github.com/google/syzkaller@v0.0.0-20251211124644-a066d2bc4b02/sys/linux/test/arm64-syz_kvm_setup_syzos_vm-smc (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$arm64(r1, &(0x7f0000c00000/0x400000)=nil)
     7  #
     8  # KVM_SET_DEVICE_ATTR: group=KVM_ARM_VM_SMCCC_CTRL, attr=KVM_ARM_VM_SMCCC_FILTER
     9  # Filter: base=0xef000000, nr_functions=0x1000, action=KVM_SMCCC_FILTER_FWD_TO_USER
    10  # (Per SMC Calling Convention, 0xef000000-0xef001000 is an SMC64 fast call reserved range)
    11  # 
    12  ioctl$KVM_SET_DEVICE_ATTR_vm(r1, AUTO, &AUTO=@attr_arm64={0x0, 0x0, 0x0, &AUTO={0xef000000, 0x1000, 0x2, ""}})
    13  
    14  r3 = syz_kvm_add_vcpu$arm64(r2, &AUTO={0x0, &AUTO=[@smc={AUTO, AUTO, {0xef000000, [0x0, 0x1, 0x2, 0x3, 0x4]}}, @hvc={AUTO, AUTO, {0xef000000, [0x0, 0x1, 0x2, 0x3, 0x4]}}], AUTO}, 0x0, 0x0)
    15  
    16  #
    17  # Run two times, because SMC and HVC will exit.
    18  #
    19  ioctl$KVM_RUN(r3, AUTO, 0x0)
    20  ioctl$KVM_RUN(r3, AUTO, 0x0)
    21  
    22  r4 = ioctl$KVM_GET_VCPU_MMAP_SIZE(r0, AUTO)
    23  r5 = mmap$KVM_VCPU(&(0x7f0000009000/0x1000)=nil, r4, 0x3, 0x1, r3, 0x0)
    24  
    25  # Run till the end of guest_main(). 0xffffffffffffffff is UEXIT_END.
    26  #
    27  ioctl$KVM_RUN(r3, AUTO, 0x0)
    28  syz_kvm_assert_syzos_uexit$arm64(r5, 0xffffffffffffffff)