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
Reviewed-by: Kees Cook <keescook@chromium.org>

parent 0adb24e0

arch/parisc/mm/init.c

+6 −1

Original line number	Diff line number	Diff line
		@@ -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"