panic: runtime error: index out of range [4287725569] with length 50082

goroutine 1 [running]:
compress/flate.(*compressor).findMatch(0xc000036a00?, 0xc2a0, 0x68031f?, 0x68116c?, 0xc000d8e5c0?)
	/usr/local/go/src/compress/flate/deflate.go:256 +0x29c
compress/flate.(*compressor).deflate(0xc000416000)
	/usr/local/go/src/compress/flate/deflate.go:436 +0x19e
compress/flate.(*compressor).write(0xc000416000, {0xc000728fe8?, 0xee65, 0xbbb560?})
	/usr/local/go/src/compress/flate/deflate.go:544 +0x72
compress/flate.(*Writer).Write(...)
	/usr/local/go/src/compress/flate/deflate.go:710
github.com/google/syzkaller/pkg/rpctype.(*flateConn).Write(0xc0002f2390, {0xc000728fe8?, 0xc000799308?, 0xc0?})
	/syzkaller/gopath/src/github.com/google/syzkaller/pkg/rpctype/rpc.go:128 +0x26
bufio.(*Writer).Write(0xc000daa180, {0xc000728006?, 0x9c8825?, 0xc000036a90?})
	/usr/local/go/src/bufio/bufio.go:679 +0xea
encoding/gob.(*Encoder).writeMessage(0xc000036a00, {0xd9b760, 0xc000daa180}, 0xc000036a38)
	/usr/local/go/src/encoding/gob/encoder.go:82 +0x3bf
encoding/gob.(*Encoder).EncodeValue(0xc000036a00, {0xa95280?, 0xc000d9efc0?, 0xc0007994f0?})
	/usr/local/go/src/encoding/gob/encoder.go:253 +0x448
encoding/gob.(*Encoder).Encode(0x256e0b9125bc5a62?, {0xa95280?, 0xc000d9efc0?})
	/usr/local/go/src/encoding/gob/encoder.go:176 +0x75
net/rpc.(*gobClientCodec).WriteRequest(0xc0002f2480, 0xc0002f24b0?, {0xa95280, 0xc000d9efc0})
	/usr/local/go/src/net/rpc/client.go:221 +0x53
net/rpc.(*Client).send(0xc000079380, 0xc000618690)
	/usr/local/go/src/net/rpc/client.go:91 +0x224
net/rpc.(*Client).Go(0xc000079380, {0xc29091, 0x14}, {0xa95280, 0xc000d9efc0}, {0xa952c0, 0xc000618640}, 0xc000825260)
	/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(0xc000010300, {0xc29091, 0x14}, {0xa95280, 0xc000d9efc0}, {0xa952c0, 0xc000618640})
	/syzkaller/gopath/src/github.com/google/syzkaller/pkg/rpctype/rpc.go:88 +0x145
main.(*FuzzerTool).exchangeDataCall(0xc000035ad0, {0xc0003b6c08, 0x7, 0x8}, 0xc3661a6)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:287 +0x216
main.(*FuzzerTool).exchangeDataWorker(0xc000035ad0)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:327 +0x76
main.main()
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:214 +0x130a