panic: chacha20poly1305: invalid buffer overlap

[SiJinmin]

服务端启动一会以后就发生了这个错误

[riobard]

Did you use with Go 1.11?

[xqdoo00o]

I think it's a compatible issue with ss-android that turned on DNS forward option .

Below tests env:
ss-android version: 4.5.7 with turned on DNS forward option,
network: China Unicom 4g,
go version: 1.11.

Encryption	Connection test	Server log
AEAD_CHACHA20_POLY1305	Not passed	panic: chacha20poly1305: invalid buffer overlap
Stream Cipher	Not passed	UDP remote write error: write udp [::]:58739->8.8.8.8:53: sendto: message too long
AEAD_AES_xxx_GCM	Not Passed	panic: crypto/cipher: invalid buffer overlap

​
If I turn off DNS forward option in ss-android, all tests Passed.

[riobard]

Please try v0.0.10 https://github.com/shadowsocks/go-shadowsocks2/releases/tag/v0.0.10

[xqdoo00o]

Still the same errors, except for AES_GCM.
Maybe the release built with go 1.10.3?

[lixin9311]

It's a feature introduced in go 1.11 to check the overlapping of the buffers upon decryption.
For more information, see #95
Fixed in #109