linux-kernel - RE: [PATCH v2] ACPI: APEI: do not add task_work to kernel thread to avoid memory leak

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Message-ID: <SJ1PR11MB6083F02E240B6E8B8CEE1EAFFC569@SJ1PR11MB6083.namprd11.prod.outlook.com>
Date:   Fri, 30 Sep 2022 15:52:38 +0000
From:   "Luck, Tony" <tony.luck@...el.com>
To:     Shuai Xue <xueshuai@...ux.alibaba.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        James Morse <james.morse@....com>,
        "baicar@...amperecomputing.com" <baicar@...amperecomputing.com>
CC:     Len Brown <lenb@...nel.org>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Jarkko Sakkinen <jarkko@...nel.org>,
        HORIGUCHI NAOYA(堀口 直也) 
        <naoya.horiguchi@....com>,
        "linmiaohe@...wei.com" <linmiaohe@...wei.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Stable <stable@...r.kernel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        "Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
        "cuibixuan@...ux.alibaba.com" <cuibixuan@...ux.alibaba.com>,
        "baolin.wang@...ux.alibaba.com" <baolin.wang@...ux.alibaba.com>,
        "zhuo.song@...ux.alibaba.com" <zhuo.song@...ux.alibaba.com>
Subject: RE: [PATCH v2] ACPI: APEI: do not add task_work to kernel thread to
 avoid memory leak

> Yes, the error is actually handled in workqueue. I think the point is that the
> synchronous exception signaled by synchronous external abort must be handled
> synchronously, otherwise, it will be signaled again.

Ok. Got it now. Thanks.

For Rafael:

Reviewed-by: Tony Luck <tony.luck@...el.com>

-Tony