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kernel panic: Can't create rootfsAppArmor: AppArmor initialized
Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes)
Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes)
Mount-cache hash table entries: 16384 (order: 5, 131072 bytes)
Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes)
Kernel panic - not syncing: Can't create rootfs
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.20.0-rc7-next-20181218+ #174
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
 panic+0x2ad/0x632 kernel/panic.c:214
 init_mount_tree fs/namespace.c:3647 [inline]
 mnt_init+0x223/0x403 fs/namespace.c:3695
 vfs_caches_init+0x113/0x123 fs/dcache.c:3116
 start_kernel+0x964/0x9e0 init/main.c:722
 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:470
 x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:451
 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243
Rebooting in 86400 seconds..