test-cpu-prof-worker-argv multiple assertion errors

[rickyes]

I have encountered this error twice.

• Test: sequential/test-cpu-prof-worker-argv
• Platform: macOS
• Console Output:

=== release test-cpu-prof-worker-argv ===
Path: sequential/test-cpu-prof-worker-argv
--- stderr ---
assert.js:103
 throw new AssertionError(obj);
 ^

AssertionError [ERR_ASSERTION]: Expected "actual" not to be strictly deep-equal to: []
 at verifyFrames (/Users/runner/runners/2.263.0/work/node/node/test/common/cpu-prof.js:34:10)
 at Object.<anonymous> (/Users/runner/runners/2.263.0/work/node/node/test/sequential/test-cpu-prof-worker-argv.js:37:3)
 at Module._compile (internal/modules/cjs/loader.js:1217:30)
 at Object.Module._extensions..js (internal/modules/cjs/loader.js:1238:10)
 at Module.load (internal/modules/cjs/loader.js:1066:32)
 at Function.Module._load (internal/modules/cjs/loader.js:954:14)
 at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)
 at internal/main/run_main_module.js:17:47 {
 generatedMessage: true,
 code: 'ERR_ASSERTION',
 actual: [],
 expected: [],
 operator: 'notDeepStrictEqual'
}

• Build Links: https://github.com/nodejs/node/pull/33991/checks?check_run_id=799470969

[Trott]

Seeing it on GitHub Actions CI for macOS too.

https://github.com/nodejs/node/pull/34096/checks?check_run_id=815269380

 Path: sequential/test-cpu-prof-worker-argv
--- stderr ---
assert.js:103
 throw new AssertionError(obj);
 ^

AssertionError [ERR_ASSERTION]: Expected "actual" not to be strictly deep-equal to: []
 at verifyFrames (/Users/runner/runners/2.263.0/work/node/node/test/common/cpu-prof.js:34:10)
 at Object.<anonymous> (/Users/runner/runners/2.263.0/work/node/node/test/sequential/test-cpu-prof-worker-argv.js:37:3)
 at Module._compile (internal/modules/cjs/loader.js:1217:30)
 at Object.Module._extensions..js (internal/modules/cjs/loader.js:1238:10)
 at Module.load (internal/modules/cjs/loader.js:1066:32)
 at Function.Module._load (internal/modules/cjs/loader.js:954:14)
 at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)
 at internal/main/run_main_module.js:17:47 {
 generatedMessage: true,
 code: 'ERR_ASSERTION',
 actual: [],
 expected: [],
 operator: 'notDeepStrictEqual'
}

There is a lot of stuff in stdout but GitHub Actions does not make copy/paste for large things easy. (It's entirely possible there is a way to make it easy, but I"m unfamiliar with the interface for the most part.) Here's how it starts:

[
 {
 id: 1,
 callFrame: {
 functionName: '(root)',
 scriptId: '0',
 url: '',
 lineNumber: -1,
 columnNumber: -1
 },
 hitCount: 0,
 children: [ 2, 3, 10, 19, 20, 38 ]
 },
 {
 id: 2,
 callFrame: {
 functionName: '(program)',
 scriptId: '0',
 url: '',
 lineNumber: -1,

[Trott]

Again on macOS CI today:

https://ci.nodejs.org/job/node-test-commit-osx/37895/nodes=osx1015/console

Details

00:23:31 not ok 3106 sequential/test-cpu-prof-worker-argv
00:23:31 ---
00:23:31 duration_ms: 0.821
00:23:31 severity: fail
00:23:31 exitcode: 1
00:23:31 stack: |-
00:23:31 
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00:23:31 },
00:23:31 hitCount: 0,
00:23:31 children: [ 51 ]
00:23:31 },
00:23:31 {
00:23:31 id: 51,
00:23:31 callFrame: {
00:23:31 functionName: 'readSync',
00:23:31 scriptId: '72',
00:23:31 url: 'node:fs',
00:23:31 lineNumber: 573,
00:23:31 columnNumber: 17
00:23:31 },
00:23:31 hitCount: 0,
00:23:31 children: [ 52 ]
00:23:31 },
00:23:31 {
00:23:31 id: 52,
00:23:31 callFrame: {
00:23:31 functionName: 'hidden',
00:23:31 scriptId: '11',
00:23:31 url: 'node:internal/errors',
00:23:31 lineNumber: 308,
00:23:31 columnNumber: 24
00:23:31 },
00:23:31 hitCount: 0,
00:23:31 children: [ 53 ]
00:23:31 },
00:23:31 {
00:23:31 id: 53,
00:23:31 callFrame: {
00:23:31 functionName: '',
00:23:31 scriptId: '17',
00:23:31 url: 'node:internal/validators',
00:23:31 lineNumber: 86,
00:23:31 columnNumber: 2
00:23:31 },
00:23:31 hitCount: 2,
00:23:31 positionTicks: [ [Object] ]
00:23:31 }
00:23:31 ]
00:23:31 node:assert:119
00:23:31 throw new AssertionError(obj);
00:23:31 ^
00:23:31 
00:23:31 AssertionError [ERR_ASSERTION]: Expected "actual" not to be strictly deep-equal to: []
00:23:31 at verifyFrames (/Users/iojs/build/workspace/node-test-commit-osx/nodes/osx1015/test/common/cpu-prof.js:34:10)
00:23:31 at Object.<anonymous> (/Users/iojs/build/workspace/node-test-commit-osx/nodes/osx1015/test/sequential/test-cpu-prof-worker-argv.js:37:3)
00:23:31 at Module._compile (node:internal/modules/cjs/loader:1108:14)
00:23:31 at Object.Module._extensions..js (node:internal/modules/cjs/loader:1137:10)
00:23:31 at Module.load (node:internal/modules/cjs/loader:973:32)
00:23:31 at Function.Module._load (node:internal/modules/cjs/loader:813:14)
00:23:31 at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:76:12)
00:23:31 at node:internal/main/run_main_module:17:47 {
00:23:31 generatedMessage: true,
00:23:31 code: 'ERR_ASSERTION',
00:23:31 actual: [],
00:23:31 expected: [],
00:23:31 operator: 'notDeepStrictEqual'
00:23:31 }
00:23:31 ...

[Trott]

Stress test: https://ci.nodejs.org/job/node-stress-single-test/208/

[Trott]

Stress test: https://ci.nodejs.org/job/node-stress-single-test/208/

Failed 5 times in 1000 runs on osx15 and 1 time in 1000 runs on osx14.

[Trott]

Saw it again today at https://ci.nodejs.org/job/node-test-commit-osx/38260/nodes=osx1014/console.

Details

00:16:59 not ok 3121 sequential/test-cpu-prof-worker-argv
00:17:00 ---
00:17:00 duration_ms: 0.426
00:17:00 severity: fail
00:17:00 exitcode: 1
00:17:00 stack: |-
00:17:00 
00:17:00 [
00:17:00 {
00:17:00 id: 1,
00:17:00 callFrame: {
00:17:00 functionName: '(root)',
00:17:00 scriptId: '0',
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00:17:00 columnNumber: -1
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00:17:00 hitCount: 0,
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00:17:00 },
00:17:00 hitCount: 1,
00:17:00 positionTicks: [ [Object] ]
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00:17:00 {
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00:17:00 callFrame: {
00:17:00 functionName: 'nativeModuleRequire',
00:17:00 scriptId: '9',
00:17:00 url: 'node:internal/bootstrap/loaders',
00:17:00 lineNumber: 302,
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00:17:00 },
00:17:00 hitCount: 0,
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00:17:00 scriptId: '9',
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00:17:00 lineNumber: 269,
00:17:00 columnNumber: 26
00:17:00 },
00:17:00 hitCount: 0,
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00:17:00 },
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00:17:00 hitCount: 0,
00:17:00 children: [ 10 ]
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00:17:00 scriptId: '9',
00:17:00 url: 'node:internal/bootstrap/loaders',
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00:17:00 },
00:17:00 hitCount: 1,
00:17:00 positionTicks: [ [Object] ]
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00:17:00 callFrame: {
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00:17:00 scriptId: '9',
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00:17:00 },
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00:17:00 scriptId: '9',
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00:17:00 functionName: 'nativeModuleRequire',
00:17:00 scriptId: '9',
00:17:00 url: 'node:internal/bootstrap/loaders',
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00:17:00 scriptId: '9',
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00:17:00 callFrame: {
00:17:00 functionName: 'nativeModuleRequire',
00:17:00 scriptId: '9',
00:17:00 url: 'node:internal/bootstrap/loaders',
00:17:00 lineNumber: 302,
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00:17:00 scriptId: '9',
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00:17:00 callFrame: {
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00:17:00 columnNumber: 26
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00:17:00 functionName: 'compileForInternalLoader',
00:17:00 scriptId: '9',
00:17:00 url: 'node:internal/bootstrap/loaders',
00:17:00 lineNumber: 269,
00:17:00 columnNumber: 26
00:17:00 },
00:17:00 hitCount: 0,
00:17:00 children: [ 42 ]
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00:17:00 {
00:17:00 id: 42,
00:17:00 callFrame: {
00:17:00 functionName: '',
00:17:00 scriptId: '88',
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00:17:00 columnNumber: 0
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00:17:00 hitCount: 0,
00:17:00 children: [ 43 ]
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00:17:00 {
00:17:00 id: 43,
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00:17:00 scriptId: '35',
00:17:00 url: 'node:internal/event_target',
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00:17:00 columnNumber: 26
00:17:00 },
00:17:00 hitCount: 1,
00:17:00 positionTicks: [ [Object] ]
00:17:00 },
00:17:00 {
00:17:00 id: 44,
00:17:00 callFrame: {
00:17:00 functionName: 'executeUserEntryPoint',
00:17:00 scriptId: '94',
00:17:00 url: 'node:internal/modules/run_main',
00:17:00 lineNumber: 68,
00:17:00 columnNumber: 30
00:17:00 },
00:17:00 hitCount: 0,
00:17:00 children: [ 45 ]
00:17:00 },
00:17:00 {
00:17:00 id: 45,
00:17:00 callFrame: {
00:17:00 functionName: 'Module._load',
00:17:00 scriptId: '70',
00:17:00 url: 'node:internal/modules/cjs/loader',
00:17:00 lineNumber: 747,
00:17:00 columnNumber: 23
00:17:00 },
00:17:00 hitCount: 0,
00:17:00 children: [ 46 ]
00:17:00 },
00:17:00 {
00:17:00 id: 46,
00:17:00 callFrame: {
00:17:00 functionName: 'Module.load',
00:17:00 scriptId: '70',
00:17:00 url: 'node:internal/modules/cjs/loader',
00:17:00 lineNumber: 960,
00:17:00 columnNumber: 32
00:17:00 },
00:17:00 hitCount: 0,
00:17:00 children: [ 47 ]
00:17:00 },
00:17:00 {
00:17:00 id: 47,
00:17:00 callFrame: {
00:17:00 functionName: 'Module._extensions..js',
00:17:00 scriptId: '70',
00:17:00 url: 'node:internal/modules/cjs/loader',
00:17:00 lineNumber: 1116,
00:17:00 columnNumber: 36
00:17:00 },
00:17:00 hitCount: 1,
00:17:00 positionTicks: [ [Object] ]
00:17:00 }
00:17:00 ]
00:17:00 node:assert:119
00:17:00 throw new AssertionError(obj);
00:17:00 ^
00:17:00 
00:17:00 AssertionError [ERR_ASSERTION]: Expected "actual" not to be strictly deep-equal to: []
00:17:00 at verifyFrames (/Users/iojs/build/workspace/node-test-commit-osx/nodes/osx1014/test/common/cpu-prof.js:34:10)
00:17:00 at Object.<anonymous> (/Users/iojs/build/workspace/node-test-commit-osx/nodes/osx1014/test/sequential/test-cpu-prof-worker-argv.js:37:3)
00:17:00 at Module._compile (node:internal/modules/cjs/loader:1108:14)
00:17:00 at Object.Module._extensions..js (node:internal/modules/cjs/loader:1137:10)
00:17:00 at Module.load (node:internal/modules/cjs/loader:973:32)
00:17:00 at Function.Module._load (node:internal/modules/cjs/loader:813:14)
00:17:00 at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:76:12)
00:17:00 at node:internal/main/run_main_module:17:47 {
00:17:00 generatedMessage: true,
00:17:00 code: 'ERR_ASSERTION',
00:17:00 actual: [],
00:17:00 expected: [],
00:17:00 operator: 'notDeepStrictEqual'
00:17:00 }
00:17:00 ...

[Trott]

@joyeecheung Based on the output, would you say that the test is valid but should be made more lenient? Or is there a bug somewhere (in Node.js or in the test or in a dependency)?

[joyeecheung]

@Trott Making the test more lenient SGTM, though it's difficult to say what parameters would be good for the CI. Maybe tuning the CPU_PROF_INTERVAL in the test down would help. It might also help to tune the FIB environment variable up so that the workload lasts longer, though that would lead to longer test running time.

[Trott]

This seems to not be failing on macOS in CI anymore (or at least not with noticeable frequency) but has been failing a lot in CI on FreeBSD 12.

• Confirm that a stress test on FreeBSD fails
• Try decreasing CPU_PROF_INTERVAL to see if that fixes it
• Try increasing FIB
• If the fixed test takes a long time to run, consider moving it to pummel

Of course, if that approach doesn't fix the test, then we'll have to add more things to try.

[Trott]

• Confirm that a stress test on FreeBSD fails

https://ci.nodejs.org/job/node-stress-single-test/324/

EDIT: 76 failures in 1000 runs.

[Trott]

• Try decreasing CPU_PROF_INTERVAL to see if that fixes it

Stress test with CPU_PROF_INTERVAL reduced from 50 to 32: https://ci.nodejs.org/job/node-stress-single-test/325/

EDIT: 98 failures so that seems to have made it worse, if anything.