Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000a

what wrong ?
[ 1.353937] VFS: Mounted root (squashfs filesystem) readonly on device 31:5.
[ 1.361711] Freeing unused kernel memory: 252K
[ 1.366217] This architecture does not have kernel memory protection.
[ 2.077309] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000a
[ 2.077309]
[ 2.086470] Rebooting in 1 seconds..

SOC MT7621
KERNEL:4.4
LEDE 17.01
GCC 5.4
UCLIBC 1.0.14