linux-kernel - Re: [REGRESSION] bisected: perf: hang when using async-profiler caused by perf: Fix the POLL

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Message-ID: <9f94b9b5-0a8a-4f37-8355-0b5461d6ad30@pm.me>
Date: Mon, 03 Nov 2025 01:24:44 +0000
From: Harvey Tite <HarvT@...me>
To: dapeng1.mi@...ux.intel.com
Cc: linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org, octavia.togami@...il.com, peterz@...radead.org, regressions@...ts.linux.dev, stable@...r.kernel.org
Subject: Re: [REGRESSION] bisected: perf: hang when using async-profiler caused by perf: Fix the POLL_HUP delivery breakage

Hello hope everyone is well, just following up on this bug report, this 
appears to have been patched here 
https://lore.kernel.org/lkml/20251015051828.12809-1-dapeng1.mi@linux.intel.com/ 
thanks to Dapeng Mi; however, the patch email does not appear to have 
CCed the regressions or stable list.

On 2025/10/15 Peter Zijlstra wrote:

 > So yeah, I suppose this works. Let me go queue this up.

In regard to the patch, hence I assume the patch is approved for 
implementation in future versions.

This is a critical bug causing widespread irrecoverable system freezes 
reported by many users with many differing setups, including myself. 
Notably it is being triggered by a minecraft mod called spark with at 
least 150 million aggregate downloads 
(https://www.curseforge.com/minecraft/mc-mods/spark 
https://github.com/lucko/spark/issues/530).

If at all possible I would love to request that this please be 
implemented/backported to kernels 6.17 and 6.18.

Thank you.