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JIT: Assertion failed 'found' in 'BoxTest_typedref_il.Test:Fibonacci(System.TypedReference,System.TypedReference):System.Object:this' #133047

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#133079
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JIT: Assertion failed 'found' in 'BoxTest_typedref_il.Test:Fibonacci(System.TypedReference,System.TypedReference):System.Object:this'#133047
#133079
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jakobbotsch
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area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMIblocking-clean-ci-optionalBlocking optional rolling runs

Description

@JulieLeeMSFT
JulieLeeMSFT
opened on Sep 1, 2026

Summary:
68 Methodical work items asserts because the expected liveness entry is not found.

Failed in (1):

Console Log: Console Log
Source: runtime-coreclr jitstress / coreclr linux arm Checked jitstress1_tiered @ (Debian.13.Arm32.Open)AzureLinux.3.Arm64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-13-helix-arm32v7@sha256:2ac4e961986424981bcbeb590b61c6db413bf7565d310c5e7ab13dfbedb2ee9d / Methodical_r1

Failed tests:

- coreclr linux arm Checked jitstress1 @ (Debian.13.Arm32.Open)AzureLinux.3.Arm64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-13-helix-arm32v7@sha256:2ac4e961986424981bcbeb590b61c6db413bf7565d310c5e7ab13dfbedb2ee9d
- coreclr linux arm Checked jitstress1_tiered @ (Debian.13.Arm32.Open)AzureLinux.3.Arm64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-13-helix-arm32v7@sha256:2ac4e961986424981bcbeb590b61c6db413bf7565d310c5e7ab13dfbedb2ee9d
- coreclr linux arm Checked jitstress2 @ (Debian.13.Arm32.Open)AzureLinux.3.Arm64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-13-helix-arm32v7@sha256:2ac4e961986424981bcbeb590b61c6db413bf7565d310c5e7ab13dfbedb2ee9d
- coreclr linux arm Checked jitstress2_tiered @ (Debian.13.Arm32.Open)AzureLinux.3.Arm64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-13-helix-arm32v7@sha256:2ac4e961986424981bcbeb590b61c6db413bf7565d310c5e7ab13dfbedb2ee9d
- coreclr linux arm64 Checked jitstress1 @ AzureLinux.3.Arm64.Open
- coreclr linux arm64 Checked jitstress1_tiered @ AzureLinux.3.Arm64.Open
- coreclr linux arm64 Checked jitstress2 @ AzureLinux.3.Arm64.Open
- coreclr linux arm64 Checked jitstress2_tiered @ AzureLinux.3.Arm64.Open
- coreclr linux x64 Checked jitstress1 @ AzureLinux.3.Amd64.Open
- coreclr linux x64 Checked jitstress1_tiered @ AzureLinux.3.Amd64.Open
- coreclr linux x64 Checked jitstress2 @ AzureLinux.3.Amd64.Open
- coreclr linux x64 Checked jitstress2_tiered @ AzureLinux.3.Amd64.Open
- coreclr osx arm64 Checked jitstress1 @ OSX.26.Arm64.Open
- coreclr osx arm64 Checked jitstress1_tiered @ OSX.26.Arm64.Open
- coreclr osx arm64 Checked jitstress2 @ OSX.26.Arm64.Open
- coreclr osx arm64 Checked jitstress2_tiered @ OSX.26.Arm64.Open
- coreclr osx x64 Checked jitstress1 @ OSX.15.Amd64.Open
- coreclr osx x64 Checked jitstress1_tiered @ OSX.15.Amd64.Open
- coreclr osx x64 Checked jitstress2 @ OSX.15.Amd64.Open
- coreclr osx x64 Checked jitstress2_tiered @ OSX.15.Amd64.Open
- coreclr windows arm64 Checked jitstress1 @ Windows.11.Arm64.Open
- coreclr windows arm64 Checked jitstress1_tiered @ Windows.11.Arm64.Open
- coreclr windows arm64 Checked jitstress2 @ Windows.11.Arm64.Open
- coreclr windows arm64 Checked jitstress2_tiered @ Windows.11.Arm64.Open
- coreclr windows x64 Checked jitstress1 @ Windows.Amd64.Open.rt
- coreclr windows x64 Checked jitstress1_tiered @ Windows.Amd64.Open.rt
- coreclr windows x64 Checked jitstress2 @ Windows.Amd64.Open.rt
- coreclr windows x64 Checked jitstress2_tiered @ Windows.Amd64.Open.rt
- coreclr windows x86 Checked jitstress1 @ Windows.10.Amd64.Open
- coreclr windows x86 Checked jitstress1_tiered @ Windows.10.Amd64.Open
- coreclr windows x86 Checked jitstress2 @ Windows.10.Amd64.Open
- coreclr windows x86 Checked jitstress2_tiered @ Windows.10.Amd64.Open
  - Methodical_others
  - Methodical_r1
  - Methodical_r2

Error Message:

Assert failure(PID 3216 [0x00000c90], Thread: 8652 [0x21cc]): Assertion failed 'found' in 'BoxTest_typedref_il.Test:Fibonacci(System.TypedReference,System.TypedReference):System.Object:this' during 'Physical promotion' (IL size 80; hash 0x04dc915d; Tier0-FullOpts)

    File: D:\a\_work\1\s\src\coreclr\jit\promotionliveness.cpp:702
    Image: C:\h\w\C1580A1D\p\corerun.exe

Exit Code: -1073740286
Expected: 100
Actual: -1073740286

Activity

  1. JulieLeeMSFT
    added
    blocking-clean-ci-optionalBlocking optional rolling runs
    on Sep 1, 2026
  2. dotnet-policy-service
    added
    untriagedNew issue has not been triaged by the area owner
    on Sep 1, 2026
  3. JulieLeeMSFT
    assigned
    jakobbotsch
    on Sep 1, 2026
  4. github-actions
    added
    area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI
    on Sep 1, 2026

  5. JulieLeeMSFT commented on Sep 1, 2026

    @JulieLeeMSFT
    JulieLeeMSFT
    on Sep 1, 2026
    MemberAuthor

    @jakobbotsch, PTAL.

  6. dotnet-policy-service commented on Sep 1, 2026

    @dotnet-policy-service
    dotnet-policy-serviceBot
    on Sep 1, 2026 – with Dotnet Policy Service
    Contributor

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

  7. VincentBu commented on Sep 3, 2026

    @VincentBu
    VincentBu
    on Sep 3, 2026
    Contributor

    Please let me know if I need create another issue for the following error.

    Failed build: runtime-coreclr jitstress 20260901.1

    Failed tests:

    coreclr linux x64 Checked jitstress2 @ AzureLinux.3.Amd64.Open
- Methodical_r2 Work Item
coreclr linux x64 Checked jitstress1 @ AzureLinux.3.Amd64.Open
- Methodical_r2 Work Item
coreclr linux arm64 Checked jitstress1 @ AzureLinux.3.Arm64.Open
- Methodical_r2 Work Item
coreclr linux arm64 Checked jitstress2 @ AzureLinux.3.Arm64.Open
- Methodical_r2 Work Item
coreclr linux arm Checked jitstress1 @ (Debian.13.Arm32.Open)AzureLinux.3.Arm64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-13-helix-arm32v7@sha256:2ac4e961986424981bcbeb590b61c6db413bf7565d310c5e7ab13dfbedb2ee9d
- Methodical_r2 Work Item
coreclr linux arm Checked jitstress2 @ (Debian.13.Arm32.Open)AzureLinux.3.Arm64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-13-helix-arm32v7@sha256:2ac4e961986424981bcbeb590b61c6db413bf7565d310c5e7ab13dfbedb2ee9d
- Methodical_r2 Work Item
coreclr linux arm Checked jitstress1_tiered @ (Debian.13.Arm32.Open)AzureLinux.3.Arm64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-13-helix-arm32v7@sha256:2ac4e961986424981bcbeb590b61c6db413bf7565d310c5e7ab13dfbedb2ee9d
- Methodical_r2 Work Item
coreclr osx x64 Checked jitstress2 @ OSX.15.Amd64.Open
- Methodical_r2 Work Item
coreclr osx x64 Checked jitstress1 @ OSX.15.Amd64.Open
- Methodical_r2 Work Item
coreclr linux arm Checked jitstress2_tiered @ (Debian.13.Arm32.Open)AzureLinux.3.Arm64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-13-helix-arm32v7@sha256:2ac4e961986424981bcbeb590b61c6db413bf7565d310c5e7ab13dfbedb2ee9d
- Methodical_r2 Work Item
coreclr osx arm64 Checked jitstress2 @ OSX.26.Arm64.Open
- Methodical_r2 Work Item
coreclr osx arm64 Checked jitstress1 @ OSX.26.Arm64.Open
- Methodical_r2 Work Item

    Error message:

    Assert failure(PID 35489 [0x00008aa1], Thread: 35489 [0x8aa1]): Assertion failed 'found' in 'JitTest_array1_refany_il.Test:TestRef(System.TypedReference)' during 'Physical promotion' (IL size 285; hash 0x3831a369; FullOpts)

    File: /__w/1/s/src/coreclr/jit/promotionliveness.cpp:702
    Image: /datadisks/disk1/work/A49C099D/p/corerun

[createdump] Gathering state for process 35489 corerun
[createdump] Crashing thread 8aa1 signal 6 (0006)
[createdump] Writing crash report to file /datadisks/disk1/dumps/coredump.35489.dmp.crashreport.json
[createdump] Crash report successfully written
[createdump] Writing minidump with heap to file /datadisks/disk1/dumps/coredump.35489.dmp
[createdump] Written 124030976 bytes (30281 pages) to core file
[createdump] Target process is alive
[createdump] Dump successfully written in 684ms
waitpid() returned successfully (wstatus 00000000) WEXITSTATUS 0 WTERMSIG 0
Child killed by signal 6
Exit Code: 134
Expected: 100
Actual: 134
END EXECUTION - FAILED
  8. jakobbotsch
    closed this as completedin #133079on Sep 6, 2026
  9. dotnet-policy-service
    removed
    untriagedNew issue has not been triaged by the area owner
    on Sep 6, 2026
  10. github-actions
    locked and limited conversation to collaborators on Oct 7, 2026
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