Memory overflow in LFVM found with fuzzing

[LuisPH3]

The following command failed, (reproducible once #547 is merged or with dev branch):

~/code/Tosca$ go test ./go/ct/evm_fuzz_test.go 
--- FAIL: FuzzDifferentialLfvmVsGeth (0.13s)
   --- FAIL: FuzzDifferentialLfvmVsGeth/23bc1d2336dd2e5b (0.00s)
panic: runtime error: growslice: len out of range [recovered]
   panic: runtime error: growslice: len out of range

goroutine 27766 [running]:
testing.tRunner.func1.2({0x6f5a20, 0x853eb0})
   /snap/go/10630/src/testing/testing.go:1631 +0x24a
testing.tRunner.func1()
   /snap/go/10630/src/testing/testing.go:1634 +0x377
panic({0x6f5a20?, 0x853eb0?})
   /snap/go/10630/src/runtime/panic.go:770 +0x132
github.com/Fantom-foundation/Tosca/go/vm/lfvm.(*Memory).EnsureCapacity(0xc005d48e80, 0xc005d3f8c0?, 0xc00a1070a8?, 0xc005d3f8c8)
   /home/luis/code/Tosca/go/vm/lfvm/memory.go:96 +0x111
github.com/Fantom-foundation/Tosca/go/vm/lfvm.getResult(0xc005d3f8c8)
   /home/luis/code/Tosca/go/vm/lfvm/interpreter.go:200 +0xa5
github.com/Fantom-foundation/Tosca/go/vm/lfvm.ctAdapter.StepN({}, 0xc005d80600, 0x1)
   /home/luis/code/Tosca/go/vm/lfvm/ct.go:91 +0x5da
command-line-arguments_test.differentialFuzz.func1(0xc005d50820, {0xc0092df2f0?, 0x1, 0xc00a1077d0?}, 0x4c9f78?, 0x0?, {0xc0092e5650?, 0x0?, 0x0?})
   /home/luis/code/Tosca/go/ct/evm_fuzz_test.go:92 +0x1f7
reflect.Value.call({0x6f71c0?, 0xc008bb88a0?, 0x13?}, {0x7452b1, 0x4}, {0xc005d46900, 0x5, 0x8?})
   /snap/go/10630/src/reflect/value.go:596 +0xca6
reflect.Value.Call({0x6f71c0?, 0xc008bb88a0?, 0x4f9acd?}, {0xc005d46900?, 0x743fc0?, 0xf?})
   /snap/go/10630/src/reflect/value.go:380 +0xb9
testing.(*F).Fuzz.func1.1(0xc005d50820?)
   /snap/go/10630/src/testing/fuzz.go:335 +0x325
testing.tRunner(0xc005d50820, 0xc005d44360)
   /snap/go/10630/src/testing/testing.go:1689 +0xfb
created by testing.(*F).Fuzz.func1 in goroutine 18506
   /snap/go/10630/src/testing/fuzz.go:322 +0x574
FAIL	command-line-arguments	0.376s
FAIL

An early presumption is that the gas computation failed and did not prevent a very large memory use. Geth executes the input data correctly.

[facuMH]

as of commit 2f165a0d44da026e5cff15cb95f36701257adb52 running

go test ./go/ct/evm_fuzz_test.go
ok      command-line-arguments  0.873s

So if the original assumption was correct, this has been fixed by #541 and #545