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(-) linux/mm/mremap.c.orig (+4 lines)
 Lines 315-320    Link Here  
	old_len = PAGE_ALIGN(old_len);
	old_len = PAGE_ALIGN(old_len);
	new_len = PAGE_ALIGN(new_len);
	new_len = PAGE_ALIGN(new_len);

            

              
              
	/* Don't allow the degenerate cases */

            

            

              
              
	if (!(old_len | new_len))

            

            

              
              
		goto out;

            

            

              
              

            

        
	/* new_addr is only valid if MREMAP_FIXED is specified */
	/* new_addr is only valid if MREMAP_FIXED is specified */

        
	if (flags & MREMAP_FIXED) {
	if (flags & MREMAP_FIXED) {

        
		if (new_addr & ~PAGE_MASK)
		if (new_addr & ~PAGE_MASK)