[Galaxy Tab 8.9 SGH-i957 Android Development] fk1991:
Below is my logcat before it rebooted. I compared two logcat entries between two reboots, this is the only interesting capture. Hopefully can help the experts here found an answer for this.

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09-29 11:49:30.110 D/memalloc( 165): ion: Unmapping buffer base:0x424f1000 size:98304

09-29 11:49:35.386 W/System ( 1231): Error converting session.

09-29 11:49:35.396 W/System ( 1231): java.io.EOFException

09-29 11:49:35.396 W/System ( 1231):	at libcore.io.Streams.readFully(Streams.java:83)

09-29 11:49:35.396 W/System ( 1231):	at java.io.DataInputStream.readInt(DataInputStream.java:124)

09-29 11:49:35.396 W/System ( 1231):	at org.apache.harmony.xnet.provider.jsse.AbstractSessionContext.toSession(AbstractSessionContext.java:230)

09-29 11:49:35.396 W/System ( 1231):	at org.apache.harmony.xnet.provider.jsse.ClientSessionContext.getSession(ClientSessionContext.java:86)

09-29 11:49:35.396 W/System ( 1231):	at org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.getCachedClientSession(OpenSSLSocketImpl.java:199)

09-29 11:49:35.396 W/System ( 1231):	at org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:341)

09-29 11:49:35.396 W/System ( 1231):	at android.net.SSLCertificateSocketFactory.verifyHostname(SSLCertificateSocketFactory.java:189)

09-29 11:49:35.396 W/System ( 1231):	at android.net.SSLCertificateSocketFactory.createSocket(SSLCertificateSocketFactory.java:332)

09-29 11:49:35.396 W/System ( 1231):	at org.apache.http.conn.ssl.SSLSocketFactory.createSocket(SSLSocketFactory.java:375)

09-29 11:49:35.396 W/System ( 1231):	at com.google.android.volley.GoogleHttpClient$WrappedLayeredSocketFactory.createSocket(GoogleHttpClient.java:172)

09-29 11:49:35.396 W/System ( 1231):	at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:165)

09-29 11:49:35.396 W/System ( 1231):	at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)

09-29 11:49:35.396 W/System ( 1231):	at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)

09-29 11:49:35.396 W/System ( 1231):	at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)

09-29 11:49:35.396 W/System ( 1231):	at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)

09-29 11:49:35.396 W/System ( 1231):	at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)

09-29 11:49:35.396 W/System ( 1231):	at com.google.android.volley.AndroidHttpClient.execute(AndroidHttpClient.java:308)

09-29 11:49:35.396 W/System ( 1231):	at com.google.android.volley.GoogleHttpClient.executeWithoutRewriting(GoogleHttpClient.java:215)

09-29 11:49:35.396 W/System ( 1231):	at com.google.android.volley.GoogleHttpClient.execute(GoogleHttpClient.java:258)

09-29 11:49:35.396 W/System ( 1231):	at com.google.android.volley.GoogleHttpClient.execute(GoogleHttpClient.java:315)

09-29 11:49:35.396 W/System ( 1231):	at com.android.volley.toolbox.HttpClientStack.performRequest(HttpClientStack.java:88)

09-29 11:49:35.396 W/System ( 1231):	at com.google.android.volley.GoogleHttpClientStack.performRequest(GoogleHttpClientStack.java:41)

09-29 11:49:35.396 W/System ( 1231):	at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:93)

09-29 11:49:35.396 W/System ( 1231):	at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:95)

09-29 11:49:35.456 D/lights ( 421): set_light_buttons: color=0xff000000, tlc=2.

09-29 11:49:38.258 D/Finsky ( 1231): [1] UpdateChecker.showManualUpdateNotifications: Notifying user that [4] applications have updates.

09-29 11:49:38.499 D/memalloc( 165): ion: Allocated buffer base:0x41e8f000 size:98304 fd:37

09-29 11:49:38.499 D/memalloc( 542): ion: Mapped buffer base:0x5cb79000 size:98304 offset:0 fd:64

09-29 11:49:43.453 D/memalloc( 165): ion: Allocated buffer base:0x424f1000 size:98304 fd:54

09-29 11:49:43.453 D/memalloc( 542): ion: Mapped buffer base:0x5cb91000 size:98304 offset:0 fd:67

09-29 11:49:43.483 D/memalloc( 165): ion: Allocated buffer base:0x4263e000 size:98304 fd:65

09-29 11:49:43.483 D/memalloc( 542): ion: Mapped buffer base:0x5cba9000 size:98304 offset:0 fd:70

09-29 11:49:43.804 D/memalloc( 542): ion: Unmapping buffer base:0x5cb91000 size:98304

09-29 11:49:43.804 D/memalloc( 542): ion: Unmapping buffer base:0x5cba9000 size:98304

09-29 11:49:43.804 D/memalloc( 165): ion: Freeing buffer base:0x424f1000 size:98304 fd:54

09-29 11:49:43.804 D/memalloc( 165): ion: Unmapping buffer base:0x424f1000 size:98304

09-29 11:49:43.804 D/memalloc( 165): ion: Freeing buffer base:0x4263e000 size:98304 fd:65

09-29 11:49:43.804 D/memalloc( 165): ion: Unmapping buffer base:0x4263e000 size:98304

09-29 11:49:43.804 D/memalloc( 542): ion: Unmapping buffer base:0x5cb79000 size:98304

09-29 11:49:43.854 D/memalloc( 165): ion: Freeing buffer base:0x41e8f000 size:98304 fd:37

09-29 11:49:43.854 D/memalloc( 165): ion: Unmapping buffer base:0x41e8f000 size:98304

09-29 11:50:01.291 D/dalvikvm( 593): GC_CONCURRENT freed 1836K, 71% free 2459K/8451K, paused 3ms+2ms, total 58ms

09-29 11:50:12.642 D/RPC ( 421): modem entered reset for client 0x16e6070, cb=0x0

09-29 11:50:12.642 D/RPC ( 421): xprt=0x16ea140 - restart begin

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