Random SegFault 1.8.13-stable-225171a4

[avocadochicken]

Hi there,

my node just crashed. I want to submit some information that might be helpful...
I don't know if this is a bug of any importance. I will just restart geth ;)

System information

geth 1.8.13-stable-225171a4
Linux machine 4.15.0-24-generic #26-Ubuntu SMP

Node was synchronizing. Started with:
geth --syncmode fast --rpc console

Steps to reproduce the behaviour

Can't tell...

Backtrace

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x511606]

goroutine 2182 [running]:
math/big.(*Int).Cmp(0x0, 0xc4229541c0, 0x607df981b8c0af6b)
	/usr/lib/go-1.10/src/math/big/int.go:319 +0x26
github.com/ethereum/go-ethereum/eth.(*ProtocolManager).synchronise(0xc4211560c0, 0xc449923e00)
	/build/ethereum-6UP7Nh/ethereum-1.8.13+build14601+bionic/build/_workspace/src/github.com/ethereum/go-ethereum/eth/sync.go:194 +0x2e8
created by github.com/ethereum/go-ethereum/eth.(*ProtocolManager).syncer
	/build/ethereum-6UP7Nh/ethereum-1.8.13+build14601+bionic/build/_workspace/src/github.com/ethereum/go-ethereum/eth/sync.go:155 +0x21e