Conn=4&DownTypeID=3&GetDown=false&Downloads=true#RTL8188SU

which claims support "Linux Kernel 2.6.18~2.6.38 and Kernel 3.0.2"
but requires I try compiling the driver from source

Andrew