From 5b7898648f02083012900e48d063e51ccbdad165 Mon Sep 17 00:00:00 2001 From: Ricardo Koller Date: Wed, 26 Jan 2022 19:08:56 -0800 Subject: [PATCH] kvm: selftests: aarch64: fix the failure check in kvm_set_gsi_routing_irqchip_check kvm_set_gsi_routing_irqchip_check(expect_failure=true) is used to check the error code returned by the kernel when trying to setup an invalid gsi routing table. The ioctl fails if "pin >= KVM_IRQCHIP_NUM_PINS", so kvm_set_gsi_routing_irqchip_check() should test the error only when "intid >= KVM_IRQCHIP_NUM_PINS+32". The issue is that the test check is "intid >= KVM_IRQCHIP_NUM_PINS", so for a case like "intid = KVM_IRQCHIP_NUM_PINS" the test wrongly assumes that the kernel will return an error. Fix this by using the right check. Signed-off-by: Ricardo Koller Reported-by: Reiji Watanabe Cc: Andrew Jones Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20220127030858.3269036-4-ricarkol@google.com --- tools/testing/selftests/kvm/aarch64/vgic_irq.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/kvm/aarch64/vgic_irq.c b/tools/testing/selftests/kvm/aarch64/vgic_irq.c index b701eb80128d..0106fc464afe 100644 --- a/tools/testing/selftests/kvm/aarch64/vgic_irq.c +++ b/tools/testing/selftests/kvm/aarch64/vgic_irq.c @@ -573,8 +573,8 @@ static void kvm_set_gsi_routing_irqchip_check(struct kvm_vm *vm, kvm_gsi_routing_write(vm, routing); } else { ret = _kvm_gsi_routing_write(vm, routing); - /* The kernel only checks for KVM_IRQCHIP_NUM_PINS. */ - if (intid >= KVM_IRQCHIP_NUM_PINS) + /* The kernel only checks e->irqchip.pin >= KVM_IRQCHIP_NUM_PINS */ + if (((uint64_t)intid + num - 1 - MIN_SPI) >= KVM_IRQCHIP_NUM_PINS) TEST_ASSERT(ret != 0 && errno == EINVAL, "Bad intid %u did not cause KVM_SET_GSI_ROUTING " "error: rc: %i errno: %i", intid, ret, errno);