Adding debian version 4.19.249-2.debian/4.19.249-2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 33 insertions, 0 deletions

diff --git a/debian/patches/features/all/lockdown/0023-x86-mmiotrace-Lock-down-the-testmmiotrace-module.patch b/debian/patches/features/all/lockdown/0023-x86-mmiotrace-Lock-down-the-testmmiotrace-module.patch
new file mode 100644
index 000000000..47edb3442
--- /dev/null
+++ b/debian/patches/features/all/lockdown/0023-x86-mmiotrace-Lock-down-the-testmmiotrace-module.patch
@@ -0,0 +1,33 @@
+From: David Howells <dhowells@redhat.com>
+Date: Wed, 8 Nov 2017 15:11:36 +0000
+Subject: [23/29] x86/mmiotrace: Lock down the testmmiotrace module
+Origin: https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/commit?id=20af3be0bcf6a78e3632770561fba6531dd3b444
+
+The testmmiotrace module shouldn't be permitted when the kernel is locked
+down as it can be used to arbitrarily read and write MMIO space.
+
+Suggested-by: Thomas Gleixner <tglx@linutronix.de>
+Signed-off-by: David Howells <dhowells@redhat.com
+cc: Thomas Gleixner <tglx@linutronix.de>
+cc: Steven Rostedt <rostedt@goodmis.org>
+cc: Ingo Molnar <mingo@kernel.org>
+cc: "H. Peter Anvin" <hpa@zytor.com>
+cc: x86@kernel.org
+---
+ arch/x86/mm/testmmiotrace.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+Index: linux/arch/x86/mm/testmmiotrace.c
+===================================================================
+--- linux.orig/arch/x86/mm/testmmiotrace.c
++++ linux/arch/x86/mm/testmmiotrace.c
+@@ -115,6 +115,9 @@ static int __init init(void)
+ {
+ 	unsigned long size = (read_far) ? (8 << 20) : (16 << 10);
+ 
++	if (kernel_is_locked_down("MMIO trace testing"))
++		return -EPERM;
++
+ 	if (mmio_address == 0) {
+ 		pr_err("you have to use the module argument mmio_address.\n");
+ 		pr_err("DO NOT LOAD THIS MODULE UNLESS YOU REALLY KNOW WHAT YOU ARE DOING!\n");