[Galaxy S II Android Development] danilomkt:
I will try SuperSU.

Check logcat:

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03-21 23:43:40.020 22584 22584 I pal.androidter: type=1400 audit(0.0:1337): avc: denied { read } for name="jit-22584.dump" dev=mmcblk0p10 ino=140238 scontext=u:r:untrusted_app_25:s0:c512,c768 tcontext=u:object_r:method_trace_data_file:s0:c512,c768 tclass=file permissive=1

03-21 23:43:40.020 22584 22584 I pal.androidter: type=1400 audit(0.0:1338): avc: denied { execute } for path="/data/misc/trace/jit-22584.dump" dev=mmcblk0p10 ino=140238 scontext=u:r:untrusted_app_25:s0:c512,c768 tcontext=u:object_r:method_trace_data_file:s0:c512,c768 tclass=file permissive=1

03-21 23:43:40.022 22584 22584 W pal.androidter: Using default instruction set features for ARM CPU variant (cortex-a9) using conservative defaults

03-21 23:43:41.123 22584 22611 D vndksupport: Loading /system/lib/egl/libEGL_mali.so from current namespace instead of sphal namespace.

03-21 23:43:41.139 22584 22584 V Term : onCreate

03-21 23:43:41.229 22584 22584 D OpenGLRenderer: Skia GL Pipeline

03-21 23:43:41.280 22614 22614 I RenderThread: type=1400 audit(0.0:1339): avc: denied { read } for name="cpu" dev=sysfs ino=26 scontext=u:r:untrusted_app_25:s0:c512,c768 tcontext=u:object_r:sysfs_cpuinfo:s0 tclass=dir permissive=1

03-21 23:43:41.285 22614 22614 I RenderThread: type=1400 audit(0.0:1340): avc: denied { open } for name="cpu" dev=sysfs ino=26 scontext=u:r:untrusted_app_25:s0:c512,c768 tcontext=u:object_r:sysfs_cpuinfo:s0 tclass=dir permissive=1

03-21 23:43:41.370 22584 22584 D Term : TermService started

03-21 23:43:41.374 22584 22584 I TermService: Activity called onBind()

03-21 23:43:41.401 22584 22584 I Term : Bound to TermService

03-21 23:43:41.401 22584 22584 I TermService: Activity binding to service

03-21 23:43:41.481 22584 22611 D libEGL : loaded /system/lib/egl/libEGL_mali.so

03-21 23:43:41.606 22584 22611 D vndksupport: Loading /system/lib/egl/libGLESv1_CM_mali.so from current namespace instead of sphal namespace.

03-21 23:43:41.609 22584 22611 D libEGL : loaded /system/lib/egl/libGLESv1_CM_mali.so

03-21 23:43:41.618 22584 22595 I pal.androidter: Background concurrent copying GC freed 7671(384KB) AllocSpace objects, 5(164KB) LOS objects, 28% free, 1286KB/1798KB, paused 14.110ms total 93.263ms

03-21 23:43:41.620 22616 22616 I sh : type=1400 audit(0.0:1341): avc: denied { search } for name="cpu" dev=sysfs ino=26 scontext=u:r:untrusted_app_25:s0:c512,c768 tcontext=u:object_r:sysfs_cpuinfo:s0 tclass=dir permissive=1

03-21 23:43:41.620 22616 22616 I sh : type=1400 audit(0.0:1342): avc: denied { read } for name="online" dev=sysfs ino=27 scontext=u:r:untrusted_app_25:s0:c512,c768 tcontext=u:object_r:sysfs_cpuinfo:s0 tclass=file permissive=1

03-21 23:43:41.620 22616 22616 I sh : type=1400 audit(0.0:1343): avc: denied { open } for name="online" dev=sysfs ino=27 scontext=u:r:untrusted_app_25:s0:c512,c768 tcontext=u:object_r:sysfs_cpuinfo:s0 tclass=file permissive=1

03-21 23:43:41.805 22584 22584 I libjackpal-androidterm: JNI_OnLoad

03-21 23:43:42.008 22584 22626 I Term : waiting for: 22616

03-21 23:43:42.023 22584 22611 D vndksupport: Loading /system/lib/egl/libGLESv2_mali.so from current namespace instead of sphal namespace.

03-21 23:43:42.025 22584 22611 D libEGL : loaded /system/lib/egl/libGLESv2_mali.so

03-21 23:43:42.299 22584 22614 E : Device driver API match

03-21 23:43:42.299 22584 22614 E : Device driver API version: 29

03-21 23:43:42.299 22584 22614 E : User space API version: 29

03-21 23:43:42.299 22584 22614 E : mali: REVISION=Linux-r3p2-01rel3 BUILD_DATE=Tue Jul 22 19:59:34 KST 2014

03-21 23:43:42.323 22584 22614 D vndksupport: Loading /vendor/lib/hw/gralloc.exynos4.so from current namespace instead of sphal namespace.

03-21 23:43:42.396 22584 22614 I ConfigStore: android::hardware::configstore::V1_0::ISurfaceFlingerConfigs::hasWideColorDisplay retrieved: 0

03-21 23:43:42.396 22584 22614 I ConfigStore: android::hardware::configstore::V1_0::ISurfaceFlingerConfigs::hasHDRDisplay retrieved: 0

03-21 23:43:42.396 22584 22614 I OpenGLRenderer: Initialized EGL, version 1.4

03-21 23:43:42.397 22584 22614 D OpenGLRenderer: Swap behavior 1

03-21 23:43:42.525 22614 22614 W RenderThread: type=1400 audit(0.0:1345): avc: granted { write } for name="ion" dev=tmpfs ino=1535 scontext=u:r:untrusted_app_25:s0:c512,c768 tcontext=u:object_r:ion_device:s0 tclass=chr_file

03-21 23:43:42.525 22614 22614 W RenderThread: type=1400 audit(0.0:1346): avc: granted { write } for name="ion" dev=tmpfs ino=1535 scontext=u:r:untrusted_app_25:s0:c512,c768 tcontext=u:object_r:ion_device:s0 tclass=chr_file

03-21 23:43:42.530 22584 22614 D vndksupport: Loading /vendor/lib/hw/android.hardware.graphics.mapper@2.0-impl-exynos4.so from current namespace instead of sphal namespace.

03-21 23:43:42.532 22584 22614 D vndksupport: Loading /vendor/lib/hw/gralloc.exynos4.so from current namespace instead of sphal namespace.

03-21 23:43:42.736 22584 22614 I OpenGLRenderer: Davey! duration=1310ms; Flags=0, IntendedVsync=6843398097392, Vsync=6843631430716, OldestInputEvent=9223372036854775807, NewestInputEvent=0, HandleInputStart=6843634018652, AnimationStart=6843634080861, PerformTraversalsStart=6843634084944, DrawStart=6844520429361, SyncQueued=6844563290861, SyncStart=6844566390736, IssueDrawCommandsStart=6844566672361, SwapBuffers=6844699250736, FrameCompleted=6844711554445, DequeueBufferDuration=0, QueueBufferDuration=596000,

03-21 23:43:43.175 22584 22595 I pal.androidter: Background concurrent copying GC freed 3132(293KB) AllocSpace objects, 0(0B) LOS objects, 25% free, 1505KB/2017KB, paused 3.310ms total 356.415ms

03-21 23:43:57.507 22584 22595 I pal.androidter: Background concurrent copying GC freed 5982(518KB) AllocSpace objects, 0(0B) LOS objects, 27% free, 1370KB/1882KB, paused 223us total 148.321ms

03-21 23:44:27.657 22584 22610 I pal.androidter: Waiting for a blocking GC ProfileSaver

03-21 23:44:27.686 22584 22595 I pal.androidter: Background concurrent copying GC freed 4983(441KB) AllocSpace objects, 0(0B) LOS objects, 27% free, 1365KB/1877KB, paused 14.198ms total 48.977ms

03-21 23:44:27.686 22584 22610 I pal.androidter: WaitForGcToComplete blocked ProfileSaver on HeapTrim for 29.039ms

03-21 23:44:41.990 22814 22814 I ls : type=1400 audit(0.0:1350): avc: denied { read } for name="/" dev=rootfs ino=1 scontext=u:r:untrusted_app_25:s0:c512,c768 tcontext=u:object_r:rootfs:s0 tclass=dir permissive=1

03-21 23:44:41.990 22814 22814 I ls : type=1400 audit(0.0:1351): avc: denied { open } for name="/" dev=rootfs ino=1 scontext=u:r:untrusted_app_25:s0:c512,c768 tcontext=u:object_r:rootfs:s0 tclass=dir permissive=1

03-21 23:44:41.990 22814 22814 I ls : type=1400 audit(0.0:1352): avc: denied { getattr } for path="/preload" dev=mmcblk0p12 ino=2 scontext=u:r:untrusted_app_25:s0:c512,c768 tcontext=u:object_r:unlabeled:s0 tclass=dir permissive=1

03-21 23:44:41.990 22814 22814 I ls : type=1400 audit(0.0:1353): avc: denied { getattr } for path="/efs" dev=mmcblk0p1 ino=2 scontext=u:r:untrusted_app_25:s0:c512,c768 tcontext=u:object_r:efs_device_file:s0 tclass=dir permissive=1

03-21 23:44:41.990 22814 22814 I ls : type=1400 audit(0.0:1354): avc: denied { getattr } for path="/vndservice_contexts" dev=rootfs ino=1193 scontext=u:r:untrusted_app_25:s0:c512,c768 tcontext=u:object_r:vndservice_contexts_file:s0 tclass=file permissive=1

03-21 23:44:59.542 22584 22595 I pal.androidter: Background concurrent copying GC freed 3993(397KB) AllocSpace objects, 0(0B) LOS objects, 24% free, 1645KB/2MB, paused 867us total 212.663ms

03-21 23:45:54.050 23045 23045 I logcat : type=1400 audit(0.0:1366): avc: denied { search } for name="cpu" dev=sysfs ino=26 scontext=u:r:untrusted_app_25:s0:c512,c768 tcontext=u:object_r:sysfs_cpuinfo:s0 tclass=dir permissive=1

03-21 23:45:54.050 23045 23045 I logcat : type=1400 audit(0.0:1367): avc: denied { read } for name="online" dev=sysfs ino=27 scontext=u:r:untrusted_app_25:s0:c512,c768 tcontext=u:object_r:sysfs_cpuinfo:s0 tclass=file permissive=1

03-21 23:45:54.050 23045 23045 I logcat : type=1400 audit(0.0:1368): avc: denied { open } for name="online" dev=sysfs ino=27 scontext=u:r:untrusted_app_25:s0:c512,c768 tcontext=u:object_r:sysfs_cpuinfo:s0 tclass=file permissive=1

03-21 23:45:54.050 23045 23045 I logcat : type=1400 audit(0.0:1369): avc: denied { getattr } for path="/sys/devices/system/cpu/online" dev=sysfs ino=27 scontext=u:r:untrusted_app_25:s0:c512,c768 tcontext=u:object_r:sysfs_cpuinfo:s0 tclass=file permissive=1