From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from outpost1.zedat.fu-berlin.de (outpost1.zedat.fu-berlin.de [130.133.4.66]) (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 8BADA42070; Fri, 27 Dec 2024 11:48:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=130.133.4.66 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735300131; cv=none; b=IdY6FxaIuBsBvtuZOG7xRJrJUw31girgxFiD/l7W30yTBVuv2+ltdJzml7W1t7KS8I2UQrACXNWImvCyVd3oegGTs7TZX191LF/Hkulixa/S5vllV4jOzQnEGpUPj468RdN9QgiiBP63TF0BFlwxWc7UnGZYklx7iYTLhDwnMfU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735300131; c=relaxed/simple; bh=NyIjsxP7hLdhQx5rqI8thDofmltetYsKWrqF5omzlvc=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=r0ZIvMuQZQKkL6SeAzrzYgaL4KG9/cjo8X1zPXMn7YMY4/PltSlA4Ov122yWyk+hSO1Yt83UmdDKXisDbjI4SPdzu5sX+O5jToqBAlTQT2TPtz/3atVKrKxgolaTd+rqA3xyQPsqrmrhX77xfF8riPBpN3VK9yqMcmcSbH+pphM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=physik.fu-berlin.de; spf=pass smtp.mailfrom=zedat.fu-berlin.de; dkim=pass (2048-bit key) header.d=fu-berlin.de header.i=@fu-berlin.de header.b=mvdk0sz/; arc=none smtp.client-ip=130.133.4.66 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=physik.fu-berlin.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=zedat.fu-berlin.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=fu-berlin.de header.i=@fu-berlin.de header.b="mvdk0sz/" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=fu-berlin.de; s=fub01; h=MIME-Version:Content-Transfer-Encoding: Content-Type:References:In-Reply-To:Date:Cc:To:From:Subject:Message-ID:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=AnrCj2REncAYtqLUkwdLwQJ4yHzFo8R8XcPdjRYdx+w=; t=1735300127; x=1735904927; b=mvdk0sz/JAtKgMgMFfXMSCsuuo5YMCCFXLIPiukuVTLiXb7fugvA3OWsfaS6UGa8FqFCTC2LDRJ WhZ9LUO2NphxBIYmYoAaVBbpiTrfODELCeaDzrk0hAFuNO4MBJ8GQ9TgSm76lXvaLuce3P+RoWr4i EYYbEqOLzmYKWg9iCl5Nv4f/ZugTsir6491wHq3SVDjfxGx/Rvuu6QCM1uFKiMzclS+3tyU2HQQqi C4zNN9bn7NP7bpLiy2eoj3EaTgv9vWaSYyL6xQg9Y4EeAKShdLiObdnXAjgFTbNghPattgnJarxmu yuscnB0uiJu+nLQrbKVQrWXJJCx91WnGw07A==; Received: from inpost2.zedat.fu-berlin.de ([130.133.4.69]) by outpost.zedat.fu-berlin.de (Exim 4.98) with esmtps (TLS1.3) tls TLS_AES_256_GCM_SHA384 (envelope-from ) id 1tR8pa-00000001IWy-0qbB; Fri, 27 Dec 2024 12:48:38 +0100 Received: from dynamic-077-191-186-045.77.191.pool.telefonica.de ([77.191.186.45] helo=suse-laptop.fritz.box) by inpost2.zedat.fu-berlin.de (Exim 4.98) with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (envelope-from ) id 1tR8pZ-00000002CQz-48LF; Fri, 27 Dec 2024 12:48:38 +0100 Message-ID: <4e3a93da86414add80784db70ae2ebe255ae75ca.camel@physik.fu-berlin.de> Subject: Re: Kernel Oops on alpha with kernel version >=6.9.x From: John Paul Adrian Glaubitz To: Magnus Lindholm , "Maciej W. Rozycki" Cc: "Paul E. McKenney" , Michael Cree , rcu@vger.kernel.org, linux-alpha@vger.kernel.org Date: Fri, 27 Dec 2024 12:48:37 +0100 In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.54.2 Precedence: bulk X-Mailing-List: linux-alpha@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Original-Sender: glaubitz@physik.fu-berlin.de X-ZEDAT-Hint: PO Hi Magnus, On Fri, 2024-12-27 at 11:42 +0100, Magnus Lindholm wrote: > >=20 > I've done some more testing last couple of days and it seems like > applying the one-liner "fix" to smp.c (alignment of csd_stack in > function smp_call_function_single) is sufficient to mitigate both rcu > related bugs (the bugs are not even rcu related). Could you post the patch? I would like to give it a try myself. Adrian --=20 .''`. John Paul Adrian Glaubitz : :' : Debian Developer `. `' Physicist `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913