tcp: fix double-counted receiver RTT when leaving receiver fast path

[firefly-linux-kernel-4.4.55.git] / kernel / sys.c

diff --git a/kernel/sys.c b/kernel/sys.c
index 840cfdad7bfcc2a60109a195462decc0684a64bc..2e18d33ca775dc9c5219e9b3a47a6e67f3877d28 100644 (file)
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -434,11 +434,12 @@ static DEFINE_MUTEX(reboot_mutex);
 SYSCALL_DEFINE4(reboot, int, magic1, int, magic2, unsigned int, cmd,
                void __user *, arg)
 {
+       struct pid_namespace *pid_ns = task_active_pid_ns(current);
        char buffer[256];
        int ret = 0;
 
        /* We only trust the superuser with rebooting the system. */
-       if (!capable(CAP_SYS_BOOT))
+       if (!ns_capable(pid_ns->user_ns, CAP_SYS_BOOT))
                return -EPERM;
 
        /* For safety, we require "magic" arguments. */
@@ -454,7 +455,7 @@ SYSCALL_DEFINE4(reboot, int, magic1, int, magic2, unsigned int, cmd,
         * pid_namespace, the command is handled by reboot_pid_ns() which will
         * call do_exit().
         */
-       ret = reboot_pid_ns(task_active_pid_ns(current), cmd);
+       ret = reboot_pid_ns(pid_ns, cmd);
        if (ret)
                return ret;