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Date:   Tue, 26 Sep 2023 13:50:01 -0700
From:   Andrew Morton <akpm@linux-foundation.org>
To:     Baoquan He <bhe@redhat.com>
Cc:     linux-kernel@vger.kernel.org, kexec@lists.infradead.org,
        eric.devolder@oracle.com, vschneid@redhat.com,
        sourabhjain@linux.ibm.com
Subject: Re: [PATCH v3] Crash: add lock to serialize crash hotplug handling
Message-Id: <20230926135001.4eb6ca73b1a4aa6224355ad1@linux-foundation.org>
In-Reply-To: <20230926120905.392903-1-bhe@redhat.com>
References: <20230926120905.392903-1-bhe@redhat.com>
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On Tue, 26 Sep 2023 20:09:05 +0800 Baoquan He <bhe@redhat.com> wrote:

> Eric reported that handling corresponding crash hotplug event can be
> failed easily when many memory hotplug event are notified in a short
> period. They failed because failing to take __kexec_lock.

I'm assuming that this failure is sufficiently likely so as to  justify a -stable
backport of the fix.   Please let me know if this is incorrect.