The hotplug notifier rcutorture_cpu_notify() doesn't consider the corresponding CPU_XXX_FROZEN transitions. They occure on suspend/resume and are usually handled the same way as the corresponding non frozen transitions.
Mask the switch case action argument with '~CPU_TASKS_FROZEN' to map CPU_XXX_FROZEN hotplug transitions on corresponding non frozen transitions. Cc: Josh Triplett <[email protected]> Cc: "Paul E. McKenney" <[email protected]> Signed-off-by: Anna-Maria Gleixner <[email protected]> --- kernel/rcu/rcutorture.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -1598,7 +1598,7 @@ static int rcutorture_cpu_notify(struct { long cpu = (long)hcpu; - switch (action) { + switch (action & ~CPU_TASKS_FROZEN) { case CPU_ONLINE: case CPU_DOWN_FAILED: (void)rcutorture_booster_init(cpu);
