SIGSEGV in System.Net.Quic.Functional.Tests #121575
Description
Seeing this on both ARM32 and x64 Alpine in my PR.
Discovering: System.Net.Quic.Functional.Tests (method display = ClassAndMethod, method display options = None)
Discovered: System.Net.Quic.Functional.Tests (found 142 of 153 test cases)
Starting: System.Net.Quic.Functional.Tests (parallel test collections = on [2 threads], stop on fail = off)
MsQuic supported and using 'libmsquic.so 2.4.5.0 (Unknown)' (OpenSSL).
System.Net.Quic.Tests.MsQuicPlatformDetectionTests.UnsupportedPlatforms_ThrowsPlatformNotSupportedException [SKIP]
Condition(s) not met: "IsQuicUnsupported"
[createdump] Gathering state for process 35 dotnet
[createdump] Crashing thread 0036 signal 11 (000b)
[createdump] Writing crash report to file /datadisks/disk1/dumps/coredump.35.dmp.crashreport.json
[createdump] Crash report successfully written
[createdump] Writing minidump with heap to file /datadisks/disk1/dumps/coredump.35.dmp
[createdump] Written 156844032 bytes (38292 pages) to core file
[createdump] Target process is alive
[createdump] Dump successfully written in 332ms
waitpid() returned successfully (wstatus 00000000) WEXITSTATUS 0 WTERMSIG 0
./RunTests.sh: line 178: 35 Segmentation fault (core dumped) "$RUNTIME_PATH/dotnet" exec --runtimeconfig System.Net.Quic.Functional.Tests.runtimeconfig.json --depsfile System.Net.Quic.Functional.Tests.deps.json xunit.console.dll System.Net.Quic.Functional.Tests.dll -xml testResults.xml -nologo -nocolor -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing $RSP_FILE
/root/helix/work/workitem/e
----- end Thu Nov 13 08:00:33 UTC 2025 ----- exit code 139 ----------------------------------------------------------
exit code 139 means SIGSEGV Illegal memory access. Deref invalid pointer, overrunning buffer, stack overflow etc. Core dumped.
Build Information
Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1201719
Build error leg or test failing: System.Net.Quic.Functional.Tests.WorkItemExecution
Pull request: #121570
Error Message
Fill the error message using step by step known issues guidance.
{
"ErrorMessage": ["System.Net.Quic.Functional.Tests", "exit code 139"],
"ErrorPattern": "",
"BuildRetry": false,
"ExcludeConsoleLog": false
}Known issue validation
Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1201719
Error message validated: [System.Net.Quic.Functional.Tests exit code 139]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 11/13/2025 10:44:21 AM UTC
Report
Summary
| 24-Hour Hit Count | 7-Day Hit Count | 1-Month Count |
|---|---|---|
| 0 | 25 | 74 |