On Mon, Oct 7, 2013 at 5:42 AM, HATAYAMA Daisuke <d.hatayama at jp.fujitsu.com> wrote: > +static unsigned long > +get_unmapped_area_vmcore(struct file *filp, unsigned long addr, > + unsigned long len, unsigned long pgoff, > + unsigned long flags) > +{ > +#ifdef CONFIG_MMU > + return current->mm->get_unmapped_area(filp, addr, len, pgoff, > flags); > +#else > + return -EIO; > +#endif > +} > + > static const struct file_operations proc_vmcore_operations = { > .read = read_vmcore, > .llseek = default_llseek, > .mmap = mmap_vmcore, > + .get_unmapped_area = get_unmapped_area_vmcore, I think current->mm->get_unmapped_area should be used by core proc code. ENOMEM bug looks unrelated though.