我在应用程序午餐时遇到异常，但没有崩溃。设备内核版本3.0.13
为什么我会收到此异常？我在谷歌搜索异常。但我找不到任何答案。 LOG ::
09-15 17:23:03.504: E/KeyguardUpdateMonitor(236): Object tried to add another INFO callback
09-15 17:23:03.543: E/AudioYusuHardware(103): setParameters still have param.size() = 1
09-15 17:23:03.556: E/WifiStateMachine(236): set suspend optimizations failed!
09-15 17:23:07.368: E/ActivityManager(236): mtprof entry can not found!
09-15 17:23:07.368: E/ActivityManager(236): java.io.FileNotFoundException: /proc/mtprof/status: open failed: ENOENT (No such file or directory)
09-15 17:23:07.368: E/ActivityManager(236): at libcore.io.IoBridge.open(IoBridge.java:448)
09-15 17:23:07.368: E/ActivityManager(236): at java.io.FileInputStream.<init>(FileInputStream.java:78)
09-15 17:23:07.368: E/ActivityManager(236): at java.io.FileInputStream.<init>(FileInputStream.java:105)
09-15 17:23:07.368: E/ActivityManager(236): at com.android.server.am.ActivityRecord.mtProf(ActivityRecord.java:852)
09-15 17:23:07.368: E/ActivityManager(236): at com.android.server.am.ActivityRecord.windowsDrawn(ActivityRecord.java:653)
09-15 17:23:07.368: E/ActivityManager(236): at com.android.server.am.ActivityRecord$Token.windowsDrawn(ActivityRecord.java:225)
09-15 17:23:07.368: E/ActivityManager(236): at com.android.server.wm.WindowManagerService$H.handleMessage(WindowManagerService.java:7054)
09-15 17:23:07.368: E/ActivityManager(236): at android.os.Handler.dispatchMessage(Handler.java:99)
09-15 17:23:07.368: E/ActivityManager(236): at android.os.Looper.loop(Looper.java:154)
09-15 17:23:07.368: E/ActivityManager(236): at com.android.server.wm.WindowManagerService$WMThread.run(WindowManagerService.java:756)
09-15 17:23:07.368: E/ActivityManager(236): Caused by: libcore.io.ErrnoException: open failed: ENOENT (No such file or directory)
09-15 17:23:07.368: E/ActivityManager(236): at libcore.io.Posix.open(Native Method)
09-15 17:23:07.368: E/ActivityManager(236): at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110)
09-15 17:23:07.368: E/ActivityManager(236): at libcore.io.IoBridge.open(IoBridge.java:432)
09-15 17:23:07.368: E/ActivityManager(236): ... 9 more