openHeapGraph: EACCES (Permission denied)

[jepack]

Description

Dump failed and retry every 5s

Steps to Reproduce

Occur in every memory leak

It should dump correctly

Version Information

• LeakCanary version: v2.7
• Android OS version: 11
• Gradle version: 6.5

Additional Information

 Could not dump heap
    java.lang.RuntimeException: Couldn't dump heap; open("/storage/emulated/0/Download/leakcanary-***/2021-09-23_20-42-21_415.hprof") failed: Operation not permitted
        at dalvik.system.VMDebug.dumpHprofData(Native Method)
        at dalvik.system.VMDebug.dumpHprofData(VMDebug.java:384)
        at dalvik.system.VMDebug.dumpHprofData(VMDebug.java:361)
        at android.os.Debug.dumpHprofData(Debug.java:2016)
        at leakcanary.internal.AndroidHeapDumper.dumpHeap(AndroidHeapDumper.kt:67)
        at leakcanary.internal.HeapDumpTrigger.dumpHeap(HeapDumpTrigger.kt:165)
        at leakcanary.internal.HeapDumpTrigger.checkRetainedObjects(HeapDumpTrigger.kt:150)
        at leakcanary.internal.HeapDumpTrigger.access$checkRetainedObjects(HeapDumpTrigger.kt:29)
        at leakcanary.internal.HeapDumpTrigger$scheduleRetainedObjectCheck$1.run(HeapDumpTrigger.kt:334)
        at android.os.Handler.handleCallback(Handler.java:938)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:236)
        at android.os.HandlerThread.run(HandlerThread.java:67)

[pyricau]

Sounds like this was a known bug on the Android 11 beta (see #1801). Can you reproduce this on the Android 11 release? Emulator or device? Could you provide a repro project and details on the Android env that can repro this?

[david-allison]

Duplicated on stock Google Pixel 3a on Android 11, and also on API 30 Emulator.

The steps lead to a reproducible issue, but LeakCanary seems to work if AnkiDroid is in the foreground

https://github.com/ankidroid/Anki-Android/ @ commit 5fe60ed7d2e3baf0699b04dee7b757428bc57d25 on API 30 emulator

• Accept startup messages
• FAB - Add Note
• Enter "Hello" in "Front"
• In the app bar, select "Preview" (not the "Visual Editor" icon)
• Minimise, then Maximise AnkiDroid
• Back, Back + Confirm losing changes (you should be in the deck picker)
• Minimise AnkiDroid
• Click on the LeakCanary notification

Heap analysis failed - dump

java.io.FileNotFoundException: /storage/emulated/0/Download/leakcanary-com.ichi2.anki/2022-01-04_19-21-38_378.hprof: open failed: EACCES (Permission denied)
	at libcore.io.IoBridge.open(IoBridge.java:492)
	at java.io.FileInputStream.<init>(FileInputStream.java:160)
	at shark.FileSourceProvider.openStreamingSource(FileSourceProvider.kt:10)
	at shark.ConstantMemoryMetricsDualSourceProvider.openStreamingSource(ConstantMemoryMetricsDualSourceProvider.kt:48)
	at shark.HprofHeapGraph$Companion.openHeapGraph(HprofHeapGraph.kt:396)
	at shark.HprofHeapGraph$Companion.openHeapGraph$default(HprofHeapGraph.kt:394)
	at shark.HeapAnalyzer.analyze(HeapAnalyzer.kt:98)
	at leakcanary.internal.HeapAnalyzerService.analyzeHeap(HeapAnalyzerService.kt:87)
	at leakcanary.internal.HeapAnalyzerService.onHandleIntentInForeground(HeapAnalyzerService.kt:61)
	at leakcanary.internal.ForegroundService.onHandleIntent(ForegroundService.kt:55)
	at android.app.IntentService$ServiceHandler.handleMessage(IntentService.java:77)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loop(Looper.java:223)
	at android.os.HandlerThread.run(HandlerThread.java:67)
Caused by: android.system.ErrnoException: open failed: EACCES (Permission denied)
	at libcore.io.Linux.open(Native Method)
	at libcore.io.ForwardingOs.open(ForwardingOs.java:166)
	at libcore.io.BlockGuardOs.open(BlockGuardOs.java:254)
	at libcore.io.ForwardingOs.open(ForwardingOs.java:166)
	at android.app.ActivityThread$AndroidOs.open(ActivityThread.java:7542)
	at libcore.io.IoBridge.open(IoBridge.java:478)
	... 13 more

Build.VERSION.SDK_INT: 30
Build.MANUFACTURER: Google
LeakCanary version: 2.7
Analysis duration: 20 ms
Heap dump file path: /storage/emulated/0/Download/leakcanary-com.ichi2.anki/2022-01-04_19-21-38_378.hprof
Heap dump timestamp: 1641324101322

Our LeakCanary implementation is new. The commit that introduced it is: https://github.com/ankidroid/Anki-Android/commit/aedf30eb48a9a5578b89c08ea544661f82397bc8

[pyricau]

Thanks! Can you give me more details on the specific specs you set up for the API 30 emulator?

[david-allison]

AVD Details

Name: Pixel_3a_API_30

CPU/ABI: Google Play Intel Atom (x86)

Path: C:\Users\David\.android\avd\Pixel_3a_API_30.avd

Target: google_apis_playstore [Google Play] (API level 30)

Skin: pixel_3a

SD Card: 512 MB

fastboot.chosenSnapshotFile: 

runtime.network.speed: full

hw.accelerometer: yes

hw.device.name: pixel_3a

hw.lcd.width: 1080

hw.initialOrientation: Portrait

image.androidVersion.api: 30

tag.id: google_apis_playstore

hw.mainKeys: no

hw.camera.front: emulated

avd.ini.displayname: Pixel 3a API 30

hw.gpu.mode: auto

hw.ramSize: 1536

PlayStore.enabled: true

fastboot.forceColdBoot: no

hw.cpu.ncore: 2

hw.keyboard: yes

hw.sensors.proximity: yes

hw.dPad: no

hw.lcd.height: 2220

vm.heapSize: 256

skin.dynamic: yes

hw.device.manufacturer: Google

hw.gps: yes

hw.audioInput: yes

image.sysdir.1: system-images\android-30\google_apis_playstore\x86\

showDeviceFrame: yes

hw.camera.back: virtualscene

AvdId: Pixel_3a_API_30

hw.lcd.density: 440

hw.arc: false

hw.device.hash2: MD5:0e6953ebf01bdc6b33a2f54746629c50

fastboot.forceChosenSnapshotBoot: no

fastboot.forceFastBoot: yes

hw.trackBall: no

hw.battery: yes

hw.sdCard: yes

tag.display: Google Play

runtime.network.latency: none

disk.dataPartition.size: 6442450944

hw.sensors.orientation: yes

avd.ini.encoding: UTF-8

hw.gpu.enabled: yes

Thanks! Please let me know if you require more/alternate details

[pyricau]

Is this still happening with LeakCanary 2.11 ?

[pyricau]

Note: I didn't realize it at the time but the AnkiDroid error is entirely different from the original error in this issue.