On Wed, Oct 04, 2023 at 12:29:36AM +0000, Edgecombe, Rick P wrote:
> On Mon, 2023-09-18 at 10:29 +0300, Mike Rapoport wrote:
> > diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c
> > index 5f71a0cf4399..9d37375e2f05 100644
> > --- a/arch/x86/kernel/module.c
> > +++ b/arch/x86/kernel/module.c
> >
> > -void *module_alloc(unsigned long size)
> > +struct execmem_params __init *execmem_arch_params(void)
> > {
> > - gfp_t gfp_mask = GFP_KERNEL;
> > - void *p;
> > -
> > - if (PAGE_ALIGN(size) > MODULES_LEN)
> > - return NULL;
> > + unsigned long module_load_offset = 0;
> > + unsigned long start;
> >
> > - p = __vmalloc_node_range(size, MODULE_ALIGN,
> > - MODULES_VADDR +
> > get_module_load_offset(),
> > - MODULES_END, gfp_mask, PAGE_KERNEL,
> > - VM_FLUSH_RESET_PERMS |
> > VM_DEFER_KMEMLEAK,
> > - NUMA_NO_NODE,
> > __builtin_return_address(0));
> > + if (IS_ENABLED(CONFIG_RANDOMIZE_BASE) && kaslr_enabled())
> > + module_load_offset =
> > + get_random_u32_inclusive(1, 1024) *
> > PAGE_SIZE;
>
> Minor:
> I think you can skip the IS_ENABLED(CONFIG_RANDOMIZE_BASE) part because
> CONFIG_RANDOMIZE_MEMORY depends on CONFIG_RANDOMIZE_BASE (which is
> checked in kaslr_enabled()).
Thanks, I'll look into it.
--
Sincerely yours,
Mike.
