From 796f6c5861b465fbe4e4fd608a2a61534ecb8d05 Mon Sep 17 00:00:00 2001 From: Alexander Potapenko Date: Wed, 23 Jul 2025 16:28:11 +0200 Subject: sys/linux/test: add test for wrmsr/rdmsr on x86 amd64-syz_kvm_setup_syzos_vm-wrmsr-rdmsr is a test executing SYZOS_API_WRMSR and SYZOS_API_RDMSR on x86. --- sys/linux/test/amd64-syz_kvm_setup_syzos_vm-wrmsr-rdmsr | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 sys/linux/test/amd64-syz_kvm_setup_syzos_vm-wrmsr-rdmsr (limited to 'sys') diff --git a/sys/linux/test/amd64-syz_kvm_setup_syzos_vm-wrmsr-rdmsr b/sys/linux/test/amd64-syz_kvm_setup_syzos_vm-wrmsr-rdmsr new file mode 100644 index 000000000..519432ca5 --- /dev/null +++ b/sys/linux/test/amd64-syz_kvm_setup_syzos_vm-wrmsr-rdmsr @@ -0,0 +1,17 @@ +# +# 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$x86(r1, &(0x7f0000c00000/0x400000)=nil) +# +# 0x1b is IA32_APIC_BASE_MSR, let's write to it and read it. +# +r3 = syz_kvm_add_vcpu$x86(r2, &AUTO={0x0, &AUTO=[@wrmsr={AUTO, AUTO, {0x1b, 0xfffff000}}, @rdmsr={AUTO, AUTO, {0x1b}}], 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 end of guest_main(). 0xffffffffffffffff is UEXIT_END. +# +ioctl$KVM_RUN(r3, AUTO, 0x0) +syz_kvm_assert_syzos_uexit$x86(r5, 0xffffffffffffffff) -- cgit mrf-deployment