Messages in this thread | | | Date | Sat, 30 Apr 2011 08:41:51 -0400 | From | Andy Lutomirski <> | Subject | Re: [Oops 1/2]Something wrong with copy_from_user() function |
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On 04/30/2011 02:13 AM, Harry Wei wrote: > Hi us, > When i was compiling 2.6.38.2 kernel. Something wrong happend to me. > It shows like following. > > [...] > Warning: call to 'copy_from_user_overflow' declared with attribute warning: > copy_from_user buffer size is not provably correct. > [...] > > See http://s1202.photobucket.com/albums/bb364/harrywei/Kernel/?action=view¤t=report_bug.png for details. > I tried to fix this warning, but i don't know how to deal with > it. Can anyone help me.
That's a bug (maybe) in drivers/staging/vt6656/wpactl.c, which is a staging driver and therefore liable to be imperfect. You could ignore it or fix it and submit a patch.
(The bug isn't in copy_from_user -- it's an intentional warning in there to indicate that something might be wrong with the caller.)
--Andy
> > Thanks. > Harry Wei.
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