panic: runtime error: index out of range [4292706306] with length 47348

goroutine 55 [running]:
compress/flate.(*compressor).findMatch(0xc0002725c0?, 0xb7f2, 0xc0003ea000?, 0x67cd4a?, 0x67e505?)
	/usr/local/go/src/compress/flate/deflate.go:256 +0x29c
compress/flate.(*compressor).deflate(0xc000580000)
	/usr/local/go/src/compress/flate/deflate.go:436 +0x19e
compress/flate.(*compressor).syncFlush(0xc000580000)
	/usr/local/go/src/compress/flate/deflate.go:558 +0x3b
compress/flate.(*Writer).Flush(...)
	/usr/local/go/src/compress/flate/deflate.go:725
github.com/google/syzkaller/pkg/rpctype.(*flateConn).Write(0xc00053d920, {0xc0006bafe8?, 0xc000375808?, 0xc0?})
	/syzkaller/gopath/src/github.com/google/syzkaller/pkg/rpctype/rpc.go:132 +0x45
bufio.(*Writer).Write(0xc0005400c0, {0xc0006ba006?, 0xa08d45?, 0xc0004178f0?})
	/usr/local/go/src/bufio/bufio.go:679 +0xea
encoding/gob.(*Encoder).writeMessage(0xc000417860, {0xd98fe0, 0xc0005400c0}, 0xc000417898)
	/usr/local/go/src/encoding/gob/encoder.go:82 +0x3bf
encoding/gob.(*Encoder).EncodeValue(0xc000417860, {0xa931c0?, 0xc000541a80?, 0xc0003759f0?})
	/usr/local/go/src/encoding/gob/encoder.go:253 +0x448
encoding/gob.(*Encoder).Encode(0x33793cb729ab934c?, {0xa931c0?, 0xc000541a80?})
	/usr/local/go/src/encoding/gob/encoder.go:176 +0x75
net/rpc.(*gobClientCodec).WriteRequest(0xc00053dc20, 0xc00053dc50?, {0xa931c0, 0xc000541a80})
	/usr/local/go/src/net/rpc/client.go:221 +0x53
net/rpc.(*Client).send(0xc0003ad560, 0xc000413e00)
	/usr/local/go/src/net/rpc/client.go:91 +0x224
net/rpc.(*Client).Go(0xc0003ad560, {0xc26e69, 0x14}, {0xa931c0, 0xc000541a80}, {0xa93200, 0xc000413db0}, 0xc0009296e0)
	/usr/local/go/src/net/rpc/client.go:315 +0x13a
net/rpc.(*Client).Call(...)
	/usr/local/go/src/net/rpc/client.go:321
github.com/google/syzkaller/pkg/rpctype.(*RPCClient).Call(0xc000010348, {0xc26e69, 0x14}, {0xa931c0, 0xc000541a80}, {0xa93200, 0xc000413db0})
	/syzkaller/gopath/src/github.com/google/syzkaller/pkg/rpctype/rpc.go:88 +0x145
main.(*FuzzerTool).exchangeDataCall(0xc0005445b0, {0xc00090d550, 0x1, 0x1}, 0x2f5638)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:264 +0x21c
main.(*FuzzerTool).exchangeDataWorker(0xc0005445b0)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:304 +0x76
created by main.main in goroutine 1
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:202 +0x1168