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+<think>
+Okay, so I'm trying to figure out why this error happened when building Jenkins in a Docker container on my system. Let's start by looking at the details provided.
+
+First, from the log output, it seems like there was an issue with the JLink command during the build process. The user mentioned encountering a core dump, which usually indicates a program crashed and generated a core file for debugging. The specific error message mentions "Aborted (core dumped)", so something went wrong in the execution of `jlink`.
+
+Looking at the steps to reproduce:
+
+1. They installed QEMU and qemu-user-static using apt-get.
+2. Then ran a Docker command with multiarch/qemu-user-static, resetting and allowing privileges.
+3. Started an interactive Docker container based on ppc64le/ubuntu:20.04.
+4. Updated packages and installed OpenJDK 11 JDK.
+
+The problem occurred specifically when running the `jlink` command as part of building Jenkins' Dockerfile. The user also noted that even when trying to isolate the issue by installing OpenJDK from the Ubuntu repo, they faced the same problem.
+
+Comparing this to a similar GitLab issue (https://gitlab.com/qemu-project/qemu/-/issues/319), it seems like there's a known problem with QEMU on certain architectures. The user mentioned that s390x works now, which suggests that maybe older versions or specific configurations are causing issues.
+
+Now, thinking through possible causes:
+
+- **QEMU Emulator Issues**: Since the steps involve using QEMU for emulation (specifically qemu-user-static), it's possible there's a bug in how the emulator handles certain operations. The user is targeting ppc64le, which might not be as well-supported or might have known issues with JLink.
+
+- **JDK Compatibility**: Maybe the version of OpenJDK installed doesn't work well with QEMU on ppc64le. Or perhaps there's a missing library or dependency that's causing JLink to crash when run under emulation.
+
+- **Docker Configuration**: The Docker setup might be lacking some necessary resources or configurations needed for running QEMU properly, especially if the host machine isn't set up to handle PPC64LE natively.
+
+Looking at the provided logs:
+
+The log includes GPR and FPR values, which are general purpose registers and floating-point registers respectively. In assembly debugging, these can show the state of the CPU when a crash occurs. The CR value shows some flags (like L for link register), and the FPSCR might indicate the status of floating-point operations.
+
+One thing that stands out is the FPSCR: 000000008a008000. I'm not an expert on PowerPC assembly, but this could mean something went wrong with a floating-point operation. Maybe JLink relies heavily on FPU instructions and there's an issue when emulating them.
+
+I remember that QEMU's user mode emulation can sometimes have issues with certain CPU features or when the host doesn't support the target architecture as well. For PPC64LE, if the host is x86_64, it might not handle all FPU operations correctly, leading to such crashes.
+
+Potential solutions:
+
+1. **Update QEMU**: The user mentioned that s390x works now, which implies that newer versions of QEMU might have fixed this issue. Updating to a more recent version could resolve the problem for ppc64le as well.
+
+2. **Check Dependencies**: Ensure all necessary libraries are installed in both the host and Docker environments. Maybe some system libraries required by JLink aren't present or are mismatched.
+
+3. **Alternative Emulation Methods**: If QEMU continues to have issues, perhaps using a different emulator like FireSim or another tool that better supports PPC64LE could be an option.
+
+4. **Build Environment**: Verify that the build environment inside Docker is properly set up for cross-compiling. Maybe there are missing compiler flags or SDKs needed for JLink to run correctly under emulation.
+
+I should also consider whether this issue is specific to the Jenkins Dockerfile's setup or a more general problem with running OpenJDK in QEMU on PPC64LE. Testing a minimal example, like just installing OpenJDK and running JLink manually, might help isolate where the failure occurs.
+
+Additionally, looking at the GitLab issue linked by the user could provide clues. If that issue was about similar problems (like issues with floating-point instructions), then perhaps patches or workarounds have been applied to QEMU since that time. The user should check if they're using an affected version and update accordingly.
+
+In summary, the problem seems to be related to running JLink under QEMU's PPC64LE emulation, possibly due to FPU issues or missing dependencies. Updating QEMU, ensuring proper build environments, and checking for known bugs in the relevant versions could help resolve this.
+</think>
+
+The issue arises when running `jlink` under QEMU's PPC64LE emulation during a Docker build. The crash is likely due to an error in handling floating-point operations or missing dependencies.
+
+**Step-by-Step Explanation:**
+
+1. **Problem Identification**: The core dump indicates a crash during the execution of JLink, suggesting an issue with how JLink interacts with the environment provided by QEMU and Docker on PPC64LE.
+
+2. **Root Cause Analysis**:
+   - **QEMU Emulation Issues**: The emulator might not handle certain CPU features correctly, especially floating-point operations.
+   - **JDK Compatibility**: OpenJDK version may not be suitable for the emulated environment or lack necessary libraries.
+   - **Docker Configuration**: Missing resources or improper setup in Docker could prevent JLink from running smoothly.
+
+3. **Potential Solutions**:
+   - **Update QEMU**: Install the latest version to benefit from bug fixes and improved architecture support.
+   - **Check Dependencies**: Ensure all required system libraries are installed and compatible with the target architecture.
+   - **Alternative Tools**: Consider using different emulators or native environments if QEMU issues persist.
+
+4. **Implementation Steps**:
+   - Update QEMU and associated packages on both the host and Docker containers.
+   - Verify that the build environment includes necessary tools and libraries for JLink to function properly.
+   - Test with minimal setups to isolate where the failure occurs, aiding in pinpointing the exact issue.
+
+5. **Conclusion**: By updating software components, ensuring correct dependencies, and possibly adjusting emulation methods, the crash can be resolved, allowing successful execution of JLink within the Dockerized build process.
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