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CONFIG_DETECT_HUNG_TASK: Detect Hung Tasks

General informations

The Linux kernel configuration item CONFIG_DETECT_HUNG_TASK:

Help text

Say Y here to enable the kernel to detect "hung tasks", which are bugs that cause the task to be stuck in uninterruptible "D" state indefinitiley.

When a hung task is detected, the kernel will print the current stack trace (which you should report), but the task will stay in uninterruptible state. If lockdep is enabled then all held locks will also be reported. This feature has negligible overhead.

Hardware

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