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-rw-r--r--kernel/rcu/tasks.h2
-rw-r--r--kernel/rcu/tree_stall.h3
2 files changed, 3 insertions, 2 deletions
diff --git a/kernel/rcu/tasks.h b/kernel/rcu/tasks.h
index 732ad5b399..3f64268fe9 100644
--- a/kernel/rcu/tasks.h
+++ b/kernel/rcu/tasks.h
@@ -1941,7 +1941,7 @@ void show_rcu_tasks_trace_gp_kthread(void)
{
char buf[64];
- sprintf(buf, "N%lu h:%lu/%lu/%lu",
+ snprintf(buf, sizeof(buf), "N%lu h:%lu/%lu/%lu",
data_race(n_trc_holdouts),
data_race(n_heavy_reader_ofl_updates),
data_race(n_heavy_reader_updates),
diff --git a/kernel/rcu/tree_stall.h b/kernel/rcu/tree_stall.h
index 5d66642854..b5ec62b2d8 100644
--- a/kernel/rcu/tree_stall.h
+++ b/kernel/rcu/tree_stall.h
@@ -504,7 +504,8 @@ static void print_cpu_stall_info(int cpu)
rcu_dynticks_in_eqs(rcu_dynticks_snap(cpu));
rcuc_starved = rcu_is_rcuc_kthread_starving(rdp, &j);
if (rcuc_starved)
- sprintf(buf, " rcuc=%ld jiffies(starved)", j);
+ // Print signed value, as negative values indicate a probable bug.
+ snprintf(buf, sizeof(buf), " rcuc=%ld jiffies(starved)", j);
pr_err("\t%d-%c%c%c%c: (%lu %s) idle=%04x/%ld/%#lx softirq=%u/%u fqs=%ld%s%s\n",
cpu,
"O."[!!cpu_online(cpu)],