From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 68AC5620 for ; Wed, 14 Aug 2024 00:10:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723594257; cv=none; b=V31xXrw8PqsV5UpWCsFH11fTojunjbhLK3pMznr48gHxrdzrky6FYhpqKAkq5oIJPEy2fQl4pda+wGEvC/bP17FEWFlRqF+X+yo1zVDGpeJQicNS/DXEGq5qeHoIVS9Ywk1rjaDUH14PIB+ybjbTUFcN7ISS9vx3mFzBcb6umQA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723594257; c=relaxed/simple; bh=c7r5OUmvaJQiZogtT5yLK0btcxbn7sNq/ZTe8Wov/6c=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=EILnJMWxgcZ3F0AVzNdOIJT86profcI+S0OlPmbIEaVXZNaMCECXH5zcrbb2r7Fj0DTjqg9S14SGkrM1q659GaC52HsRTd8PPe6o6+HKuK7rjpBm8flOdIHX3wYoq0vbco46dMrLHzIDvINOx6Zt/0P/MGIB/fPg41zw2MNrAJw= 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=IHoY/9Zr; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="IHoY/9Zr" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5883BC32782; Wed, 14 Aug 2024 00:10:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1723594256; bh=c7r5OUmvaJQiZogtT5yLK0btcxbn7sNq/ZTe8Wov/6c=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=IHoY/9ZrpQJOK/DT41cyEvhebsBWlOij3Ygq4bBZKodxAgT6oUW2b/vDDa6zk8qOu fpQPKjnhIQqiK1cGtDaHVQkhmBjQ5foFuCgAj3UTUFsQED4ojiCah5e3uI7salS6O9 Jw0iF3qWL7RATbT07B0ik4z4oV4DCHcA79KmX8fE= Date: Tue, 13 Aug 2024 17:10:55 -0700 From: Andrew Morton To: Florian Rommel Cc: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H . Peter Anvin" , Jason Wessel , Daniel Thompson , Douglas Anderson , Lorena Kretzschmar , Stefan Saecherl , Peter Zijlstra , Christophe JAILLET , Randy Dunlap , Masami Hiramatsu , Christophe Leroy , Geert Uytterhoeven , kgdb-bugreport@lists.sourceforge.net, x86@kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/2] kgdb: x86: fix breakpoint removal problems Message-Id: <20240813171055.f8805c1db539dfa18e80026b@linux-foundation.org> In-Reply-To: <20240811232208.234261-1-mail@florommel.de> References: <20240811232208.234261-1-mail@florommel.de> 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 Mon, 12 Aug 2024 01:22:06 +0200 Florian Rommel wrote: > This series fixes two problems with KGDB on x86 concerning the removal > of breakpoints, causing the kernel to hang. Note that breakpoint > removal is not only performed when explicitly deleting a breakpoint, > but also happens before continuing execution or single stepping. Neat. It would be nice to fix earlier kernels; for that it is desirable to identify a Fixes: target. From a quick look it appears this issue is more than a decade old, in which case I don't believe a Fixes: is needed - our request becomes "please backport to everything".