From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id ED42A46C844; Tue, 22 Sep 2026 23:22:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790119361; cv=none; b=fKFkSVL1dh6tcY3WoDVHe4Hm7YfKA35mHvnmZiYmoTvqJAlV/f2oQAXnFUw6TVx09GF0vnG3yDj837W7Bv2gHNIOEfv/l5b6bm56PMP656mE/aJYTacAkP+kEY0VlXX0PCpFcVSvU/jOCb4/MYF5F1NCSydz6FvkpwPpbG5OOSs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790119361; c=relaxed/simple; bh=PgefHW6QVEmndI6Pen8dca81L1s3Qu0KxcXBfMzPXEE=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=TJzY86iFP2AYPCTV6njvnrs8tUF6z7xhhq7GT9FONg1uqy2SGvHb2zbd0xIwLVV9NuNVI5jHKZ4mVetfsWBzadgA/U/xI7jxzGZ0A1w373n3p8jR2D4v2wHvXcaKsqm2VmizH1Xs0I28HXV8Dd14oHMIQS0Px2yHPhyk5ICF8kk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=TMayVCBU; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="TMayVCBU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3A9791F000FF; Tue, 22 Sep 2026 23:22:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1790119359; bh=wKBWlI33FhDSPg+OguzLJJtT0RSFclrc6CAnfnG4Gpg=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=TMayVCBUUn2+3j7CQaLgmKWABkGrgi7VvoY7sV0yzsczNJz7RhDIMQJ+hqSyfa7Nw TB/Ew/ajk/y+dOqwHcEZpP56tiwTQAe22/ZhB4gdkVHgRQBpqB9JhvFZvnnIHCc+la ru7gS9EfY9+i7FMZ2kIXX0ehv0gP5uKad8V900j0= Date: Tue, 22 Sep 2026 16:22:38 -0700 From: Andrew Morton To: Bradley Morgan Cc: Petr Mladek , Jinchao Wang , Craig Lamparter , Wim Van Sebroeck , Guenter Roeck , linux-watchdog@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v7 0/6] panic: fix panic_force_cpu= redirect races and NMI bypass Message-Id: <20260922162238.5779a90e2d34853fc9fcc323@linux-foundation.org> In-Reply-To: <6FCE58E3-B367-4258-8852-EB04335F9590@mainlining.org> References: <20260916182957.7788-1-brads@mainlining.org> <6FCE58E3-B367-4258-8852-EB04335F9590@mainlining.org> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Tue, 22 Sep 2026 15:41:52 +0100 Bradley Morgan wrote: > On 22 September 2026 13:35:54 BST, Petr Mladek wrote: > >On Wed 2026-09-16 18:29:51, Bradley Morgan 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. > > > >IMHO, this version is ready to go. It would be great to fix the commit > >message in the 4th patch but I think that Andrew could do the fixup. > > > > Akpm? Up for it? Done, thanks.