diff --git a/.golangci.yml b/.golangci.yml
index 8c4834bc..3b311bff 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -40,6 +40,7 @@ linters:
     - godot
     - gocognit
     - funlen
+    - dupl
   disable:
     - bodyclose
     - depguard
@@ -108,3 +109,10 @@ issues:
         - lll
     - path: (sys/.*/init.*|sys/targets/common.go)
       text: "don't use ALL_CAPS in Go names"
+    # TODO: this is bad, need to fix and remove the suppression.
+    - path: (pkg/report/(net|open)bsd.*)
+      linters:
+        - dupl
+    - path: (dashboard/app/.*_test\.go)
+      linters:
+        - dupl
diff --git a/pkg/vcs/git_repo_test.go b/pkg/vcs/git_repo_test.go
index 2e768a72..2bb8570d 100644
--- a/pkg/vcs/git_repo_test.go
+++ b/pkg/vcs/git_repo_test.go
@@ -315,10 +315,29 @@ func TestBisect(t *testing.T) {
 		commits = append(commits, com.Hash)
 		t.Logf("%v %v", com.Hash, com.Title)
 	}
+	type predFunc func() (BisectResult, error)
 	type Test struct {
-		pred   func() (BisectResult, error)
+		pred   predFunc
 		result []string
 	}
+	makePred := func(res1, res2, res3 BisectResult) predFunc {
+		return func() (BisectResult, error) {
+			current, err := repo.repo.HeadCommit()
+			if err != nil {
+				t.Fatal(err)
+			}
+			switch current.Hash {
+			case commits[1]:
+				return res1, nil
+			case commits[2]:
+				return res2, nil
+			case commits[3]:
+				return res3, nil
+			default:
+				return 0, fmt.Errorf("unknown commit %v", current.Hash)
+			}
+		}
+	}
 	tests := []Test{
 		{
 			// All are bad.
@@ -343,62 +362,17 @@ func TestBisect(t *testing.T) {
 		},
 		{
 			// Some are skipped.
-			func() (BisectResult, error) {
-				current, err := repo.repo.HeadCommit()
-				if err != nil {
-					t.Fatal(err)
-				}
-				switch current.Hash {
-				case commits[1]:
-					return BisectSkip, nil
-				case commits[2]:
-					return BisectSkip, nil
-				case commits[3]:
-					return BisectGood, nil
-				default:
-					return 0, fmt.Errorf("unknown commit %v", current.Hash)
-				}
-			},
+			makePred(BisectSkip, BisectSkip, BisectGood),
 			[]string{commits[4]},
 		},
 		{
 			// Some are skipped.
-			func() (BisectResult, error) {
-				current, err := repo.repo.HeadCommit()
-				if err != nil {
-					t.Fatal(err)
-				}
-				switch current.Hash {
-				case commits[1]:
-					return BisectGood, nil
-				case commits[2]:
-					return BisectSkip, nil
-				case commits[3]:
-					return BisectBad, nil
-				default:
-					return 0, fmt.Errorf("unknown commit %v", current.Hash)
-				}
-			},
+			makePred(BisectGood, BisectSkip, BisectBad),
 			[]string{commits[2], commits[3]},
 		},
 		{
 			// Some are skipped.
-			func() (BisectResult, error) {
-				current, err := repo.repo.HeadCommit()
-				if err != nil {
-					t.Fatal(err)
-				}
-				switch current.Hash {
-				case commits[1]:
-					return BisectSkip, nil
-				case commits[2]:
-					return BisectSkip, nil
-				case commits[3]:
-					return BisectGood, nil
-				default:
-					return 0, fmt.Errorf("unknown commit %v", current.Hash)
-				}
-			},
+			makePred(BisectSkip, BisectSkip, BisectGood),
 			[]string{commits[4]},
 		},
 	}
diff --git a/sys/targets/targets.go b/sys/targets/targets.go
index 47b3d8a9..b33dd560 100644
--- a/sys/targets/targets.go
+++ b/sys/targets/targets.go
@@ -264,23 +264,7 @@ var List = map[string]map[string]*Target{
 			KernelHeaderArch: "x64",
 			CCompiler:        sourceDirVar + "/prebuilt/third_party/clang/linux-x64/bin/clang",
 			Objdump:          sourceDirVar + "/prebuilt/third_party/clang/linux-x64/bin/llvm-objdump",
-			CFlags: []string{
-				"-Wno-deprecated",
-				"--target=x86_64-fuchsia",
-				"-ldriver",
-				"-lfdio",
-				"-lzircon",
-				"--sysroot", sourceDirVar + "/out/x64/zircon_toolchain/obj/zircon/public/sysroot/sysroot",
-				"-I", sourceDirVar + "/zircon/system/ulib/fdio/include",
-				"-I", sourceDirVar + "/zircon/system/ulib/fidl/include",
-				"-I", sourceDirVar + "/src/lib/ddk/include",
-				"-I", sourceDirVar + "/out/x64/fidling/gen/sdk/fidl/fuchsia.device",
-				"-I", sourceDirVar + "/out/x64/fidling/gen/sdk/fidl/fuchsia.device.manager",
-				"-I", sourceDirVar + "/out/x64/fidling/gen/sdk/fidl/fuchsia.hardware.nand",
-				"-I", sourceDirVar + "/out/x64/fidling/gen/sdk/fidl/fuchsia.hardware.usb.peripheral",
-				"-I", sourceDirVar + "/out/x64/fidling/gen/zircon/vdso/zx",
-				"-L", sourceDirVar + "/out/x64/x64-shared",
-			},
+			CFlags:           fuchsiaCFlags("x64", "x86_64"),
 		},
 		"arm64": {
 			PtrSize:          8,
@@ -288,23 +272,7 @@ var List = map[string]map[string]*Target{
 			KernelHeaderArch: "arm64",
 			CCompiler:        sourceDirVar + "/prebuilt/third_party/clang/linux-x64/bin/clang",
 			Objdump:          sourceDirVar + "/prebuilt/third_party/clang/linux-x64/bin/llvm-objdump",
-			CFlags: []string{
-				"-Wno-deprecated",
-				"--target=aarch64-fuchsia",
-				"-ldriver",
-				"-lfdio",
-				"-lzircon",
-				"--sysroot", sourceDirVar + "/out/arm64/zircon_toolchain/obj/zircon/public/sysroot/sysroot",
-				"-I", sourceDirVar + "/zircon/system/ulib/fdio/include",
-				"-I", sourceDirVar + "/zircon/system/ulib/fidl/include",
-				"-I", sourceDirVar + "/src/lib/ddk/include",
-				"-I", sourceDirVar + "/out/arm64/fidling/gen/sdk/fidl/fuchsia.device",
-				"-I", sourceDirVar + "/out/arm64/fidling/gen/sdk/fidl/fuchsia.device.manager",
-				"-I", sourceDirVar + "/out/arm64/fidling/gen/sdk/fidl/fuchsia.hardware.nand",
-				"-I", sourceDirVar + "/out/arm64/fidling/gen/sdk/fidl/fuchsia.hardware.usb.peripheral",
-				"-I", sourceDirVar + "/out/arm64/fidling/gen/zircon/vdso/zx",
-				"-L", sourceDirVar + "/out/arm64/arm64-shared",
-			},
+			CFlags:           fuchsiaCFlags("arm64", "aarch64"),
 		},
 	},
 	"windows": {
@@ -419,6 +387,27 @@ var (
 	}
 )
 
+func fuchsiaCFlags(arch, clangArch string) []string {
+	out := sourceDirVar + "/out/" + arch
+	return []string{
+		"-Wno-deprecated",
+		"--target", clangArch + "-fuchsia",
+		"-ldriver",
+		"-lfdio",
+		"-lzircon",
+		"--sysroot", out + "/zircon_toolchain/obj/zircon/public/sysroot/sysroot",
+		"-I", sourceDirVar + "/zircon/system/ulib/fdio/include",
+		"-I", sourceDirVar + "/zircon/system/ulib/fidl/include",
+		"-I", sourceDirVar + "/src/lib/ddk/include",
+		"-I", out + "/fidling/gen/sdk/fidl/fuchsia.device",
+		"-I", out + "/fidling/gen/sdk/fidl/fuchsia.device.manager",
+		"-I", out + "/fidling/gen/sdk/fidl/fuchsia.hardware.nand",
+		"-I", out + "/fidling/gen/sdk/fidl/fuchsia.hardware.usb.peripheral",
+		"-I", out + "/fidling/gen/zircon/vdso/zx",
+		"-L", out + "/" + arch + "-shared",
+	}
+}
+
 func init() {
 	for OS, archs := range List {
 		for arch, target := range archs {