Patch "parisc: Hide virtual kernel memory layout" has been added to the 4.15-stable tree

This is a note to let you know that I've just added the patch titled

parisc: Hide virtual kernel memory layout

to the 4.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
parisc-hide-virtual-kernel-memory-layout.patch
and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Helge Deller <[email protected]>
Date: Fri, 12 Jan 2018 22:57:15 +0100
Subject: parisc: Hide virtual kernel memory layout

From: Helge Deller <[email protected]>

commit fd8d0ca2563151204f3fe555dc8ca4bcfe8677a3 upstream.

For security reasons do not expose the virtual kernel memory layout to userspace.

---
 arch/parisc/mm/init.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

@@ -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"

Patches currently in stable-queue which might be from [email protected] are

queue-4.15/parisc-hide-virtual-kernel-memory-layout.patch queue-4.15/parisc-use-cr16-interval-timers-unconditionally-on-qemu.patch queue-4.15/parisc-fix-ordering-of-cache-and-tlb-flushes.patch queue-4.15/parisc-reduce-irq-overhead-when-run-in-qemu.patch