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 E582123EAA6; Wed, 30 Sep 2026 01:45:32 +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=1790732733; cv=none; b=fcF2sGVNxVfVEDWQ+/mfTSXaU46yf3sl+JGwaXo5kFbuYcdI4oqR+b65xACA9K18xDp6qZ5ZO9msVJsoqi0XfrxAR8DUAQaflOQPN95Tb+8EIcrIxgpK2j/2BkyLtRgtcZEAnPHd4I9AUJZGzxWJo5B0ifocpHu+wrFTnjHuNwQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790732733; c=relaxed/simple; bh=oYqIi495rAMQhi6h+vSrjdhsHcTJptJcAwm3flZqXZA=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ogQkOj7h0mCiYmewsigOtd8KUuszDX0U91LLEXKhPveZ4oPETM2faTqoDL0euEjroQ/nwuTVOpNLa5E466v8auyNE6PL/z9a1I/nChw6BbuDe16wMYpAdt6oVpuSCTUul7vyX6EQm64GXBy0JQ3I6XyFWrBk3m3Z3U5RaWbkBvc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=VmkH4gja; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="VmkH4gja" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F20541F000FF; Wed, 30 Sep 2026 01:45:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1790732732; bh=oYqIi495rAMQhi6h+vSrjdhsHcTJptJcAwm3flZqXZA=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=VmkH4gjaufsJUd9+6IjlXAO7CaFOF3EAlX8oknO7ARzt0NdIp8Jef/dMt7+2DUJKA WNHkrN08omaicHE7AUbTGJTL2McPBXfIJpBmr+c+JTDuifEOTeZV3ik3gwdKpyH3s6 Syu7eYqfWQQt6SPBmx+5tWTc52KBR+a2BX2WHDn3zHKrlHxpRmSkW3m6nx5PyDLOSW oqL/TxulXHBgOddDMXs+4dQSKu2RfZd3JA0siG42rbFB6IPbBDytQOlI6LMhBPl1/P 9PQ68tdDEfJTiD4bL09txrYM4w6rNF8qFCmMLaC0z3GankmeUWB5ka65PAaQg8Plne imqf7ZiwZc+XA== Date: Tue, 29 Sep 2026 18:45:31 -0700 From: Jakub Kicinski To: =?UTF-8?B?VGjDqW8=?= Lebrun Cc: Conor Dooley , Andrew Lunn , "David S. Miller" , Paolo Abeni , Simon Horman , Sean Anderson , Antoine Tenart , Eric Dumazet , Nicolas Ferre , Russell King , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Nicolai Buchwitz , Vladimir Kondratiev , Gregory CLEMENT , Tawfik Bayouk , Thomas Petazzoni , Maxime Chevallier , stable@vger.kernel.org Subject: Re: [PATCH net v2 1/3] net: macb: never give hardware a NULL RX buffer Message-ID: <20260929184531.36ac3dc3@kernel.org> In-Reply-To: <20260925-macb-close-v2-1-360efa565914@bootlin.com> References: <20260925-macb-close-v2-0-360efa565914@bootlin.com> <20260925-macb-close-v2-1-360efa565914@bootlin.com> 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=UTF-8 Content-Transfer-Encoding: quoted-printable On Fri, 25 Sep 2026 15:59:34 +0200 Th=C3=A9o Lebrun wrote: > Theoretical bugfix, never encountered in practice. To reproduce, > introduce memory pressure (less than 512 SKBs of free memory) and open > the interface. Since Linus is pushing back on our number of Fixes let's go for net-next with similar fixes until the merge window