github.com/google/syzkaller@v0.0.0-20251211124644-a066d2bc4b02/sys/linux/test/arm64-syz_kvm_setup_syzos_vm-vgicv3-unroll (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  #
     9  # Implementing syz_kvm_vgic_v3_setup(r1, 0x1, 0x100) using raw ioctls:
    10  #
    11  ioctl$KVM_CREATE_DEVICE(r1, AUTO, &AUTO={0x7, <r4=>0xffffffffffffffff, 0x0})
    12  ioctl$KVM_SET_DEVICE_ATTR(r4, AUTO, &AUTO=@attr_arm64={0x0, 0x3, 0x0, &AUTO=0x100})
    13  ioctl$KVM_SET_DEVICE_ATTR(r4, AUTO, &AUTO=@attr_arm64={0x0, 0x0, 0x2, &AUTO=0x08000000})
    14  ioctl$KVM_SET_DEVICE_ATTR(r4, AUTO, &AUTO=@attr_arm64={0x0, 0x0, 0x5, &AUTO=0x400000080a0000})
    15  ioctl$KVM_SET_DEVICE_ATTR(r4, AUTO, &AUTO=@attr_arm64={0x0, 0x4, 0x0, 0x0})
    16  #
    17  # Map struct kvm_run for the VCPU.
    18  #
    19  r5 = ioctl$KVM_GET_VCPU_MMAP_SIZE(r0, AUTO)
    20  r6 = mmap$KVM_VCPU(&(0x7f0000009000/0x1000)=nil, r5, 0x3, 0x1, r3, 0x0)
    21  
    22  ioctl$KVM_RUN(r3, AUTO, 0x0)
    23  syz_kvm_assert_syzos_uexit$arm64(r6, 0xffffffffffffffff)
    24  #
    25  # Calling KVM_RUN here again would result in infinite loop.
    26  # Instead, signal SPI 32 (0x1000020), so that the guest can execute another uexit in the IRQ handler.
    27  #
    28  ioctl$KVM_IRQ_LINE(r1, AUTO, &AUTO={0x1000020, 0x1})
    29  ioctl$KVM_RUN(r3, AUTO, 0x0)
    30  syz_kvm_assert_syzos_uexit$arm64(r6, 0xfffffffffffffffe)