BUS error on L2, TLB conflict on L1

<------------ from L2 shell ------------->
[    6.322559] pci 0000:00:03.0: BAR 6: assigned [mem 0x10040000-0x1007ffff pref]
[    6.429395] pci 0000:00:01.0: BAR 1: assigned [mem 0x10080000-0x10080fff]
[    6.531432] pci 0000:00:02.0: BAR 1: assigned [mem 0x10081000-0x10081fff]
[    6.631882] pci 0000:00:03.0: BAR 1: assigned [mem 0x10082000-0x10082fff]
[    6.731030] pci 0000:00:01.0: BAR 0: assigned [io  0x1000-0x103f]
[    6.820238] pci 0000:00:02.0: BAR 0: assigned [io  0x1040-0x105f]
[    6.910746] pci 0000:00:03.0: BAR 0: assigned [io  0x1060-0x107f]
./run-guest.sh: line 121:  1669 Bus error               ./qemu-system-aarch64 -smp $SMP -m $MEMSIZE -machine virt${DUMPDTB}${IRQ} -cpu host -kernel ${KERNEL} -enable-kvm ${DTB} -drive if=none,file=$FS,id=vda,cache=none,format=raw -device virtio-blk-pci,drive=vda -netdev user,id=net0,hostfwd=tcp::2222-:22 -device virtio-net-pci,netdev=net0,mac=de:ad:be:ef:41:48 $BRIDGE_IF -display none -serial $CONSOLE -qmp unix:/var/run/qmp,server,nowait -append "earlycon=pl011,0x09000000 console=ttyAMA0 root=/dev/vda rw $CMDLINE"
[L1 ~]$

<------------ from L1 shell ------------->
[L1 ~]$Unhandled fault: TLB conflict abort (0x92000030) at 0x0000000005b01d30