IssueTracker

This is the first bug report I've had to file, so apologies if it's in the wrong place.

The google play SDK console suggests that we've been seeing a large number of crashes attributed to the PowerManager.addThermalStatusListener method. The underlying cause is as follows:

• We create a WebView
• WebView makes native request to addThermalStatusListener
• ConcurrentModificationException gets thrown because mListenerMap is not thread-safe - see creation of non-thread-safe collection and unsynchronized access

Incidentally, although this method was only introduced in API 29 (11) the version in API 28 (10) does have some synchronization around accessing this map

We wrap the creation of the WebView in a try/catch but because it's a native exception we don't get to catch it. As a result we have very little control over this crash.

I believe that this hasn't always been an issue, but a relatively recent change in the Chromium project started registering a listener to the PowerManager

It's also not just us seeing this crash too - see here from similar ticket affecting play ads.

Any thoughts/suggestions would be greatly appreciated.

Fatal Exception: org.chromium.base.JniAndroid$UncaughtExceptionException: Native stack trace:
#00 pc 0x0000000003e8226f /data/app/~~-ja5jhRo4kb4D5H61zVY9A==/com.google.android.trichromelibrary_631211833-F6tvFEzV9ClCYMKg8o5AEg==/base.apk (offset 0x8dc000)
#01 pc 0x0000000002cf7f53 /data/app/~~-ja5jhRo4kb4D5H61zVY9A==/com.google.android.trichromelibrary_631211833-F6tvFEzV9ClCYMKg8o5AEg==/base.apk (offset 0x8dc000)
#02 pc 0x0000000002cf8df7 /data/app/~~-ja5jhRo4kb4D5H61zVY9A==/com.google.android.trichromelibrary_631211833-F6tvFEzV9ClCYMKg8o5AEg==/base.apk (offset 0x8dc000)
#03 pc 0x0000000003d12a37 /data/app/~~-ja5jhRo4kb4D5H61zVY9A==/com.google.android.trichromelibrary_631211833-F6tvFEzV9ClCYMKg8o5AEg==/base.apk (offset 0x8dc000)
#04 pc 0x0000000002c635a7 /data/app/~~-ja5jhRo4kb4D5H61zVY9A==/com.google.android.trichromelibrary_631211833-F6tvFEzV9ClCYMKg8o5AEg==/base.apk (offset 0x8dc000)
#05 pc 0x0000000002ce973b /data/app/~~-ja5jhRo4kb4D5H61zVY9A==/com.google.android.trichromelibrary_631211833-F6tvFEzV9ClCYMKg8o5AEg==/base.apk (offset 0x8dc000)
#06 pc 0x0000000002cbaafb /data/app/~~-ja5jhRo4kb4D5H61zVY9A==/com.google.android.trichromelibrary_631211833-F6tvFEzV9ClCYMKg8o5AEg==/base.apk (offset 0x8dc000)
#07 pc 0x0000000002cba63b /data/app/~~-ja5jhRo4kb4D5H61zVY9A==/com.google.android.trichromelibrary_631211833-F6tvFEzV9ClCYMKg8o5AEg==/base.apk (offset 0x8dc000)

       at org.chromium.base.JniAndroid.handleException(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:21)
       at J.N.M1Y_XVCN(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833)
       at org.chromium.content.browser.BrowserStartupControllerImpl.d(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:110)
       at WV.h5.run(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:180)
       at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:487)
       at java.util.concurrent.FutureTask.run(FutureTask.java:264)
       at org.chromium.base.task.PostTask.d(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:11)
       at org.chromium.android_webview.AwBrowserProcess.j(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:32)
       at com.android.webview.chromium.E.d(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:188)
       at com.android.webview.chromium.E.b(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:42)
       at com.android.webview.chromium.E.f(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:4)
       at com.android.webview.chromium.WebViewChromiumFactoryProvider.l(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:8)
       at com.android.webview.chromium.WebViewChromium.init(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:97)
       at android.webkit.WebView.<init>(WebView.java:443)
       at android.webkit.WebView.<init>(WebView.java:363)
       at android.webkit.WebView.<init>(WebView.java:345)
       at android.webkit.WebView.<init>(WebView.java:332)
       at android.webkit.WebView.<init>(WebView.java:322)
       at com.tealium.tagmanagementdispatcher.d.invoke(SourceFile:1)
       at com.tealium.tagmanagementdispatcher.e$b.invokeSuspend(SourceFile:47)
       at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
       at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:104)
       at android.os.Handler.handleCallback(Handler.java:942)
       at android.os.Handler.dispatchMessage(Handler.java:99)
       at android.os.Looper.loopOnce(Looper.java:211)
       at android.os.Looper.loop(Looper.java:300)
       at android.app.ActivityThread.main(ActivityThread.java:8410)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:559)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:954)
Caused by java.util.ConcurrentModificationException:
       at android.util.ArrayMap.put(ArrayMap.java:623)
       at android.os.PowerManager.addThermalStatusListener(PowerManager.java:2471)
       at android.os.PowerManager.addThermalStatusListener(PowerManager.java:2443)
       at org.chromium.base.PowerMonitor.a(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:88)
       at org.chromium.base.PowerMonitor.isBatteryPower(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:5)
       at J.N.M1Y_XVCN(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833)
       at org.chromium.content.browser.BrowserStartupControllerImpl.d(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:110)
       at WV.h5.run(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:180)
       at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:487)
       at java.util.concurrent.FutureTask.run(FutureTask.java:264)
       at org.chromium.base.task.PostTask.d(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:11)
       at org.chromium.android_webview.AwBrowserProcess.j(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:32)
       at com.android.webview.chromium.E.d(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:188)
       at com.android.webview.chromium.E.b(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:42)
       at com.android.webview.chromium.E.f(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:4)
       at com.android.webview.chromium.WebViewChromiumFactoryProvider.l(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:8)
       at com.android.webview.chromium.WebViewChromium.init(chromium-TrichromeWebViewGoogle6432.aab-stable-631211833:97)
       at android.webkit.WebView.<init>(WebView.java:443)
       at android.webkit.WebView.<init>(WebView.java:363)
       at android.webkit.WebView.<init>(WebView.java:345)
       at android.webkit.WebView.<init>(WebView.java:332)
       at android.webkit.WebView.<init>(WebView.java:322)
       at com.tealium.tagmanagementdispatcher.d.invoke(SourceFile:1)
       at com.tealium.tagmanagementdispatcher.e$b.invokeSuspend(SourceFile:47)
       at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
       at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:104)
       at android.os.Handler.handleCallback(Handler.java:942)
       at android.os.Handler.dispatchMessage(Handler.java:99)
       at android.os.Looper.loopOnce(Looper.java:211)
       at android.os.Looper.loop(Looper.java:300)
       at android.app.ActivityThread.main(ActivityThread.java:8410)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:559)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:954)