应用打系统签名后在android5.1上无法加载so 5C

我的应用 打了系统签名后在android5.1 的设备上报错提示没有权限加载so文件

但是不打系统签名就可以正常启动,希望哪位大神帮忙看看,错误日志如下:
10-20 10:14:36.918 4708-4708/? I/System.out: action Title!
10-20 10:14:36.918 4708-4708/? W/osas.mdc:school: type=1400 audit(0.0:9500): avc: denied { execute } for path="/data/data/com.invosas.mdc/qt-reserved-files/plugins/platforms/android/libqtforandroid.so" dev="mmcblk0p14" ino=132587 scontext=u:r:platform_app:s0 tcontext=u:object_r:app_data_file:s0 tclass=file permissive=0
10-20 10:14:36.937 4708-4708/? E/art: dlopen("/data/data/com.invosas.mdc/qt-reserved-files/plugins/platforms/android/libqtforandroid.so", RTLD_LAZY) failed: dlopen failed: couldn't map "/data/data/com.invosas.mdc/qt-reserved-files/plugins/platforms/android/libqtforandroid.so" segment 2: Permission denied
10-20 10:14:36.937 4708-4708/? W/System.err: java.lang.reflect.InvocationTargetException
10-20 10:14:36.938 4708-4708/? W/System.err: at java.lang.reflect.Method.invoke(Native Method)
10-20 10:14:36.938 4708-4708/? W/System.err: at java.lang.reflect.Method.invoke(Method.java:372)
10-20 10:14:36.938 4708-4708/? W/System.err: at org.qtproject.qt5.android.bindings.QtLoader.loadApplication(QtLoader.java:237)
10-20 10:14:36.938 4708-4708/? W/System.err: at org.qtproject.qt5.android.bindings.QtLoader.startApp(QtLoader.java:649)
10-20 10:14:36.938 4708-4708/? W/System.err: at org.qtproject.qt5.android.bindings.QtActivityLoader.onCreate(QtActivityLoader.java:183)
10-20 10:14:36.938 4708-4708/? W/System.err: at org.qtproject.qt5.android.bindings.QtActivity.onCreateHook(QtActivity.java:266)
10-20 10:14:36.938 4708-4708/? W/System.err: at org.qtproject.qt5.android.bindings.QtActivity.onCreate(QtActivity.java:273)
10-20 10:14:36.938 4708-4708/? W/System.err: at com.uuke.activity.UschoolActivity.onCreate(UschoolActivity.java:31)
10-20 10:14:36.938 4708-4708/? W/System.err: at android.app.Activity.performCreate(Activity.java:6222)
10-20 10:14:36.938 4708-4708/? W/System.err: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
10-20 10:14:36.938 4708-4708/? W/System.err: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2295)
10-20 10:14:36.938 4708-4708/? W/System.err: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2407)
10-20 10:14:36.938 4708-4708/? W/System.err: at android.app.ActivityThread.access$800(ActivityThread.java:151)
10-20 10:14:36.938 4708-4708/? W/System.err: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1319)
10-20 10:14:36.938 4708-4708/? W/System.err: at android.os.Handler.dispatchMessage(Handler.java:102)
10-20 10:14:36.938 4708-4708/? W/System.err: at android.os.Looper.loop(Looper.java:135)
10-20 10:14:36.938 4708-4708/? W/System.err: at android.app.ActivityThread.main(ActivityThread.java:5280)
10-20 10:14:36.938 4708-4708/? W/System.err: at java.lang.reflect.Method.invoke(Native Method)
10-20 10:14:36.938 4708-4708/? W/System.err: at java.lang.reflect.Method.invoke(Method.java:372)
10-20 10:14:36.938 4708-4708/? W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:963)
10-20 10:14:36.938 4708-4708/? W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:758)
10-20 10:14:36.938 4708-4708/? W/System.err: Caused by: java.lang.UnsatisfiedLinkError: dlopen failed: couldn't map "/data/data/com.invosas.mdc/qt-reserved-files/plugins/platforms/android/libqtforandroid.so" segment 2: Permission denied
10-20 10:14:36.939 4708-4708/? W/System.err: at java.lang.Runtime.load(Runtime.java:331)
10-20 10:14:36.939 4708-4708/? W/System.err: at java.lang.System.load(System.java:981)
10-20 10:14:36.939 4708-4708/? W/System.err: at org.qtproject.qt5.android.QtNative.loadQtLibraries(QtNative.java:172)
10-20 10:14:36.939 4708-4708/? W/System.err: at org.qtproject.qt5.android.QtActivityDelegate.loadApplication(QtActivityDelegate.java:582)
10-20 10:14:36.939 4708-4708/? W/System.err: ... 21 more
10-20 10:14:36.943 4708-4708/? D/PhoneWindow: DecorView - SCREEN_WEITH = 1920 - SCREE_HEIGHT = 1128
10-20 10:14:36.971 2986-3621/? V/WindowManagerService: Adding window Window{18d0655b u0 com.invosas.mdc/com.uuke.activity.UschoolActivity} at 3 of 9 (after Window{166a3ce3 u0 com.invosas.mdc/com.example.whiteboard.WelcomeActivity})

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