Decompression not working lookbehind underrun

[sudeepigntion]

It does not decompress packets, getting lookbehind underrun but I am using java anarres.lzo and I decompress the data

[sudeepigntion]

Sample of the input 1a02595a2a2a313233004000054c95fdd700001c284028021dec213c00e04c0136f13220a0000701d600020000d1a90001601c600315722080144010034b4c9385eb003a00014b000a0c1740ec4002041a000e0834a02e0bb8000e06cca02e012c406dc928005e028aa02e0096000a11d5c02c411e11daa02e1cb6000e3f5ca02e02ee5d6128008e474fc02f0040bda0200140c66980601d80e2cc290002d1b228035600005c010240d1002002000041d70119f42702370119efc32577000efea6a02e1d4c000efd48e2342c00ee5cf72800ee5cfc008d002008000340cf33833740bfa42701402c02cc110000

[rminnich]

I can confirm the problem.

package main

import (
	"bytes"
	"encoding/hex"
	"log"
	"os"
	"os/exec"

	lzo "github.com/rasky/go-lzo"
)

var hosts = `127.0.0.1	localhost
127.0.1.1	rminnich-MacBookPro

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

192.168.0.1 centre
192.168.0.2 up
192.168.0.3 api2 u00:07:32:4b:f9:f3
192.168.0.4 api3 u00:07:32:4c:04:e6
192.168.0.5 api4 u00:07:32:4c:25:36
192.168.0.6 rome r uc8:b3:73:1f:44:55
192.168.0.7 a apu2 u00:0d:b9:49:0f:04
192.168.0.9 a300 ua8:a1:59:23:6b:75
192.168.0.239 router

# dresden
192.168.0.10 dellbmc u98:90:96:ff:fa:81
192.168.0.11 dell u4c:d9:8f:7f:58:93
192.168.0.12 upxtreme upx u u00:07:32:73:92:bb
192.168.0.13 upxtreme upx u u00:07:32:73:92:bc

192.168.86.70 zero
192.168.86.86 x230 corebootthinkpad tp

192.168.0.100 dlpower dl
`

func main() {
	c := exec.Command("lzop", "-1", "-c")
	c.Stdin = bytes.NewReader([]byte(hosts))
	o, err := c.CombinedOutput()
	if err != nil {
		log.Fatal(err)
	}
	w := hex.Dumper(os.Stdout)
	log.Println("original")
	if _, err := w.Write([]byte(hosts)); err != nil {
		log.Fatal(err)
	}
	w = hex.Dumper(os.Stdout)
	log.Println("\nFrom lzop:")
	if _, err := w.Write(o[:]); err != nil {
		log.Fatal(err)
	}
	w = hex.Dumper(os.Stdout)
	kb, err := lzo.Decompress1X(bytes.NewReader(o), 0, 0)
	if err != nil {
		log.Fatal(err)
	}

	log.Println("\nFrom package")
	if _, err := w.Write(kb[:0x400]); err != nil {
		log.Fatal(err)
	}

}

gets the underrun

Question is, did decompress work at some point, I'll try a bisect.

[rminnich]

so far I can not find a commit for which decompress works ...