# Bug Report: ui freeze when attaching to android app **URL:** \ **Category:** Support\ **Created:** [January 28, 2025, 8:26am UTC](https://community.hex-rays.com/t/bug-report-ui-freeze-when-attaching-to-android-app/105 "2025-01-28T08:26:36Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![Uncle](https://avatars.discourse-cdn.com/v4/letter/u/e5b9ba/32.png) [@Uncle](https://community.hex-rays.com/u/Uncle)\ **Post date:** [January 28, 2025, 8:26am UTC](https://community.hex-rays.com/t/bug-report-ui-freeze-when-attaching-to-android-app/105/1 "2025-01-28T08:26:37Z")
In previous versions of IDA, I could start the Android server, launch the Android app, and attach directly from IDA without loading any .so file or IDB. The process was responsive, and I could begin debugging immediately. However, with IDA 9.0 SP1, if I try to attach directly from IDA without first loading a .so file or IDB, the entire UI freezes and becomes unresponsive. On the other hand, if I load the .so file into IDA before attaching, it works correctly. ---
**Author:** ![igor](https://sea2.discourse-cdn.com/flex002/user_avatar/community.hex-rays.com/igor/32/35_2.png) [@igor](https://community.hex-rays.com/u/igor)\ **Post date:** [January 28, 2025, 4:10pm UTC](https://community.hex-rays.com/t/bug-report-ui-freeze-when-attaching-to-android-app/105/2 "2025-01-28T16:10:54Z")
Do you remember what version you used previously? Also, do you have source-level debugging enabled (Debugger \> Use source-level debugging)? ---
**Author:** ![Uncle](https://avatars.discourse-cdn.com/v4/letter/u/e5b9ba/32.png) [@Uncle](https://community.hex-rays.com/u/Uncle)\ **Post date:** [January 28, 2025, 4:17pm UTC](https://community.hex-rays.com/t/bug-report-ui-freeze-when-attaching-to-android-app/105/3 "2025-01-28T16:17:23Z")
previously i tested with 7.7 and 8.3. debugger i am using these options: ![image](https://us1.discourse-cdn.com/flex002/uploads/rays_hex/original/1X/745a839a198d3c56e0d644c8ae18ff36b334f55d.png) then after attaching and selecting the process ui freezes like with this as last message: ![image](https://us1.discourse-cdn.com/flex002/uploads/rays_hex/original/1X/2779fc51f5fccbfa38e9c752896d065cb0c584b1.png) ---
**Author:** ![igor](https://sea2.discourse-cdn.com/flex002/user_avatar/community.hex-rays.com/igor/32/35_2.png) [@igor](https://community.hex-rays.com/u/igor)\ **Post date:** [January 28, 2025, 4:32pm UTC](https://community.hex-rays.com/t/bug-report-ui-freeze-when-attaching-to-android-app/105/4 "2025-01-28T16:32:56Z")
Please try this on “good” and “bad” IDA versions: `ida.exe -z10000 -LC:\temp\idadbg.log` (use a writable path for the log and different filenames for each run) Then compare what’s different in 9.0 compared to the previous version. Hopefully it will give some clues. ---
**Author:** ![Uncle](https://avatars.discourse-cdn.com/v4/letter/u/e5b9ba/32.png) [@Uncle](https://community.hex-rays.com/u/Uncle)\ **Post date:** [January 28, 2025, 6:27pm UTC](https://community.hex-rays.com/t/bug-report-ui-freeze-when-attaching-to-android-app/105/5 "2025-01-28T18:27:13Z")
ida 8 ```auto Caching 'Choose process to attach to'... ok process pid/tid: 904 INTERP: /apex/com.android.runtime/bin/linker64, SONAME: /system/bin/linker64 72E7F1C000: new dll /apex/com.android.runtime/bin/linker64 (soname=/system/bin/linker64) Build ID 'bacf9941030f330f49c494fe0df1f09b' of '/apex/com.android.runtime/bin/linker64' 72E7F698F0: added shlib bpt (rtld_db_dlactivity) Build ID '6c62557be5d4fc86476bf109a2f9cd20' of '/system/bin/app_process64' 70E55000: new dll /apex/com.android.art/javalib/arm64/boot.oat (soname=boot.oat) .. DBG: PTRACE_O_TRACECLONE ability detected, will be used in debugging multi-threaded program DBG: collect threads DBG: 0 found 904 thread DBG: 0 found 940 thread ... Assuming __fastcall calling convention by default E7F1B000: loaded [vdso] E68A8000: loaded /system/system_ext/lib64/vendor.qti.hardware.audiohalext@1.0.so E684D000: loaded /system/lib64/libpowermanager.so ... 70E55000: loaded /apex/com.android.art/javalib/arm64/boot.oat E7F1C000: loaded /apex/com.android.runtime/bin/linker64 RNG:FF00000D: create_range 12C00000..32C00000 RNG:FF00000D: create_range 70A15000..70CA4000 ... RNG:FF00000D: del_range 8F8000 delcmt 1 Unloading IDP module C:\Program Files\IDA Pro 8.3\procs\arm.dll... ``` ida 9 ```auto process pid/tid: 30289 INTERP: /apex/com.android.runtime/bin/linker64, SONAME: /system/bin/linker64 72E7F1C000: new dll /apex/com.android.runtime/bin/linker64 (soname=/system/bin/linker64) Build ID 'bacf9941030f330f49c494fe0df1f09b' of '/apex/com.android.runtime/bin/linker64' 72E7F698F0: added shlib bpt (rtld_db_dlactivity) Build ID '6c62557be5d4fc86476bf109a2f9cd20' of '/system/bin/app_process64' ... DBG: PTRACE_O_TRACECLONE ability detected, will be used in debugging multi-threaded program DBG: collect threads DBG: 0 found 30289 thread ... DBG: 1 found 30809 thread DBG: 1 found 30810 thread 72E7F1B000: loaded [vdso] 72E68A8000: loaded /system/system_ext/lib64/vendor.qti.hardware.audiohalext@1.0.so 72E684D000: loaded /system/lib64/libpowermanager.so .. 72E7F1C000: loaded /apex/com.android.runtime/bin/linker64 Debugger: attached to process /system/bin/app_process64 (pid=30289) Build ID '96a2ad2581099975b8c7bb4ab40fb39a7086a166' of '/apex/com.android.art/javalib/arm64/boot.oat' ... Build ID '05439b3fd79c7af99f197179ad59f15e' of '/system/lib64/libpowermanager.so' Build ID '03157a4d5504abbd915c9e9e8bedc511' of '/system/system_ext/lib64/vendor.qti.hardware.audiohalext@1.0.so' Hex-Rays Decompiler plugin has been loaded (v9.0.0.241217) The hotkeys are F5: decompile, Ctrl-F5: decompile all. Please check the Edit/Plugins menu for more information. Hex-rays version 9.0.0.241217 has been detected, gooMBA plugin ready to use dbg_bin_search 12C00000..32C00000 ``` ida 9 seems to get stuck there and the line about attaching to app process seems strange, unless that is intended behavior, as I was attaching to another process. ---
**Author:** ![igor](https://sea2.discourse-cdn.com/flex002/user_avatar/community.hex-rays.com/igor/32/35_2.png) [@igor](https://community.hex-rays.com/u/igor)\ **Post date:** [January 30, 2025, 10:12pm UTC](https://community.hex-rays.com/t/bug-report-ui-freeze-when-attaching-to-android-app/105/6 "2025-01-30T22:12:29Z")
Thanks! It is supposed to be fixed, but we used to have an issue in the rust plugin which was triggering an unintended search during debugging and I wonder if it reappeared in different circumstances. Can you try moving rust.dll out of the plugins folder temporarily and see if it fixes the problem? ---
**Author:** ![Uncle](https://avatars.discourse-cdn.com/v4/letter/u/e5b9ba/32.png) [@Uncle](https://community.hex-rays.com/u/Uncle)\ **Post date:** [January 31, 2025, 10:44am UTC](https://community.hex-rays.com/t/bug-report-ui-freeze-when-attaching-to-android-app/105/7 "2025-01-31T10:44:45Z")
Thanks for the prompt support, I am happy to confirm removing rust.dll fixes the issue. ---
**Author:** ![igor](https://sea2.discourse-cdn.com/flex002/user_avatar/community.hex-rays.com/igor/32/35_2.png) [@igor](https://community.hex-rays.com/u/igor)\ **Post date:** [February 27, 2025, 3:39pm UTC](https://community.hex-rays.com/t/bug-report-ui-freeze-when-attaching-to-android-app/105/8 "2025-02-27T15:39:44Z")
This issue is fixed in IDA 9.1. BTW, it was not limited to Android but could happen with any remote debugger. ---
**Author:** ![Uncle](https://avatars.discourse-cdn.com/v4/letter/u/e5b9ba/32.png) [@Uncle](https://community.hex-rays.com/u/Uncle)\ **Post date:** [February 27, 2025, 7:46pm UTC](https://community.hex-rays.com/t/bug-report-ui-freeze-when-attaching-to-android-app/105/9 "2025-02-27T19:46:42Z")
when can we expect ida 9.1 to be available ? thanks! ---
**Author:** ![igor](https://sea2.discourse-cdn.com/flex002/user_avatar/community.hex-rays.com/igor/32/35_2.png) [@igor](https://community.hex-rays.com/u/igor)\ **Post date:** [February 28, 2025, 11:29pm UTC](https://community.hex-rays.com/t/bug-report-ui-freeze-when-attaching-to-android-app/105/10 "2025-02-28T23:29:53Z")
It has been released.