`parallel/test-snapshot-reproducible` fails when ASLR is enabled
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Evaluación
- Dificultad
- 4/5
- Tiempo estimado
- 3-5 días
- Aptitud para principiantes
- 35/100
- Tipo de issue
- Error
- Claridad
- Necesita aclaración
- Estado de actividad
- Tranquilo
- Stack tecnológico
- javascript, linux, node.js
- Área
- operating-systems, testing-qa
Línea de trabajo
Empieza con test/parallel/test-snapshot-reproducible.js, especialmente con la aserción de la línea 47. Reproduce el problema con ./configure && make y con Linux ASLR establecido en 1 o 2; después, compara el snapshot generado con ASLR deshabilitado. Se considera terminado cuando el fallo se haya corregido o se haya acotado a una causa documentada específica de V8 o del entorno, con un siguiente paso claro.
Escrito por el modelo de indexación a partir del texto del issue.
Descripción
Testing main on linux:
# sysctl -w kernel.randomize_va_space=2
$ ./configure && make && ./node test/parallel/test-snapshot-reproducible.js
node:internal/assert/utils:146
throw error;
^
AssertionError [ERR_ASSERTION]: Expected values to be strictly deep-equal:
+ actual - expected
... Skipped lines
[
'#include <cstddef>',
'#include "env.h"',
'#include "node_snapshot_builder.h"',
'#include "v8.h"',
...
'namespace node {',
+ 'static const char v8_snapshot_blob_data[] = {4,0,0,0,1,0,0,0,43,108,-20,-8,-43,-25,-94,-55,49,52,46,54,46,50,48,50,46,51,52,45,110,111,100,101,46,50,49,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0',
- 'static const char v8_snapshot_blob_data[] = {4,0,0,0,1,0,0,0,-99,103,75,7,-43,-25,-94,-55,49,52,46,54,46,50,48,50,46,51,52,45,110,111,100,101,46,50,49,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0',
'0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,16,10,23,0,64,8,25,0,72,114,29,0,8,107,30,0,-120,98,31,0,-40,88,32,0,-85,6,-34,-64,-96,9,23,0,-83,24,96,0,0,0,0,86,0,0,0,96,0,0,0,0, // 1',
'0,0,0,0,96,0,0,0,0,0,0,0,0,96,0,0,0,0,-53,1,0,0,96,0,0,0,0,-84,1,0,0,96,0,0,0,0,-64,2,0,0,96,0,0,0,0,0,0,0,0,96,0,0,0,0,-30,0,0,0,11,5,24,98,0,2, // 2',
'5,24,34,1,2,5,24,-30,1,2,5,24,-94,2,2,5,24,98,3,2,5,24,34,4,2,5,24,-30,4,2,5,24,-94,5,2,5,24,98,6,2,5,24,34,7,2,5,24,-30,7,2,5,24,-94,8,2,5,24,98,9,2,1,76,7,101, // 3',
'15,69,64,97,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,64,98,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,64,96,0,0,0,0,0,0,0,0,7,-123,2,64,96,0,0,0, // 4',
'0,8,0,0,0,-127,0,91,64,1,20,83,69,97,0,0,0,0,96,0,0,0,0,0,0,0,1,0,0,0,93,1,20,83,69,97,0,0,0,0,96,0,0,0,0,0,0,0,1,0,0,0,93,1,20,83,69,97,0,0,0,0,96,0, // 5',
...
'26,-87,22,26,-11,27,26,93,28,26,101,28,26,105,34,26,69,37,26,73,37,26,77,37,26,81,37,26,85,37,26,89,37,26,93,37,26,97,37,26,101,37,26,-87,43,26,-83,43,26,-71,43,1,20,86,98,0,0,0,0,3,0,0,0,0, // 42996',
+ '0,0,0,1,0,0,0,0,0,0,0,14,0,0,0,64,91,31,0,6,-71,2,5,24,66,66,4,4,8,95,4,73,33,11,15,0,-3,15,0,8,6,0,0,-3,15,4,96,6,-86,-127,-107,44,127,0,0,24,0,0,0,0,0,0,0,47, // 42997',
+ '0,0,0,0,0,0,0,0,-107,26,0,8,8,0,0,-107,26,4,64,8,-102,-74,95,5,0,0,0,16,0,0,0,0,0,0,0,0,-99,39,0,8,2,0,0,-99,39,4,-64,2,-102,-74,95,5,0,0,0,48,0,0,0,0,0,0,0,51, // 42998',
+ '0,0,0,0,0,0,0,52,0,0,0,0,0,0,0,53,0,0,0,0,0,0,0,54,0,0,0,0,0,0,0,0,-67,49,0,8,7,0,0,-67,49,4,64,7,-102,-74,95,5,0,0,0,16,0,0,0,0,0,0,0,0,-123,56,0,8, // 42999',
+ '9,0,0,-123,56,4,64,9,-101,-74,95,5,0,0,0,16,0,0,0,0,0,0,0,0,-59,79,-128,32,32,0,0,0,0,0,0,0,0,-59,79,-108,32,37,0,0,0,0,0,0,0,0,-59,79,-104,32,38,0,0,0,0,0,0,0,0,-59, // 43000',
+ '79,-100,32,39,0,0,0,0,0,0,0,0,-91,108,0,8,3,0,0,-91,108,4,96,3,-86,-127,-107,44,127,0,0,24,0,0,0,0,0,0,0,43,0,0,0,0,0,0,0,0,-75,108,0,8,0,0,0,-75,108,4,96,0,-102,-74,95,5, // 43001',
+ '0,0,0,24,0,0,0,0,0,0,0,45,0,0,0,0,0,0,0,0,-67,108,0,8,5,0,0,-67,108,4,64,5,114,5,54,-2,85,0,0,16,0,0,0,0,0,0,0,0,-51,108,0,8,1,0,0,-51,108,4,96,1,-102,-74,95,5, // 43002',
- '0,0,0,1,0,0,0,0,0,0,0,14,0,0,0,64,91,31,0,6,-71,2,5,24,66,66,4,4,8,95,4,73,33,11,15,0,-3,15,0,8,6,0,0,-3,15,4,96,6,-86,33,30,70,127,0,0,24,0,0,0,0,0,0,0,47, // 42997',
- '0,0,0,0,0,0,0,0,-107,26,0,8,8,0,0,-107,26,4,64,8,36,-106,100,5,0,0,0,16,0,0,0,0,0,0,0,0,-99,39,0,8,2,0,0,-99,39,4,-64,2,36,-106,100,5,0,0,0,48,0,0,0,0,0,0,0,51, // 42998',
- '0,0,0,0,0,0,0,52,0,0,0,0,0,0,0,53,0,0,0,0,0,0,0,54,0,0,0,0,0,0,0,0,-67,49,0,8,7,0,0,-67,49,4,64,7,36,-106,100,5,0,0,0,16,0,0,0,0,0,0,0,0,-123,56,0,8, // 42999',
- '9,0,0,-123,56,4,64,9,36,-106,100,5,0,0,0,16,0,0,0,0,0,0,0,0,-59,79,-128,32,32,0,0,0,0,0,0,0,0,-59,79,-108,32,37,0,0,0,0,0,0,0,0,-59,79,-104,32,38,0,0,0,0,0,0,0,0,-59, // 43000',
- '79,-100,32,39,0,0,0,0,0,0,0,0,-91,108,0,8,3,0,0,-91,108,4,96,3,-86,33,30,70,127,0,0,24,0,0,0,0,0,0,0,43,0,0,0,0,0,0,0,0,-75,108,0,8,0,0,0,-75,108,4,96,0,36,-106,100,5, // 43001',
- '0,0,0,24,0,0,0,0,0,0,0,45,0,0,0,0,0,0,0,0,-67,108,0,8,5,0,0,-67,108,4,64,5,-52,-33,6,76,86,0,0,16,0,0,0,0,0,0,0,0,-51,108,0,8,1,0,0,-51,108,4,96,1,36,-106,100,5, // 43002',
'0,0,0,24,0,0,0,0,0,0,0,57,0,0,0,0,0,0,0,11,10,10,10,10',
'};',
'static const int v8_snapshot_blob_size = 2752216;',
'static const uint8_t vm_cache_data[] = {171,6,222,192,82,189,255,151,217,50,0,32,97,100,152,163,213,231,162,201,96,21,0,0,0,0,0,0,0,0,0,0,1,36,81,3,109,1,7,196,96,0,0,0,0,151,2,0,0,1,8,7,33,15,4,4,33,3,112,7,181,1,122,0, // 0',
'0,0,0,205,0,0,0,2,4,6,0,179,5,156,36,26,100,22,64,26,76,26,68,26,64,23,220,3,14,0,22,203,2,22,80,26,60,22,112,27,216,3,14,0,22,104,22,203,2,26,124,27,168,9,14,0,22,143,7,26,68,26,76,26, // 1',
at Object.<anonymous> (/node/test/parallel/test-snapshot-reproducible.js:47:8)
at Module._compile (node:internal/modules/cjs/loader:1947:14)
at Object..js (node:internal/modules/cjs/loader:2087:10)
at Module.load (node:internal/modules/cjs/loader:1669:32)
at Module._load (node:internal/modules/cjs/loader:1450:12)
at wrapModuleLoad (node:internal/modules/cjs/loader:260:19)
at Module.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:154:5)
at node:internal/main/run_main_module:33:47 {
generatedMessage: true,
code: 'ERR_ASSERTION',
actual: [ <skipped> ],
expected: [ <skipped> ],
operator: 'deepStrictEqual',
diff: 'simple'
}
Node.js v27.0.0-pre
Reproducible locally with gcc 15.3.0 and 16.1.1.
The byteranges that differ are randomized so the exact bytes are different each time. Everything else seems to be consistent.
Completely disabling ASLR (setting kernel/randomize_va_space to 0) makes the test pass. Conservative ASLR (1) still breaks it.
Not exactly sure when this started (maybe some of v8 upgrades?) nor whether it can be fixed (maybe on v8 side?) nor what else causes this (test passes on CI so i assume there's additional factor to it).
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