| Message ID | 20180112215715.GA8246@ls3530.fritz.box (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Headers | show |
On Fri, Jan 12, 2018 at 1:57 PM, Helge Deller <deller@gmx.de> wrote: > > > Subject: [PATCH] parisc: Hide virtual kernel memory layout > > For security reasons do not expose the virtual kernel memory layout to > userspace. > > Signed-off-by: Helge Deller <deller@gmx.de> > Suggested-by: Kees Cook <keescook@chromium.org> > Cc: stable@vger.kernel.org # 4.15 Thanks! Reviewed-by: Kees Cook <keescook@chromium.org> -Kees > > diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c > index 48f41399fc0b..cab32ee824d2 100644 > --- a/arch/parisc/mm/init.c > +++ b/arch/parisc/mm/init.c > @@ -629,7 +629,12 @@ void __init mem_init(void) > #endif > > mem_init_print_info(NULL); > -#ifdef CONFIG_DEBUG_KERNEL /* double-sanity-check paranoia */ > + > +#if 0 > + /* > + * Do not expose the virtual kernel memory layout to userspace. > + * But keep code for debugging purposes. > + */ > printk("virtual kernel memory layout:\n" > " vmalloc : 0x%px - 0x%px (%4ld MB)\n" > " memory : 0x%px - 0x%px (%4ld MB)\n"
diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c index 48f41399fc0b..cab32ee824d2 100644 --- a/arch/parisc/mm/init.c +++ b/arch/parisc/mm/init.c @@ -629,7 +629,12 @@ void __init mem_init(void) #endif mem_init_print_info(NULL); -#ifdef CONFIG_DEBUG_KERNEL /* double-sanity-check paranoia */ + +#if 0 + /* + * Do not expose the virtual kernel memory layout to userspace. + * But keep code for debugging purposes. + */ printk("virtual kernel memory layout:\n" " vmalloc : 0x%px - 0x%px (%4ld MB)\n" " memory : 0x%px - 0x%px (%4ld MB)\n"
Subject: [PATCH] parisc: Hide virtual kernel memory layout For security reasons do not expose the virtual kernel memory layout to userspace. Signed-off-by: Helge Deller <deller@gmx.de> Suggested-by: Kees Cook <keescook@chromium.org> Cc: stable@vger.kernel.org # 4.15 -- To unsubscribe from this list: send the line "unsubscribe linux-parisc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html