github.com/google/syzkaller@v0.0.0-20251211124644-a066d2bc4b02/sys/linux/test/arm64-syz_kvm_setup_syzos_vm-vgicv3 (about)

     1  #
     2  # requires: arch=arm64 -threaded
     3  #
     4  r0 = openat$kvm(0, &AUTO='/dev/kvm\x00', 0x0, 0x0)
     5  r1 = ioctl$KVM_CREATE_VM(r0, AUTO, 0x0)
     6  r2 = syz_kvm_setup_syzos_vm$arm64(r1, &(0x7f0000c00000/0x400000)=nil)
     7  r3 = syz_kvm_add_vcpu$arm64(r2, &AUTO={0x0, &AUTO=[@irq_setup={AUTO, AUTO, {0x1, 0x20}}], AUTO}, 0x0, 0x0)
     8  syz_kvm_vgic_v3_setup(r1, 0x1, 0x100)
     9  
    10  r4 = ioctl$KVM_GET_VCPU_MMAP_SIZE(r0, AUTO)
    11  r5 = mmap$KVM_VCPU(&(0x7f0000009000/0x1000)=nil, r4, 0x3, 0x1, r3, 0x0)
    12  # Run till the end of guest_main(). 0xffffffffffffffff is UEXIT_END.
    13  #
    14  ioctl$KVM_RUN(r3, AUTO, 0x0)
    15  syz_kvm_assert_syzos_uexit$arm64(r5, 0xffffffffffffffff)
    16  #
    17  # Calling KVM_RUN here again would result in infinite loop.
    18  # Instead, signal SPI 32 (0x1000020), so that the guest can execute another uexit in the IRQ handler.
    19  #
    20  ioctl$KVM_IRQ_LINE(r1, AUTO, &AUTO={0x1000020, 0x1})
    21  ioctl$KVM_RUN(r3, AUTO, 0x0)
    22  # 0xfffffffffffffffe is UEXIT_IRQ.
    23  #
    24  syz_kvm_assert_syzos_uexit$arm64(r5, 0xfffffffffffffffe)