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-rw-r--r--arch/s390/kvm/sigp.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c
index 36678835034d..0ef81d6776e9 100644
--- a/arch/s390/kvm/sigp.c
+++ b/arch/s390/kvm/sigp.c
@@ -169,7 +169,7 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
169 unsigned long *reg) 169 unsigned long *reg)
170{ 170{
171 struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int; 171 struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
172 struct kvm_s390_local_interrupt *li; 172 struct kvm_s390_local_interrupt *li = NULL;
173 struct kvm_s390_interrupt_info *inti; 173 struct kvm_s390_interrupt_info *inti;
174 int rc; 174 int rc;
175 u8 tmp; 175 u8 tmp;
@@ -189,9 +189,10 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
189 return 2; /* busy */ 189 return 2; /* busy */
190 190
191 spin_lock(&fi->lock); 191 spin_lock(&fi->lock);
192 li = fi->local_int[cpu_addr]; 192 if (cpu_addr < KVM_MAX_VCPUS)
193 li = fi->local_int[cpu_addr];
193 194
194 if ((cpu_addr >= KVM_MAX_VCPUS) || (li == NULL)) { 195 if (li == NULL) {
195 rc = 1; /* incorrect state */ 196 rc = 1; /* incorrect state */
196 *reg &= SIGP_STAT_INCORRECT_STATE; 197 *reg &= SIGP_STAT_INCORRECT_STATE;
197 kfree(inti); 198 kfree(inti);