Re: [CHECKER] 30 potential dereference of user-pointer errors

[Greg KH]

On Fri, Apr 25, 2003 at 07:18:02PM -0700, Junfeng Yang wrote:
> [BUG] pointer (rdwr_arg.msgs[i]) points to user space
> /home/junfeng/linux-tainted/drivers/i2c/i2c-dev.c:230:i2cdev_ioctl: ERROR:TAINTED:230:230: dereferencing tainted ptr 'rdwr_arg.msgs + i * 12' [Callstack: ]
> 
> 			if(rdwr_pa[i].buf == NULL)
> 			{
> 				res = -ENOMEM;
> 				break;
> 			}
> 
> Error --->
> 			if(copy_from_user(rdwr_pa[i].buf,
> 				rdwr_arg.msgs[i].buf,
> 				rdwr_pa[i].len))
> 			{

This one should be already be fixed in the 2.5.68 kernel.

thanks,

greg k-h