From 8437e9b3412387dade0961faf0c3616de3903d91 Mon Sep 17 00:00:00 2001
From: Alexander Potapenko <glider@google.com>
Date: Fri, 26 Sep 2025 17:33:06 +0200
Subject: sys/linux/test: add amd64-syz_kvm_setup_syzos_vm-default_irq_handler

Verify that the default IRQ handler correctly handles an injected
interrupt.
---
 ...md64-syz_kvm_setup_syzos_vm-default_irq_handler | 26 ++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 sys/linux/test/amd64-syz_kvm_setup_syzos_vm-default_irq_handler

(limited to 'sys/linux')

diff --git a/sys/linux/test/amd64-syz_kvm_setup_syzos_vm-default_irq_handler b/sys/linux/test/amd64-syz_kvm_setup_syzos_vm-default_irq_handler
new file mode 100644
index 000000000..b7ef63f8c
--- /dev/null
+++ b/sys/linux/test/amd64-syz_kvm_setup_syzos_vm-default_irq_handler
@@ -0,0 +1,26 @@
+#
+# requires: arch=amd64 -threaded
+#
+r0 = openat$kvm(0, &AUTO='/dev/kvm\x00', 0x0, 0x0)
+r1 = ioctl$KVM_CREATE_VM(r0, AUTO, 0x0)
+r2 = syz_kvm_setup_syzos_vm$x86(r1, &(0x7f0000c00000/0x400000)=nil)
+#
+# Set an IRQ handler for vector 0x80.
+#
+r3 = syz_kvm_add_vcpu$x86(r2, &AUTO={0x0, &AUTO=[@uexit={AUTO, AUTO, 0xaaaa}, @uexit={AUTO, AUTO, 0xbbbb}], AUTO})
+r4 = ioctl$KVM_GET_VCPU_MMAP_SIZE(r0, AUTO)
+r5 = mmap$KVM_VCPU(&(0x7f0000009000/0x1000)=nil, r4, 0x3, 0x1, r3, 0x0)
+
+# Run till the first uexit.
+#
+ioctl$KVM_RUN(r3, AUTO, 0x0)
+syz_kvm_assert_syzos_uexit$x86(r5, 0xaaaa)
+
+# Inject interrupt 0x80.
+#
+ioctl$KVM_INTERRUPT(r3, AUTO, &AUTO=0x80)
+ioctl$KVM_RUN(r3, AUTO, 0x0)
+
+# Run till the second uexit.
+#
+syz_kvm_assert_syzos_uexit$x86(r5, 0xbbbb)
-- 
cgit mrf-deployment