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-rw-r--r--arch/x86_64/kernel/genapic_cluster.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/x86_64/kernel/genapic_cluster.c b/arch/x86_64/kernel/genapic_cluster.c
index 9703da7202e3..f6523dd1bc09 100644
--- a/arch/x86_64/kernel/genapic_cluster.c
+++ b/arch/x86_64/kernel/genapic_cluster.c
@@ -72,10 +72,14 @@ static void cluster_send_IPI_mask(cpumask_t mask, int vector)
72static void cluster_send_IPI_allbutself(int vector) 72static void cluster_send_IPI_allbutself(int vector)
73{ 73{
74 cpumask_t mask = cpu_online_map; 74 cpumask_t mask = cpu_online_map;
75 cpu_clear(smp_processor_id(), mask); 75 int me = get_cpu(); /* Ensure we are not preempted when we clear */
76
77 cpu_clear(me, mask);
76 78
77 if (!cpus_empty(mask)) 79 if (!cpus_empty(mask))
78 cluster_send_IPI_mask(mask, vector); 80 cluster_send_IPI_mask(mask, vector);
81
82 put_cpu();
79} 83}
80 84
81static void cluster_send_IPI_all(int vector) 85static void cluster_send_IPI_all(int vector)