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-rw-r--r--kernel/rcu/srcutiny.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/rcu/srcutiny.c b/kernel/rcu/srcutiny.c
index 26344dc6483b..a0ba2ed49bc6 100644
--- a/kernel/rcu/srcutiny.c
+++ b/kernel/rcu/srcutiny.c
@@ -96,7 +96,7 @@ EXPORT_SYMBOL_GPL(cleanup_srcu_struct);
*/
void __srcu_read_unlock(struct srcu_struct *ssp, int idx)
{
- int newval = ssp->srcu_lock_nesting[idx] - 1;
+ int newval = READ_ONCE(ssp->srcu_lock_nesting[idx]) - 1;
WRITE_ONCE(ssp->srcu_lock_nesting[idx], newval);
if (!newval && READ_ONCE(ssp->srcu_gp_waiting))