fell in with : unexpectedly found nil while unwrapping an Optional value about nekit HOT 12 CLOSED

Sep 7 10:57:39 Guangjiande-iPhone ReportCrash[1160] : Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000001, 0x0000000100a66588
Triggered by Thread: 5
Sep 7 10:57:39 Guangjiande-iPhone ReportCrash[1160] : Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0:
0 libsystem_kernel.dylib 0x0000000181070fd8 0x181070000 + 4056
1 libsystem_kernel.dylib 0x0000000181070e54 0x181070000 + 3668
2 CoreFoundation 0x00000001814a8c60 0x1813c8000 + 920672
3 CoreFoundation 0x00000001814a6964 0x1813c8000 + 911716
4 CoreFoundation 0x00000001813d0c50 0x1813c8000 + 35920
5 Foundation 0x0000000181de0cfc 0x181dd4000 + 52476
6 Foundation 0x0000000181e36030 0x181dd4000 + 401456
7 libxpc.dylib 0x0000000181194c64 0x181184000 + 68708
8 libxpc.dylib 0x00000001811969dc 0x181184000 + 76252
9 Foundation 0x0000000181fb3d60 0x181dd4000 + 1965408
10 PlugInKit 0x00000001887fac48 0x1887ec000 + 60488
11 PlugInKit 0x00000001887fa8dc 0x1887ec000 + 59612
12 PlugInKit 0x00000001887fac6c 0x1887ec000 + 60524
13 libextension.dylib 0x0000000181dc6058 0x181db0000 + 90200
14 libdyld.dylib 0x0000000180f6e8b8 0x180f6c000 + 10424
Sep 7 10:57:39 Guangjiande-iPhone ReportCrash[1160] : Thread 1 name: Dispatch queue: cocoa.lumberjack
Thread 1:
0 libsystem_kernel.dylib 0x0000000181071014 0x181070000 + 4116
1 libdispatch.dylib 0x0000000180f4e8c4 0x180f3c000 + 75972
2 CocoaLumberjack 0x00000001004f3204 0x1004ec000 + 29188
3 CocoaLumberjack 0x00000001004f1ac4 0x1004ec000 + 23236
4 libdispatch.dylib 0x0000000180f3d4bc 0x180f3c000 + 5308
5 libdispatch.dylib 0x0000000180f3d47c 0x180f3c000 + 5244
6 libdispatch.dylib 0x0000000180f494c0 0x180f3c000 + 54464
7 libdispatch.dylib 0x0000000180f40f80 0x180f3c000 + 20352
8 libdispatch.dylib 0x0000000180f3d47c 0x180f3c000 + 5244
9 libdispatch.dylib 0x0000000180f4b914 0x180f3c000 + 63764
10 libdispatch.dylib 0x0000000180f4b0b0 0x180f3c000 + 61616
11 libsystem_pthread.dylib 0x0000000181155470 0x181154000 + 5232
12 libsystem_pthread.dylib 0x0000000181155020 0x181154000 + 4128
Sep 7 10:57:39 Guangjiande-iPhone ReportCrash[1160] : Thread 2 name: Dispatch queue: com.apple.libdispatch-manager
Thread 2:
0 libsystem_kernel.dylib 0x000000018108d4d8 0x181070000 + 120024
1 libdispatch.dylib 0x0000000180f507d8 0x180f3c000 + 83928
2 libdispatch.dylib 0x0000000180f3f648 0x180f3c000 + 13896
Sep 7 10:57:39 Guangjiande-iPhone ReportCrash[1160] : Thread 3:
0 libsystem_kernel.dylib 0x000000018108cb48 0x181070000 + 117576
1 libsystem_pthread.dylib 0x0000000181155530 0x181154000 + 5424
2 libsystem_pthread.dylib 0x0000000181155020 0x181154000 + 4128
Sep 7 10:57:39 Guangjiande-iPhone ReportCrash[1160] : Thread 4:
0 libsystem_kernel.dylib 0x000000018108cb48 0x181070000 + 117576
1 libsystem_pthread.dylib 0x0000000181155530 0x181154000 + 5424
2 libsystem_pthread.dylib 0x0000000181155020 0x181154000 + 4128
Sep 7 10:57:39 Guangjiande-iPhone ReportCrash[1160] : Thread 5 name: Dispatch queue: tun2socks.IPStackQueue
Thread 5 Crashed:
0 libswiftCore.dylib 0x0000000100a66588 0x100928000 + 1303944
1 NEKit 0x0000000100181814 0x100164000 + 120852
2 NEKit 0x0000000100181a2c 0x100164000 + 121388
3 tun2socks 0x000000010076706c 0x100760000 + 28780
4 lwip 0x000000010062242c 0x100618000 + 42028
5 lwip 0x000000010061f624 0x100618000 + 30244
6 tun2socks 0x0000000100767204 0x100760000 + 29188
7 libdispatch.dylib 0x0000000180f3d4bc 0x180f3c000 + 5308
8 libdispatch.dylib 0x0000000180f3d47c 0x180f3c000 + 5244
9 libdispatch.dylib 0x0000000180f494c0 0x180f3c000 + 54464
10 libdispatch.dylib 0x0000000180f40f80 0x180f3c000 + 20352
11 libdispatch.dylib 0x0000000180f3d47c 0x180f3c000 + 5244
12 libdispatch.dylib 0x0000000180f4b914 0x180f3c000 + 63764
13 libdispatch.dylib 0x0000000180f4b0b0 0x180f3c000 + 61616
14 libsystem_pthread.dylib 0x0000000181155470 0x181154000 + 5232
15 libsystem_pthread.dylib 0x0000000181155020 0x181154000 + 4128
Sep 7 10:57:39 Guangjiande-iPhone ReportCrash[1160] : Thread 6:
0 libsystem_kernel.dylib 0x000000018108cb48 0x181070000 + 117576
1 libsystem_pthread.dylib 0x0000000181155530 0x181154000 + 5424
2 libsystem_pthread.dylib 0x0000000181155020 0x181154000 + 4128
Sep 7 10:57:39 Guangjiande-iPhone ReportCrash[1160] : Thread 7:
0 libsystem_pthread.dylib 0x000000018115501c 0x181154000 + 4124
Sep 7 10:57:39 Guangjiande-iPhone ReportCrash[1160] : Thread 8:
0 libsystem_kernel.dylib 0x000000018108cb48 0x181070000 + 117576
1 libsystem_pthread.dylib 0x0000000181155530 0x181154000 + 5424
2 libsystem_pthread.dylib 0x0000000181155020 0x181154000 + 4128
Sep 7 10:57:39 Guangjiande-iPhone ReportCrash[1160] : Thread 5 crashed with ARM Thread State (64-bit):
x0: 0x0000000100f10a00 x1: 0x000000018114e8f4 x2: 0x0000000134d40440 x3: 0x0000000000000008
x4: 0x0000000000000000 x5: 0x0000000000000020 x6: 0x0000000000000000 x7: 0x0000000000000fa0
x8: 0x0000000100f10a08 x9: 0x0000000000001000 x10: 0x0000000134d44000 x11: 0x0000000000000fff
x12: 0x0000000134d40000 x13: 0x0000000000003fff x14: 0xffffffffffffc000 x15: 0x0000000000003fff
x16: 0x00000001810b8168 x17: 0x0000000100b28040 x18: 0x0000000000000000 x19: 0x0000000134d31f60
x20: 0x0000000134e3dc40 x21: 0x0000000134d31d30 x22: 0x0000000100227160 x23: 0x000000010076d8b0
x24: 0x0000000134d31ff0 x25: 0x00000001001819e4 x26: 0x0000000100628000 x27: 0x00000001006281f8
x28: 0x0000000100628000 fp: 0x000000016e246a90 lr: 0x0000000100a66588
sp: 0x000000016e246a80 pc: 0x0000000100a66588 cpsr: 0x20000000

from nekit.

This does not seems like from the latest NEKit.
Are you using the latest tun2socks library?

from nekit.

am I using tun2socks 0.3.0

from nekit.

Emm, try to use dSYM file to get a more detailed stack information.

2016年9月7日 +0800 17:20 sails [email protected]，写道：

am I using tun2socks 0.3.0

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from nekit.

I can't get crash file in PacketTunnel process:
Sep 12 10:47:06 Guangjiande-iPhone ReportCrash[3778] <Warning>: Report of type '109(109_PacketTunnel)' not saved because the limit of 25 logs has been reached Sep 12 10:47:06 Guangjiande-iPhone ReportCrash[3778] <Error>: Notice: This report is abbreviated for syslog inclusion because it could not be saved to disk. Symbolication may be possible by manually cleaning up and including the Binary Image section of a full report from this same device -- good luck! Sep 12 10:47:06 Guangjiande-iPhone ReportCrash[3778] <Error>: Process: PacketTunnel [3776] Path: /private/var/containers/Bundle/Application/31D2FE00-1DD5-4938-95A3-6E8D292B076F/NetKit.app/PlugIns/PacketTunnel.appex/PacketTunnel OS Version: iOS 9.3.5 (13G36) Sep 12 10:47:06 Guangjiande-iPhone ReportCrash[3778] <Error>: Exception Type: EXC_BREAKPOINT (SIGTRAP) Exception Codes: 0x0000000000000001, 0x0000000100a7e588 Triggered by Thread: 4 Sep 12 10:47:06 Guangjiande-iPhone ReportCrash[3778] <Error>: Thread 0 name: Dispatch queue: com.apple.main-thread

so i don't know slide address in arm64:

from nekit.

Well, I know there are some bugs in tun2socks, I just don't know where.
I have fixed some potential bugs, it helped, the crash reduced significantly.
I think there is something wrong in my modifications of lwip, but I do not know where and do not have time to look into it now.

So my recommendation is (as of now): if the crashing frequency is acceptable, then just ignore it, if not, then do not process IP packets.

from nekit.

I don't know How can I get detailed stack information，can you get me some advice

from nekit.

I think it is because lwip tries to dereference some nil pointer, because that is what happens when I test it. So I think there is something wrong in my modifications of lwip. If you want to, you can look at the modifications by searching tun2socks in the source code, everything changed should be commented with "tun2socks".

As of how to get a stack information, I do not know. I'm not an iOS developer or a macOS developer. But it seems like you need to clean up the existing logs first. Maybe by connecting to you macbook and use "Devices" to delete them.

from nekit.

This is my code, often problems occur, I hope useful to analyze the reasons for you

print("start setting\n")
        guard let ssAdapterFactory = ShadowsocksAdapterFactory(serverHost: address!, serverPort: port, encryptAlgorithm: encryptAlgorithm, password: password) else {
            NSLog("ssAdapterFactory is nil, address:%@, port:%d, encryptAlgorithm:%@, password:%@",
                  address!, port, encryptAlgorithm, password)
            completionHandler(startError)
            return
        }


        let allRule = AllRule(adapterFactory: ssAdapterFactory)

        // Create rule manager, rules will be matched in order.
        let manager = RuleManager(fromRules: [allRule], appendDirect: true)

        // Set this manager as the active manager
        RuleManager.currentManager = manager

        RawSocketFactory.TunnelProvider = self

        let networkSettings = NEPacketTunnelNetworkSettings(tunnelRemoteAddress: address!)


        let ipv4Settings = NEIPv4Settings(addresses: ["192.169.89.1"], subnetMasks: ["255.255.255.0"])
        ipv4Settings.includedRoutes = [NEIPv4Route.defaultRoute()]
        ipv4Settings.excludedRoutes = [
            NEIPv4Route(destinationAddress: "10.0.0.0", subnetMask: "255.0.0.0"),
            NEIPv4Route(destinationAddress: "100.64.0.0", subnetMask: "255.192.0.0"),
            NEIPv4Route(destinationAddress: "127.0.0.0", subnetMask: "255.0.0.0"),
            NEIPv4Route(destinationAddress: "169.254.0.0", subnetMask: "255.255.0.0"),
            NEIPv4Route(destinationAddress: "172.16.0.0", subnetMask: "255.240.0.0"),
            NEIPv4Route(destinationAddress: "192.168.0.0", subnetMask: "255.255.0.0"),
        ]
        networkSettings.IPv4Settings = ipv4Settings

        let proxySettings = NEProxySettings()
        proxySettings.HTTPEnabled = true
        proxySettings.HTTPServer = NEProxyServer(address: "127.0.0.1", port: proxyPort)
        proxySettings.HTTPSEnabled = true
        proxySettings.HTTPSServer = NEProxyServer(address: "127.0.0.1", port: proxyPort)
        proxySettings.excludeSimpleHostnames = true
        // This will match all domains
        proxySettings.matchDomains = [""]
        networkSettings.proxySettings = proxySettings




        // the 198.18.0.0/15 is reserved for benchmark.
        let DNSSettings = NEDNSSettings(servers: ["198.18.0.1"])
        DNSSettings.matchDomains = [""]
        DNSSettings.matchDomainsNoSearch = false
        networkSettings.DNSSettings = DNSSettings

        interface = TUNInterface(packetFlow: packetFlow)
        let fakeIPPool = IPv4Pool(start: IPv4Address(fromString: "172.169.1.0")!, end: IPv4Address(fromString: "172.169.255.0")!)
        let dnsServer = DNSServer(address: IPv4Address(fromString: "172.169.0.1")!, port: Port(port: 53), fakeIPPool: fakeIPPool)

        let resolver = UDPDNSResolver(address: IPv4Address(fromString: "114.114.114.114")!, port: Port(port: 53))
        dnsServer.registerResolver(resolver)
        interface?.registerStack(dnsServer)
        DNSServer.currentServer = dnsServer

        let udpStack = UDPDirectStack()
        interface?.registerStack(udpStack)

        let tcpStack = TCPStack.stack
        interface?.registerStack(tcpStack)

        setTunnelNetworkSettings(networkSettings) {
            error in
            guard error == nil else {
                NSLog("Encountered an error setting up the network: \(error)")
                completionHandler(error)
                return
            }

            NSLog("start proxy server")
            self.proxyServer = GCDHTTPProxyServer(address: IPv4Address(fromString: "127.0.0.1"), port: Port(port: UInt16(self.proxyPort)))
            try! self.proxyServer?.start()

            completionHandler(nil)

            NSLog("start interface")
            self.interface?.start()
        }

from nekit.

It seems alright, there is just something wrong in tun2socks.

from nekit.

@sails The problem you met was solved？

from nekit.

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

from nekit.