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[wasm] Out of memory exception in System.Xml.XmlWriterApiTests.TCFullEndElement tests #110090

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carlossanlop opened this issue Nov 22, 2024 · 5 comments
Open

[wasm] Out of memory exception in System.Xml.XmlWriterApiTests.TCFullEndElement tests #110090

carlossanlop opened this issue Nov 22, 2024 · 5 comments
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@oroztocil
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arch-wasm WebAssembly architecture area-System.Xml Known Build Error Use this to report build issues in the .NET Helix tab os-browser Browser variant of arch-wasm os-linux Linux OS (any supported distro) test-failure untriaged New issue has not been triaged by the area owner

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@carlossanlop
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carlossanlop commented Nov 22, 2024 •
edited by build-analysis bot
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Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=876444
Build error leg or test failing: System.Xml.XmlWriterApiTests.TCFullEndElement

Error Message

{
  "ErrorMessage" : [ "[FAIL] System.Xml.XmlWriterApiTests.TCFullEndElement", "System.OutOfMemoryException : Out of memory" ],
  "BuildRetry" : false,
  "ExcludeConsoleLog" : false
}
[16:01:27] info: Initializing dotnet version 10.0.0-ci commit hash da69f3e465c6f3e140856405ae3016aec94b63af
[16:01:28] info: Using threadless Xunit runner
[16:01:28] info: Discovering: System.Private.Xml.Tests.dll (method display = ClassAndMethod, method display options = None)
[16:01:31] info: Discovered:  System.Private.Xml.Tests.dll (found 4763 of 4823 test cases)
[16:01:31] info: Starting:    System.Private.Xml.Tests.dll
[16:03:45] info: [FAIL] System.Xml.XmlWriterApiTests.TCFullEndElement+TCWriteValue+TCGlobalization.var_1(utils: XmlWriterUtils { Async = True, WriterType = UTF8Writer })
[16:03:45] info: System.OutOfMemoryException : Out of memory
[16:03:45] info:    at System.String.Concat(ReadOnlySpan`1 str0, ReadOnlySpan`1 str1)
[16:03:45] info:    at System.Xml.XmlWriterApiTests.TCFullEndElement.TCWriteValue.TCGlobalization.var_1(XmlWriterUtils utils)
[16:03:45] info:    at System.Object.InvokeStub_TCGlobalization.var_1(Object , Span`1 )
[16:03:45] info:    at System.Reflection.MethodBaseInvoker.InvokeWithOneArg(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
[16:03:45] info: [FAIL] System.Xml.XmlWriterApiTests.TCFullEndElement+TCWriteValue+TCGlobalization.var_1(utils: XmlWriterUtils { Async = False, WriterType = UnicodeWriter })
[16:03:45] info: System.OutOfMemoryException : Out of memory
[16:03:45] info:    at System.Xml.XmlEncodedRawTextWriter..ctor(Stream stream, XmlWriterSettings settings)
[16:03:45] info:    at System.Xml.XmlWriterSettings.CreateWriter(Stream output)
[16:03:45] info:    at XmlCoreTest.Common.WriterFactory.CreateWriterImpl()
[16:03:45] info:    at XmlCoreTest.Common.WriterFactory.CreateWriter(String fileName)
[16:03:45] info:    at System.Xml.XmlWriterApiTests.XmlWriterUtils.CreateWriter()
[16:03:45] info:    at System.Xml.XmlWriterApiTests.TCFullEndElement.TCWriteValue.TCGlobalization.var_1(XmlWriterUtils utils)
[16:03:45] info:    at System.Object.InvokeStub_TCGlobalization.var_1(Object , Span`1 )
[16:03:45] info:    at System.Reflection.MethodBaseInvoker.InvokeWithOneArg(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
[16:03:45] info: [FAIL] System.Xml.XmlWriterApiTests.TCFullEndElement+TCWriteValue+TCGlobalization.var_1(utils: XmlWriterUtils { Async = True, WriterType = UnicodeWriter })
[16:03:45] info: System.OutOfMemoryException : Out of memory
[16:03:45] info:    at System.Xml.XmlEncodedRawTextWriter..ctor(Stream stream, XmlWriterSettings settings)
[16:03:45] info:    at System.Xml.XmlWriterSettings.CreateWriter(Stream output)
[16:03:45] info:    at XmlCoreTest.Common.XmlWriterAsync.Create(Stream output, XmlWriterSettings settings)
[16:03:45] info:    at XmlCoreTest.Common.WriterFactory.CreateWriterImpl()
[16:03:45] info:    at XmlCoreTest.Common.WriterFactory.CreateWriter(String fileName)
[16:03:45] info:    at System.Xml.XmlWriterApiTests.XmlWriterUtils.CreateWriter()
[16:03:45] info:    at System.Xml.XmlWriterApiTests.TCFullEndElement.TCWriteValue.TCGlobalization.var_1(XmlWriterUtils utils)
[16:03:45] info:    at System.Object.InvokeStub_TCGlobalization.var_1(Object , Span`1 )
[16:03:45] info:    at System.Reflection.MethodBaseInvoker.InvokeWithOneArg(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
[16:03:45] info: [FAIL] System.Xml.XmlWriterApiTests.TCFullEndElement+TCWriteValue+TCGlobalization.var_1(utils: XmlWriterUtils { Async = False, WriterType = CustomWriter })
[16:03:45] info: System.OutOfMemoryException : Out of memory
[16:03:45] info:    at System.String.Concat(ReadOnlySpan`1 str0, ReadOnlySpan`1 str1)
[16:03:45] info:    at System.Xml.XmlWriterApiTests.TCFullEndElement.TCWriteValue.TCGlobalization.var_1(XmlWriterUtils utils)
[16:03:45] info:    at System.Object.InvokeStub_TCGlobalization.var_1(Object , Span`1 )
[16:03:45] info:    at System.Reflection.MethodBaseInvoker.InvokeWithOneArg(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=876444
Error message validated: [[FAIL] System.Xml.XmlWriterApiTests.TCFullEndElement System.OutOfMemoryException : Out of memory]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 11/22/2024 7:17:35 PM UTC

Report

Build Definition Test Pull Request
955535 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #112661
955558 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112642
955508 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #111791
955212 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112404
955023 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #112647
954896 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112513
954840 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112642
954758 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112625
954739 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112638
954715 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #111505
954697 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #111791
954672 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #112637
954626 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #111706
954607 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112567
954430 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112567
954370 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #112632
954215 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #112624
954009 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution
953855 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112606
953704 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #112606
953693 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112604
953676 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution
953489 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution
953425 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112513
953196 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112590
953143 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112404
953058 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112547
952940 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112352
952693 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #110622
952576 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112357
952457 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #112404
951697 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #111910
952341 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution
952098 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112547
951967 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #110622
951942 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #111759
951805 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112372
951635 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112263
951510 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #112496
951332 dotnet/runtime WasmTestOnChrome-MT-System.Private.Xml.Tests.WorkItemExecution #112295
951286 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #110622
951018 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #112496
950206 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112440
950270 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #112372
949904 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112352
949384 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #112345
949175 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112391
949094 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #112384
948979 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #111564
948832 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112450
948349 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112417
948693 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution
948649 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #111934
948462 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #110416
948253 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112383
948145 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #112345
947934 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112357
947912 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112350
947911 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution
947838 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #98643
947753 dotnet/runtime WasmTestOnChrome-MT-System.Private.Xml.Tests.WorkItemExecution #112337
947411 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #111759
947282 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112345
947182 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #112256
946748 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #111706
946582 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #111539
946513 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112034
946410 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112345
946389 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution
946332 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112342
946244 dotnet/runtime WasmTestOnChrome-MT-System.Private.Xml.Tests.WorkItemExecution #112338
946326 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #111610
945947 dotnet/runtime WasmTestOnChrome-MT-System.Private.Xml.Tests.WorkItemExecution
945677 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112313
945663 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #111598
945627 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112309
945565 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112295
945541 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112256
945512 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112307
945455 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112302
945459 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112306
945391 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112298
945281 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution
945250 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #111723
945210 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #112260
944895 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112256
944842 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #107819
944584 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #111759
944650 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution
944503 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112263
944497 dotnet/runtime WasmTestOnChrome-MT-System.Private.Xml.Tests.WorkItemExecution #112206
944491 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112282
943160 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #110622
944315 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #112232
944205 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112199
944114 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #112232
943896 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112260
943519 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112223
943428 dotnet/runtime WasmTestOnChrome-ST-System.Private.Xml.Tests.WorkItemExecution #112209
943321 dotnet/runtime WasmTestOnFirefox-ST-System.Private.Xml.Tests.WorkItemExecution #111642
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@carlossanlop carlossanlop added arch-wasm WebAssembly architecture area-System.Xml Known Build Error Use this to report build issues in the .NET Helix tab os-browser Browser variant of arch-wasm os-linux Linux OS (any supported distro) test-failure labels Nov 22, 2024
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Tagging subscribers to 'arch-wasm': @lewing
See info in area-owners.md if you want to be subscribed.

@dotnet-policy-service dotnet-policy-service bot added the untriaged New issue has not been triaged by the area owner label Nov 22, 2024
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Tagging subscribers to this area: @dotnet/area-system-xml
See info in area-owners.md if you want to be subscribed.

@pavelsavara pavelsavara mentioned this issue Jan 27, 2025
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@akoeplinger
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FWIW I've also seen this test OOM on Android:

 02-18 08:52:43.243 22483 22563 I DOTNET  : 	[FAIL] System.Xml.XmlWriterApiTests.TCFullEndElement+TCWriteValue+TCGlobalization.var_1(utils: XmlWriterUtils { Async = False, WriterType = UnicodeWriter })
 02-18 08:52:43.243 22483 22563 I DOTNET  : System.OutOfMemoryException : Insufficient memory to continue the execution of the program.
 02-18 08:52:43.243 22483 22563 I DOTNET  :    at System.String.Concat(ReadOnlySpan`1 str0, ReadOnlySpan`1 str1)
 02-18 08:52:43.243 22483 22563 I DOTNET  :    at System.Xml.XmlWriterApiTests.TCFullEndElement.TCWriteValue.TCGlobalization.var_1(XmlWriterUtils utils) in /_/src/libraries/System.Private.Xml/tests/Writers/XmlWriterApi/TCFullEndElement.cs:line 6313
 02-18 08:52:43.243 22483 22563 I DOTNET  :    at System.Object.InvokeStub_TCGlobalization.var_1(Object , Span`1 )
 02-18 08:52:43.243 22483 22563 I DOTNET  :    at System.Reflection.MethodBaseInvoker.InvokeWithOneArg(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)

The code looks suspect:

runtime/src/libraries/System.Private.Xml/tests/Writers/XmlWriterApi/TCFullEndElement.cs

Lines 6309 to 6313 in c37cfcc

string UniStr = "";
using (XmlWriter w = utils.CreateWriter())
{
for (char ch = '\ue000'; ch < '\ufffe'; ch++)
UniStr += ch;

The loop iterates 8190 times and will create a new (longer) string each time...

@oroztocil
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@akoeplinger Thanks for the heads up. This test is clearly written inefficiently. However, it should still allocate less than 100 megabytes which I would not expect to cause OOM exception by itself, no?

@akoeplinger
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the test is an xunit Theory using XmlWriterInlineData for the data so it's probably executed multiple times.

I also saw that e.g. the Base64_1 test has a similar issue so it might add up.

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arch-wasm WebAssembly architecture area-System.Xml Known Build Error Use this to report build issues in the .NET Helix tab os-browser Browser variant of arch-wasm os-linux Linux OS (any supported distro) test-failure untriaged New issue has not been triaged by the area owner
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