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Message-ID: <YgY7LW8WLtTCZUu0@Red> Date: Fri, 11 Feb 2022 11:32:13 +0100 From: Corentin Labbe <clabbe.montjoie@...il.com> To: hkallweit1@...il.com, swsd@...ltek.com, davem@...emloft.net, kuba@...nel.org, thierry.reding@...il.com, jonathanh@...dia.com Cc: linux-tegra@...r.kernel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: NETDEV WATCHDOG: enp1s0 (r8169): transmit queue 0 timed out Hello On my tegra124-jetson-tk1, I always got: [ 1311.064826] ------------[ cut here ]------------ [ 1311.064880] WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:477 dev_watchdog+0x2fc/0x300 [ 1311.064976] NETDEV WATCHDOG: enp1s0 (r8169): transmit queue 0 timed out [ 1311.065011] Modules linked in: [ 1311.065074] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.16.7-dirty #7 [ 1311.065116] Hardware name: NVIDIA Tegra SoC (Flattened Device Tree) [ 1311.065177] [<c01103e4>] (unwind_backtrace) from [<c010ade0>] (show_stack+0x10/0x14) [ 1311.065253] [<c010ade0>] (show_stack) from [<c0bbe884>] (dump_stack_lvl+0x40/0x4c) [ 1311.065322] [<c0bbe884>] (dump_stack_lvl) from [<c0122d6c>] (__warn+0xd0/0x12c) [ 1311.065379] [<c0122d6c>] (__warn) from [<c0bb8c48>] (warn_slowpath_fmt+0x90/0xb4) [ 1311.065434] [<c0bb8c48>] (warn_slowpath_fmt) from [<c0a0f0f0>] (dev_watchdog+0x2fc/0x300) [ 1311.065493] [<c0a0f0f0>] (dev_watchdog) from [<c01a8ab0>] (call_timer_fn+0x34/0x1a8) [ 1311.065554] [<c01a8ab0>] (call_timer_fn) from [<c01a8e50>] (__run_timers.part.0+0x22c/0x328) [ 1311.065599] [<c01a8e50>] (__run_timers.part.0) from [<c01a8f84>] (run_timer_softirq+0x38/0x68) [ 1311.065648] [<c01a8f84>] (run_timer_softirq) from [<c0101394>] (__do_softirq+0x124/0x3cc) [ 1311.065732] [<c0101394>] (__do_softirq) from [<c0129ff4>] (irq_exit+0xa4/0xd4) [ 1311.065818] [<c0129ff4>] (irq_exit) from [<c0100b90>] (__irq_svc+0x50/0x80) [ 1311.065860] Exception stack(0xc1101ed8 to 0xc1101f20) [ 1311.065884] 1ec0: 00000000 00000001 [ 1311.065913] 1ee0: c110a800 00000060 00000001 eed889f8 c121eaa0 418a949d 00000001 00000131 [ 1311.065940] 1f00: 00000001 00000131 00000000 c1101f28 c08bbe20 c08bbee8 60000113 ffffffff [ 1311.065962] [<c0100b90>] (__irq_svc) from [<c08bbee8>] (cpuidle_enter_state+0x270/0x480) [ 1311.066031] [<c08bbee8>] (cpuidle_enter_state) from [<c08bc15c>] (cpuidle_enter+0x50/0x54) [ 1311.066078] [<c08bc15c>] (cpuidle_enter) from [<c015a658>] (do_idle+0x1e0/0x298) [ 1311.066133] [<c015a658>] (do_idle) from [<c015a9e0>] (cpu_startup_entry+0x18/0x1c) [ 1311.066174] [<c015a9e0>] (cpu_startup_entry) from [<c1000fc8>] (start_kernel+0x678/0x6bc) [ 1311.066242] ---[ end trace 3df1a997f30c7eb8 ]--- [ 1311.083269] r8169 0000:01:00.0 enp1s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100). [ 2671.118597] r8169 0000:01:00.0 enp1s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100). [27521.391461] r8169 0000:01:00.0 enp1s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100). [47441.629280] r8169 0000:01:00.0 enp1s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100). [49046.691475] r8169 0000:01:00.0 enp1s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100). [53081.713430] r8169 0000:01:00.0 enp1s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100). [55101.737951] r8169 0000:01:00.0 enp1s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100). [59351.771382] r8169 0000:01:00.0 enp1s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100). [60491.797371] r8169 0000:01:00.0 enp1s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100). [61351.805499] r8169 0000:01:00.0 enp1s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100). [69631.911327] r8169 0000:01:00.0 enp1s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100). [71246.958267] r8169 0000:01:00.0 enp1s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100). [86522.110241] r8169 0000:01:00.0 enp1s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100). [88507.174307] r8169 0000:01:00.0 enp1s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100). [104612.315286] r8169 0000:01:00.0 enp1s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100). [132797.695339] r8169 0000:01:00.0 enp1s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100). This happen since at least 5.10. Any idea on how to debug this ? Regards
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