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 C35C91714C6 for ; Thu, 31 Jul 2025 01:19:54 +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=1753924795; cv=none; b=AthvbDPzauKPmM5kqNno9+7qjal6COWUAd0bkf/TMXahj4WB8CxwwkY4ymFiC1PWtQo7S8IAMA0pC5YirUvTdGINUkp43JrM7SA8rnj6Rk5TObD4aaRrYtYQParUbudXkjXUu7s0wb6EbZkZMUpEMz8HHrYpl/wHzIrRvdyHYFQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753924795; c=relaxed/simple; bh=tMDqfwD7elil5jwSZblV+U+YbHU/gJO8gdPiov7DLBw=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=gVWnBb0Q/BURRCQVrmOpi6QXj0SBs2Wlr5eU3utqKoIkqtS0oexC5kMt6Sor5KOiZfdrkFY5jiWx488FA95UZZaFaBYEQXNvV3zZAawz8abwWqzrF/9vT+IUx4ZcZYSKhJ8FEbBHBTocBVOSGJvxM+2k4DZFJfcSrJNQVWvS3sg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=nUZx5OTs; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="nUZx5OTs" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5AECCC4CEFA; Thu, 31 Jul 2025 01:19:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1753924794; bh=tMDqfwD7elil5jwSZblV+U+YbHU/gJO8gdPiov7DLBw=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=nUZx5OTsbMmhvEV3ehUifBs436AmhqSXhNgGZ0xgAVdRMHref/3nT1daftodul8aZ qwM6C9p6Kq77LPmSq6CrtJktAuKSzzF+nF/vw2SNykqK9kFVvppcKdSm0RdVyRCOqD 63PYioQM1AiqFOC+uAg1A4N5f3gnaGIHFvhH5rXP4sFmeipVuuBvPf8188wbrUig2N Ri6MdyVoxMrAwMnJBLdE4LgUs7BJHlsIRg91vvHyv5MICCyWe3HYUa1+XZ27fNabB5 zKI93d3pZaxf4lgfGKUwvkrV45Q7kKzldSemvy+IGoMz4w9C2WsKywKfIc9r7E2gXV ye2aDbQfaMyoA== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 70AB7383BF5F; Thu, 31 Jul 2025 01:20:11 +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 v2] netpoll: prevent hanging NAPI when netcons gets enabled From: patchwork-bot+netdevbpf@kernel.org Message-Id: <175392481025.2568749.840711867155556143.git-patchwork-notify@kernel.org> Date: Thu, 31 Jul 2025 01:20:10 +0000 References: <20250726010846.1105875-1-kuba@kernel.org> In-Reply-To: <20250726010846.1105875-1-kuba@kernel.org> To: Jakub Kicinski Cc: davem@davemloft.net, netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com, andrew+netdev@lunn.ch, horms@kernel.org, jasowang@redhat.com, zuozhijie@bytedance.com, mst@redhat.com, xuanzhuo@linux.alibaba.com, eperezma@redhat.com, leitao@debian.org, sdf@fomichev.me Hello: This patch was applied to netdev/net.git (main) by Jakub Kicinski : On Fri, 25 Jul 2025 18:08:46 -0700 you wrote: > Paolo spotted hangs in NIPA running driver tests against virtio. > The tests hang in virtnet_close() -> virtnet_napi_tx_disable(). > > The problem is only reproducible if running multiple of our tests > in sequence (I used TEST_PROGS="xdp.py ping.py netcons_basic.sh \ > netpoll_basic.py stats.py"). Initial suspicion was that this is > a simple case of double-disable of NAPI, but instrumenting the > code reveals: > > [...] Here is the summary with links: - [net,v2] netpoll: prevent hanging NAPI when netcons gets enabled https://git.kernel.org/netdev/net/c/2da4def0f487 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html