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Date: Tue, 18 Aug 2026 11:41:58 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Bradley Morgan <include@grrlz.net>
Cc: Petr Mladek <pmladek@suse.com>, Jinchao Wang <wangjinchao600@gmail.com>,
 Feng Tang <feng.tang@linux.alibaba.com>, Rio <rioo.tsukatsukii@gmail.com>,
 Pnina Feder <pnina.feder@mobileye.com>, Petr Pavlu <petr.pavlu@suse.com>,
 Sergey Senozhatsky <senozhatsky@chromium.org>,
 linux-kernel@vger.kernel.org, Sashiko <sashiko-bot@kernel.org>,
 stable@vger.kernel.org
Subject: Re: [PATCH v6 0/6] panic: fix panic_force_cpu= redirect races and
 NMI bypass
Message-Id: <20260818114158.cc20b0cfcbe730a30597b466@linux-foundation.org>
In-Reply-To: <20260818163806.17460-1-include@grrlz.net>
References: <20260818163806.17460-1-include@grrlz.net>
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On Tue, 18 Aug 2026 16:38:00 +0000 Bradley Morgan <include@grrlz.net> wrote:

> The panic_force_cpu= parameter redirects a panic to a specific CPU so
> the crash kernel runs there. The redirect code in panic_try_force_cpu()
> had two races and an NMI bypass, all found by Sashiko. This series
> closes them and kills one more hack that the rework turned up.

Thanks.  Sashiko had more to say:
	https://sashiko.dev/#/patchset/20260818163806.17460-1-include@grrlz.net

In the first one it suggests va_copy(), but perhaps this would be
better addressed with va_end/va_start.