From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 79178C433F5 for ; Thu, 3 Feb 2022 05:10:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236541AbiBCFKL (ORCPT ); Thu, 3 Feb 2022 00:10:11 -0500 Received: from ams.source.kernel.org ([145.40.68.75]:46730 "EHLO ams.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236536AbiBCFKL (ORCPT ); Thu, 3 Feb 2022 00:10:11 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 1615CB832B4 for ; Thu, 3 Feb 2022 05:10:10 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id CD6D7C340EB; Thu, 3 Feb 2022 05:10:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1643865008; bh=NxiGNZBkbaGfMEG3tdMANsqIsecHxBqvYKgTbB946R8=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=nvYUfuw/buj8q2jhF1fppkFvqB5eVMMFNxmPwT9fP/vHj11ceO73hCpGGw2Vvh5+0 WQNNBBpXNQzi0S+HrO5yQJmXLFJWljCfWUTTouDPMudM6KsLDaT8DJnhbl4oY8Df5d p2jr3zvhfFRpcWDJMWntPW+xYfW4jEv2Gwo/Q3FyPQPJ0adnNVZElh98W2nZ/od4Bb iqR9W7CBOeYOpnha+gzTA6HNOewwg4qbIsVC6QscljxwrqUghgZksiJGfD+DSz3Bkt SYNe0njTGTns0EkBz+5xgLy0W2B/yH/TIPs/L7363fmEIDtvmypVJ7WL69Mwnuca1p LWRqre10Uyrzw== Received: from aws-us-west-2-korg-oddjob-1.ci.codeaurora.org (localhost.localdomain [127.0.0.1]) by aws-us-west-2-korg-oddjob-1.ci.codeaurora.org (Postfix) with ESMTP id B8335E6BB3D; Thu, 3 Feb 2022 05:10:08 +0000 (UTC) Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net] net, neigh: Do not trigger immediate probes on NUD_FAILED from neigh_managed_work From: patchwork-bot+netdevbpf@kernel.org Message-Id: <164386500875.26576.7595670637817760927.git-patchwork-notify@kernel.org> Date: Thu, 03 Feb 2022 05:10:08 +0000 References: <20220201193942.5055-1-daniel@iogearbox.net> In-Reply-To: <20220201193942.5055-1-daniel@iogearbox.net> To: Daniel Borkmann Cc: davem@davemloft.net, kuba@kernel.org, roopa@nvidia.com, edumazet@google.com, dsahern@kernel.org, john.fastabend@gmail.com, netdev@vger.kernel.org, syzbot+5239d0e1778a500d477a@syzkaller.appspotmail.com Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello: This patch was applied to netdev/net.git (master) by Jakub Kicinski : On Tue, 1 Feb 2022 20:39:42 +0100 you wrote: > syzkaller was able to trigger a deadlock for NTF_MANAGED entries [0]: > > kworker/0:16/14617 is trying to acquire lock: > ffffffff8d4dd370 (&tbl->lock){++-.}-{2:2}, at: ___neigh_create+0x9e1/0x2990 net/core/neighbour.c:652 > [...] > but task is already holding lock: > ffffffff8d4dd370 (&tbl->lock){++-.}-{2:2}, at: neigh_managed_work+0x35/0x250 net/core/neighbour.c:1572 > > [...] Here is the summary with links: - [net] net, neigh: Do not trigger immediate probes on NUD_FAILED from neigh_managed_work https://git.kernel.org/netdev/net/c/4a81f6da9cb2 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html