Getting INFO: task kworker/3:0:32775 blocked for more than 362 seconds

Saikat Bepari · Aug 2, 2024

Getting INFO: task kworker/3:0:32775 blocked for more than 362 seconds
Tainted: G C E 5.15.0-1059-raspi #62-ubuntu

till · Aug 2, 2024

You posted in the ISPConfig forum here, but that's neither an ISPConfig process nor ISPConfig-related.

From ChatGPT:

The error message you're seeing provides several pieces of information regarding a potential issue with your system. Let's break down each part:

### 1. `INFO: task kworker/3:0:32775 blocked for more than 362 seconds`
- **INFO**: This indicates the level of logging. "INFO" means this is informational, but in this context, it is pointing out a potential problem.
- **task kworker/3:0**: This refers to a kernel worker task. Kernel worker tasks (kworkers) handle various background tasks in the kernel.
- **32775**: This is the process ID (PID) of the kworker task.
- **blocked for more than 362 seconds**: This indicates that the kworker task has been unable to proceed with its work for more than 362 seconds. This suggests a potential deadlock or resource contention issue.

### 2. `Tainted: G C E 5.15.0-1059-raspi #62-ubuntu`
- **Tainted**: This means that the kernel has detected a condition that might indicate an unstable or unsupported state.
- **G**: Indicates that the kernel has been tainted because a proprietary (non-GPL) module has been loaded.
- **C**: Indicates that a staging driver has been loaded. Staging drivers are not yet ready for general use and may be unstable.
- **E**: Indicates a kernel error that has not been cleared.
- **5.15.0-1059-raspi**: This is the kernel version you are running, which is a Raspberry Pi specific build of the Linux kernel, version 5.15.0-1059.
- **#62-ubuntu**: This indicates the specific build number of the kernel by Ubuntu.

### Summary of the Issue
The error indicates that a kernel worker task (`kworker/3:0`) has been blocked for an extended period (over 362 seconds), which might suggest a serious problem such as a deadlock or resource contention. Additionally, the kernel is "tainted," indicating that there are non-standard or potentially unstable components loaded, which might contribute to or complicate the issue.

### Possible Causes and Solutions
1. **Resource Contention**: The kworker might be waiting for a resource (e.g., I/O operation, lock) that is held by another process or task.
- **Solution**: Check for any processes that might be using excessive CPU or I/O resources and consider stopping them.

2. **Kernel Bugs or Instabilities**: The "tainted" status suggests that non-standard or unstable components are loaded.
- **Solution**: Consider unloading any proprietary or staging modules if possible. Ensure all drivers and kernel modules are up-to-date and stable.

3. **Hardware Issues**: Sometimes, hardware problems can cause such issues, particularly on platforms like Raspberry Pi.
- **Solution**: Check for any hardware-related messages in the logs. Ensure the power supply and peripherals are functioning correctly.

4. **Kernel Version**: The issue might be specific to the particular kernel version you are using.
- **Solution**: Consider upgrading to a newer kernel version if available or downgrading to a previous stable version known to work well with your setup.

### Further Steps
- **Log Examination**: Look at system logs (`/var/log/syslog` or `/var/log/kern.log`) for more detailed error messages and context around the time this message appeared.
- **System Monitoring**: Use tools like `htop`, `iotop`, or `dmesg` to monitor system activity and identify potential bottlenecks or conflicts.
- **Community and Support**: Search for similar issues in community forums or support channels specific to your hardware and OS version (Raspberry Pi forums, Ubuntu forums, etc.).

Understanding and resolving such issues often require a combination of log examination, system monitoring, and sometimes trial and error with configuration changes.
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Getting INFO: task kworker/3:0:32775 blocked for more than 362 seconds

Saikat Bepari New Member

till Super Moderator Staff Member ISPConfig Developer

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Getting INFO: task kworker/3:0:32775 blocked for more than 362 seconds

Saikat Bepari New Member

till Super Moderator Staff Member ISPConfig Developer

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