[tests] System.Text.Json.Tests segfault, for `Libraries Test Run release coreclr OSX x64 Release`

[Anipik]

/tmp/helix/working/AFBC0A27/p/dotnet exec --runtimeconfig System.Text.Json.Tests.runtimeconfig.json --depsfile System.Text.Json.Tests.deps.json xunit.console.dll System.Text.Json.Tests.dll -xml testResults.xml -nologo -nocolor -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing 
popd
===========================================================================================================
/private/tmp/helix/working/AFBC0A27/w/A45108B5/e /private/tmp/helix/working/AFBC0A27/w/A45108B5/e
  Discovering: System.Text.Json.Tests (method display = ClassAndMethod, method display options = None)
  Discovered:  System.Text.Json.Tests (found 2262 of 2294 test cases)
  Starting:    System.Text.Json.Tests (parallel test collections = on, max threads = 4)
./RunTests.sh: line 162:  4756 Segmentation fault: 11  (core dumped) "$RUNTIME_PATH/dotnet" exec --runtimeconfig System.Text.Json.Tests.runtimeconfig.json --depsfile System.Text.Json.Tests.deps.json xunit.console.dll System.Text.Json.Tests.dll -xml testResults.xml -nologo -nocolor -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing $RSP_FILE
/private/tmp/helix/working/AFBC0A27/w/A45108B5/e
----- end Tue Feb 2 11:45:29 PST 2021 ----- exit code 139 ----------------------------------------------------------
exit code 139 means SIGSEGV Illegal memory access. Deref invalid pointer, overrunning buffer, stack overflow etc. Core 

log https://helixre107v0xdeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-heads-master-9a64c530bf744066ac/System.Text.Json.Tests/console.f709eb52.log?sv=2019-07-07&se=2021-02-22T19%3A41%3A51Z&sr=c&sp=rl&sig=xU%2FU9Zqz9syAbZ7PJnLwtfBYk6DtHDt4CTs5OIRB6dI%3D

build https://dev.azure.com/dnceng/public/_build/results?buildId=975991&view=logs&j=05e92ac1-194e-59cf-664a-fa72d1cdd19b&t=caea1d4b-c90c-5be1-e57d-c4635079c333

Runfo Tracking Issue: system.text.json.tests OSX failure

Build	Definition	Kind	Run Name	Console	Core Dump	Test Results	Run Client
1082899	runtime	PR 51099	net6.0-Linux-Release-arm-CoreCLR_checked-(Alpine.312.Arm32.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.12-helix-arm32v7-20200908125213-5bece88	console.log	core dump
1082303	runtime	PR 51073	net6.0-OSX-Debug-x64-CoreCLR_checked-OSX.1013.Amd64.Open	console.log	core dump		runclient.py
1080651	runtime	PR 51025	net6.0-Browser-Release-wasm-Mono_Release-wasmtestonbrowser-Ubuntu.1804.Amd64.Open	console.log		test results	runclient.py
1080651	runtime	PR 51025	net6.0-Browser-Release-wasm-Mono_Release-normal-Ubuntu.1804.Amd64.Open	console.log		test results	runclient.py
1080305	runtime	PR 50832	net6.0-Linux-Release-arm64-CoreCLR_checked-(Alpine.312.Arm64.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.12-helix-arm64v8-20200602002604-25f8a3e	console.log	core dump		runclient.py
1078239	runtime	PR 50893	net6.0-Browser-Release-wasm-Mono_Release-wasmtestonbrowser-Ubuntu.1804.Amd64.Open	console.log			runclient.py
1078239	runtime	PR 50893	net6.0-Browser-Release-wasm-Mono_Release-normal-Ubuntu.1804.Amd64.Open	console.log	core dump		runclient.py
1077590	runtime	PR 50885	net6.0-Browser-Release-wasm-Mono_Release-wasmtestonbrowser-Ubuntu.1804.Amd64.Open	console.log			runclient.py
1077590	runtime	PR 50885	net6.0-Browser-Release-wasm-Mono_Release-normal-Ubuntu.1804.Amd64.Open	console.log	core dump		runclient.py
1077551	runtime	PR 50893	net6.0-Browser-Release-wasm-Mono_Release-normal-Ubuntu.1804.Amd64.Open	console.log	core dump		runclient.py
1077551	runtime	PR 50893	net6.0-Browser-Release-wasm-Mono_Release-wasmtestonbrowser-Ubuntu.1804.Amd64.Open	console.log			runclient.py
1072066	runtime	PR 50364	net6.0-Linux-Release-arm-CoreCLR_checked-(Alpine.312.Arm32.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.12-helix-arm32v7-20200908125213-5bece88	console.log	core dump		runclient.py
1072066	runtime	PR 50364	net6.0-Linux-Release-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log	core dump
1071508	runtime	PR 50364	net6.0-Linux-Release-arm-CoreCLR_checked-(Alpine.312.Arm32.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.12-helix-arm32v7-20200908125213-5bece88	console.log	core dump
1071508	runtime	PR 50364	net6.0-Linux-Release-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log	core dump
1069839	runtime	Rolling	net6.0-OSX-Release-x64-CoreCLR_release-OSX.1013.Amd64.Open	console.log	core dump		runclient.py
1069839	runtime	Rolling	net6.0-OSX-Release-x64-CoreCLR_checked-OSX.1013.Amd64.Open	console.log			runclient.py
1069447	runtime	Rolling	net6.0-OSX-Release-x64-CoreCLR_release-OSX.1014.Amd64.Open	console.log	core dump		runclient.py
1067051	runtime	PR 50479	net6.0-OSX-Debug-x64-Mono_release-OSX.1014.Amd64.Open	console.log	core dump		runclient.py
1067051	runtime	PR 50479	net6.0-OSX-Debug-x64-Mono_release-OSX.1015.Amd64.Open	console.log
1067051	runtime	PR 50479	net6.0-Linux-Debug-x64-mono_interpreter_release-Debian.9.Amd64.Open	console.log	core dump
1067051	runtime	PR 50479	net6.0-Linux-Debug-x64-Mono_release-(Centos.8.Amd64.Open)Ubuntu.1604.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:centos-8-helix-20201229003624-c1bf759	console.log	core dump
1067051	runtime	PR 50479	net6.0-Linux-Debug-x64-Mono_release-RedHat.7.Amd64.Open	console.log	core dump
1067051	runtime	PR 50479	net6.0-Linux-Debug-x64-Mono_release-(Debian.10.Amd64.Open)ubuntu.1604.amd64.open@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-10-helix-amd64-bfcd90a-20200121150006	console.log	core dump
1067051	runtime	PR 50479	net6.0-Linux-Debug-x64-Mono_release-Ubuntu.1604.Amd64.Open	console.log	core dump
1067051	runtime	PR 50479	net6.0-Linux-Debug-x64-Mono_release-Ubuntu.1804.Amd64.Open	console.log	core dump
1067051	runtime	PR 50479	net6.0-Linux-Debug-x64-Mono_release-SLES.15.Amd64.Open	console.log	core dump
1067051	runtime	PR 50479	net6.0-Linux-Debug-x64-Mono_release-(Fedora.30.Amd64.Open)ubuntu.1604.amd64.open@mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-30-helix-20200512010621-4f8cef7	console.log	core dump
1067051	runtime	PR 50479	net6.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	console.log	core dump
1067051	runtime	PR 50479	net6.0-Browser-Release-wasm-Mono_Release-wasmtestonbrowser-Ubuntu.1804.Amd64.Open	console.log
1066426	runtime	PR 50364	net6.0-Linux-Release-arm-CoreCLR_checked-(Alpine.312.Arm32.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.12-helix-arm32v7-20200908125213-5bece88	console.log	core dump
1066426	runtime	PR 50364	net6.0-Linux-Release-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log	core dump
1065829	runtime	Rolling	net6.0-Browser-Release-wasm-Mono_Release-normal-Ubuntu.1804.Amd64.Open	console.log	core dump		runclient.py
1065829	runtime	Rolling	net6.0-Browser-Release-wasm-Mono_Release-wasmtestonbrowser-Ubuntu.1804.Amd64.Open	console.log			runclient.py
1064164	runtime	PR 50446	net6.0-windows-Release-x86-CoreCLR_checked-Windows.10.Amd64.Open	console.log			runclient.py
1064164	runtime	PR 50446	net6.0-Linux-Release-arm64-CoreCLR_checked-(Alpine.312.Arm64.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.12-helix-arm64v8-20200602002604-25f8a3e	console.log	core dump		runclient.py
1064164	runtime	PR 50446	net6.0-Linux-Release-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log	core dump		runclient.py
1064164	runtime	PR 50446	net6.0-Linux-Release-arm-CoreCLR_checked-(Alpine.312.Arm32.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.12-helix-arm32v7-20200908125213-5bece88	console.log	core dump		runclient.py
1063804	runtime	Rolling	net6.0-Browser-Release-wasm-Mono_Release-normal-Ubuntu.1804.Amd64.Open	console.log	core dump		runclient.py
1063487	runtime	PR 50421	net6.0-Browser-Release-wasm-Mono_Release-normal-Ubuntu.1804.Amd64.Open	console.log	core dump		runclient.py
1063487	runtime	PR 50421	net6.0-Browser-Release-wasm-Mono_Release-wasmtestonbrowser-Ubuntu.1804.Amd64.Open	console.log			runclient.py
1063487	runtime	PR 50421	net6.0-Browser-Release-wasm-Mono_Release-normal-Ubuntu.1804.Amd64.Open	console.log	core dump		runclient.py
1063487	runtime	PR 50421	net6.0-Browser-Release-wasm-Mono_Release-wasmtestonbrowser-Ubuntu.1804.Amd64.Open	console.log			runclient.py
1061583	runtime	Rolling	net6.0-Browser-Release-wasm-Mono_Release-normal-Ubuntu.1804.Amd64.Open	console.log	core dump		runclient.py
1061583	runtime	Rolling	net6.0-Browser-Release-wasm-Mono_Release-wasmtestonbrowser-Ubuntu.1804.Amd64.Open	console.log			runclient.py
1061318	runtime	PR 50360	net6.0-Linux-Release-arm-CoreCLR_checked-(Alpine.312.Arm32.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.12-helix-arm32v7-20200908125213-5bece88	console.log	core dump		runclient.py
1061318	runtime	PR 50360	net6.0-Linux-Release-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log	core dump		runclient.py
1061318	runtime	PR 50360	net6.0-Linux-Release-arm64-CoreCLR_checked-(Alpine.312.Arm64.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.12-helix-arm64v8-20200602002604-25f8a3e	console.log	core dump		runclient.py
1061318	runtime	PR 50360	net6.0-windows-Release-x86-CoreCLR_checked-Windows.10.Amd64.Open	console.log
1059587	runtime	PR 50280	net6.0-Browser-Release-wasm-Mono_Release-wasmtestonbrowser-Ubuntu.1804.Amd64.Open	console.log			runclient.py
1057317	runtime	Rolling	net6.0-Browser-Release-wasm-Mono_Release-normal-Ubuntu.1804.Amd64.Open	console.log	core dump		runclient.py
1057171	runtime	PR 50082	net6.0-windows-Release-x86-CoreCLR_checked-Windows.10.Amd64.Open	console.log			runclient.py
1057171	runtime	PR 50082	net6.0-Linux-Release-arm-CoreCLR_checked-(Alpine.312.Arm32.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.12-helix-arm32v7-20200908125213-5bece88	console.log	core dump		runclient.py
1057171	runtime	PR 50082	net6.0-Linux-Release-arm-CoreCLR_checked-(Ubuntu.1804.Arm32.Open)Ubuntu.1804.Armarch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7-bfcd90a-20200121150440	console.log	core dump		runclient.py
1057171	runtime	PR 50082	net6.0-Linux-Release-arm64-CoreCLR_checked-(Alpine.312.Arm64.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.12-helix-arm64v8-20200602002604-25f8a3e	console.log	core dump		runclient.py
1056573	runtime	PR 50254	net6.0-Browser-Release-wasm-Mono_Release-normal-Ubuntu.1804.Amd64.Open	console.log	core dump		runclient.py
1056573	runtime	PR 50254	net6.0-Browser-Release-wasm-Mono_Release-wasmtestonbrowser-Ubuntu.1804.Amd64.Open	console.log			runclient.py
1056573	runtime	PR 50254	net6.0-Browser-Release-wasm-Mono_Release-normal-Ubuntu.1804.Amd64.Open	console.log	core dump		runclient.py
1056573	runtime	PR 50254	net6.0-Browser-Release-wasm-Mono_Release-wasmtestonbrowser-Ubuntu.1804.Amd64.Open	console.log			runclient.py
1056573	runtime	PR 50254	net6.0-Browser-Release-wasm-Mono_Release-wasmtestonbrowser-Ubuntu.1804.Amd64.Open	console.log			runclient.py
1056573	runtime	PR 50254	net6.0-Browser-Release-wasm-Mono_Release-normal-Ubuntu.1804.Amd64.Open	console.log	core dump		runclient.py
1056573	runtime	PR 50254	net6.0-Browser-Release-wasm-Mono_Release-wasmtestonbrowser-Ubuntu.1804.Amd64.Open	console.log			runclient.py
1055639	runtime	PR 50227	net6.0-Browser-Release-wasm-Mono_Release-normal-Ubuntu.1804.Amd64.Open	console.log	core dump	test results	runclient.py
1055639	runtime	PR 50227	net6.0-Browser-Release-wasm-Mono_Release-wasmtestonbrowser-Ubuntu.1804.Amd64.Open	console.log			runclient.py
1055639	runtime	PR 50227	net6.0-Browser-Release-wasm-Mono_Release-wasmtestonbrowser-Ubuntu.1804.Amd64.Open	console.log			runclient.py
1050314	runtime	PR 48601	net6.0-windows-Debug-x64-CoreCLR_checked-Windows.10.Amd64.Open	console.log
1050243	runtime	PR 49635	net6.0-Browser-Release-wasm-Mono_Release-normal-Ubuntu.1804.Amd64.Open	console.log
1050243	runtime	PR 49635	net6.0-Browser-Release-wasm-Mono_Release-wasmtestonbrowser-Ubuntu.1804.Amd64.Open	console.log
1047146	runtime	PR 49635	net6.0-Browser-Release-wasm-Mono_Release-normal-Ubuntu.1804.Amd64.Open	console.log
1047146	runtime	PR 49635	net6.0-Browser-Release-wasm-Mono_Release-wasmtestonbrowser-Ubuntu.1804.Amd64.Open	console.log
1047146	runtime	PR 49635	net6.0-Browser-Release-wasm-Mono_Release-normal-Ubuntu.1804.Amd64.Open	console.log
1047146	runtime	PR 49635	net6.0-Browser-Release-wasm-Mono_Release-wasmtestonbrowser-Ubuntu.1804.Amd64.Open	console.log
1046026	runtime	PR 49740	net6.0-Linux-Debug-x64-mono_interpreter_release-Debian.9.Amd64.Open	console.log	core dump
1046026	runtime	PR 49740	net6.0-Linux-Debug-x64-Mono_release-(Centos.8.Amd64.Open)Ubuntu.1604.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:centos-8-helix-20201229003624-c1bf759	console.log	core dump
1046026	runtime	PR 49740	net6.0-Linux-Debug-x64-Mono_release-RedHat.7.Amd64.Open	console.log	core dump		runclient.py
1046026	runtime	PR 49740	net6.0-Linux-Debug-x64-Mono_release-(Debian.10.Amd64.Open)ubuntu.1604.amd64.open@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-10-helix-amd64-bfcd90a-20200121150006	console.log	core dump
1046026	runtime	PR 49740	net6.0-Linux-Debug-x64-Mono_release-Ubuntu.1604.Amd64.Open	console.log	core dump
1046026	runtime	PR 49740	net6.0-Linux-Debug-x64-Mono_release-Ubuntu.1804.Amd64.Open	console.log	core dump
1046026	runtime	PR 49740	net6.0-Linux-Debug-x64-Mono_release-SLES.15.Amd64.Open	console.log	core dump
1046026	runtime	PR 49740	net6.0-Linux-Debug-x64-Mono_release-(Fedora.30.Amd64.Open)ubuntu.1604.amd64.open@mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-30-helix-20200512010621-4f8cef7	console.log	core dump
1046026	runtime	PR 49740	net6.0-Linux-Debug-arm64-Mono_release-(Ubuntu.1804.ArmArch.Open)Ubuntu.1804.ArmArch.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-20210106155927-56c6673	console.log	core dump
1046026	runtime	PR 49740	net6.0-OSX-Debug-x64-Mono_release-OSX.1014.Amd64.Open	console.log	core dump
1046026	runtime	PR 49740	net6.0-OSX-Debug-x64-Mono_release-OSX.1015.Amd64.Open	console.log	core dump
1045420	runtime	PR 49635	net6.0-Browser-Release-wasm-Mono_Release-normal-Ubuntu.1804.Amd64.Open	console.log
1045420	runtime	PR 49635	net6.0-Browser-Release-wasm-Mono_Release-wasmtestonbrowser-Ubuntu.1804.Amd64.Open	console.log
1041458	runtime	PR 49691	net6.0-windows-Debug-x64-Mono_release-Windows.81.Amd64.Open	console.log			runclient.py
1041458	runtime	PR 49691	net6.0-windows-Debug-x64-Mono_release-Windows.10.Amd64.Server19H1.ES.Open	console.log			runclient.py
1041454	runtime	PR 49693	net6.0-windows-Debug-x64-Mono_release-Windows.81.Amd64.Open	console.log			runclient.py
1041454	runtime	PR 49693	net6.0-windows-Debug-x64-Mono_release-Windows.10.Amd64.Server19H1.ES.Open	console.log			runclient.py
1041454	runtime	PR 49693	net6.0-windows-Debug-x64-Mono_release-Windows.81.Amd64.Open	console.log			runclient.py
1041454	runtime	PR 49693	net6.0-windows-Debug-x64-Mono_release-Windows.10.Amd64.Server19H1.ES.Open	console.log			runclient.py
1041440	runtime	PR 49544	net6.0-windows-Debug-x64-Mono_release-Windows.81.Amd64.Open	console.log			runclient.py
1041440	runtime	PR 49544	net6.0-windows-Debug-x64-Mono_release-Windows.10.Amd64.Server19H1.ES.Open	console.log			runclient.py
1041440	runtime	PR 49544	net6.0-windows-Debug-x64-Mono_release-Windows.81.Amd64.Open	console.log			runclient.py
1041440	runtime	PR 49544	net6.0-windows-Debug-x64-Mono_release-Windows.10.Amd64.Server19H1.ES.Open	console.log			runclient.py
1041433	runtime	PR 48226	net6.0-windows-Debug-x64-Mono_release-Windows.81.Amd64.Open	console.log			runclient.py
1041433	runtime	PR 48226	net6.0-windows-Debug-x64-Mono_release-Windows.10.Amd64.Server19H1.ES.Open	console.log			runclient.py
1041428	runtime	PR 49305	net6.0-windows-Debug-x64-Mono_release-Windows.81.Amd64.Open	console.log			runclient.py
1041428	runtime	PR 49305	net6.0-windows-Debug-x64-Mono_release-Windows.10.Amd64.Server19H1.ES.Open	console.log			runclient.py
1041386	runtime	PR 49540	net6.0-windows-Debug-x64-Mono_release-Windows.81.Amd64.Open	console.log			runclient.py

Displaying 100 of 583 results

Build Result Summary

Day Hit Count	Week Hit Count	Month Hit Count
1	7	129

Tagging subscribers to this area: @eiriktsarpalis, @layomia
See info in area-owners.md if you want to be subscribed.

Issue Details

---

/tmp/helix/working/AFBC0A27/p/dotnet exec --runtimeconfig System.Text.Json.Tests.runtimeconfig.json --depsfile System.Text.Json.Tests.deps.json xunit.console.dll System.Text.Json.Tests.dll -xml testResults.xml -nologo -nocolor -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing 
popd
===========================================================================================================
/private/tmp/helix/working/AFBC0A27/w/A45108B5/e /private/tmp/helix/working/AFBC0A27/w/A45108B5/e
  Discovering: System.Text.Json.Tests (method display = ClassAndMethod, method display options = None)
  Discovered:  System.Text.Json.Tests (found 2262 of 2294 test cases)
  Starting:    System.Text.Json.Tests (parallel test collections = on, max threads = 4)
./RunTests.sh: line 162:  4756 Segmentation fault: 11  (core dumped) "$RUNTIME_PATH/dotnet" exec --runtimeconfig System.Text.Json.Tests.runtimeconfig.json --depsfile System.Text.Json.Tests.deps.json xunit.console.dll System.Text.Json.Tests.dll -xml testResults.xml -nologo -nocolor -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing $RSP_FILE
/private/tmp/helix/working/AFBC0A27/w/A45108B5/e
----- end Tue Feb 2 11:45:29 PST 2021 ----- exit code 139 ----------------------------------------------------------
exit code 139 means SIGSEGV Illegal memory access. Deref invalid pointer, overrunning buffer, stack overflow etc. Core 

log https://helixre107v0xdeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-heads-master-9a64c530bf744066ac/System.Text.Json.Tests/console.f709eb52.log?sv=2019-07-07&se=2021-02-22T19%3A41%3A51Z&sr=c&sp=rl&sig=xU%2FU9Zqz9syAbZ7PJnLwtfBYk6DtHDt4CTs5OIRB6dI%3D

build https://dev.azure.com/dnceng/public/_build/results?buildId=975991&view=logs&j=05e92ac1-194e-59cf-664a-fa72d1cdd19b&t=caea1d4b-c90c-5be1-e57d-c4635079c333

Author:	Anipik
Assignees:	-
Labels:	area-System.Text.Json, untriaged
Milestone:	-

[Anipik]

seems similar to #46100

[Anipik]

Failed again https://dev.azure.com/dnceng/public/_build/results?buildId=982059&view=logs&j=5daca27f-52cd-532c-7da3-66cd43b2fb44&t=544b6965-1404-5848-fc5a-30d8345c68ff

[Anipik]

cc @layomia @steveharter

[steveharter]

@ViktorHofer thoughts? I can't seem to find any crash dumps (via an "attachments" tab?) or other information.

It may be related to #46100, but I can't find what test(s) were running. I logged this previously about the lack of information available during crash dumps; at a minimum having the active test(s) that were running at the time of the crash would be valuable.

As a last resort, I could try running it on a local macbook repeatedly and hope it triggers the exception (with dump).

[danmoseley]

crash dump: #46100 (comment)

[ViktorHofer]

@steveharter did the crash dump work for you that @danmoseley shared above?

[danmoseley]

We have some fresh dumps for this now, and thanks to recent effort by @safern, getting set up debugging them is practically a single command.

I used this query --

https://engsrvprod.kusto.windows.net/engineeringdata?query=H4sIAAAAAAAEAJWSXWvCMBSG7wX%2fQ8hVC127zSGD0YH7EPRibLixyxGb4zza5pTkFBX241erpa3zZncpeZPzvE%2bTAouFwhS0iMWU5q7fi6IfsVmCBTGjwiYgEjKs0DghNbEBjmxhGDOQ%2fd5JMo6FTDDKi3mKSdRNRxYWLlqC0i7KlGOwUpD9%2f0k0cs8o6tGvlnKwjOBaoMkSkjXoFiFTShuw3lsBBYxSVM5v8vWmJLeVfqsWK8ulmnuhvskbXOpqL7e0goT3uiY6EKK5MqjrlHxBRebiXFkHXytHxmtQ%2faDtuQqGT7BAg4xkJrryMbwdVgVWhEas0egYjQHb73mfZNcThsw1qGOLYHS6e1HZweZsVzrOwnfYcjgtp5crx67rriKvTvxVMUpzNBAOrq7DUaaHNydeuHDVmAeln7fI8oyYmnK%2fPpoMxCMZRyl8WPQFmUP0rt8bl0%2bw3ab87HLJJW0umFp%2ftL6%2b07zJn%2fY%2fr%2fL49kuShvYXf5f9RRQDAAA%3d&web=0

let failed = Jobs
//| where Source contains "dotnet/runtime"
| where Source == "ci/public/dotnet/runtime/refs/heads/master" or Source == "ci/public/dotnet/runtime/refs/heads/main"
// | where Properties contains "checked"
| where tolower(QueueAlias) contains tolower("osx")
| where Started > ago(30d)
| project JobId, QueueAlias, Source // , Props=parse_json(Properties),
//| where Props.DefinitionId == "686"
| join kind=inner
(WorkItems
| where FriendlyName == "System.Text.Json.Tests"
// | where QueueName contains tolower("Alpine.312.Amd64")
| where Status == "BadExit"
| project JobId, WorkItemId, Started, ConsoleUri) on JobId;
Files
| where FileName contains "how-to"
| where WorkItemFriendlyName contains "System.Text.Json"
| join kind=inner
failed on WorkItemId

JobId	JobName	WorkItemId	WorkItemName	WorkItemFriendlyName	Attempt	EventId	Uri	FileName	UploadSeconds	SizeBytes	JobId2	QueueAlias	Source	JobId1	WorkItemId1	Started	ConsoleUri
13631952	70a9a136-d7a7-415d-89aa-62f3d1c6c159	570902239	7d86f8f1-3550-4ccb-8390-332c5a391de8	System.Text.Json.Tests	1	5463102564	https://helixre107v0xdeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-heads-master-70a9a136d7a7415d89/System.Text.Json.Tests/how-to-debug-dump.md?sv=2019-07-07&se=2021-03-15T00%3A28%3A04Z&sr=c&sp=rl&sig=UbnWtUuINADGpHrkpjFLjG8xKihSz71djxadzUfXrGQ%3D	how-to-debug-dump.md	0	6500	13631952	osx.1013.amd64.open	ci/public/dotnet/runtime/refs/heads/master	13631952	570902239	2021-02-23 00:29:08.3060000	https://helixre107v0xdeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-heads-master-70a9a136d7a7415d89/System.Text.Json.Tests/console.515a7b53.log?sv=2019-07-07&se=2021-03-15T00%3A28%3A04Z&sr=c&sp=rl&sig=UbnWtUuINADGpHrkpjFLjG8xKihSz71djxadzUfXrGQ%3D
13659135	92d9e820-e407-446f-929d-2c105c128dad	572125446	41197480-6a14-479d-b1e4-28fb29e1a6f2	System.Text.Json.Tests	1	5475736431	https://helixre107v0xdeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-heads-master-92d9e820e407446f92/System.Text.Json.Tests/how-to-debug-dump.md?sv=2019-07-07&se=2021-03-16T03%3A39%3A55Z&sr=c&sp=rl&sig=KbW5pm6QyreQy1FhYQ4AsO6nvBB4Qyzy1%2F0o%2BssRDnY%3D	how-to-debug-dump.md	0	6500	13659135	osx.1013.amd64.open	ci/public/dotnet/runtime/refs/heads/master	13659135	572125446	2021-02-24 03:41:02.3600000	https://helixre107v0xdeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-heads-master-92d9e820e407446f92/System.Text.Json.Tests/console.8c4b7126.log?sv=2019-07-07&se=2021-03-16T03%3A39%3A55Z&sr=c&sp=rl&sig=KbW5pm6QyreQy1FhYQ4AsO6nvBB4Qyzy1%2F0o%2BssRDnY%3D
13711303	9767a0a4-6430-499d-8f36-12da7a70b4da	574598097	ddd2029-33fd-463b-bd7d-8836a1d1a147	System.Text.Json.Tests	1	5500964830	https://helixre107v0xdeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-heads-master-9767a0a46430499d8f/System.Text.Json.Tests/how-to-debug-dump.md?sv=2019-07-07&se=2021-03-18T11%3A48%3A57Z&sr=c&sp=rl&sig=EPQdAOJvD8GCdmmhXP%2B5AiuBl260SjMEae%2FDAIMZrx8%3D	how-to-debug-dump.md	0	6500	13711303	osx.1013.amd64.open	ci/public/dotnet/runtime/refs/heads/master	13711303	574598097	2021-02-26 11:49:59.9200000	https://helixre107v0xdeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-heads-master-9767a0a46430499d8f/System.Text.Json.Tests/console.83da681c.log?sv=2019-07-07&se=2021-03-18T11%3A48%3A57Z&sr=c&sp=rl&sig=EPQdAOJvD8GCdmmhXP%2B5AiuBl260SjMEae%2FDAIMZrx8%3D
13918884	a18c2113-8e70-40f3-967c-ada5df3ab122	584030863	854de7a2-23a1-4d58-8276-fc7a31b9e4a3	System.Text.Json.Tests	1	5596681342	https://helixre107v0xdeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-heads-main-a18c21138e7040f396/System.Text.Json.Tests/how-to-debug-dump.md?sv=2019-07-07&se=2021-03-30T03%3A30%3A16Z&sr=c&sp=rl&sig=RTYiC9aOfCFarBhU5meOO1Wfu3NZuEX9RSMimXvy5L0%3D	how-to-debug-dump.md	0	6465	13918884	osx.1013.amd64.open	ci/public/dotnet/runtime/refs/heads/main	13918884	584030863	2021-03-10 03:31:04.2550000	https://helixre107v0xdeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-heads-main-a18c21138e7040f396/System.Text.Json.Tests/console.fc7cd506.log?sv=2019-07-07&se=2021-03-30T03%3A30%3A16Z&sr=c&sp=rl&sig=RTYiC9aOfCFarBhU5meOO1Wfu3NZuEX9RSMimXvy5L0%3D

And I clicked the link in the most recent hit, it pulls up how-to-debug-dump.md, which gives me the magic commands to paste in to get dump, symbols, and binaries pulled down, then open it in lldb, eg

dotnet tool install --global runfo
dotnet tool update --global runfo
runfo get-helix-payload -j a18c2113-8e70-40f3-967c-ada5df3ab122 -w System.Text.Json.Tests -o ~/helix_payload/System.Text.Json.Tests\
lldb --core ~/helix_payload/System.Text.Json.Tests/workitems/System.Text.Json.Tests/core.41566 ~/helix_payload/System.Text.Json.Tests/shared/Microsoft.NETCore.App/6.0.0/dotnet

It really is super easy now. Unfortunately I don't have a Mac, so I couldn't actually do the lldb part. @steveharter could you please take a look, and tell us how this goes for you?

cc @jkotas