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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
Date: Tue, 18 Aug 2026 11:41:58 -0700	[thread overview]
Message-ID: <20260818114158.cc20b0cfcbe730a30597b466@linux-foundation.org> (raw)
In-Reply-To: <20260818163806.17460-1-include@grrlz.net>

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.

  parent reply	other threads:[~2026-08-18 18:41 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-18 16:38 Bradley Morgan
2026-08-18 16:38 ` [PATCH v6 1/6] panic: fix redirect CPU race in panic_try_force_cpu() Bradley Morgan
2026-08-18 16:38 ` [PATCH v6 2/6] panic: flatten nmi_panic control flow Bradley Morgan
2026-08-18 16:38 ` [PATCH v6 3/6] panic: fix va_list reuse in panic_try_force_cpu() Bradley Morgan
2026-08-18 16:38 ` [PATCH v6 4/6] panic: restore variable arguments to nmi_panic() Bradley Morgan
2026-08-18 16:38 ` [PATCH v6 5/6] panic: allow force_cpu redirect from an NMI Bradley Morgan
2026-08-18 16:38 ` [PATCH v6 6/6] panic: kill the "buffer unavailable" redirect fallback Bradley Morgan
2026-08-18 18:41 ` Andrew Morton [this message]
2026-08-18 18:45   ` [PATCH v6 0/6] panic: fix panic_force_cpu= redirect races and NMI bypass Bradley Morgan

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