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Date: Sun, 2 Feb 2020 16:56:41 -0500
From: Sasha Levin <sashal@...nel.org>
To: Xiaochen Shen <xiaochen.shen@...el.com>
Cc: stable@...r.kernel.org, gregkh@...uxfoundation.org,
tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, hpa@...or.com,
tony.luck@...el.com, fenghua.yu@...el.com,
reinette.chatre@...el.com, x86@...nel.org,
linux-kernel@...r.kernel.org, pei.p.jia@...el.com,
Borislav Petkov <bp@...e.de>
Subject: Re: [PATCH 4.19 1/3] x86/resctrl: Fix use-after-free when deleting
resource groups
On Sun, Feb 02, 2020 at 06:02:17AM +0800, Xiaochen Shen wrote:
>commit b8511ccc75c033f6d54188ea4df7bf1e85778740 upstream.
>
>A resource group (rdtgrp) contains a reference count (rdtgrp->waitcount)
>that indicates how many waiters expect this rdtgrp to exist. Waiters
>could be waiting on rdtgroup_mutex or some work sitting on a task's
>workqueue for when the task returns from kernel mode or exits.
I've queued up the 4.19 and 4.14 backports, thanks!
--
Thanks,
Sasha
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