Re: [BUG] staging: r8188eu: KASAN: slab-out-of-bounds in rtw_cmd_thread

[Solomon Tan]

> > > It looks like
> > > commit 0afaa121813e ("staging: r8188eu: use in-kernel ieee channel")
> > > intoduced a. See KASAN output below.
> > > 
> > > That commit replaced the use of struct rtw_ieee80211_channel with struct
> > > ieee80211_channel.
> > > 
> > > There are several calls to memcpy that used sizeof(struct
> > > rtw_ieee80211_channel)
> > > and now use sizeof(struct ieee80211_channel) but the sizes of these two
> > > structures are not equal.
> > > 
> 
> drivers/staging/r8188eu/core/rtw_cmd.c:276: memcpy() call.
> 
> As Michael said the sizes of structures do not mach and the memcpy writes
> below allocated buffer.
> 
Thanks Pavel.

Hi Michael, I could not find the cause of this issue, and I am afraid I
might break even more stuff if I attempt to fix it, so I have submitted
a new patch to revert my changes. Sorry for the inconvenience.

Cheers,
Solomon