FATAL EXCEPTION: LeakCanary-Heap-Dump Failure during heap dump; check log output for details

[bywyu]

 FATAL EXCEPTION: LeakCanary-Heap-Dump
 java.lang.RuntimeException: Failure during heap dump; check log output for details
    at dalvik.system.VMDebug.dumpHprofData(Native Method)
    at dalvik.system.VMDebug.dumpHprofData(VMDebug.java:305)
    at android.os.Debug.dumpHprofData(Debug.java:948)
    at com.squareup.leakcanary.AndroidHeapDumper.dumpHeap(AndroidHeapDumper.java:69)
    at com.squareup.leakcanary.RefWatcher.ensureGone(RefWatcher.java:122)
    at com.squareup.leakcanary.RefWatcher$5.run(RefWatcher.java:103)
    at android.os.Handler.handleCallback(Handler.java:730)
    at android.os.Handler.dispatchMessage(Handler.java:92)
    at android.os.Looper.loop(Looper.java:137)
    at android.os.HandlerThread.run(HandlerThread.java:61)

[pyricau]

Failure during heap dump; check log output for details => if would be nice to provide that log output.

I'll also need the android api version.

But otherwise, this looks like we could catch RuntimeException instead of just IOException.

[bywyu]

sorry,i have check

dalvik/vm/native/dalvik_system_VMDebug.cpp file's Dalvik_dalvik_system_VMDebug_dumpHprofData mthod.
dalvik/vm/hprof/Hprof.cpp file's hprofDumpHeap method.

but i have no find log output.

android api version is 4.3.

could you catch RuntimeException instead of just IOException in latest version,thx.

[manijshrestha]

I am seeing this on 4.1.2 (Droid Razr) also.

[pyricau]

Need logs. Closing.

[Jedyny]

I am getting the same issue.

Phone: HUAWEI G525-U00
Android: 4.1.2

08-28 11:49:00.810  13035-13077/com.example.android.debug E/dalvikvm﹕ can't open /storage/sdcard0/Download/leakcanary/suspected_leak_heapdump.hprof: Permission denied
08-28 11:49:00.830  13035-13077/com.example.android.debug W/dalvikvm﹕ threadid=24: thread exiting with uncaught exception (group=0x41ada438)
08-28 11:49:00.830  13035-13077/com.example.android.debug E/ACRA﹕ ACRA caught a RuntimeException for com.example.android.debug
    java.lang.RuntimeException: Failure during heap dump; check log output for details
            at dalvik.system.VMDebug.dumpHprofData(Native Method)
            at dalvik.system.VMDebug.dumpHprofData(VMDebug.java:302)
            at android.os.Debug.dumpHprofData(Debug.java:885)
            at com.squareup.leakcanary.AndroidHeapDumper.dumpHeap(AndroidHeapDumper.java:69)
            at com.squareup.leakcanary.RefWatcher.ensureGone(RefWatcher.java:122)
            at com.squareup.leakcanary.RefWatcher$5.run(RefWatcher.java:103)
            at android.os.Handler.handleCallback(Handler.java:615)
            at android.os.Handler.dispatchMessage(Handler.java:92)
            at android.os.Looper.loop(Looper.java:137)
            at android.os.HandlerThread.run(HandlerThread.java:60)

Apparently the file where the dump should be stored cannot be opened, but leakcanary does not fail gracefully then.

[parahall]

Guys
happens also on 4.0.4:

09-02 15:13:26.623 4756-4776/com.gettaxi.dbx.android I/dalvikvm﹕ hprof: dumping heap strings to "/mnt/sdcard/Download/leakcanary/suspected_leak_heapdump.hprof".
09-02 15:13:26.742 4756-4776/com.gettaxi.dbx.android E/dalvikvm﹕ can't open /mnt/sdcard/Download/leakcanary/suspected_leak_heapdump.hprof: Permission denied
09-02 15:13:26.747 4756-4877/com.gettaxi.dbx.android D/NativeCrypto﹕ Returned from SSL_Read() with result 289, error code 0 ssl=0xea5820, appData=0x1064a70
09-02 15:13:26.758 4756-4776/com.gettaxi.dbx.android W/dalvikvm﹕ threadid=12: thread exiting with uncaught exception (group=0x40c9d258)
09-02 15:13:26.769 4756-4776/com.gettaxi.dbx.android E/AndroidRuntime﹕ FATAL EXCEPTION: LeakCanary-Heap-Dump
java.lang.RuntimeException: Failure during heap dump; check log output for details
at dalvik.system.VMDebug.dumpHprofData(Native Method)
at dalvik.system.VMDebug.dumpHprofData(VMDebug.java:302)
at android.os.Debug.dumpHprofData(Debug.java:885)
at com.squareup.leakcanary.AndroidHeapDumper.dumpHeap(AndroidHeapDumper.java:69)
at com.squareup.leakcanary.RefWatcher.ensureGone(RefWatcher.java:122)
at com.squareup.leakcanary.RefWatcher$5.run(RefWatcher.java:103)
at android.os.Handler.handleCallback(Handler.java:605)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.os.HandlerThread.run(HandlerThread.java:60)

[allenchankl]

Got the same issue and it caused by dumping the log to a partition which is not exists (/mnt/sdcard)

[Maragues]

I'm seeing the same issue on Nexus 4 running Android 4.0.4 (Genymotion), using leak canary 1.4-SNAPSHOT

dalvikvm: hprof: dumping heap strings to "/storage/emulated/0/Download/leakcanary/suspected_leak_heapdump.hprof".
E/dalvikvm: can't open /storage/emulated/0/Download/leakcanary/suspected_leak_heapdump.hprof: Permission denied

FATAL EXCEPTION: LeakCanary-Heap-Dump
         java.lang.RuntimeException: Failure during heap dump; check log output for details
         at dalvik.system.VMDebug.dumpHprofData(Native Method)
         at dalvik.system.VMDebug.dumpHprofData(VMDebug.java:296)
         at android.os.Debug.dumpHprofData(Debug.java:1132)
         at com.squareup.leakcanary.AndroidHeapDumper.dumpHeap(AndroidHeapDumper.java:69)
         at com.squareup.leakcanary.RefWatcher.ensureGone(RefWatcher.java:122)
         at com.squareup.leakcanary.RefWatcher$5.run(RefWatcher.java:103)
         at android.os.Handler.handleCallback(Handler.java:733)
         at android.os.Handler.dispatchMessage(Handler.java:95)
         at android.os.Looper.loop(Looper.java:136)
         at android.os.HandlerThread.run(HandlerThread.java:61)

The path /storage/emulated/0 does not exist

root@vbox86p:/storage/emulated # pwd
/storage/emulated
root@vbox86p:/storage/emulated # ls
legacy

inside legacy, I do see previous leaks

root@vbox86p:/storage/emulated # ls legacy/Download/leakcanary/detected_leaks/                                       
heap_dump_0.hprof
heap_dump_0.hprof.result
...

In this app, I've only used 1.4-SNAPSHOT.

Let me know if I can help any further

[vkash]

Same exeption: E/dalvikvm: can't open /storage/emulated/0/Download/leakcanary/suspected_leak_heapdump.hprof: Permission denied
But folder exists /storage/emulated/0/Download/