panic: runtime error: index out of range [4289560577] with length 62186

goroutine 1 [running]:
compress/flate.(*compressor).findMatch(0x0?, 0xf1e8, 0x67bd7f?, 0x67cbcc?, 0xc00033c200?)
	/usr/local/go/src/compress/flate/deflate.go:256 +0x29c
compress/flate.(*compressor).deflate(0xc000500000)
	/usr/local/go/src/compress/flate/deflate.go:436 +0x19e
compress/flate.(*compressor).write(0xc000500000, {0xc000730fe8?, 0xa3b1, 0xbafc60?})
	/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(0xc0001e4c30, {0xc000730fe8?, 0xc0004453b8?, 0xc0?})
	/syzkaller/gopath/src/github.com/google/syzkaller/pkg/rpctype/rpc.go:153 +0x26
bufio.(*Writer).Write(0xc000322040, {0xc000730006?, 0x9c5465?, 0xc0003463b0?})
	/usr/local/go/src/bufio/bufio.go:679 +0xea
encoding/gob.(*Encoder).writeMessage(0xc000346320, {0xd23c80, 0xc000322040}, 0xc000346358)
	/usr/local/go/src/encoding/gob/encoder.go:82 +0x3bf
encoding/gob.(*Encoder).EncodeValue(0xc000346320, {0xa8c5a0?, 0xc0002c7ac0?, 0x10?})
	/usr/local/go/src/encoding/gob/encoder.go:253 +0x448
encoding/gob.(*Encoder).Encode(0x8277a273540a97ae?, {0xa8c5a0?, 0xc0002c7ac0?})
	/usr/local/go/src/encoding/gob/encoder.go:176 +0x75
net/rpc.(*gobClientCodec).WriteRequest(0xc0000a4870, 0xc0000a4a20?, {0xa8c5a0, 0xc0002c7ac0})
	/usr/local/go/src/net/rpc/client.go:221 +0x53
net/rpc.(*Client).send(0xc000078de0, 0xc000616a00)
	/usr/local/go/src/net/rpc/client.go:91 +0x224
net/rpc.(*Client).Go(0xc000078de0, {0xc1cd9d, 0x14}, {0xa8c5a0, 0xc0002c7ac0}, {0xa8c5e0, 0xc0006169b0}, 0xc0005af380)
	/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(0xaed580?, {0xc1cd9d, 0x14}, {0xa8c5a0, 0xc0002c7ac0}, {0xa8c5e0, 0xc0006169b0})
	/syzkaller/gopath/src/github.com/google/syzkaller/pkg/rpctype/rpc.go:110 +0x165
main.(*FuzzerTool).exchangeDataCall(0xc0000356b0, {0xc00024a008, 0x5, 0x8}, 0x387fe7)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:294 +0x216
main.(*FuzzerTool).exchangeDataWorker(0xc0000356b0)
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:334 +0x76
main.main()
	/syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:221 +0x13bf