4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Thomas Gleixner <t...@linutronix.de>
commit b849a812f7eb92e96d1c8239b06581b2cfd8b275 upstream
Use PR_SPEC_FORCE_DISABLE in seccomp() because seccomp does not allow to
widen restrictions.
Signed-off-by: Thomas Gleixner <t...@linutronix.de>
Signed-off-by: David Woodhouse <d...@amazon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
kernel/seccomp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/seccomp.c
+++ b/kernel/seccomp.c
@@ -226,7 +226,7 @@ static inline void spec_mitigate(struct
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,
