Interceptor.replace for dlopen bug

[SeeFlowerX]

• jnitrace-engine/lib/engine.ts

  Line 147 in 9e87351

  Interceptor.replace(dlopen, new NativeCallback((filename: NativePointer, mode: number): NativeReturnValue => {

replace for dlopen will cause some bug like "Waiting for a blocking GC ProfileSaver"

modifiy to attach implementation can solve this problem, but I am not sure will it cause other bug...

patch code

video proof

[SeeFlowerX]

"Waiting for a blocking GC ProfileSaver" cause 100% CPU usage, then APP crash

[chame1eon]

Hi,

Thanks very much for showing me this issue. I wasn't aware using the Interceptor.replace was causing issues with "GC ProfileSaver". The reason I used Interceptor.replace instead of Interceptorattach is due to issues on Android > 7 hooking dlopen (from this issue on Frida) but that may be fixed now.

Have you tested your change on a device newer than Android 7? If the change works on those newer devices I am very happy to incorporate the changes.

Thanks

[SeeFlowerX]

I test on Pixel 4 Android 11.

not sure whether this problem has been solved, I suggest add a option to set by user for better compatibility.

• Frida on android 8.0 Oreo frida/frida#394
• dlopen hook failed in nexus6p with Android8.0 frida/frida#448

[chame1eon]

Hi,

Sorry for taking so long to get back to you on this. Can I check why you closed the issue? I was going to say your suggestion sounded like a good one so I was going to look to implement it. Before I do that I want to make sure you are still having the same problems.

Thanks

[haikejishu]

I have faced the same problem.
Buf when I modifiy to attach implementation . That solve this problem.

frida 16.0.11
Redmi K30 Android10
jnitrace 3.3.0

chame1eon/jnitrace#34