Build Information
Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1365474
Build error leg or test failing: System.Runtime.Tests.WorkItemExecution
Pull request: #126428
Error Message
SIGSEGV crash during System.Runtime.Tests execution on ARM64 Linux (azurelinux.3.arm64.open). The test process crashed with signal 11 (illegal memory access) early in test execution, before any test results were produced. The crash dump shows hundreds of unsymbolized frames, indicating a likely JIT or GC bug on ARM64.
{
"ErrorMessage": ["Discovering: System.Runtime.Tests","exit code 139"],
"BuildRetry": false,
"ExcludeConsoleLog": false
}Stack trace
[createdump] Gathering state for process 5962 dotnet
[createdump] Crashing thread 1778 signal 11 (000b)
[createdump] Writing crash report to file /datadisks/disk1/dumps/coredump.5962.dmp.crashreport.json
[createdump] Crash report successfully written
[createdump] Writing minidump with heap to file /datadisks/disk1/dumps/coredump.5962.dmp
[createdump] Written 528019456 bytes (128911 pages) to core file
[createdump] Target process is alive
[createdump] Dump successfully written in 913ms
waitpid() returned successfully (wstatus 00000000) WEXITSTATUS 0 WTERMSIG 0
./RunTests.sh: line 175: 5962 Segmentation fault (core dumped) "$RUNTIME_PATH/dotnet" exec --runtimeconfig System.Runtime.Tests.runtimeconfig.json --depsfile System.Runtime.Tests.deps.json xunit.console.dll System.Runtime.Tests.dll -xml testResults.xml -nologo -nocolor -notrait category=AdditionalTimezoneChecks -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing $RSP_FILE
/datadisks/disk1/work/997F0892/w/A0DB093F/e
----- end Fri Apr 3 04:27:57 PM UTC 2026 ----- exit code 139 ----------------------------------------------------------
exit code 139 means SIGSEGV Illegal memory access. Deref invalid pointer, overrunning buffer, stack overflow etc. Core dumped.
ulimit -c value: unlimited
cat /proc/sys/kernel/core_pattern: /datadisks/disk1/dumps/core.%u.%p
cat /proc/sys/kernel/core_uses_pid: 1
cat: /proc/sys/kernel/coredump_filter: No such file or directory
cat /proc/sys/kernel/coredump_filter:
Looking around for any Linux dumps...
Known issue validation
Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1365474
Error message validated: [exit code 139]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 4/3/2026 9:10:56 PM UTC
Report
Summary
| 24-Hour Hit Count |
7-Day Hit Count |
1-Month Count |
| 8 |
8 |
8 |
Known issue validation
Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1365474
Error message validated: [Discovering: System.Runtime.Tests exit code 139]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 4/4/2026 1:32:38 AM UTC
Report
Summary
| 24-Hour Hit Count |
7-Day Hit Count |
1-Month Count |
| 8 |
8 |
8 |
Report
Summary
| 24-Hour Hit Count |
7-Day Hit Count |
1-Month Count |
| 11 |
11 |
11 |
Build Information
Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1365474
Build error leg or test failing: System.Runtime.Tests.WorkItemExecution
Pull request: #126428
Error Message
SIGSEGV crash during System.Runtime.Tests execution on ARM64 Linux (
azurelinux.3.arm64.open). The test process crashed with signal 11 (illegal memory access) early in test execution, before any test results were produced. The crash dump shows hundreds of unsymbolized frames, indicating a likely JIT or GC bug on ARM64.{ "ErrorMessage": ["Discovering: System.Runtime.Tests","exit code 139"], "BuildRetry": false, "ExcludeConsoleLog": false }Stack trace
Known issue validation
Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1365474
Error message validated:
[exit code 139]Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 4/3/2026 9:10:56 PM UTC
Report
Summary
Known issue validation
Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1365474
Error message validated:
[Discovering: System.Runtime.Tests exit code 139]Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 4/4/2026 1:32:38 AM UTC
Report
Summary
Report
Summary