Bug#925557: linux-image-4.19.0-4-amd64: kworker CPU hog, abundance of interrupts on PCI-E port with ath9k wireless card

To: 925557@bugs.debian.org
Subject: Bug#925557: linux-image-4.19.0-4-amd64: kworker CPU hog, abundance of interrupts on PCI-E port with ath9k wireless card
From: Vladimir K <pzs-fs@yandex.ru>
Date: Tue, 26 Mar 2019 23:19:36 +0300
Message-id: <[🔎] 9539181553631576@sas2-a271c7163765.qloud-c.yandex.net>
Reply-to: Vladimir K <pzs-fs@yandex.ru>, 925557@bugs.debian.org
References: <[🔎] 9988861553626440@myt4-bf1cdac1d2eb.qloud-c.yandex.net>

Tried booting into old kernels from Debian Snapshots, down to linux-image-4.14.0-2-amd64. Problem persists. Either I just didn't notice it before, or the problem originated from something other than kernel.

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References:
- Bug#925557: linux-image-4.19.0-4-amd64: kworker CPU hog, abundance of interrupts on PCI-E port with ath9k wireless card
  - From: Vladimir K <pzs-fs@yandex.ru>

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