kernel build error

[Mulyadi Santosa]

Hi ...

On Tue, Mar 19, 2013 at 12:28 PM, Kumar amit mehta <gmate.amit at gmail.com> wrote:
> grep for copy_from_user_overflow gives me this:
>
> amit at ubuntu:~/linux-next/linux-next$ grep -ri copy_from_user_overflow *
> arch/s390/include/asm/uaccess.h:extern void copy_from_user_overflow(void)
> arch/s390/include/asm/uaccess.h:                copy_from_user_overflow();
> arch/tile/include/asm/uaccess.h:extern void copy_from_user_overflow(void)
> arch/tile/include/asm/uaccess.h:                copy_from_user_overflow();
> arch/parisc/include/asm/uaccess.h:extern void copy_from_user_overflow(void)
> arch/parisc/include/asm/uaccess.h:                copy_from_user_overflow();
> arch/x86/include/asm/uaccess_32.h:extern void copy_from_user_overflow(void)
> arch/x86/include/asm/uaccess_32.h:              copy_from_user_overflow();
> drivers/vfio/pci/vfio_pci_config.c:      * with count of 1/2/4 and hits
> copy_from_user_overflow without this.
> lib/usercopy.c:void copy_from_user_overflow(void)


IMHO, I think uaccess_32.h is what you need here.

I draw that conclusion after checking this line:
http://lxr.linux.no/#linux+v3.8.3/arch/x86/include/asm/uaccess_32.h#L194

I might be wrong, so feel free to test first
-- 
regards,

Mulyadi Santosa
Freelance Linux trainer and consultant

blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com