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Weird crash bug on Android 5.0 Lollipop, only when installed from Google Play Store

Discussion in 'Android' started by Sahara, Nov 12, 2014.

  1. Sahara

    Sahara

    Joined:
    Nov 11, 2014
    Posts:
    1
    Hi,

    I found a weird crash bug, help me find out the cause of it!

    On the following Java code called by Unity's AndroidJavaObject, somehow it crashes with SIGSEGV on Android 5.0 when just a NullPointerException is thrown. "a.toString" causes NullPointerException and the exception is always catched and NEVER crashes on Android 4.4 and older.

    Code (Java):
    1. // Called from Unity C# like: (new AndroidJavaObject("jp.co.cyberz.TestUnityException")).Call("test");
    2. public void test(){
    3.   try {
    4.     String a = null;
    5.     a.toString(); // CRASH!!
    6.   } catch (Exception e) {
    7.   }
    8. }
    (Uploaded the project at Dropbox)

    logcat:
    Crashes on the following conditions.
    • Installed from the Google Play Store(To check, uploaded at the store )
    • Unity 4.2.2 and older versions
    • Running on Android 5.0, not on Android 4.4 w/ ART runtime
    I know I can fix it by upgrading Unity version, but I cannot. I provide SDKs and must support the older versions.

    Do you have any idea about the cause, or does anybody encounter it?
    I cannot believe it crashes only when installed from the Google Play store...
     
    msintov likes this.
  2. msintov

    msintov

    Joined:
    Nov 13, 2014
    Posts:
    1
    We are having the exact same problem. I have a NullPointerException thrown from Java code within Unity 4.2 games, and they all crash, *only* when downloaded from the Google Play Store on Android 5.0. This did not happen on Android 4.*, and it doesn't happen when the apk is sideloaded via adb install, and it doesn't happen on Unity 4.3.

    In our case, the crashing code is:

    JSONObject myObject;
    String s = null
    try {
    myObject = new JSONObject(s); // <--- crash here
    }
    catch (Exception e) {
    }

    We have about 30+ games with this problem.

    I also posted a bug against Android here (many many thanks to Sahara for the sample):
    https://code.google.com/p/android/issues/detail?id=79288&thanks=79288&ts=1415920385
     
    Last edited: Nov 14, 2014
  3. Cenda

    Cenda

    Joined:
    Jun 3, 2010
    Posts:
    64
    I just updated my phone to Android 5 and it is crashing during start with:

    11-18 18:56:15.624 5289-5316/? E/qdutils﹕ FBIOGET_FSCREENINFO failed
    11-18 18:56:16.013 5289-5316/? A/libc﹕ heap corruption detected by dlfree
    11-18 18:56:16.013 5289-5316/? A/libc﹕ Fatal signal 6 (SIGABRT), code -6 in tid 5316 (UnityMain)
     
  4. klinakuf

    klinakuf

    Joined:
    Feb 5, 2014
    Posts:
    1
    Hello guys,

    I am having the same problem only on Android 5 L,

    Device model : LGE Nexus 5
    Device fingerprint: google/hammerhead/hammerhead:5.0/LRX21O/1570415:user/release-keys

    Caused by: java.lang.Error: signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 00000018
    Build fingerprint: 'google/hammerhead/hammerhead:5.0/LRX21O/1570415:user/release-keys'
    Revision: '11'
     
  5. BlackPanda

    BlackPanda

    Joined:
    Jan 24, 2014
    Posts:
    76
    Same here. In Nexus 4 on Android 5.0.0. Did you guys find a solution to this?? I'm using Unity 4.6.0f1.
     
  6. GamenamiGames

    GamenamiGames

    Joined:
    Sep 16, 2014
    Posts:
    7
    BlackPanda likes this.
  7. Claytonious

    Claytonious

    Joined:
    Feb 16, 2009
    Posts:
    737
    Did 4.6.1p2 fix this for any of you guys?
     
  8. BlackPanda

    BlackPanda

    Joined:
    Jan 24, 2014
    Posts:
    76
    I'll give update on that today itself. Btw, 4.6.0f1 has this bug too.
     
  9. thoorne

    thoorne

    Joined:
    Jul 22, 2012
    Posts:
    64
    I'm also getting random SIGSEGV errors. I'm using Unity 4.6.1p2. Process is just dying with no apparent reason and without any logs or stacktraces.
     
  10. spotavi

    spotavi

    Joined:
    Aug 30, 2014
    Posts:
    31
    The exact unity build that resolves this issues is 4.3.1 . Find it here : http://unity3d.com/unity/download/archive .

    We used this build to publish to play store and solve those crashes. ( Just a workaround to avoid those bad 1 star ratings :( )
     
  11. spotavi

    spotavi

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    Aug 30, 2014
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  12. thoorne

    thoorne

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    Jul 22, 2012
    Posts:
    64
    Sadly 4.3.1 doesn't include new GUI so it's not a deal for me.
     
    spotavi likes this.
  13. spotavi

    spotavi

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    Aug 30, 2014
    Posts:
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    Exactly !! Using the new unity ui and stuck with this bug :(
     
  14. BlackPanda

    BlackPanda

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    Jan 24, 2014
    Posts:
    76
    Same here. New ui. :confused: :( Can't go back.
     
    spotavi likes this.
  15. BlackPanda

    BlackPanda

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    Jan 24, 2014
    Posts:
    76
    4.6.1.p2 worked! Issue solved in Android 5! :)
     
  16. spotavi

    spotavi

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    Aug 30, 2014
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    Thanks for the update BlackPanda. Will install again and try it fresh !
     
  17. thoorne

    thoorne

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    Jul 22, 2012
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    64
  18. breaker2005

    breaker2005

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    Feb 22, 2013
    Posts:
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    Yes i came to this same conclusion. But it happens not only when app is downloaded from google play.
     
  19. jtbentley

    jtbentley

    Joined:
    Jun 30, 2009
    Posts:
    1,397
    We're also having issues with Unity 4.6.2 building and a crash on a Nexus 6 running android 5.0.1, about a split second after splash screen. It's working on other devices running older android though.
     
  20. thoorne

    thoorne

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    Jul 22, 2012
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    From my experience this issue was fixed in 4.6.3.
     
  21. jtbentley

    jtbentley

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    1,397
    Turns out for us it was an issue with a 3rd party plugin, the builds ran fine once disabled.
     
  22. MagicBen

    MagicBen

    Joined:
    May 21, 2014
    Posts:
    2
    Hello,

    any news on this subject?
    Is it really fixed in 4.6.3+?
     
  23. MagicBen

    MagicBen

    Joined:
    May 21, 2014
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    2
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