Re: [PATCH v7 2/2] hung_task: Always print basic hung task info header

[Lance Yang]

On Tue, Aug 04, 2026 at 11:54:06AM -0400, Aaron Tomlin wrote:
>From: Petr Mladek <pmladek@xxxxxxxx>
>
>Currently, hung_task_info() completely suppresses any warning messages
>once the warning budget is reached. This leaves the system completely
>blind to any future hung tasks, even though we only wanted to suppress
>heavy process stack dumps.
>
>Modify hung_task_info() to always print the basic single-line error message
>about a hung task, regardless of whether the warning budget has been
>exhausted. Restrict only the verbose details (such as stack dumps,
>taint/release status, and blockers) to when the warning budget is intact
>or panic is triggered.
>
>Additionally, update the notice printed upon warning exhaustion to clarify
>that future reports will only omit process details rather than being completely
>suppressed.

I'd keep it simple and go with:

"
hung_task: always print the blocked-task line

Once the warning budget is exhausted, hung_task_info() stops printing any
per-task message. Detection still increments hung_task_detect_count and
emits trace_sched_process_hang(), but dmesg no longer shows which task is
blocked.

Move the "INFO: task ... blocked" line outside the budget check. Keep the
rest of the per-task report budgeted and update the exhaustion message
accordingly.
"

[...]

Cheers, Lance