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Issue metadata

Status: Duplicate
Merged: issue 857459
Owner: ----
Closed: Sep 6
Components:
EstimatedDays: ----
NextAction: ----
OS: Android
Pri: 2
Type: Bug



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ANR on nativeOnVSync

Reported by car...@instantbits.com, Sep 6

Issue description


Device name: Appears to happen on mostly Moto phones but others listed
Android version: 7, 7.1, 8
WebView version (from system settings -> Apps -> Android System WebView): Don't know
Application: Web Video Caster
Application version: all

URLs (if applicable): Don't know

I don't know how to reproduce this, it has never happened to me. I'm guessing there isn't anything you can do with just this ANR report but if you could please give me some pointers as to how I can go about getting more information or getting this fixed, that would be very helpful. This is right now my most common ANR. 

Here is the stack trace and I'm attaching screenshots of everything I get on the dev console. I've never reproduced it myself. 

"main" prio=5 tid=1 Native
  | group="main" sCount=1 dsCount=0 obj=0x74c6c598 self=0xacf04400
  | sysTid=7116 nice=-4 cgrp=default sched=0/0 handle=0xafd94534
  | state=S schedstat=( 0 0 0 ) utm=1409 stm=260 core=0 HZ=100
  | stack=0xbe09d000-0xbe09f000 stackSize=8MB
  | held mutexes=
  #00  pc 00000000000177ac  /system/lib/libc.so (syscall+28)
  #01  pc 00000000000471dd  /system/lib/libc.so (_ZL24__pthread_cond_timedwaitP23pthread_cond_internal_tP15pthread_mutex_tbPK8timespec+102)
  #02  pc 0000000000e47793  /data/app/com.android.chrome-2/base.apk (???)
  at org.chromium.ui.base.WindowAndroid.nativeOnVSync (Native method)
  at org.chromium.ui.base.WindowAndroid.a (SourceFile:142)
  at bKj.doFrame (SourceFile:37)
  at android.view.Choreographer$CallbackRecord.run (Choreographer.java:869)
  at android.view.Choreographer.doCallbacks (Choreographer.java:683)
  at android.view.Choreographer.doFrame (Choreographer.java:616)
  at android.view.Choreographer$FrameDisplayEventReceiver.run (Choreographer.java:857)
  at android.os.Handler.handleCallback (Handler.java:751)
  at android.os.Handler.dispatchMessage (Handler.java:95)
  at android.os.Looper.loop (Looper.java:154)
  at android.app.ActivityThread.main (ActivityThread.java:6316)
  at java.lang.reflect.Method.invoke! (Native method)
  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:872)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:762)
 
Screenshot from 2018-09-06 09-39-05.png
167 KB View Download
Screenshot from 2018-09-06 09-37-33.png
254 KB View Download
Mergedinto: 857459
Status: Duplicate (was: Unconfirmed)
Like I said in  crbug.com/857459 . The ANR with only a stack in webview is not actionable. We really do need semi-reliable steps to reproduce the ANR.

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