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[24.6.151.244]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-23506bca137sm18118685ad.10.2025.05.29.18.12.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 29 May 2025 18:12:28 -0700 (PDT) Date: Thu, 29 May 2025 18:12:25 -0700 From: Joe Damato To: Jakub Kicinski Cc: Jacob Keller , John , "David S. Miller" , Eric Dumazet , Paolo Abeni , Simon Horman , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [Bug] "possible deadlock in rtnl_newlink" in Linux kernel v6.13 Message-ID: Mail-Followup-To: Joe Damato , Jakub Kicinski , Jacob Keller , John , "David S. Miller" , Eric Dumazet , Paolo Abeni , Simon Horman , netdev@vger.kernel.org, linux-kernel@vger.kernel.org References: <20250529171640.54f1ecc6@kernel.org> 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=us-ascii Content-Disposition: inline In-Reply-To: <20250529171640.54f1ecc6@kernel.org> On Thu, May 29, 2025 at 05:16:40PM -0700, Jakub Kicinski wrote: > On Thu, 29 May 2025 16:50:17 -0700 Joe Damato wrote: > > @@ -1262,6 +1258,11 @@ static void e1000_remove(struct pci_dev *pdev) > > bool disable_dev; > > > > e1000_down_and_stop(adapter); > > + > > + /* Only kill reset task if adapter is not resetting */ > > + if (!test_bit(__E1000_RESETTING, &adapter->flags)) > > + cancel_work_sync(&adapter->reset_task); > > + > > e1000_release_manageability(adapter); > > > > unregister_netdev(netdev); > > LGTM, FWIW. > For extra points you can move it after the unregister_netdev(), > the existing code cancels the work but netdev may still be up > and kick it back in.. Good idea, thanks. I'll post something to the list, but I don't have a reproducer to test. I'm a noob with syzbot, but maybe there's a way to trigger it to re-run with a posted patch?