diff options
| author | Alexander Potapenko <glider@google.com> | 2025-09-15 16:23:10 +0200 |
|---|---|---|
| committer | Alexander Potapenko <glider@google.com> | 2025-09-19 08:38:14 +0000 |
| commit | adbde109f03932b9eee8106ce8bad4bc506d0713 (patch) | |
| tree | 1ba09463fde777a99591884afea2ad12255e2cc6 /sys/linux/test | |
| parent | dd232cacbbd407c55bf26299264db0a2c3f0cfcf (diff) | |
sys/linux: executor: add IN_DX and OUT_DX to SYZOS x86 API
Add SYZOS calls that correspond to the IN and OUT x86 instructions
that perform port I/O.
These instructions have different variants, for now we just implement
the one that takes the port number from DX instead of encoding it in
the opcode.
Diffstat (limited to 'sys/linux/test')
| -rw-r--r-- | sys/linux/test/amd64-syz_kvm_setup_syzos_vm-in_dx-out_dx | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/sys/linux/test/amd64-syz_kvm_setup_syzos_vm-in_dx-out_dx b/sys/linux/test/amd64-syz_kvm_setup_syzos_vm-in_dx-out_dx new file mode 100644 index 000000000..e6897f68a --- /dev/null +++ b/sys/linux/test/amd64-syz_kvm_setup_syzos_vm-in_dx-out_dx @@ -0,0 +1,19 @@ +# +# 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$x86(r1, &(0x7f0000c00000/0x400000)=nil) + +# Writing to debug register DR3. +# +r3 = syz_kvm_add_vcpu$x86(r2, &AUTO={0x0, &AUTO=[@in_dx={AUTO, AUTO, {0x123, 0x2}}, @out_dx={AUTO, AUTO, {0x456, 0x4, 0xffffffff}}], AUTO}) +r4 = ioctl$KVM_GET_VCPU_MMAP_SIZE(r0, AUTO) +r5 = mmap$KVM_VCPU(&(0x7f0000009000/0x1000)=nil, r4, 0x3, 0x1, r3, 0x0) + +# Ensure that both IN and OUT exit with KVM_EXIT_IO. +# +ioctl$KVM_RUN(r3, AUTO, 0x0) +syz_kvm_assert_syzos_kvm_exit$x86(r5, 0x2) +ioctl$KVM_RUN(r3, AUTO, 0x0) +syz_kvm_assert_syzos_kvm_exit$x86(r5, 0x2) |