RK3568 Android11系统重启会导致偶发性的webview页面出不来

49960

日志报如下错误：

07-19 05:46:31.031   885   885 D Zygote  : Forked child process 2108
07-19 05:46:31.032  2108  2108 F webview_zygote: jni_internal.cc:729] JNI FatalError called: (zygote) Failed open(/sys/kernel/debug/tracing/trace_marker, 1): Permission denied
07-19 05:46:31.036   527   554 I ActivityManager: Start proc 2108:com.android.webview:sandboxed_process0:org.chromium.content.app.SandboxedProcessService0:0/u0i2 for  {com.skywellcorp.nanrui/org.chromium.content.app.SandboxedProcessService0:0}
07-19 05:46:31.059  2074  2119 W chromium: [WARNING:dns_config_service_posix.cc(341)] Failed to read DnsConfig.
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655] Runtime aborting...
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655] Dumping all threads without mutator lock held
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655] All threads:
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655] DALVIK THREADS (1):
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655] "main" prio=5 tid=1 Runnable
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   | group="" sCount=0 dsCount=0 flags=0 obj=0x72553d98 self=0xe3a41c10
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   | sysTid=885 nice=0 cgrp=default sched=0/0 handle=0xf0d49470
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   | state=? schedstat=( 0 0 0 ) utm=0 stm=0 core=0 HZ=100
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   | stack=0xff31a000-0xff31c000 stackSize=8192KB
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   | held mutexes= "abort lock" "mutator lock"(shared held)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   native: (backtrace::Unwind failed for thread 885: Thread doesn't exist)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   at com.android.internal.os.Zygote.nativeForkAndSpecialize(Native method)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   at com.android.internal.os.Zygote.forkAndSpecialize(Zygote.java:344)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   at com.android.internal.os.ZygoteConnection.processOneCommand(ZygoteConnection.java:257)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   at com.android.internal.os.ZygoteServer.runSelectLoop(ZygoteServer.java:546)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   at com.android.internal.os.ChildZygoteInit.runZygoteServer(ChildZygoteInit.java:125)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   at com.android.internal.os.WebViewZygoteInit.main(WebViewZygoteInit.java:147)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   at java.lang.reflect.Method.invoke(Native method)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655] 
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655] Aborting thread:
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655] "main" prio=5 tid=1 Native
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   | group="" sCount=0 dsCount=0 flags=0 obj=0x72553d98 self=0xe3a41c10
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   | sysTid=885 nice=0 cgrp=default sched=0/0 handle=0xf0d49470
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   | state=? schedstat=( 0 0 0 ) utm=0 stm=0 core=0 HZ=100
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   | stack=0xff31a000-0xff31c000 stackSize=8192KB
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   | held mutexes= "abort lock"
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   native: (backtrace::Unwind failed for thread 885: Thread doesn't exist)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   at com.android.internal.os.Zygote.nativeForkAndSpecialize(Native method)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   at com.android.internal.os.Zygote.forkAndSpecialize(Zygote.java:344)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   at com.android.internal.os.ZygoteConnection.processOneCommand(ZygoteConnection.java:257)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   at com.android.internal.os.ZygoteServer.runSelectLoop(ZygoteServer.java:546)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   at com.android.internal.os.ChildZygoteInit.runZygoteServer(ChildZygoteInit.java:125)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   at com.android.internal.os.WebViewZygoteInit.main(WebViewZygoteInit.java:147)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   at java.lang.reflect.Method.invoke(Native method)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655]   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
07-19 05:46:31.063  2108  2108 F webview_zygote: runtime.cc:655] 
07-19 05:46:31.063  2108  2108 I webview_zygote: type=1400 audit(0.0:395): avc: denied { write } for name="tombstoned_crash" dev="tmpfs" ino=12849 scontext=u:r:webview_zygote:s0

neardi

49960

在 Android 11 及以上版本的 userdebug 固件中，开机后有时会出现 WebView 相关功能失效，导致无法使用。

问题原因

在 userdebug 固件中，WebView zygote 初始化时会调用 trace 接口。由于 debug tracefs 挂载的时间有时晚于 WebView zygote 的初始化，导致 WebView 无法获取到必要的权限，初始化失败，进而导致所有使用 WebView 的应用无法加载网页。

解决方案

在 userdebug 固件的 early init 阶段挂载 debug tracefs。

RK3588 Android11 SDK代码修改如下：

diff --git a/device/rockchip/common/init.rockchip.rc b/device/rockchip/common/init.rockchip.rc
index 3a681f2860..fe390beee7 100755
--- a/device/rockchip/common/init.rockchip.rc
+++ b/device/rockchip/common/init.rockchip.rc
@@ -88,7 +88,7 @@ service iprenew_bt-pan /system/bin/dhcpcd -n
     oneshot
 
 # Only mount debugfs on userdebug build
-on property:ro.debuggable=1
+on early-init && property:ro.debuggable=1
     mount debugfs /sys/kernel/debug /sys/kernel/debug mode=755
     mount tracefs /sys/kernel/debug/tracing /sys/kernel/debug/tracing mode=755
     chown system root /sys/kernel/debug/tracing