error MSB6006: "csc.dll" exited with code 139

[sxul]

Description

Install dotnet sdk 6.0 preview and execute that commands in android device:

dotnet new console 
dotnet build

/home/sxul07/.dotnet/bin/sdk/6.0.100-preview.7.21379.14/Roslyn/Microsoft.CSharp.Core.targets(75,5): error MSB6006: “csc.dll”exited with code 139. [/home/sxul07/tmp/hw/hw.csproj]

Configuration

• Which version of .NET is the code running on?

• dotnet sdk 6.0.100-preview.7.21379.14

• What OS and version, and what distro if applicable?

• TermuxArch in Termux base on Android 11(MIUI12.5)

• What is the architecture (x64, x86, ARM, ARM64)?

• ARM64

• uname -a: Linux localhost 5.4.61-qgki-g597cd7c1d73b #1 SMP PREEMPT Thu Aug 5 03:06:50 CST 2021 aarch64 GNU/Linux

Other information

[dotnet-issue-labeler]

I couldn't figure out the best area label to add to this issue. If you have write-permissions please help me learn by adding exactly one area label.

[jeffschwMSFT]

@sxul can you capture the issue under a debugger and share a stack trace/dump?

[valentinbreiz]

Hello, I have the same problem on aarch64 too. Here is a strace log for the dotnet build command:

strace.txt

[mangod9]

Hi @sxul @valentinbreiz , does this fail on Termux or do you observe the failure on other distros as well?

[mangod9]

Also would be good to know if this is a regression (whether things worked fine in .net 5 or previous .net 6 previews)

[valentinbreiz]

With .NET 5 there are segmentation faults everywhere even with dotnet --v ...
Only dotnet or dotnet --list-runtimes / --list-sdks was working

[mangod9]

Ok since this is not a regression and assuming it happens with this specific distro moving to 7.

[ViktorHofer]

Just happened again on Build Android x64 Release AllSubsets_Mono_RuntimeTests_Interp (7.0): https://dev.azure.com/dnceng/public/_build/results?buildId=1320414&view=logs&jobId=c1e461de-48bf-5e60-0a97-1d3931972820&j=c1e461de-48bf-5e60-0a97-1d3931972820

Container is ubuntu-18.04-android

[AlexanderZhelnin]

arm64 android termux
dotnet7 does not start
dotnet8 does not start
dotnet6 when I launch "dotnet build" then "dotnet/sdk/6.0.407/Roslyn/Microsoft.CSharp.Core.targets(75,5): error MSB6006: "csc.dll" exited with code 139."

https://drive.google.com/file/d/1oI070ceGNcBYwEopoUVjIyTMURZwk6V_/view?usp=share_link

[Miepee]

Is this only happening under Termux and proot? It could be this issue: termux/proot#107

[Miepee]

I managed to get this (dotnet 6) running under Termux -> Ubuntu proot with gdb, not sure if it'll be helpful in any way:

Starting program: /usr/bin/dotnet build
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/aarch64-linux-gnu/libthread_db.so.1".
[New Thread 0x7ff71df0e0 (LWP 32686)]
[New Thread 0x7ff69cf0e0 (LWP 32687)]
[New Thread 0x7ff61bf0e0 (LWP 32690)]
[New Thread 0x7ff59af0e0 (LWP 32692)]
[New Thread 0x7ff517f0e0 (LWP 32693)]
[New Thread 0x7ff496f0e0 (LWP 32695)]
[New Thread 0x7f7d7af0e0 (LWP 32696)]
[New Thread 0x7f7cf9f0e0 (LWP 32697)]
[New Thread 0x7f563cf0e0 (LWP 32702)]
[New Thread 0x7fe759f0e0 (LWP 32703)]
[New Thread 0x7f55bbf0e0 (LWP 32704)]
[New Thread 0x7f553af0e0 (LWP 32705)]
Microsoft (R) Build Engine version 17.0.1+b177f8fa7 for .NET
Copyright (C) Microsoft Corporation. All rights reserved.

[New Thread 0x7f54b9f0e0 (LWP 32706)]
[New Thread 0x7f3ffff0e0 (LWP 32708)]
[New Thread 0x7f3f7ef0e0 (LWP 32710)]
[New Thread 0x7f3efdf0e0 (LWP 32711)]
[New Thread 0x7f3e7cf0e0 (LWP 32712)]
[New Thread 0x7f3dfbf0e0 (LWP 32713)]
[New Thread 0x7f3d7af0e0 (LWP 32714)]
[New Thread 0x7f3cf9f0e0 (LWP 32719)]

Thread 10 ".NET ThreadPool" received signal SIG34, Real-time event 34.
[Switching to Thread 0x7f563cf0e0 (LWP 32702)]
__GI___clock_gettime (tp=0x7f563ce258, clock_id=<optimized out>) at ../sysdeps/unix/sysv/linux/clock_gettime.c:69
69      ../sysdeps/unix/sysv/linux/clock_gettime.c: No such file or directory.
(gdb) bt full
#0  __GI___clock_gettime (tp=0x7f563ce258,
    clock_id=<optimized out>)
    at ../sysdeps/unix/sysv/linux/clock_gettime.c:69
        r = 0
        vdso_time64 = <optimized out>
        r = <optimized out>
        vdso_time64 = <optimized out>
        _sys_result = <optimized out>
        _x1tmp = <optimized out>
        _x0tmp = <optimized out>
        _x0 = <optimized out>
        _x1 = <optimized out>
        _x8 = <optimized out>
#1  __GI___clock_gettime (clock_id=<optimized out>,
    tp=0x7f563ce258)
    at ../sysdeps/unix/sysv/linux/clock_gettime.c:29
        r = <optimized out>
        vdso_time64 = 0x0
        _sys_result = <optimized out>
        _x1tmp = <optimized out>
        _x0tmp = <optimized out>
        _x0 = <optimized out>
        _x1 = <optimized out>
        _x8 = <optimized out>
#2  0x0000007ff7845354 in ?? ()
   from /usr/lib/dotnet/shared/Microsoft.NETCore.App/6.0.13/libcoreclr.so
No symbol table info available.
#3  0x0000007f7db63bb8 in ?? ()
No symbol table info available.
#4  0x0000007f00000000 in ?? ()
No symbol table info available.
Backtrace stopped: previous frame identical to this fram--Type <RET> for more, q to quit, c to continue without paging--c
e (corrupt stack?)
(gdb)

[vocko]

Same issue happens to me in GitHub Workflow on ubuntu-latest runner:

Run dotnet test MyProject.Tests --configuration Release
  Determining projects to restore...
  Restored /home/runner/work/my-repo/MyProject/MyProject.csproj (in 3.39 sec).
  Restored /home/runner/work/my-repo/MyProject.Tests/MyProject.Tests.csproj (in 3.4 sec).
  Restored /home/runner/work/my-repo/Lib1/Lib1.csproj (in 22 ms).
  Restored /home/runner/work/my-repo/Lib2/Lib2.csproj (in 22 ms).
  Lib1 -> /home/runner/work/my-repo/Lib1/bin/Release/net7.0/Lib1.dll
  Lib2 -> /home/runner/work/my-repo/Lib2/bin/Release/net7.0/Lib2.dll
/usr/share/dotnet/sdk/7.0.302/Roslyn/Microsoft.CSharp.Core.targets(80,5): error MSB6006: "csc.dll" exited with code 139. [/home/runner/work/my-repo/MyProject/MyProject.csproj]
Error: Process completed with exit code 1.

Dotnet setup command

Run actions/setup-dotnet@v3
  with:
    dotnet-version: 7.0.x
    cache: false
/home/runner/work/_actions/actions/setup-dotnet/v3/externals/install-dotnet.sh --channel 7.0
dotnet-install: .NET Core SDK with version '7.0.302' is already installed.

Runner

Current runner version: '2.304.0'
Operating System
  Ubuntu
  22.04.2
  LTS
Runner Image
  Image: ubuntu-22.04
  Version: 20230517.1
  Included Software: https://github.com/actions/runner-images/blob/ubuntu22/20230517.1/images/linux/Ubuntu2204-Readme.md
  Image Release: https://github.com/actions/runner-images/releases/tag/ubuntu22%2F20230517.1
Runner Image Provisioner
  2.0.171.1

[jkotas]

"csc.dll" exited with code 139

This is a generic symptom of a crash that can have many different root causes. In order to root cause crashes like this one, we need a coredump and stacktrace of the crash extracted from the coredump.