Help/Support LLDB connection always stops

Ted2 · May 31, 2017

Hi!

I've been trying to connect LLDB to a application this whole day, but it doesnt seem to work...

Also Zimon tried helping me using TeamViewer, no succes.

The process always stops...

(lldb) process connect connect://192.168.x.x:23
Process 975 stopped
* thread #1: tid = 0x3f69, 0x0000000180d58fd8 libsystem_kernel.dylib`mach_msg_trap + 8, stop reason = signal SIGSTOP
    frame #0: 0x0000000180d58fd8 libsystem_kernel.dylib`mach_msg_trap + 8
libsystem_kernel.dylib`mach_msg_trap:
->  0x180d58fd8 <+8>: ret    

libsystem_kernel.dylib`mach_msg_overwrite_trap:
    0x180d58fdc <+0>: movn   x16, #0x1f
    0x180d58fe0 <+4>: svc    #0x80
    0x180d58fe4 <+8>: ret    
(lldb) c
Process 975 resuming
Process 975 exited with status = -1 (0xffffffff) lost connection

Why is this happening?

I've tried replacing the debugserver file that zimon used too, not working either..

I'm on iOS 9.3.3 on a iPhone 6s

Hope someone can help!

Thankyou in advance!

UnboundGodz · June 1, 2017

5 hours ago, Ted2 said:
Hi!

I've been trying to connect LLDB to a application this whole day, but it doesnt seem to work...

Also Zimon tried helping me using TeamViewer, no succes.

The process always stops...
(lldb) process connect connect://192.168.x.x:23
Process 975 stopped
* thread #1: tid = 0x3f69, 0x0000000180d58fd8 libsystem_kernel.dylib`mach_msg_trap + 8, stop reason = signal SIGSTOP
    frame #0: 0x0000000180d58fd8 libsystem_kernel.dylib`mach_msg_trap + 8
libsystem_kernel.dylib`mach_msg_trap:
->  0x180d58fd8 <+8>: ret    

libsystem_kernel.dylib`mach_msg_overwrite_trap:
    0x180d58fdc <+0>: movn   x16, #0x1f
    0x180d58fe0 <+4>: svc    #0x80
    0x180d58fe4 <+8>: ret    
(lldb) c
Process 975 resuming
Process 975 exited with status = -1 (0xffffffff) lost connection
Why is this happening?

I've tried replacing the debugserver file that zimon used too, not working either..

I'm on iOS 9.3.3 on a iPhone 6s

Hope someone can help!

Thankyou in advance!

Does the connection signal stop on other applications aswell?

Says its a signal error, might i suggest changing connection type aswell.

xiaov · June 1, 2017

1 - Ram of devices not enough.. close all App except the App you want to debug.

2 - Replaces the debugserver file from DIda's post (debugserver for ios9 ), not for ios8.

June 1, 2017

3 hours ago, xiaov said:

1 - Ram of devices not enough.. close all App except the App you want to debug.

2 - Replaces the debugserver file from DIda's post (debugserver for ios9 ), not for ios8.

Actually I sent him the iOS 9 one

And yeah, it's true that might be the case (RAM), he had a lot of processes running at the same time

xiaov · June 1, 2017

Just now, Zimon said:

Actually I sent him the iOS 9 one

And yeah, it's true that might be the case (RAM), he had a lot of processes running at the same time

ram GG

Ted2 · June 1, 2017

3 hours ago, UnboundGodz said:

Does the connection signal stop on other applications aswell?

Says its a signal error, might i suggest changing connection type aswell.

Yes on every app..

3 hours ago, xiaov said:

1 - Ram of devices not enough.. close all App except the App you want to debug.

2 - Replaces the debugserver file from DIda's post (debugserver for ios9 ), not for ios8.

Alright i'll try the first thing but second thing is done already

xiaov · June 1, 2017

9 minutes ago, Ted2 said:

Yes on every app..

Alright i'll try the first thing but second thing is done already

reboot before lldb is best choice..

but if your device too slow... i cant help ..Lol

Ted2 · June 1, 2017

Alright, I tried it again, rebooted first, closed all applications, still same problem.

Terminal Window 1:

iPhone-van-Joey:~ root# debugserver 192.168.***.***:23 --attach=FraggerFree
debugserver-@(#)PROGRAM:debugserver  PROJECT:debugserver-320.2.89
 for arm64.
Attaching to process FraggerFree...
Listening to port 23 for a connection from 192.168.***.***...
Waiting for debugger instructions for process 0.

Terminal window 2:

MacBook-Pro:~ Joey$ lldb
(lldb) process connect connect://192.168.***.***:23
Process 746 stopped
* thread #1: tid = 0x16b3, 0x2111f8a8 libsystem_kernel.dylib`mach_msg_trap + 20, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
    frame #0: 0x2111f8a8 libsystem_kernel.dylib`mach_msg_trap + 20
libsystem_kernel.dylib`mach_msg_trap:
->  0x2111f8a8 <+20>: pop    {r4, r5, r6, r8}
    0x2111f8ac <+24>: bx     lr

libsystem_kernel.dylib`mach_msg_overwrite_trap:
    0x2111f8b0 <+0>:  mov    r12, sp
    0x2111f8b4 <+4>:  push   {r4, r5, r6, r8}

I don't get the problem