syz-cluster: add bpf tree info and configs

Fuzz bpf patches differently from net patches.

Monitor netfilter and bpf mailing lists

Author: a-nogikh

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

@@ -11,7 +11,9 @@ data:
     parallelWorkflows: 7
     loreArchives:
       - netdev
+      - bpf
       - linux-ext4
+      - netfilter-devel
     emailReporting:
       name: "syzbot ci"
       sender: dashapi

syz-cluster/pkg/api/api.go

@@ -204,18 +204,39 @@ var DefaultTrees = []*Tree{
 		KernelConfig: `upstream-apparmor-kasan.config`,
 		FuzzConfig:   `net`,
 	},
+	{
+		Name:         `bpf`,
+		URL:          `https://kernel.googlesource.com/pub/scm/linux/kernel/git/bpf/bpf.git`,
+		Branch:       `master`,
+		Priority:     TreePriorityNever,
+		EmailLists:   []string{`bpf@vger.kernel.org`},
+		KernelConfig: `upstream-apparmor-kasan.config`,
+		FuzzConfig:   `bpf`,
+	},
+	{
+		Name:         `bpf-next`,
+		URL:          `https://kernel.googlesource.com/pub/scm/linux/kernel/git/bpf/bpf-next.git`,
+		Branch:       `master`,
+		Priority:     2,
+		EmailLists:   []string{`bpf@vger.kernel.org`},
+		KernelConfig: `upstream-apparmor-kasan.config`,
+		FuzzConfig:   `bpf`,
+	},
 }
 
 const (
 	netCorpusURL      = `https://storage.googleapis.com/syzkaller/corpus/ci-upstream-net-kasan-gce-corpus.db`
+	bpfCorpusURL      = `https://storage.googleapis.com/syzkaller/corpus/ci-upstream-bpf-kasan-gce-corpus.db`
 	corpusFallbackURL = `https://storage.googleapis.com/syzkaller/corpus/ci-upstream-kasan-gce-root-corpus.db`
 )
 
 // TODO: find a better place for it.
 func (tree *Tree) CorpusURL() string {
 	switch tree.FuzzConfig {
-	case `net`, `net-next`, `nf`, `nf-next`:
+	case `net`:
 		return netCorpusURL
+	case `bpf`:
+		return bpfCorpusURL
 	default:
 		return corpusFallbackURL
 	}

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

@@ -0,0 +1,30 @@
+{
+    "name": "base",
+    "target": "linux/amd64",
+    "kernel_obj": "/base/obj",
+    "kernel_build_src": "/workdir",
+    "image": "/base/image",
+    "syzkaller": "/syzkaller",
+    "workdir": "/workdir",
+    "type": "qemu",
+    "enable_syscalls": [
+	"bpf", "mkdir", "mount$bpf", "unlink", "close",
+	"perf_event_open*", "ioctl$PERF*", "getpid", "gettid",
+	"socketpair", "sendmsg", "recvmsg", "setsockopt$sock_attach_bpf",
+	"socket$kcm", "ioctl$sock_kcm*", "syz_clone",
+	"mkdirat$cgroup*", "openat$cgroup*", "write$cgroup*",
+	"openat$tun", "write$tun", "ioctl$TUN*", "ioctl$SIOCSIFHWADDR",
+	"openat$ppp", "syz_open_procfs$namespace"
+    ],
+    "procs": 3,
+    "sandbox": "none",
+    "experimental": {"cover_edges": false},
+    "vm": {    
+      "count": 4,
+      "cmdline": "root=/dev/sda1",
+      "kernel": "/base/kernel",
+      "cpu": 2,
+      "mem": 3072,
+      "qemu_args": "-machine pc-q35-7.1 -enable-kvm -smp 2,sockets=2,cores=1"
+    }
+}

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

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