[GH-ISSUE #2272] XTCP 出现了invalid memory address or nil pointer dereference #1804

New issue

Closed

opened 2026-05-05 13:09:57 -06:00 by gitea-mirror · 1 comment

gitea-mirror commented

2026-05-05 13:09:57 -06:00

Owner

Originally created by @iikira on GitHub (Mar 3, 2021).
Original GitHub issue: https://github.com/fatedier/frp/issues/2272

Originally assigned to: @fatedier on GitHub.

错误日志：

2021/03/02 04:16:59 [E] [proxy.go:793] [6f4ed237f1d7dc2d] [esxi_openwrt_msi_windows_openssh] connect to local service [192.168.2.7:22] error: dial tcp 192.168.2.7:22: connect: no route to host
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x85e37f]

goroutine 291652 [running]:
github.com/fatedier/frp/client/proxy.(*XTCPProxy).InWorkConn(0xc00008e400, 0xac3120, 0xc0001d20c0, 0xc0000a90e0)
        github.com/fatedier/frp/client/proxy/proxy.go:312 +0x37f
created by github.com/fatedier/frp/client/proxy.(*Wrapper).InWorkConn
        github.com/fatedier/frp/client/proxy/proxy_wrapper.go:232 +0x248

查询源码发现错误所在
78b8bb7bc6/client/proxy/proxy.go (L312)

	clientConn, err := net.DialUDP("udp", nil, raddr)
	defer clientConn.Close()

	err = msg.WriteMsg(clientConn, natHoleClientMsg)
	if err != nil {
		xl.Error("send natHoleClientMsg to server error: %v", err)
		return
	}

可能的解决办法，将defer语句移到错误处理代码之后

Originally created by @iikira on GitHub (Mar 3, 2021). Original GitHub issue: https://github.com/fatedier/frp/issues/2272 Originally assigned to: @fatedier on GitHub. 错误日志： ```log 2021/03/02 04:16:59 [E] [proxy.go:793] [6f4ed237f1d7dc2d] [esxi_openwrt_msi_windows_openssh] connect to local service [192.168.2.7:22] error: dial tcp 192.168.2.7:22: connect: no route to host panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x85e37f] goroutine 291652 [running]: github.com/fatedier/frp/client/proxy.(*XTCPProxy).InWorkConn(0xc00008e400, 0xac3120, 0xc0001d20c0, 0xc0000a90e0) github.com/fatedier/frp/client/proxy/proxy.go:312 +0x37f created by github.com/fatedier/frp/client/proxy.(*Wrapper).InWorkConn github.com/fatedier/frp/client/proxy/proxy_wrapper.go:232 +0x248 ``` 查询源码发现错误所在 https://github.com/fatedier/frp/blob/78b8bb7bc6936acae2da6de4eddb877a3fd1d910/client/proxy/proxy.go#L312 ```go clientConn, err := net.DialUDP("udp", nil, raddr) defer clientConn.Close() err = msg.WriteMsg(clientConn, natHoleClientMsg) if err != nil { xl.Error("send natHoleClientMsg to server error: %v", err) return } ``` 可能的解决办法，将defer语句移到错误处理代码之后