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From 62722a97a6aeb1ebba9b749068ed6e9eaecceb37 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Fri, 4 May 2018 09:40:03 +0200
Subject: [PATCH 53/93] seccomp: Use PR_SPEC_FORCE_DISABLE
commit b849a812f7eb92e96d1c8239b06581b2cfd8b275 upstream
Use PR_SPEC_FORCE_DISABLE in seccomp() because seccomp does not allow to
widen restrictions.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
kernel/seccomp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/seccomp.c b/kernel/seccomp.c
index 1d3078b..a0bd6ea 100644
--- a/kernel/seccomp.c
+++ b/kernel/seccomp.c
@@ -226,7 +226,7 @@ static inline void spec_mitigate(struct task_struct *task,
int state = arch_prctl_spec_ctrl_get(task, which);
if (state > 0 && (state & PR_SPEC_PRCTL))
- arch_prctl_spec_ctrl_set(task, which, PR_SPEC_DISABLE);
+ arch_prctl_spec_ctrl_set(task, which, PR_SPEC_FORCE_DISABLE);
}
static inline void seccomp_assign_mode(struct task_struct *task,
--
2.7.4
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