While running selftests bpf test_sysctl on stable rc 5.6 branch kernel on arm64 hikey device. The following warning was noticed. [ 1097.207013] NETDEV WATCHDOG: eth0 (asix): transmit queue 0 timed out [ 1097.387913] WARNING: CPU: 0 PID: 206 at /usr/src/kernel/net/sched/sch_generic.c:443 dev_watchdog+0x438/0x470 [ 1097.479820] Modules linked in: cls_bpf sch_fq sch_ingress test_bpf algif_hash af_alg wl18xx wlcore mac80211 libarc4 cfg80211 hci_uart snd_soc_audio_graph_card snd_soc_simple_card_utils btqca crct10dif_ce btbcm adv7511 wlcore_sdio bluetooth cec ecdh_generic ecc lima rfkill kirin_drm gpu_sched drm_kms_helper dw_drm_dsi drm fuse [last unloaded: trace_printk] [ 1097.684705] CPU: 0 PID: 206 Comm: jbd2/mmcblk0p9- Not tainted 5.6.13-rc1 #1 [ 1097.776526] Hardware name: HiKey Development Board (DT) [ 1097.865766] pstate: 60000005 (nZCv daif -PAN -UAO) [ 1097.954668] pc : dev_watchdog+0x438/0x470 [ 1098.042508] lr : dev_watchdog+0x438/0x470 ref: https://qa-reports.linaro.org/lkft/linux-stable-rc-5.6-oe/build/v5.6.12-119-gf1d28d1c7608/testrun/1430360/log On Tue, 5 May 2020 at 17:01, Naresh Kamboju <naresh.kamboju@xxxxxxxxxx> wrote: > > While running selftests bpf test_sysctl on stable rc 4.19 branch kernel > on arm64 hikey device. The following warning was noticed. > > [ 118.957395] test_bpf: #296 BPF_MAXINSNS: exec all MSH > [ 148.966435] ------------[ cut here ]------------ > [ 148.988349] NETDEV WATCHDOG: eth0 (asix): transmit queue 0 timed out > [ 149.000832] WARNING: CPU: 0 PID: 0 at > /usr/src/kernel/net/sched/sch_generic.c:466 dev_watchdog+0x2b4/0x2c0 > [ 149.016470] Modules linked in: test_bpf(+) wl18xx wlcore mac80211 > cfg80211 crc32_ce hci_uart crct10dif_ce btbcm snd_soc_audio_graph_card > bluetooth snd_soc_simple_card_utils adv7511 cec wlcore_sdio kirin_drm > dw_drm_dsi rfkill drm_kms_helper drm drm_panel_orientation_quirks fuse > [last unloaded: test_bpf] > [ 149.056507] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.19.121-rc1 #1 > [ 149.069594] Hardware name: HiKey Development Board (DT) > [ 149.081514] pstate: 80000005 (Nzcv daif -PAN -UAO) > [ 149.093062] pc : dev_watchdog+0x2b4/0x2c0 > [ 149.103862] lr : dev_watchdog+0x2b4/0x2c0 > [ 149.114575] sp : ffff000008003d10 > [ 149.124613] x29: ffff000008003d10 x28: 0000000000000002 > [ 149.136698] x27: 0000000000000001 x26: 00000000ffffffff > [ 149.148810] x25: 0000000000000180 x24: ffff800074c654b8 > [ 149.160891] x23: ffff800074c65460 x22: ffff8000748dd680 > [ 149.172993] x21: ffff00000974a000 x20: ffff800074c65000 > [ 149.185065] x19: 0000000000000000 x18: ffffffffffffffff > [ 149.197172] x17: 0000000000000000 x16: 0000000000000000 > [ 149.209243] x15: 0000000000000001 x14: ffff000009062cd8 > [ 149.221234] x13: 0000000045a6fc2a x12: ffff00000975b630 > [ 149.233166] x11: 00000000ffffffff x10: ffff00000974fa48 > [ 149.245023] x9 : ffff0000097e3000 x8 : ffff00000974fa48 > [ 149.256818] x7 : ffff000008173694 x6 : ffff800077ee62d0 > [ 149.268639] x5 : ffff800077ee62d0 x4 : 0000000000000000 > [ 149.280412] x3 : ffff800077eef6c8 x2 : 0000000000000103 > [ 149.292120] x1 : d13523b333b73d00 x0 : 0000000000000000 > [ 149.303783] Call trace: > [ 149.312481] dev_watchdog+0x2b4/0x2c0 > [ 149.322463] call_timer_fn+0xbc/0x3f0 > [ 149.332463] expire_timers+0x104/0x220 > [ 149.342493] run_timer_softirq+0xec/0x1a8 > [ 149.352784] __do_softirq+0x114/0x554 > [ 149.362668] irq_exit+0x144/0x150 > [ 149.372235] __handle_domain_irq+0x6c/0xc0 > [ 149.382633] gic_handle_irq+0x60/0xb0 > [ 149.392606] el1_irq+0xb4/0x130 > [ 149.402031] cpuidle_enter_state+0xbc/0x3f0 > [ 149.412572] cpuidle_enter+0x34/0x48 > [ 149.422539] call_cpuidle+0x44/0x78 > [ 149.432410] do_idle+0x228/0x2a8 > [ 149.441959] cpu_startup_entry+0x2c/0x30 > [ 149.452185] rest_init+0x25c/0x270 > [ 149.461821] start_kernel+0x468/0x494 > [ 149.471659] irq event stamp: 5706193 > [ 149.481376] hardirqs last enabled at (5706192): > [<ffff00000817376c>] console_unlock+0x424/0x638 > [ 149.496628] hardirqs last disabled at (5706193): > [<ffff000008081490>] do_debug_exception+0xf8/0x1d0 > [ 149.512207] softirqs last enabled at (5706160): > [<ffff0000080f94a8>] _local_bh_enable+0x28/0x48 > [ 149.527590] softirqs last disabled at (5706161): > [<ffff0000080f9bb4>] irq_exit+0x144/0x150 > [ 149.542410] ---[ end trace 4c7bd8e08a6a3d65 ]--- > [ 177.828500] jited:1 1366234 PASS > > ref: > https://qa-reports.linaro.org/lkft/linux-stable-rc-4.19-oe/build/v4.19.120-38-g2e3613309d93/testrun/1415357/log > > metadata: > git branch: linux-4.19.y > git repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git > make_kernelversion: 4.19.121-rc1 > kernel-config: > http://snapshots.linaro.org/openembedded/lkft/lkft/sumo/hikey/lkft/linux-stable-rc-4.19/530/config > -- Linaro LKFT https://lkft.linaro.org
