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src: prevent crash in TTYWrap::Initialize #26832

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src: prevent crash in TTYWrap::Initialize #26832

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Hakerh400
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@Hakerh400 Hakerh400 commented Mar 21, 2019

When console.log is called for the first time it initializes
TTYWrap object. However, if there is not enough space on the
V8 stack, creating function template fails and triggers
empty maybe local exception.

Fixes #26829

Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • tests and/or benchmarks are included
  • commit message follows commit guidelines

@nodejs-github-bot nodejs-github-bot added c++ Issues and PRs that require attention from people who are familiar with C++. tty Issues and PRs related to the tty subsystem. labels Mar 21, 2019
src/tty_wrap.cc Outdated Show resolved Hide resolved
@joyeecheung
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BTW, Environment::SetMethod() and Environment::SetMethodNoSideEffect() also does ToLocalChecked() on the maybe returned by FunctionTemplate::GetFunction() and also does FromJust() on the Maybe returned by Object::Set(), I wonder why this only crashes in the non-heplers here.

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CI: https://ci.nodejs.org/job/node-test-pull-request/21822/ (though it's rather flaky now)

test/parallel/test-ttywrap-stack.js Outdated Show resolved Hide resolved
@BridgeAR BridgeAR added the author ready PRs that have at least one approval, no pending requests for changes, and a CI started. label Mar 25, 2019
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LGTM with a suggestion.

src/tty_wrap.cc Outdated Show resolved Hide resolved
When console.log is called for the first time it initializes
TTYWrap object. However, if there is not enough space on the
V8 stack, creating function template fails and triggers
empty maybe local exception.
@Hakerh400
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CI was failing due to flaky test-worker-prof and the last run timed out for some reason. The failure seems unrelated to this PR.

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BridgeAR pushed a commit to BridgeAR/node that referenced this pull request Apr 4, 2019
When console.log is called for the first time it initializes
TTYWrap object. However, if there is not enough space on the
V8 stack, creating function template fails and triggers
empty maybe local exception.

PR-URL: nodejs#26832
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
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BridgeAR commented Apr 4, 2019

Landed in 6fb32ac 🎉

@BridgeAR BridgeAR closed this Apr 4, 2019
@Hakerh400 Hakerh400 deleted the tty branch April 4, 2019 17:15
BethGriggs pushed a commit that referenced this pull request Apr 9, 2019
When console.log is called for the first time it initializes
TTYWrap object. However, if there is not enough space on the
V8 stack, creating function template fails and triggers
empty maybe local exception.

PR-URL: #26832
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Signed-off-by: Beth Griggs <Bethany.Griggs@uk.ibm.com>
@BethGriggs BethGriggs mentioned this pull request Apr 9, 2019
BethGriggs pushed a commit that referenced this pull request Apr 10, 2019
When console.log is called for the first time it initializes
TTYWrap object. However, if there is not enough space on the
V8 stack, creating function template fails and triggers
empty maybe local exception.

PR-URL: #26832
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Signed-off-by: Beth Griggs <Bethany.Griggs@uk.ibm.com>
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6 participants