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Subject[PATCH 09/12] uswsusp: Disable when trusted_kernel is true
uswsusp allows a user process to dump and then restore kernel state, which
makes it possible to modify the running kernel. Disable this if
trusted_kernel is true.

Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
---
kernel/power/user.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/power/user.c b/kernel/power/user.c
index 526e891..43b7b59 100644
--- a/kernel/power/user.c
+++ b/kernel/power/user.c
@@ -24,6 +24,7 @@
#include <linux/console.h>
#include <linux/cpu.h>
#include <linux/freezer.h>
+#include <linux/security.h>

#include <asm/uaccess.h>

@@ -49,7 +50,7 @@ static int snapshot_open(struct inode *inode, struct file *filp)
struct snapshot_data *data;
int error;

- if (!hibernation_available())
+ if (get_trusted_kernel() || !hibernation_available())
return -EPERM;

lock_system_sleep();
--
2.1.0


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