My RPi4 running latest commit gave a kernel oops recently and I am not sure what to make of it.
Two questions:
- Any insights into the cause of the crash?
- Why does the kernel get categorized as Tainted?
[46397.949622] ------------[ cut here ]------------
[46397.954276] NETDEV WATCHDOG: eth0 (bcmgenet): transmit queue 0 timed out
[46397.961049] WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:467 dev_watchdog+0x2c8/0x2d0
[46397.969317] Modules linked in: xt_connlimit pppoe ppp_async nf_conncount iptable_nat brcmfmac xt_state xt_nat xt_helper xt_conntrack xt_connmark xt_connbytes xt_REDIRECT xt_MASQUERADE xt_FLOWOFFLOAD xt_CT wireguard pppox ppp_generic nf_nat nf_flow_table nf_conntrack libchacha20poly1305 libblake2s ipt_REJECT chacha_neon cfg80211 ax88179_178a xt_time xt_tcpudp xt_tcpmss xt_statistic xt_recent xt_quota xt_pkttype xt_physdev xt_owner xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_ecn xt_dscp xt_comment xt_cgroup xt_addrtype xt_TCPMSS xt_LOG xt_HL xt_DSCP xt_CLASSIFY usbnet usbhid slhc sch_cake rtl8150 r8152 poly1305_neon nf_reject_ipv4 nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 macvlan libcurve25519_generic libchacha libblake2s_generic iptable_raw iptable_mangle iptable_filter ipt_ECN ip_tables hid_generic crc_ccitt compat brcmutil br_netfilter sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_tcindex cls_route cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred
[46397.969686] act_gact snd_bcm2835(C) hid evdev nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 ifb ip6_udp_tunnel udp_tunnel veth snd_rawmidi snd_seq_device snd_pcm_oss snd_mixer_oss snd_hwdep snd_compress snd_pcm snd_timer snd soundcore nls_utf8 vfat fat nls_iso8859_1 nls_cp437
[46398.086432] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G C 5.10.84 #0
[46398.093829] Hardware name: Raspberry Pi 4 Model B Rev 1.1 (DT)
[46398.099666] pstate: 60400005 (nZCv daif +PAN -UAO -TCO BTYPE=--)
[46398.105675] pc : dev_watchdog+0x2c8/0x2d0
[46398.109686] lr : dev_watchdog+0x2c8/0x2d0
[46398.113692] sp : ffffffc010b33d70
[46398.117003] x29: ffffffc010b33d70 x28: 0000000000000140
[46398.122320] x27: 00000000ffffffff x26: 0000000000000000
[46398.127636] x25: 0000000000000001 x24: 0000000000000000
[46398.132951] x23: ffffff8040c40480 x22: 0000000000000001
[46398.138265] x21: ffffffc0109b6000 x20: ffffff8040c40000
[46398.143580] x19: 0000000000000000 x18: 0000000000000118
[46398.148894] x17: 0000000000000000 x16: 0000000000000000
[46398.154208] x15: ffffffc0109c7790 x14: 0000000000000348
[46398.159522] x13: 0000000000000118 x12: ffffffc010b33a48
[46398.164836] x11: ffffffc010a1f790 x10: 00000000fffff000
[46398.170151] x9 : ffffffc010a1f790 x8 : 0000000000000000
[46398.175466] x7 : ffffffc0109c7790 x6 : 0000000000000002
[46398.180779] x5 : 0000000000000000 x4 : 0000000000000000
[46398.186094] x3 : ffffffc0109b8f8c x2 : 0000000000000004
[46398.191408] x1 : 0000000000000005 x0 : 000000000000003c
[46398.196723] Call trace:
[46398.199169] dev_watchdog+0x2c8/0x2d0
[46398.202834] call_timer_fn.constprop.0+0x24/0x80
[46398.207451] __run_timers.part.0+0x240/0x280
[46398.211720] run_timer_softirq+0x3c/0x74
[46398.215641] _stext+0x124/0x290
[46398.218783] irq_exit+0xa0/0xf0
[46398.221926] __handle_domain_irq+0x80/0xe0
[46398.226025] gic_handle_irq+0x78/0xa0
[46398.229686] el1_irq+0xcc/0x180
[46398.232826] arch_cpu_idle+0x18/0x30
[46398.236401] default_idle_call+0x20/0x70
[46398.240324] do_idle+0x21c/0x280
[46398.243550] cpu_startup_entry+0x28/0x60
[46398.247472] secondary_start_kernel+0x128/0x150
[46398.252000] ---[ end trace 14199b63182cfbd7 ]---
Full dmesg
[ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd083]
[ 0.000000] Linux version 5.10.84 (squishy@quadruple) (aarch64-openwrt-linux-musl-gcc (OpenWrt GCC 11.2.0 r0+18161-8831bfab8a) 11.2.0, GNU ld (GNU Binutils) 2.37) #0 SMP Wed Dec 8 11:15:57 2021
[ 0.000000] Machine model: Raspberry Pi 4 Model B Rev 1.1
[ 0.000000] Reserved memory: created CMA memory pool at 0x000000002ac00000, size 64 MiB
[ 0.000000] OF: reserved mem: initialized node linux,cma, compatible id shared-dma-pool
[ 0.000000] Zone ranges:
[ 0.000000] DMA [mem 0x0000000000000000-0x000000003fffffff]
[ 0.000000] DMA32 [mem 0x0000000040000000-0x000000007fffffff]
[ 0.000000] Normal empty
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000000000000-0x000000003b3fffff]
[ 0.000000] node 0: [mem 0x0000000040000000-0x000000007fffffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x000000007fffffff]
[ 0.000000] On node 0 totalpages: 504832
[ 0.000000] DMA zone: 3792 pages used for memmap
[ 0.000000] DMA zone: 0 pages reserved
[ 0.000000] DMA zone: 242688 pages, LIFO batch:63
[ 0.000000] DMA32 zone: 4096 pages used for memmap
[ 0.000000] DMA32 zone: 262144 pages, LIFO batch:63
[ 0.000000] percpu: Embedded 21 pages/cpu s45272 r8192 d32552 u86016
[ 0.000000] pcpu-alloc: s45272 r8192 d32552 u86016 alloc=21*4096
[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3
[ 0.000000] Detected PIPT I-cache on CPU0
[ 0.000000] CPU features: detected: Spectre-v2
[ 0.000000] CPU features: detected: Spectre-v4
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 496944
[ 0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 bcm2708_fb.fbwidth=0 bcm2708_fb.fbheight=0 bcm2708_fb.fbswap=1 smsc95xx.macaddr=DC:A6:32:02:C1:C1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 console=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=squashfs,ext4 rootwait
[ 0.000000] Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes, linear)
[ 0.000000] Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes, linear)
[ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[ 0.000000] software IO TLB: mapped [mem 0x0000000037400000-0x000000003b400000] (64MB)
[ 0.000000] Memory: 1836040K/2019328K available (7486K kernel code, 870K rwdata, 1904K rodata, 448K init, 532K bss, 117752K reserved, 65536K cma-reserved)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[ 0.000000] rcu: Hierarchical RCU implementation.
[ 0.000000] Tracing variant of Tasks RCU enabled.
[ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[ 0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0
[ 0.000000] GIC: Using split EOI/Deactivate mode
[ 0.000000] random: get_random_bytes called from start_kernel+0x2d0/0x454 with crng_init=0
[ 0.000000] arch_timer: cp15 timer(s) running at 54.00MHz (phys).
[ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0xc743ce346, max_idle_ns: 440795203123 ns
[ 0.000006] sched_clock: 56 bits at 54MHz, resolution 18ns, wraps every 4398046511102ns
[ 0.000185] Console: colour dummy device 80x25
[ 0.000477] printk: console [tty1] enabled
[ 0.000514] Calibrating delay loop (skipped), value calculated using timer frequency.. 108.00 BogoMIPS (lpj=540000)
[ 0.000539] pid_max: default: 32768 minimum: 301
[ 0.000706] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes, linear)
[ 0.000753] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes, linear)
[ 0.001399] cgroup: Disabling memory control group subsystem
[ 0.002355] rcu: Hierarchical SRCU implementation.
[ 0.002527] dyndbg: Ignore empty _ddebug table in a CONFIG_DYNAMIC_DEBUG_CORE build
[ 0.003034] smp: Bringing up secondary CPUs ...
[ 0.003451] Detected PIPT I-cache on CPU1
[ 0.003518] CPU1: Booted secondary processor 0x0000000001 [0x410fd083]
[ 0.004004] Detected PIPT I-cache on CPU2
[ 0.004044] CPU2: Booted secondary processor 0x0000000002 [0x410fd083]
[ 0.004502] Detected PIPT I-cache on CPU3
[ 0.004542] CPU3: Booted secondary processor 0x0000000003 [0x410fd083]
[ 0.004617] smp: Brought up 1 node, 4 CPUs
[ 0.004675] SMP: Total of 4 processors activated.
[ 0.004689] CPU features: detected: 32-bit EL0 Support
[ 0.004704] CPU features: detected: CRC32 instructions
[ 0.004774] CPU features: emulated: Privileged Access Never (PAN) using TTBR0_EL1 switching
[ 0.004792] CPU: All CPU(s) started at EL2
[ 0.004823] alternatives: patching kernel code
[ 0.012963] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.013010] futex hash table entries: 1024 (order: 4, 65536 bytes, linear)
[ 0.014825] pinctrl core: initialized pinctrl subsystem
[ 0.015666] NET: Registered protocol family 16
[ 0.017241] DMA: preallocated 1024 KiB GFP_KERNEL pool for atomic allocations
[ 0.017502] DMA: preallocated 1024 KiB GFP_KERNEL|GFP_DMA pool for atomic allocations
[ 0.017986] DMA: preallocated 1024 KiB GFP_KERNEL|GFP_DMA32 pool for atomic allocations
[ 0.018347] thermal_sys: Registered thermal governor 'step_wise'
[ 0.018665] cpuidle: using governor ladder
[ 0.018705] cpuidle: using governor menu
[ 0.018920] ASID allocator initialised with 65536 entries
[ 0.018998] Serial: AMBA PL011 UART driver
[ 0.031060] bcm2835-mbox fe00b880.mailbox: mailbox enabled
[ 0.049986] raspberrypi-firmware soc:firmware: Attached to firmware from 2021-08-19T12:27:01, variant start
[ 0.059997] raspberrypi-firmware soc:firmware: Firmware hash is ef2c018dccdeb94b0376db62a2ea4c882f9b500d
[ 0.087890] bcm2835-dma fe007000.dma: DMA legacy API manager, dmachans=0x1
[ 0.089832] SCSI subsystem initialized
[ 0.089984] usbcore: registered new interface driver usbfs
[ 0.090071] usbcore: registered new interface driver hub
[ 0.090113] usbcore: registered new device driver usb
[ 0.090240] usb_phy_generic phy: supply vcc not found, using dummy regulator
[ 0.091332] clocksource: Switched to clocksource arch_sys_counter
[ 0.094628] NET: Registered protocol family 2
[ 0.094971] IP idents hash table entries: 32768 (order: 6, 262144 bytes, linear)
[ 0.096513] tcp_listen_portaddr_hash hash table entries: 1024 (order: 2, 16384 bytes, linear)
[ 0.096554] TCP established hash table entries: 16384 (order: 5, 131072 bytes, linear)
[ 0.096683] TCP bind hash table entries: 16384 (order: 6, 262144 bytes, linear)
[ 0.096934] TCP: Hash tables configured (established 16384 bind 16384)
[ 0.097129] UDP hash table entries: 1024 (order: 3, 32768 bytes, linear)
[ 0.097175] UDP-Lite hash table entries: 1024 (order: 3, 32768 bytes, linear)
[ 0.097358] NET: Registered protocol family 1
[ 0.097395] PCI: CLS 0 bytes, default 64
[ 0.098665] workingset: timestamp_bits=46 max_order=19 bucket_order=0
[ 0.102518] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.169456] brcm-pcie fd500000.pcie: host bridge /scb/pcie@7d500000 ranges:
[ 0.169495] brcm-pcie fd500000.pcie: No bus range found for /scb/pcie@7d500000, using [bus 00-ff]
[ 0.169535] brcm-pcie fd500000.pcie: MEM 0x0600000000..0x063fffffff -> 0x00c0000000
[ 0.169575] brcm-pcie fd500000.pcie: IB MEM 0x0000000000..0x007fffffff -> 0x0400000000
[ 0.223404] brcm-pcie fd500000.pcie: link up, 5.0 GT/s PCIe x1 (SSC)
[ 0.223577] brcm-pcie fd500000.pcie: PCI host bridge to bus 0000:00
[ 0.223598] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 0.223616] pci_bus 0000:00: root bus resource [mem 0x600000000-0x63fffffff] (bus address [0xc0000000-0xffffffff])
[ 0.223670] pci 0000:00:00.0: [14e4:2711] type 01 class 0x060400
[ 0.223750] pci 0000:00:00.0: PME# supported from D0 D3hot
[ 0.227316] pci 0000:01:00.0: [1106:3483] type 00 class 0x0c0330
[ 0.227393] pci 0000:01:00.0: reg 0x10: [mem 0x00000000-0x00000fff 64bit]
[ 0.227568] pci 0000:01:00.0: PME# supported from D0 D3cold
[ 0.230907] pci 0000:00:00.0: BAR 8: assigned [mem 0x600000000-0x6000fffff]
[ 0.230931] pci 0000:01:00.0: BAR 0: assigned [mem 0x600000000-0x600000fff 64bit]
[ 0.230991] pci 0000:00:00.0: PCI bridge to [bus 01]
[ 0.231007] pci 0000:00:00.0: bridge window [mem 0x600000000-0x6000fffff]
[ 0.231186] pcieport 0000:00:00.0: enabling device (0000 -> 0002)
[ 0.231308] pcieport 0000:00:00.0: PME: Signaling with IRQ 46
[ 0.231569] pcieport 0000:00:00.0: AER: enabled with IRQ 46
[ 0.231983] bcm2708_fb soc:fb: Unable to determine number of FBs. Disabling driver.
[ 0.232013] bcm2708_fb: probe of soc:fb failed with error -2
[ 0.234151] Serial: 8250/16550 driver, 1 ports, IRQ sharing enabled
[ 0.234982] iproc-rng200 fe104000.rng: hwrng registered
[ 0.235103] vc-mem: phys_addr:0x00000000 mem_base=0x3ec00000 mem_size:0x40000000(1024 MiB)
[ 0.235112] random: fast init done
[ 0.235389] random: crng init done
[ 0.235507] gpiomem-bcm2835 fe200000.gpiomem: Initialised: Registers at 0xfe200000
[ 0.235736] cacheinfo: Unable to detect cache hierarchy for CPU 0
[ 0.242220] brd: module loaded
[ 0.245497] loop: module loaded
[ 0.247168] libphy: Fixed MDIO Bus: probed
[ 0.247579] bcmgenet fd580000.ethernet: GENET 5.0 EPHY: 0x0000
[ 0.261338] libphy: bcmgenet MII bus: probed
[ 0.351380] unimac-mdio unimac-mdio.-19: Broadcom UniMAC MDIO bus
[ 0.353425] xhci_hcd 0000:01:00.0: enabling device (0000 -> 0002)
[ 0.353547] xhci_hcd 0000:01:00.0: xHCI Host Controller
[ 0.353578] xhci_hcd 0000:01:00.0: new USB bus registered, assigned bus number 1
[ 0.354282] xhci_hcd 0000:01:00.0: hcc params 0x002841eb hci version 0x100 quirks 0x00000c0000000890
[ 0.354936] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.10
[ 0.354958] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 0.354976] usb usb1: Product: xHCI Host Controller
[ 0.354990] usb usb1: Manufacturer: Linux 5.10.84 xhci-hcd
[ 0.355004] usb usb1: SerialNumber: 0000:01:00.0
[ 0.355339] hub 1-0:1.0: USB hub found
[ 0.355411] hub 1-0:1.0: 1 port detected
[ 0.355858] xhci_hcd 0000:01:00.0: xHCI Host Controller
[ 0.355881] xhci_hcd 0000:01:00.0: new USB bus registered, assigned bus number 2
[ 0.355905] xhci_hcd 0000:01:00.0: Host supports USB 3.0 SuperSpeed
[ 0.356153] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.10
[ 0.356173] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 0.356189] usb usb2: Product: xHCI Host Controller
[ 0.356202] usb usb2: Manufacturer: Linux 5.10.84 xhci-hcd
[ 0.356215] usb usb2: SerialNumber: 0000:01:00.0
[ 0.356519] hub 2-0:1.0: USB hub found
[ 0.356564] hub 2-0:1.0: 4 ports detected
[ 0.357369] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)
[ 0.357459] dwc_otg: FIQ enabled
[ 0.357465] dwc_otg: NAK holdoff enabled
[ 0.357469] dwc_otg: FIQ split-transaction FSM enabled
[ 0.357476] Module dwc_common_port init
[ 0.357746] usbcore: registered new interface driver uas
[ 0.357815] usbcore: registered new interface driver usb-storage
[ 0.357886] mousedev: PS/2 mouse device common for all mice
[ 0.358354] bcm2835-wdt bcm2835-wdt: Broadcom BCM2835 watchdog timer
[ 0.360054] sdhci: Secure Digital Host Controller Interface driver
[ 0.360072] sdhci: Copyright(c) Pierre Ossman
[ 0.360235] Error: Driver 'sdhost-bcm2835' is already registered, aborting...
[ 0.360248] sdhci-pltfm: SDHCI platform and OF driver helper
[ 0.367643] NET: Registered protocol family 10
[ 0.368052] Segment Routing with IPv6
[ 0.368084] NET: Registered protocol family 17
[ 0.368106] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 0.368112] 8021q: 802.1Q VLAN Support v1.8
[ 0.368313] Key type ._fscrypt registered
[ 0.368318] Key type .fscrypt registered
[ 0.368321] Key type fscrypt-provisioning registered
[ 0.370536] uart-pl011 fe201000.serial: there is not valid maps for state default
[ 0.370601] uart-pl011 fe201000.serial: cts_event_workaround enabled
[ 0.370653] fe201000.serial: ttyAMA0 at MMIO 0xfe201000 (irq = 21, base_baud = 0) is a PL011 rev2
[ 1.425496] printk: console [ttyAMA0] enabled
[ 1.433414] bcm2835-power bcm2835-power: Broadcom BCM2835 power domains driver
[ 1.441483] of_cfs_init
[ 1.443966] of_cfs_init: OK
[ 1.483372] mmc0: SDHCI controller on fe340000.mmc [fe340000.mmc] using ADMA
[ 1.490678] Waiting for root device /dev/mmcblk0p2...
[ 1.571407] usb 1-1: new high-speed USB device number 2 using xhci_hcd
[ 1.595549] mmc0: new ultra high speed DDR50 SDHC card at address aaaa
[ 1.602465] mmcblk0: mmc0:aaaa SE16G 14.8 GiB
[ 1.607406] mmcblk0: p1 p2 p3
[ 1.616160] EXT4-fs (mmcblk0p2): mounted filesystem without journal. Opts: (null)
[ 1.623681] VFS: Mounted root (ext4 filesystem) readonly on device 179:2.
[ 1.630698] Freeing unused kernel memory: 448K
[ 1.701475] Run /sbin/init as init process
[ 1.705574] with arguments:
[ 1.705579] /sbin/init
[ 1.705583] with environment:
[ 1.705588] HOME=/
[ 1.705592] TERM=linux
[ 1.740756] init: Console is alive
[ 1.744418] init: - watchdog -
[ 1.763995] usb 1-1: New USB device found, idVendor=2109, idProduct=3431, bcdDevice= 4.21
[ 1.772205] usb 1-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0
[ 1.779340] usb 1-1: Product: USB2.0 Hub
[ 1.784467] hub 1-1:1.0: USB hub found
[ 1.788505] hub 1-1:1.0: 4 ports detected
[ 1.892241] kmodloader: loading kernel modules from /etc/modules-boot.d/*
[ 1.903009] kmodloader: done loading kernel modules from /etc/modules-boot.d/*
[ 1.919323] init: - preinit -
[ 1.921505] usb 2-2: new SuperSpeed Gen 1 USB device number 2 using xhci_hcd
[ 1.962514] usb 2-2: New USB device found, idVendor=2357, idProduct=0601, bcdDevice=30.00
[ 1.970712] usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=6
[ 1.977856] usb 2-2: Product: USB 10/100/1000 LAN
[ 1.982560] usb 2-2: Manufacturer: TP-Link
[ 1.986650] usb 2-2: SerialNumber: 000001000000
[ 2.018084] bcmgenet fd580000.ethernet: configuring instance for external RGMII (RX delay)
[ 2.026563] bcmgenet fd580000.ethernet eth0: Link is Down
[ 5.191515] bcmgenet fd580000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx
[ 5.199877] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 6.081827] mount_root: mounting /dev/root
[ 6.088013] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 6.093545] mount_root: loading kmods from internal overlay
[ 6.105416] kmodloader: loading kernel modules from //etc/modules-boot.d/*
[ 6.112672] kmodloader: done loading kernel modules from //etc/modules-boot.d/*
[ 6.174244] block: attempting to load /etc/config/fstab
[ 6.180101] block: unable to load configuration (fstab: Entry not found)
[ 6.186853] block: no usable configuration
[ 6.341833] urandom-seed: Seed file not found (/etc/urandom.seed)
[ 6.373346] bcmgenet fd580000.ethernet eth0: Link is Down
[ 6.381908] procd: - early -
[ 6.384869] procd: - watchdog -
[ 6.601848] EXT4-fs (mmcblk0p3): mounted filesystem with ordered data mode. Opts:
[ 6.909000] procd: - watchdog -
[ 6.912335] procd: - ubus -
[ 6.967277] procd: - init -
[ 6.970909] uart-pl011 fe201000.serial: no DMA platform data
[ 7.052239] kmodloader: loading kernel modules from /etc/modules.d/*
[ 7.075024] hid: raw HID events driver (C) Jiri Kosina
[ 7.081003] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned.
[ 7.092497] GACT probability on
[ 7.095957] Mirror/redirect action on
[ 7.101472] u32 classifier
[ 7.104180] input device check on
[ 7.107831] Actions configured
[ 7.123929] Bridge firewalling registered
[ 7.128525] Loading modules backported from Linux version v5.15-rc6-0-g519d81956ee2
[ 7.136201] Backport generated by backports.git v5.15-rc6-1-0-gd44432d6
[ 7.148112] usbcore: registered new interface driver r8152
[ 7.154206] usbcore: registered new interface driver rtl8150
[ 7.161251] usbcore: registered new interface driver usbhid
[ 7.166841] usbhid: USB HID core driver
[ 7.175823] xt_time: kernel timezone is -0000
[ 7.180533] usbcore: registered new interface driver ax88179_178a
[ 7.200093] PPP generic driver version 2.4.2
[ 7.204796] NET: Registered protocol family 24
[ 7.210229] wireguard: WireGuard 1.0.0 loaded. See www.wireguard.com for information.
[ 7.218087] wireguard: Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
[ 7.234999] usbcore: registered new interface driver brcmfmac
[ 7.242647] kmodloader: done loading kernel modules from /etc/modules.d/*
[ 7.321915] usb 2-2: reset SuperSpeed Gen 1 USB device number 2 using xhci_hcd
[ 7.368461] r8152 2-2:1.0: Direct firmware load for rtl_nic/rtl8153a-3.fw failed with error -2
[ 7.377139] r8152 2-2:1.0: Falling back to sysfs fallback for: rtl_nic/rtl8153a-3.fw
[ 7.390060] r8152 2-2:1.0: unable to load firmware patch rtl_nic/rtl8153a-3.fw (-12)
[ 7.442714] r8152 2-2:1.0 eth1: v1.12.11
[ 8.612193] bcmgenet fd580000.ethernet: configuring instance for external RGMII (RX delay)
[ 8.620617] bcmgenet fd580000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx
[ 10.615118] lxcbr0: port 1(vethqkJRdL) entered blocking state
[ 10.621300] lxcbr0: port 1(vethqkJRdL) entered disabled state
[ 10.627404] device vethqkJRdL entered promiscuous mode
[ 10.633441] lxcbr0: port 1(vethqkJRdL) entered blocking state
[ 10.639196] lxcbr0: port 1(vethqkJRdL) entered forwarding state
[ 10.645288] lxcbr0: port 1(vethqkJRdL) entered disabled state
[ 10.651761] eth0: renamed from vethcjsOnY
[ 10.771927] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 10.778266] IPv6: ADDRCONF(NETDEV_CHANGE): vethqkJRdL: link becomes ready
[ 10.785167] lxcbr0: port 1(vethqkJRdL) entered blocking state
[ 10.790908] lxcbr0: port 1(vethqkJRdL) entered forwarding state
[ 11.618633] r8152 2-2:1.0 eth1: carrier on
[46397.949622] ------------[ cut here ]------------
[46397.954276] NETDEV WATCHDOG: eth0 (bcmgenet): transmit queue 0 timed out
[46397.961049] WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:467 dev_watchdog+0x2c8/0x2d0
[46397.969317] Modules linked in: xt_connlimit pppoe ppp_async nf_conncount iptable_nat brcmfmac xt_state xt_nat xt_helper xt_conntrack xt_connmark xt_connbytes xt_REDIRECT xt_MASQUERADE xt_FLOWOFFLOAD xt_CT wireguard pppox ppp_generic nf_nat nf_flow_table nf_conntrack libchacha20poly1305 libblake2s ipt_REJECT chacha_neon cfg80211 ax88179_178a xt_time xt_tcpudp xt_tcpmss xt_statistic xt_recent xt_quota xt_pkttype xt_physdev xt_owner xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_ecn xt_dscp xt_comment xt_cgroup xt_addrtype xt_TCPMSS xt_LOG xt_HL xt_DSCP xt_CLASSIFY usbnet usbhid slhc sch_cake rtl8150 r8152 poly1305_neon nf_reject_ipv4 nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 macvlan libcurve25519_generic libchacha libblake2s_generic iptable_raw iptable_mangle iptable_filter ipt_ECN ip_tables hid_generic crc_ccitt compat brcmutil br_netfilter sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_tcindex cls_route cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred
[46397.969686] act_gact snd_bcm2835(C) hid evdev nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 ifb ip6_udp_tunnel udp_tunnel veth snd_rawmidi snd_seq_device snd_pcm_oss snd_mixer_oss snd_hwdep snd_compress snd_pcm snd_timer snd soundcore nls_utf8 vfat fat nls_iso8859_1 nls_cp437
[46398.086432] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G C 5.10.84 #0
[46398.093829] Hardware name: Raspberry Pi 4 Model B Rev 1.1 (DT)
[46398.099666] pstate: 60400005 (nZCv daif +PAN -UAO -TCO BTYPE=--)
[46398.105675] pc : dev_watchdog+0x2c8/0x2d0
[46398.109686] lr : dev_watchdog+0x2c8/0x2d0
[46398.113692] sp : ffffffc010b33d70
[46398.117003] x29: ffffffc010b33d70 x28: 0000000000000140
[46398.122320] x27: 00000000ffffffff x26: 0000000000000000
[46398.127636] x25: 0000000000000001 x24: 0000000000000000
[46398.132951] x23: ffffff8040c40480 x22: 0000000000000001
[46398.138265] x21: ffffffc0109b6000 x20: ffffff8040c40000
[46398.143580] x19: 0000000000000000 x18: 0000000000000118
[46398.148894] x17: 0000000000000000 x16: 0000000000000000
[46398.154208] x15: ffffffc0109c7790 x14: 0000000000000348
[46398.159522] x13: 0000000000000118 x12: ffffffc010b33a48
[46398.164836] x11: ffffffc010a1f790 x10: 00000000fffff000
[46398.170151] x9 : ffffffc010a1f790 x8 : 0000000000000000
[46398.175466] x7 : ffffffc0109c7790 x6 : 0000000000000002
[46398.180779] x5 : 0000000000000000 x4 : 0000000000000000
[46398.186094] x3 : ffffffc0109b8f8c x2 : 0000000000000004
[46398.191408] x1 : 0000000000000005 x0 : 000000000000003c
[46398.196723] Call trace:
[46398.199169] dev_watchdog+0x2c8/0x2d0
[46398.202834] call_timer_fn.constprop.0+0x24/0x80
[46398.207451] __run_timers.part.0+0x240/0x280
[46398.211720] run_timer_softirq+0x3c/0x74
[46398.215641] _stext+0x124/0x290
[46398.218783] irq_exit+0xa0/0xf0
[46398.221926] __handle_domain_irq+0x80/0xe0
[46398.226025] gic_handle_irq+0x78/0xa0
[46398.229686] el1_irq+0xcc/0x180
[46398.232826] arch_cpu_idle+0x18/0x30
[46398.236401] default_idle_call+0x20/0x70
[46398.240324] do_idle+0x21c/0x280
[46398.243550] cpu_startup_entry+0x28/0x60
[46398.247472] secondary_start_kernel+0x128/0x150
[46398.252000] ---[ end trace 14199b63182cfbd7 ]---
I did find some open issues but no solutions. Keyword searching "PID: 0 at net/sched/sch_generic.c:467 dev_watchdog"
Links: