1 files changed, 4 insertions, 4 deletions

diff --git a/kernel/rcu/tiny_plugin.h b/kernel/rcu/tiny_plugin.h
index 431528520562..858c56569127 100644
--- a/kernel/rcu/tiny_plugin.h
+++ b/kernel/rcu/tiny_plugin.h
@@ -144,7 +144,7 @@ static void check_cpu_stall(struct rcu_ctrlblk *rcp)
                 return;
         rcp->ticks_this_gp++;
         j = jiffies;
-        js = rcp->jiffies_stall;
+        js = ACCESS_ONCE(rcp->jiffies_stall);
         if (*rcp->curtail && ULONG_CMP_GE(j, js)) {
                 pr_err("INFO: %s stall on CPU (%lu ticks this GP) idle=%llx (t=%lu jiffies q=%ld)\n",
                        rcp->name, rcp->ticks_this_gp, rcu_dynticks_nesting,
@@ -152,17 +152,17 @@ static void check_cpu_stall(struct rcu_ctrlblk *rcp)
                 dump_stack();
         }
         if (*rcp->curtail && ULONG_CMP_GE(j, js))
-                rcp->jiffies_stall = jiffies +
+                ACCESS_ONCE(rcp->jiffies_stall) = jiffies +
                         3 * rcu_jiffies_till_stall_check() + 3;
         else if (ULONG_CMP_GE(j, js))
-                rcp->jiffies_stall = jiffies + rcu_jiffies_till_stall_check();
+                ACCESS_ONCE(rcp->jiffies_stall) = jiffies + rcu_jiffies_till_stall_check();
 }
 
 static void reset_cpu_stall_ticks(struct rcu_ctrlblk *rcp)
 {
         rcp->ticks_this_gp = 0;
         rcp->gp_start = jiffies;
-        rcp->jiffies_stall = jiffies + rcu_jiffies_till_stall_check();
+        ACCESS_ONCE(rcp->jiffies_stall) = jiffies + rcu_jiffies_till_stall_check();
 }
 
 static void check_cpu_stalls(void)