geth immediately runs out of memory on start

[evq]

Description

I'm using a fresh profile on linux, running current master.

Actual result:

GETH: spawned
INFO [08-14|19:47:33.192] Maximum peer count                       ETH=0 LES=100 total=10
INFO [08-14|19:47:33.195] Starting peer-to-peer node               instance=Geth/v1.8.13-stable-225171a4/linux-amd64/go1.10.3
INFO [08-14|19:47:33.195] Allocated cache and file handles         database=/home/user/.config/brave-development/ethereum/ropsten/geth/lightchaindata cache=10485 handles=1024
fatal error: runtime: out of memory

runtime stack:
runtime.throw(0xf59575, 0x16)
        /home/travis/.gimme/versions/go1.10.3.linux.amd64/src/runtime/panic.go:616 +0x81
runtime.sysMap(0xc420600000, 0xa3d00000, 0x0, 0x1b890b8)
        /home/travis/.gimme/versions/go1.10.3.linux.amd64/src/runtime/mem_linux.go:216 +0x20a
runtime.(*mheap).sysAlloc(0x1b6f760, 0xa3d00000, 0x7d5e50daea18)
        /home/travis/.gimme/versions/go1.10.3.linux.amd64/src/runtime/malloc.go:470 +0xd4
runtime.(*mheap).grow(0x1b6f760, 0x51e80, 0x0)

Expected result:
Geth runs

Reproduces how often:
100%

Brave Version

about:brave info:

Reproducible on current live release:

Additional Information

[evq]

If I delete this flag geth starts normally:

    '--cache.database',
    gethCache,

GETH: spawned
INFO [08-14|19:51:28.925] Maximum peer count                       ETH=0 LES=100 total=10
INFO [08-14|19:51:28.927] Starting peer-to-peer node               instance=Geth/v1.8.13-stable-225171a4/linux-amd64/go1.10.3
INFO [08-14|19:51:28.928] Allocated cache and file handles         database=/home/user/.config/brave-development/ethereum/ropsten/geth/lightchaindata cache=768 handles=1024
INFO [08-14|19:51:28.991] Writing custom genesis block
INFO [08-14|19:51:29.039] Persisted trie from memory database      nodes=355 size=51.89kB time=4.513091ms gcnodes=0 gcsize=0.00B gctime=0s livenodes=1 livesize=0.00B
INFO [08-14|19:51:29.040] Initialised chain configuration          config="{ChainID: 3 Homestead: 0 DAO: <nil> DAOSupport: true EIP150: 0 EIP155: 10 EIP158: 10 Byzantium: 1700000 Constantinople: <nil> Engine: ethash}"
INFO [08-14|19:51:29.040] Disk storage enabled for ethash caches   dir=/home/user/.config/brave-development/ethereum/ropsten/geth/ethash count=3
INFO [08-14|19:51:29.040] Disk storage enabled for ethash DAGs     dir=/home/user/.ethash                                                count=2
INFO [08-14|19:51:29.043] Added trusted checkpoint                 chain=ropsten block=3538943 hash=e1988f…86e1ce
INFO [08-14|19:51:29.043] Loaded most recent local header          number=0 hash=419410…ca4a2d td=1048576
INFO [08-14|19:51:29.044] Starting P2P networking
INFO [08-14|19:51:31.152] UDP listener up                          net=enode://6eecf78899bf46138fc068f988d276868072af7fcecd7d39d4782547571f3ad189728e5d4ebb62daad5f5c9776b825fd9ad9f9b195fa62af4be169fd2f9bfd94@[::]:40400
INFO [08-14|19:51:31.159] RLPx listener up                         self="enode://6eecf78899bf46138fc068f988d276868072af7fcecd7d39d4782547571f3ad189728e5d4ebb62daad5f5c9776b825fd9ad9f9b195fa62af4be169fd2f9bfd94@[::]:40400?discport=0"
WARN [08-14|19:51:31.159] Light client mode is an experimental feature