crash in xsnap heap exhaustion test

00000-options.json

{"os":"Linux","name":"xsnap test worker","debug":true,"meteringLimit":0}

00001-evaluate.dat

  let stuff = '1234';
  while (true) {
    stuff = stuff + stuff;
  }
  

heap-exhaustion-test-fail.txt

(base) ~/projects/agoric/agoric-sdk/packages/xsnap
15:31 connolly@jambox$ yarn test -v test/test-xs-limits.js -m 'heap exhaustion: orderly fail-stop'
yarn run v1.22.5
$ ava -v test/test-xs-limits.js -m 'heap exhaustion: orderly fail-stop'

  ✖ heap exhaustion: orderly fail-stop 
  ─

  heap exhaustion: orderly fail-stop

  Promise rejected with unexpected exception:

  ExitSignal (ErrorSignal) @Error {
    code: 'SIGSEGV',
    message: 'xsnap test worker exited due to signal SIGSEGV',
  }

  Expected code to equal:

  11

  › ChildProcess.<anonymous> (file://src/xsnap.js:116:22)
  › Process.ChildProcess._handle.onexit (internal/child_process.js:277:12)

  ─

  1 test failed
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
(base) ~/projects/agoric/agoric-sdk/packages/xsnap
15:31 connolly@jambox$ file core
core: ELF 64-bit LSB core file x86-64, version 1 (SYSV), SVR4-style, from '/home/connolly/projects/agoric/agoric-sdk/packages/xsnap/xsnap-native/xsnap/bui', real uid: 1000, effective uid: 1000, real gid: 1000, effective gid: 1000, execfn: '/home/connolly/projects/agoric/agoric-sdk/packages/xsnap/xsnap-native/xsnap/build/bin/lin/debug/xsnap-worker', platform: 'x86_64'
(base) ~/projects/agoric/agoric-sdk/packages/xsnap
15:31 connolly@jambox$ gdb ./xsnap-native/xsnap/build/bin/lin/debug/xsnap-worker core
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and "show warranty" for details.
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Reading symbols from ./xsnap-native/xsnap/build/bin/lin/debug/xsnap-worker...done.
[New LWP 30274]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/home/connolly/projects/agoric/agoric-sdk/packages/xsnap/xsnap-native/xsnap/bui'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f25980cf8e7 in mprotect () at ../sysdeps/unix/syscall-template.S:78
78      ../sysdeps/unix/syscall-template.S: No such file or directory.
(gdb) bt
#0  0x00007f25980cf8e7 in mprotect () at ../sysdeps/unix/syscall-template.S:78
#1  0x00005615405c6467 in fxAllocateChunks (the=0x561540ce12b0, size=1094717440)
    at /home/connolly/projects/agoric/agoric-sdk/packages/xsnap/xsnap-native/xsnap/makefiles/lin/../../sources/xsnapPlatform.c:212
#2  0x00005615405441b2 in fxGrowChunks (the=0x561540ce12b0, size=541065248)
    at /home/connolly/projects/agoric/agoric-sdk/packages/xsnap/moddable/xs/sources/xsMemory.c:505
#3  0x00005615405440d7 in fxGrowChunk (the=0x561540ce12b0, size=536870932)
    at /home/connolly/projects/agoric/agoric-sdk/packages/xsnap/moddable/xs/sources/xsMemory.c:484
#4  0x0000561540545d3a in fxNewChunk (the=0x561540ce12b0, size=536870932)
    at /home/connolly/projects/agoric/agoric-sdk/packages/xsnap/moddable/xs/sources/xsMemory.c:1196
#5  0x00005615404c6d21 in fxConcatString (the=0x561540ce12b0, a=0x561540d001c0, b=0x561540d001a0)
    at /home/connolly/projects/agoric/agoric-sdk/packages/xsnap/moddable/xs/sources/xsAll.c:163
#6  0x0000561540588d24 in fxRunID (the=0x561540ce12b0, generator=0x0, count=0)
    at /home/connolly/projects/agoric/agoric-sdk/packages/xsnap/moddable/xs/sources/xsRun.c:3213
#7  0x0000561540592b68 in fxRunScript (the=0x561540ce12b0, script=0x561540d0e630, _this=0x7f25577cf650, _target=0x0, 
    closures=0x7f25577cf670, object=0x0, module=0x7f25577b3030)
    at /home/connolly/projects/agoric/agoric-sdk/packages/xsnap/moddable/xs/sources/xsRun.c:4756
#8  0x0000561540529323 in fx_eval (the=0x561540ce12b0)
---Type <return> to continue, or q <return> to quit---
    at /home/connolly/projects/agoric/agoric-sdk/packages/xsnap/moddable/xs/sources/xsGlobal.c:538
#9  0x0000561540575d1b in fxRunID (the=0x561540ce12b0, generator=0x0, count=1)
    at /home/connolly/projects/agoric/agoric-sdk/packages/xsnap/moddable/xs/sources/xsRun.c:842
#10 0x00005615404cabb1 in fxRunCount (the=0x561540ce12b0, count=1)
    at /home/connolly/projects/agoric/agoric-sdk/packages/xsnap/moddable/xs/sources/xsAPI.c:1127
#11 0x00005615405d0119 in main (argc=2, argv=0x7fff5d879a98)
    at /home/connolly/projects/agoric/agoric-sdk/packages/xsnap/xsnap-native/xsnap/makefiles/lin/../../sources/xsnap-worker.c:303