[browser][MT] MutexTests - operation does not support unaligned accesses

[pavelsavara]

Error Blob

{
  "ErrorMessage": "RuntimeError: operation does not support unaligned accesses",
  "BuildRetry": false,
  "ErrorPattern": "",
  "ExcludeConsoleLog": false
}

Reproduction Steps

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=556904&view=logs&jobId=63c2d0c8-fec2-5788-81c8-f3ac95e8841f

[15:41:29] warn: worker sent an error! http://127.0.0.1:46177/_framework/dotnet.native.worker.js:1: Uncaught RuntimeError: operation does not support unaligned accesses
[15:41:29] fail: MONO_WASM: Error
                     at He (http://127.0.0.1:46177/_framework/dotnet.js:3:19726)
                     at e (http://127.0.0.1:46177/_framework/dotnet.js:3:33700)
                     at http://127.0.0.1:46177/_framework/dotnet.js:3:33845
[15:41:29] fail: Error: [MONO] /__w/1/s/src/mono/mono/mini/interp/transform.c:1136 <disabled>
                     at Rt (http://127.0.0.1:46177/_framework/dotnet.runtime.js:3:13935)
                     at ud (http://127.0.0.1:46177/_framework/dotnet.runtime.js:3:208105)
                     at wasm_trace_logger (http://127.0.0.1:46177/_framework/dotnet.native.wasm:wasm-function[199]:0x148b6)
                     at eglib_log_adapter (http://127.0.0.1:46177/_framework/dotnet.native.wasm:wasm-function[683]:0x48f8e)
                     at monoeg_g_logv_nofree (http://127.0.0.1:46177/_framework/dotnet.native.wasm:wasm-function[604]:0x4739b)
                     at monoeg_g_log (http://127.0.0.1:46177/_framework/dotnet.native.wasm:wasm-function[606]:0x4745e)
                     at monoeg_g_log_disabled (http://127.0.0.1:46177/_framework/dotnet.native.wasm:wasm-function[607]:0x47491)
                     at store_local (http://127.0.0.1:46177/_framework/dotnet.native.wasm:wasm-function[410]:0x3467b)
                     at generate_code (http://127.0.0.1:46177/_framework/dotnet.native.wasm:wasm-function[407]:0x2d6da)
                     at mono_interp_transform_method (http://127.0.0.1:46177/_framework/dotnet.native.wasm:wasm-function[451]:0x39737)
[15:41:29] fail: [out of order message from the browser]: http://127.0.0.1:46177/_framework/dotnet.native.worker.js 0 Uncaught RuntimeError: operation does not support unaligned accesses

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=556904
Error message validated: RuntimeError: operation does not support unaligned accesses
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 2/7/2024 4:03:46 PM UTC

Report

Build	Definition	Test	Pull Request
1047881	dotnet/runtime	WasmTestOnChrome-MT-System.Private.Xml.Tests.WorkItemExecution
1045761	dotnet/runtime	WasmTestOnChrome-MT-System.IO.FileSystem.Tests.WorkItemExecution	#115537
1042913	dotnet/runtime	WasmTestOnChrome-MT-System.Runtime.CompilerServices.Unsafe.Tests.WorkItemExecution	#115576

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	0	3

Tagging subscribers to 'arch-wasm': @lewing
See info in area-owners.md if you want to be subscribed.

Issue Details

---

System.Threading.Tests.MutexTests

[15:41:29] warn: worker sent an error! http://127.0.0.1:46177/_framework/dotnet.native.worker.js:1: Uncaught RuntimeError: operation does not support unaligned accesses
[15:41:29] fail: MONO_WASM: Error
                     at He (http://127.0.0.1:46177/_framework/dotnet.js:3:19726)
                     at e (http://127.0.0.1:46177/_framework/dotnet.js:3:33700)
                     at http://127.0.0.1:46177/_framework/dotnet.js:3:33845
[15:41:29] fail: Error: [MONO] /__w/1/s/src/mono/mono/mini/interp/transform.c:1136 <disabled>
                     at Rt (http://127.0.0.1:46177/_framework/dotnet.runtime.js:3:13935)
                     at ud (http://127.0.0.1:46177/_framework/dotnet.runtime.js:3:208105)
                     at wasm_trace_logger (http://127.0.0.1:46177/_framework/dotnet.native.wasm:wasm-function[199]:0x148b6)
                     at eglib_log_adapter (http://127.0.0.1:46177/_framework/dotnet.native.wasm:wasm-function[683]:0x48f8e)
                     at monoeg_g_logv_nofree (http://127.0.0.1:46177/_framework/dotnet.native.wasm:wasm-function[604]:0x4739b)
                     at monoeg_g_log (http://127.0.0.1:46177/_framework/dotnet.native.wasm:wasm-function[606]:0x4745e)
                     at monoeg_g_log_disabled (http://127.0.0.1:46177/_framework/dotnet.native.wasm:wasm-function[607]:0x47491)
                     at store_local (http://127.0.0.1:46177/_framework/dotnet.native.wasm:wasm-function[410]:0x3467b)
                     at generate_code (http://127.0.0.1:46177/_framework/dotnet.native.wasm:wasm-function[407]:0x2d6da)
                     at mono_interp_transform_method (http://127.0.0.1:46177/_framework/dotnet.native.wasm:wasm-function[451]:0x39737)
[15:41:29] fail: [out of order message from the browser]: http://127.0.0.1:46177/_framework/dotnet.native.worker.js 0 Uncaught RuntimeError: operation does not support unaligned accesses

Log

Author:	pavelsavara
Assignees:	-
Labels:	arch-wasm, area-VM-threading-mono, os-browser
Milestone:	9.0.0

[pavelsavara]

cc @kg @BrzVlad

[pavelsavara]

here is one more

[11:01:33] info: [2023-12-17T11:01:33.762Z] [PASS] System.Threading.Tests.MutexTests.OpenExisting(name: "ada314549e444c7da1055fc1741a507e")
[11:01:33] warn: worker sent an error! http://127.0.0.1:38575/_framework/dotnet.native.worker.js:1: Uncaught RuntimeError: operation does not support unaligned accesses
[11:01:33] fail: MONO_WASM: Error
                     at Qe (http://127.0.0.1:38575/_framework/dotnet.js:3:19749)
                     at e (http://127.0.0.1:38575/_framework/dotnet.js:3:33736)
                     at http://127.0.0.1:38575/_framework/dotnet.js:3:33881
[11:01:33] warn: MONO_WASM: mono_wasm_exit failed {}
[11:01:33] fail: [out of order message from the browser]: http://127.0.0.1:38575/_framework/dotnet.native.worker.js 0 Uncaught RuntimeError: operation does not support unaligned accesses

Log

[kg]

I don't see any atomics in store_local, so the stack trace must be wrong

[pavelsavara]

Maybe it's V8 message ?
https://github.com/dotnet/node/blob/df373ca399657e5522321152c79ec08954c9b41b/deps/v8/src/common/message-template.h#L592

https://github.com/dotnet/node/blob/df373ca399657e5522321152c79ec08954c9b41b/deps/v8/src/wasm/baseline/liftoff-compiler.cc#L2882

[kg]

Ah, if so we'd need to run it under a debugger and hope it will pause there

[pavelsavara]

Perhaps Invalid atomic access index is related ?

[13:00:09] info: [2023-12-21T13:00:09.376Z] [PASS] System.Threading.Tasks.Sources.Tests.ManualResetValueTaskSourceTests.TaskScheduler_CaptureIfRequested(runContinuationsAsynchronously: False, captureTaskScheduler: True, setBeforeOnCompleted: True)
[13:00:09] warn: worker sent an error! http://127.0.0.1:44357/_framework/dotnet.native.worker.js:1: 
Uncaught RangeError: Invalid atomic access index
[13:00:09] fail: MONO_WASM: Error
                     at Qe (http://127.0.0.1:44357/_framework/dotnet.js:3:19734)
                     at e (http://127.0.0.1:44357/_framework/dotnet.js:3:33726)
                     at http://127.0.0.1:44357/_framework/dotnet.js:3:33871

Log

[12:54:20] info: [2023-12-21T12:54:20.235Z] [PASS] Microsoft.Extensions.Logging.Console.Test.JsonConsoleFormatterTests.Log_StateAndScopeContainsSpecialCaseValue_SerializesValueAsExpected(value: 1, expectedJsonValue: "1")
[12:54:20] warn: worker sent an error! http://127.0.0.1:45013/_framework/dotnet.native.worker.js:1: Uncaught RangeError: Invalid atomic access index
[12:54:20] fail: MONO_WASM: Error
                     at Qe (http://127.0.0.1:45013/_framework/dotnet.js:3:19734)
                     at e (http://127.0.0.1:45013/_framework/dotnet.js:3:33726)
                     at http://127.0.0.1:45013/_framework/dotnet.js:3:33871
[12:54:20] info: WASM EXIT 1

Log2

[pavelsavara]

@lambdageek any thoughts ?

[lambdageek]

It's either us or emscripten libc, right?

Maybe we can instrument all our atomic ops with an alignment check?