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-rw-r--r--kernel/sched/core.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 3c5b21e2ef20..c7ea688faff4 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -4784,7 +4784,7 @@ void sched_show_task(struct task_struct *p)
free = stack_not_used(p);
#endif
printk(KERN_CONT "%5lu %5d %6d 0x%08lx\n", free,
- task_pid_nr(p), task_pid_nr(p->real_parent),
+ task_pid_nr(p), task_pid_nr(rcu_dereference(p->real_parent)),
(unsigned long)task_thread_info(p)->flags);
show_stack(p, NULL);