kernel panic when reboot linux

[ 0.001000] Calibrating delay loop... 18.30 BogoMIPS (lpj=9152)

[ 0.016000] pid_max: default: 32768 minimum: 301

[ 0.025000] Mount-cache hash table entries: 512

[ 0.112000] devtmpfs: initialized

[ 0.145000] NET: Registered protocol family 16

[ 0.258000] bio: create slab <bio-0> at 0

[ 0.296000] Switching to clocksource timer

[ 0.345000] NET: Registered protocol family 2

[ 0.352000] IP route cache hash table entries: 1024 (order: 0, 4096 bytes)

[ 0.378000] TCP established hash table entries: 512 (order: 0, 4096 bytes)

[ 0.379000] TCP bind hash table entries: 512 (order: -1, 2048 bytes)

[ 0.380000] TCP: Hash tables configured (established 512 bind 512)

[ 0.380000] TCP reno registered