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 1D2DF311958 for ; Sat, 19 Sep 2026 23:51:12 +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=1789861874; cv=none; b=rIUBNj4lvQkQst4Li8m0jagb7yBCaIwN0FbtmhihhRqCqPxlHYAE4EVPFJwSIGVjkFYw3Amk0cGaaDp/Wo9EQKEuvemF2CsNgzWYyuGXWLp8vUOXUsftndNFIe/3t6issyqia6utC6YxIaLixQVIrNGCvKVKkaR2fpQtTWOVrtw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789861874; c=relaxed/simple; bh=SPi+Qvnw+li5cqqkRuQeqB6TXsaLtISSABWhXTVITZA=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=DvbROSSCMLfT4l4kMpJJdOWwKXlTPlX1AZzfnYPGslzpbO4XvoBiOC106ghT9L6GH/CypiNs+TyAsnwmQokr0CjYeyP6mwbFLkd3poUH3ugR8N13z4NBegDw+Z1Iw49eTVct4KRRO4P1lnnIAOxCTIc0I5HOCr2h0312CplCYms= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HgBWElNH; 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="HgBWElNH" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A3DD51F000FF; Sat, 19 Sep 2026 23:51:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789861872; bh=/ev4jXxFTkiXpzfH4URbgcWSUf8fd3jKTLX/kzqjrd0=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=HgBWElNHPOkRN/PSXnMIZwrlNDIqU5utM7Wyvm8w97smfeBlA2faZI/3+XVNItbML t3xXWO0jkQHky7BiySDiCel8Py2RaQJ1KD1+vSv0dxM5aS5YqA+XqhhxsyxTfiFTOI 6RYrKEBmex/yErP6Zu0RlMp1XCu9N4r0VUnGXK75zxnoFu/zKCZf422hya5dO1svrJ EsEZ2/m3okei/qSmxTh6wxtHcHc3V1XXzVcneHktJBdIDNeLchy+U5RvuD8LTbWkGL /mtvo3jIRRe4LZkylyG2ceqWX/Sz4NehqxvWDOpXxY5lA88YxDR/AERJ3saDOMMkhT ifrGoiRaTFGyg== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 568B8392447F; Sat, 19 Sep 2026 23:50:06 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net v3 1/2] net/sched: sch_hfsc: bound the classify inner-filter walk with a drift budget From: patchwork-bot+netdevbpf@kernel.org Message-Id: <178986180515.1496100.14100930465908315089.git-patchwork-notify@kernel.org> Date: Sat, 19 Sep 2026 23:50:05 +0000 References: In-Reply-To: To: Jamal Hadi Salim Cc: netdev@vger.kernel.org, jiri@resnulli.us, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, victor@mojatatu.com, hybris@mojatatu.ai, sashiko-bot@kernel.org Hello: This series was applied to netdev/net.git (main) by Jakub Kicinski : On Thu, 17 Sep 2026 06:57:32 -0400 you wrote: > hfsc_classify() applies the "filter may only point downwards" level check > only when the filter result carries no bound class. A filter created with > a flowid gets res.class set once at bind time, so the check never runs for > it during classification. hfsc_adjust_levels() can later raise a class's > level without revalidating existing bindings, leaving two binds that were > each legal at bind time pointing at each other; the classify walk then > bounces between two interior classes forever with the qdisc lock held and > BH disabled — a soft lockup from a single packet. The stuck walk trips > the watchdog: > > [...] Here is the summary with links: - [net,v3,1/2] net/sched: sch_hfsc: bound the classify inner-filter walk with a drift budget https://git.kernel.org/netdev/net/c/8a60ade2277e - [net,v3,2/2] selftests: tc-testing: add a lateral-drift hfsc classify-walk test https://git.kernel.org/netdev/net/c/1e24c4f2ee44 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html