Cannot dereference 0x1401000: Exceeded higher bound of the address space.

[rahulmutt]

Description

Running the following program (needs dependency on criterion):

import Criterion.Main

-- The function we're benchmarking.
fib m | m < 0     = error "negative!"
      | otherwise = go m
  where
    go 0 = 0
    go 1 = 1
    go n = go (n-1) + go (n-2)

-- Our benchmark harness.
main = defaultMain [
  bgroup "fib" [ bench "1"  $ whnf fib 1
               , bench "5"  $ whnf fib 5
               , bench "9"  $ whnf fib 9
               , bench "11" $ whnf fib 11
               ]
  ]

throws an exception.

Expected Behavior

Should run showing all the benchmark results without crashing.

Actual Behavior

benchmarking fib/1
time                 6.925 ns   (6.734 ns .. 7.256 ns)
                     0.993 R²   (0.987 R² .. 0.998 R²)
mean                 6.935 ns   (6.764 ns .. 7.239 ns)
std dev              480.5 ps   (230.3 ps .. 780.5 ps)
variance introduced by outliers: 84% (severely inflated)

benchmarking fib/5
Exception in thread "Thread-8" eta.runtime.exception.EtaException: JException java.lang.IllegalArgumentException: Cannot dereference 0x2401000: Exceeded higher bound of the address space.
    at eta.runtime.thunk.Thunk.handleExceptionSimple(Thunk.java:282)
    at eta.runtime.thunk.Thunk.handleException(Thunk.java:264)
    at eta.runtime.thunk.UpdatableThunk.evaluate(UpdatableThunk.java:21)
    at statistics.statistics.Regression$$wrnfAll$1.applyN(Regression.hs:-1)
    at statistics.statistics.Regression$sat$37.applyV(Regression.hs:136)
    at eta.runtime.exception.Exception.catch_(Exception.java:132)
    at statistics.statistics.Regression$sat$36.applyV(Regression.hs:-1)
    at eta.runtime.stg.Closures$EvalLazyIO.enter(Closures.java:125)
    at eta.runtime.stg.Capability.schedule(Capability.java:183)
    at eta.runtime.concurrent.WorkerThread.run(WorkerThread.java:16)

Possible Fix

This is most likely due to a race condition in the MemoryManager. Running the above several times caused the exception to occur at different times with different addresses.

Steps to Reproduce

1. Create a simple Etlas project with an executable component that depends on criterion putting the code mentioned above in Main.hs.
2. etlas run [exe-name] -- --output result.html

Context

I was trying to get criterion to work out so we can setup benchmarks.

Your Environment

• Did you install an older version of Eta/Etlas before? Yes
• Current Eta & Etlas version: latest
• Operating System and version: OS X 10.11.5
• Link to your project: N/A

[rahulmutt]

Fixed with 1e37296