syz-cluster: add a kvm config

Add a config to fuzz kvm patches.
Listen on the kvm mailing list.

Author: a-nogikh

syz-cluster/overlays/gke/prod/global-config.yaml

@@ -14,6 +14,7 @@ data:
       - bpf
       - linux-ext4
       - netfilter-devel
+      - kvm
     emailReporting:
       name: "syzbot ci"
       sender: dashapi

syz-cluster/pkg/api/api.go

@@ -209,6 +209,12 @@ const (
 
 // The list is ordered by decreasing importance.
 var FuzzConfigs = []*FuzzConfig{
+	{
+		Name:         `kvm`,
+		EmailLists:   []string{`kvm@vger.kernel.org`},
+		KernelConfig: `upstream-apparmor-kasan.config`,
+		CorpusURL:    allCorpusURL,
+	},
 	{
 		Name:         `bpf`,
 		EmailLists:   []string{`bpf@vger.kernel.org`},

syz-cluster/workflow/configs/kvm/base.cfg

@@ -0,0 +1,34 @@
+{
+    "name": "base",
+    "target": "linux/amd64",
+    "kernel_obj": "/base/obj",
+    "kernel_build_src": "/workdir",
+    "image": "/base/image",
+    "syzkaller": "/syzkaller",
+    "workdir": "/workdir",
+    "type": "qemu",
+    "enable_syscalls": [
+	"openat$kvm",
+	"openat$sev",
+	"close",
+	"ioctl$KVM*",
+	"syz_kvm*",
+	"mmap$KVM_VCPU",
+	"munmap",
+	"syz_memcpy_off$KVM_EXIT_MMIO",
+	"syz_memcpy_off$KVM_EXIT_HYPERCALL",
+	"eventfd2",
+	"write$eventfd"
+    ],
+    "procs": 3,
+    "sandbox": "none",
+    "experimental": {"cover_edges": false},
+    "vm": {
+      "count": 4,
+      "cmdline": "root=/dev/sda1 kvm-intel.nested=1",
+      "kernel": "/base/kernel",
+      "cpu": 2,
+      "mem": 3072,
+      "qemu_args": "-machine q35,nvdimm=on,accel=kvm,kernel-irqchip=split -cpu max,migratable=off -enable-kvm -smp 2,sockets=2,cores=1"
+    }
+}

syz-cluster/workflow/configs/kvm/patched.cfg

@@ -0,0 +1,10 @@
+{
+    "name": "patched",
+    "target": "linux/amd64",
+    "kernel_obj": "/patched/obj",
+    "image": "/patched/image",
+    "vm": {
+      "count": 10,
+      "kernel": "/patched/kernel"
+    }
+}