strange freezing syslog examples

Dec  5 15:43:20 macaroni kernel: [16160.709708] NVRM: GPU at 0000:02:00.0 has fallen off the bus.
Dec  5 15:43:20 macaroni kernel: [16160.709719] NVRM: GPU at 0000:02:00.0 has fallen off the bus.
\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00....00\00\00Dec  5 22:30:42 macaroni kernel: imklog 5.8.11, log source = /proc/kmsg started.
Dec  5 22:30:42 macaroni rsyslogd: [origin software="rsyslogd" swVersion="5.8.11" x-pid="766" x-info="http://www.rsyslog.com"] start


Dec  5 22:32:46 macaroni whoopsie[1064]: online
Dec  5 22:33:25  whoopsie[1064]: last message repeated 3 times
Dec  5 22:33:26 macaroni whoopsie[1064]: online
Dec  5 22:35:04 macaroni whoopsie[1064]: online
\00\00\00\00\00\00\00\00\00\00\00\00\00\...00\00\00\00\00\00\00\00Dec  5 22:37:27 macaroni kernel: imklog 5.8.11, log source = /proc/kmsg started.c


Dec  5 22:39:47 macaroni kernel: [  175.486512] NVRM: GPU at 0000:02:00.0 has fallen off the bus.
Dec  5 22:39:47 macaroni kernel: [  175.486524] NVRM: GPU at 0000:02:00.0 has fallen off the bus.
Dec  5 22:40:30 macaroni kernel: [  219.046551] ------------[ cut here ]------------
Dec  5 22:40:30 macaroni kernel: [  219.046564] WARNING: CPU: 2 PID: 2260 at /build/buildd/linux-3.11.0/net/sched/sch_generic.c:260 dev_watchdog+0x26a/0x280()
Dec  5 22:40:30 macaroni kernel: [  219.046566] NETDEV WATCHDOG: eth0 (forcedeth): transmit queue 0 timed out

Dec  5 22:55:57 macaroni kernel: [ 1146.188064] forcedeth 0000:00:07.0 eth0: nv_stop_tx: TransmitterStatus remained busy
Dec  5 23:04:22 macaroni kernel: [ 1651.968992] forcedeth 0000:00:07.0 eth0: Got tx_timeout. irq status: 00000030
Dec  5 23:04:23 macaroni kernel: [ 1652.513719] forcedeth 0000:00:07.0 eth0: nv_stop_tx: TransmitterStatus remained busy
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