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--- b/kernel/cpu.c
+++ a/kernel/cpu.c
@@ -817,6 +817,7 @@
/* Park the smpboot threads */
kthread_park(per_cpu_ptr(&cpuhp_state, cpu)->thread);
+ smpboot_park_threads(cpu);
/*
* Prevent irq alloc/free while the dying cpu reorganizes the
@@ -1388,7 +1389,7 @@
[CPUHP_AP_SMPBOOT_THREADS] = {
.name = "smpboot/threads:online",
.startup.single = smpboot_unpark_threads,
+ .teardown.single = NULL,
- .teardown.single = smpboot_park_threads,
},
[CPUHP_AP_PERF_ONLINE] = {
.name = "perf:online",
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