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[2003:ea:8f38:4600:858c:dcb8:c991:8e09]) by smtp.googlemail.com with ESMTPSA id z15sm14933279wrv.39.2021.04.13.14.07.20 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 13 Apr 2021 14:07:22 -0700 (PDT) Subject: Re: [BUG]: WARNING: CPU: 5 PID: 0 at net/sched/sch_generic.c:442 dev_watchdog+0x24d/0x260 To: Xose Vazquez Perez , Realtek NIC , NETDEV ML , KERNEL ML References: <8ab3069a-734f-80ee-49a0-34e1399d44f1@gmail.com> From: Heiner Kallweit Message-ID: Date: Tue, 13 Apr 2021 23:07:17 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.9.1 MIME-Version: 1.0 In-Reply-To: <8ab3069a-734f-80ee-49a0-34e1399d44f1@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 13.04.2021 22:59, Xose Vazquez Perez wrote: > A non-recurring bug, on 5.11.12-300.fc34.x86_64 (Fedora kernel). > > Thanks. > > > 0c:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 06) > > [    2.968280] libphy: r8169: probed > [    2.968844] r8169 0000:0c:00.0 eth0: RTL8168e/8111e, 2c:41:38:9e:98:93, XID 2c2, IRQ 47 > [    2.968849] r8169 0000:0c:00.0 eth0: jumbo features [frames: 9194 bytes, tx checksumming: ko] > [    4.071966] RTL8211DN Gigabit Ethernet r8169-c00:00: attached PHY driver (mii_bus:phy_addr=r8169-c00:00, irq=IGNORE) > [    4.323834] r8169 0000:0c:00.0 eth0: Link is Down > [    6.729111] r8169 0000:0c:00.0 eth0: Link is Up - 1Gbps/Full - flow control rx/tx > > [106378.638739] ------------[ cut here ]------------ > [106378.638757] NETDEV WATCHDOG: eth0 (r8169): transmit queue 0 timed out This is a standard tx timeout and can have very different reasons. Few questions: - Is this a regression? If yes, can you bisect? - Can you reproduce it? If yes, which type of activity triggers it?