test: Set FSE decompress fuzzer max limit (#868)

* test: Set FSE decompress fuzzer max limit

Avoids timeout on large output.

Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=63059

* Add to CI & Add more baseline

Author: klauspost

.github/workflows/go.yml

@@ -147,7 +147,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.20.x
+          go-version: 1.21.x
 
       - name: Checkout code
         uses: actions/checkout@v2
@@ -201,3 +201,8 @@ jobs:
       - name: zip/FuzzReader
         run: go test -run=none -fuzz=FuzzReader -fuzztime=500000x -test.fuzzminimizetime=10ms ./zip/.
 
+      - name: fse/FuzzCompress
+        run: go test -run=none -fuzz=FuzzCompress -fuzztime=1000000x -test.fuzzminimizetime=10ms ./fse/.
+
+      - name: fse/FuzzDecompress
+        run: go test -run=none -fuzz=FuzzDecompress -fuzztime=1000000x -test.fuzzminimizetime=10ms ./fse/.

fse/fuzz_test.go

@@ -32,9 +32,11 @@ func FuzzCompress(f *testing.F) {
 }
 
 func FuzzDecompress(f *testing.F) {
-	fuzz.AddFromZip(f, "testdata/fse_decompress.zip", fuzz.TypeRaw, false)
+	// Input is mixed, but TypeGoFuzz will fall back to raw input.
+	fuzz.AddFromZip(f, "testdata/fse_decompress.zip", fuzz.TypeGoFuzz, false)
 	f.Fuzz(func(t *testing.T, buf0 []byte) {
 		var s2 Scratch
+		s2.DecompressLimit = 128 << 10
 		//Decompress
 		got, err := Decompress(buf0, &s2)
 		if err != nil || len(got) == 0 {