X86_64 emulator support: ARTist / ARTistGui cannot instrument apps on the Nougat 7.1.1 x86_64 emulator images

[sweisgerber-dev]

ARTist / ARTistGui cannot instrument apps on the Nougat 7.1.1 x86_64 emulator images

Everything works find on the Nougat 7.1.1 x86 images.

Cause:

/data/dalvik-cache/x86_64/ is empty on those images, but dex2oat looks for data/dalvik-cache/x86_64/system@framework@boot.art and possible more files there. dex2oat also tries to copy them from /system/framework/x86_64/ but is not allowed to do so.

Things I tried:

• Populating them manually from /system/framework/x86_64/*
  • compilation failed anyways and the newly copied files got deleted from /data/dalvik-cache/x86_64/ again, when executing dex2oat.
• Forcing dex2oat to use --instruction-set=x86 leads to a working compilation/instrumentation process, but the instrumented oat-file won't get used afterwards when executing the APP.

Relevant Error Section

dex2artist: Could not create image space with image file '/system/framework/boot.art'. Attempting to fall back to imageless running. Error was: Unable to relocate image '/system/framework/boot.art' from '/system/framework/x86_64/boot.art' to '/data/dalvik-cache/x86_64/system@framework@boot.art': Only the zygote can create the global boot image.
dex2artist: Attempted image: /system/framework/boot.art
dex2artist: Dex file fallback disabled, cannot continue without image.
dex2artist: Failed to create runtime

Error Log (long)

ArtistProcExecutor: execute() SU [`export LD_LIBRARY_PATH=/data/app/saarland.cispa.artist.artistgui-2/lib/x86_64:/data/user/0/saarland.cispa.artist.artistgui/files/artist/lib/;/data/user/0/saarland.cispa.artist.artistgui/files/artist/dex2oat --oat-file=/data/app/de.heise.android.heiseonlineapp-1/oat/x86_64/base.odex --compiler-backend=Optimizing --compiler-filter=everything --generate-debug-info --compile-pic --dex-file=/data/app/de.heise.android.heiseonlineapp-1/base.apk --checksum-rewriting --dex-location=/data/app/de.heise.android.heiseonlineapp-1/base.apk --instruction-set=x86_64 --instruction-set-variant=atom --instruction-set-features=smp --instruction-set-features=default`]
ArtistProcExecutor: > execute() ProcessInfos: [Process[pid=24267, hasExited=false]]
ArtistProcExecutor: > execute() Waiting: de.heise.android.heiseonlineapp:dex2artist
art     : Dex location /system/framework/am.jar does not seem to include dex file. Allow oat file use. This is potentially dangerous.
tmp-mksh: type=1400 audit(0.0:979): avc: denied { execute } for name="dex2oat" dev="dm-0" ino=22057 scontext=u:r:init:s0 tcontext=u:object_r:app_data_file:s0:c512,c768 tclass=file permissive=1
tmp-mksh: type=1400 audit(0.0:980): avc: denied { execute_no_trans } for path="/data/data/saarland.cispa.artist.artistgui/files/artist/dex2oat" dev="dm-0" ino=22057 scontext=u:r:init:s0 tcontext=u:object_r:app_data_file:s0:c512,c768 tclass=file permissive=1
memtrack: Couldn't load memtrack module (No such file or directory)
android.os.Debug: failed to load memtrack module: -2
Radio-JNI: register_android_hardware_Radio DONE
dex2artist: /data/user/0/saarland.cispa.artist.artistgui/files/artist/dex2oat --oat-file=/data/app/de.heise.android.heiseonlineapp-1/oat/x86_64/base.odex --compiler-backend=Optimizing --compiler-filter=everything --generate-debug-info --compile-pic --dex-file=/data/app/de.heise.android.heiseonlineapp-1/base.apk --checksum-rewriting --dex-location=/data/app/de.heise.android.heiseonlineapp-1/base.apk
dex2artist: Could not create image space with image file '/system/framework/boot.art'. Attempting to fall back to imageless running. Error was: Unable to relocate image '/system/framework/boot.art' from '/system/framework/x86_64/boot.art' to '/data/dalvik-cache/x86_64/system@framework@boot.art': Only the zygote can create the global boot image.
dex2artist: Attempted image: /system/framework/boot.art
dex2artist: Dex file fallback disabled, cannot continue without image.
dex2artist: Failed to create runtime
dex2artist: dex2oat took 4.737ms (threads: 4) 
AndroidRuntime: Calling main entry com.android.commands.am.Am
AndroidRuntime: Shutting down VM
EGL_emulation: eglMakeCurrent: 0x766803437320: ver 2 0 (tinfo 0x76680340c340)
WindowManager: Attempted to remove non-existing token: android.os.Binder@db980df
AndroidRuntime: >>>>>> START com.android.internal.os.RuntimeInit uid 0 <<<<<<
AndroidRuntime: CheckJNI is ON
art     : Could not create image space with image file '/system/framework/boot.art'. Attempting to fall back to imageless running. Error was: Unable to relocate image '/system/framework/boot.art' from '/system/framework/x86_64/boot.art' to '/data/dalvik-cache/x86_64/system@framework@boot.art': Only the zygote can create the global boot image.
art     : Attempted image: /system/framework/boot.art
art     : Unexpected CPU variant for X86 using defaults: x86_64
ArtistProcExecutor: > execute() Waiting: de.heise.android.heiseonlineapp:dex2artist DONE

Affected Projects

• ArtistGui (configuring commandline / config parameter when calling dex2oat)
• ARTist (perhaps we need to adapt this as well)
• art (perhaps we need to adapt this as well)