Test failure: System.Security.Cryptography.Tests.HmacSha3_384Tests.HmacSha3_384_Stream_MultipleOf4096_Async

[VincentBu]

Failed in: runtime-coreclr libraries-pgo 20260830.1

Failed tests:

net11.0-linux-Release-x64-jitosr_stress_random-AzureLinux.3.Amd64.Open
- System.Security.Cryptography.Tests.HmacSha3_384Tests.HmacSha3_384_Stream_MultipleOf4096_Async
- System.Security.Cryptography.Tests.HmacSha1Tests.HmacSha1_Stream_NotMultipleOf4096_Async

Error message:

System.ArgumentNullException : Value cannot be null. (Parameter 'source')

Stack trace:

at System.ArgumentNullException.Throw(String paramName) in /_/src/libraries/System.Private.CoreLib/src/System/ArgumentNullException.cs:line 98
   at System.ArgumentNullException.ThrowIfNull(Object argument, String paramName) in /_/src/libraries/System.Private.CoreLib/src/System/ArgumentNullException.cs:line 59
   at System.Security.Cryptography.HMACStatic`1.HashDataAsync(ReadOnlyMemory`1 key, Stream source, CancellationToken cancellationToken) in /_/src/libraries/System.Security.Cryptography/src/System/Security/Cryptography/HMACStatic.cs:line 122
   at System.Security.Cryptography.Tests.HmacTests`1.VerifyHashDataStreamAllocatingAsync(Byte[] key, Stream stream, String output, Boolean memoryKey) in /_/src/libraries/System.Security.Cryptography/tests/HmacTests.cs:line 239
   at System.Security.Cryptography.Tests.HmacTests`1.VerifyRepeatingAsync(String input, Int32 repeatCount, String hexKey, String output) in /_/src/libraries/System.Security.Cryptography/tests/HmacTests.cs:line 124
   at System.Security.Cryptography.Tests.HmacSha3_384Tests.HmacSha3_384_Stream_MultipleOf4096_Async() in /_/src/libraries/System.Security.Cryptography/tests/HmacSha3_384Tests.cs:line 227
--- End of stack trace from previous location ---

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[vcsjones]

I geniunely do not see how this is possible. We instantiate a stream, pass it down but it became null.

1. Stream is instantiated here

runtime/src/libraries/System.Security.Cryptography/tests/HmacTests.cs

Lines 122 to 124 in 0b2926a

	using (Stream stream = new DataRepeatingStream(input, repeatCount))
	{
	await VerifyHashDataStreamAllocatingAsync(key, stream, output, memoryKey: true);

2. Gets passed here

   runtime/src/libraries/System.Security.Cryptography/tests/HmacTests.cs

   Lines 232 to 239 in 0b2926a

   	protected async Task VerifyHashDataStreamAllocatingAsync(byte[] key, Stream stream, string output, bool memoryKey)
   	{
   	byte[] expected = ByteUtils.HexToByteArray(output);
   	byte[] hmac;
   	if (memoryKey)
   	{
   	hmac = await HashDataOneShotAsync(new ReadOnlyMemory<byte>(key), stream, cancellationToken: default);

3. Calls static generic here

   runtime/src/libraries/System.Security.Cryptography/tests/HmacSha3_384Tests.cs

   Lines 56 to 59 in 0b2926a

   	protected override ValueTask<byte[]> HashDataOneShotAsync(
   	ReadOnlyMemory<byte> key,
   	Stream source,
   	CancellationToken cancellationToken) => HMACSHA3_384.HashDataAsync(key, source, cancellationToken);

4. Is somehow null here

   runtime/src/libraries/System.Security.Cryptography/src/System/Security/Cryptography/HMACStatic.cs

   Line 122 in 0b2926a

   ArgumentNullException.ThrowIfNull(source);

[vcsjones]

I am tentatively marking this as a possible codegen (OSR?) related failure since I cannot see how this happens otherwise.

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