parisc: disable preemption in send_IPI_allbutself()

Otherwise we might not stop all other CPUs. Signed-off-by: Sven Schnelle <svens@stackframe.org> Signed-off-by: Helge Deller <deller@gmx.de>
0day-ci · Oct 30, 2021 · 1c2fb94 · 1c2fb94
1 parent 3fb28e1
commit 1c2fb94
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
@@ -219,11 +219,13 @@ static inline void
 send_IPI_allbutself(enum ipi_message_type op)
 {
 	int i;
-
+
+	preempt_disable();
 	for_each_online_cpu(i) {
 		if (i != smp_processor_id())
 			send_IPI_single(i, op);
 	}
+	preempt_enable();
 }