And the most recent crash: Oct 22 11:44:51 dns1 kernel: [ 3096.793118] ------------[ cut here ]------------ Oct 22 11:44:51 dns1 kernel: [ 3096.793183] NETDEV WATCHDOG: eth0 (lan78xx): transmit queue 0 timed out Oct 22 11:44:51 dns1 kernel: [ 3096.793282] WARNING: CPU: 2 PID: 0 at net/sched/sch_generic.c:447 dev_watchdog+0x370/0x378 Oct 22 11:44:51 dns1 kernel: [ 3096.793288] Modules linked in: sctp wireguard ip6_udp_tunnel udp_tunnel 8021q garp mrp stp llc dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua btsdio bluetooth ecdh_generic ecc brcmfmac brcmutil cfg80211 bcm2835_v4l2(CE) bcm2835_isp(CE) bcm2835_codec(CE) v4l2_mem2mem bcm2835_mmal_vchiq(CE) videobuf2_vmalloc videobuf2_dma_contig videobuf2_memops snd_bcm2835(CE) videobuf2_v4l2 videobuf2_common snd_pcm raspberrypi_hwmon videodev snd_timer snd mc vc_sm_cma(CE) rpi_poe_fan uio_pdrv_genirq uio sch_fq_codel drm ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor xor_neon raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_ce spidev phy_generic aes_neon_bs aes_neon_blk crypto_simd cryptd Oct 22 11:44:51 dns1 kernel: [ 3096.793477] CPU: 2 PID: 0 Comm: swapper/2 Tainted: G C E 5.4.0-1022-raspi #25-Ubuntu Oct 22 11:44:51 dns1 kernel: [ 3096.793482] Hardware name: Raspberry Pi 3 Model B Plus Rev 1.3 (DT) Oct 22 11:44:51 dns1 kernel: [ 3096.793491] pstate: 60400005 (nZCv daif +PAN -UAO) Oct 22 11:44:51 dns1 kernel: [ 3096.793499] pc : dev_watchdog+0x370/0x378 Oct 22 11:44:51 dns1 kernel: [ 3096.793507] lr : dev_watchdog+0x370/0x378 Oct 22 11:44:51 dns1 kernel: [ 3096.793512] sp : ffff800010013d80 Oct 22 11:44:51 dns1 kernel: [ 3096.793517] x29: ffff800010013d80 x28: ffff0000363c2380 Oct 22 11:44:51 dns1 kernel: [ 3096.793527] x27: 00000000ffffffff x26: ffff00002bf81280 Oct 22 11:44:51 dns1 kernel: [ 3096.793536] x25: ffffa28a3750a018 x24: ffff00002bf81340 Oct 22 11:44:51 dns1 kernel: [ 3096.793546] x23: ffff00003535245c x22: ffff000035352000 Oct 22 11:44:51 dns1 kernel: [ 3096.793555] x21: ffff000035352480 x20: ffffa28a37807000 Oct 22 11:44:51 dns1 kernel: [ 3096.793564] x19: 0000000000000000 x18: 0000000000000000 Oct 22 11:44:51 dns1 kernel: [ 3096.793573] x17: 0000000000000000 x16: 0000000000000000 Oct 22 11:44:51 dns1 kernel: [ 3096.793582] x15: ffff000035a340b0 x14: ffffffffffffffff Oct 22 11:44:51 dns1 kernel: [ 3096.793591] x13: 0000000000000000 x12: ffffa28a3793f000 Oct 22 11:44:51 dns1 kernel: [ 3096.793600] x11: ffffa28a3782c000 x10: ffffa28a3793fa80 Oct 22 11:44:51 dns1 kernel: [ 3096.793609] x9 : 0000000000000000 x8 : 0000000000000004 Oct 22 11:44:51 dns1 kernel: [ 3096.793617] x7 : 0000000000000000 x6 : 0000000000000000 Oct 22 11:44:51 dns1 kernel: [ 3096.793626] x5 : 0000000000000000 x4 : 0000000000000004 Oct 22 11:44:51 dns1 kernel: [ 3096.793634] x3 : ffffa28a36e15798 x2 : 0000000000000040 Oct 22 11:44:51 dns1 kernel: [ 3096.793643] x1 : 0000000000000000 x0 : 0000000000000000 Oct 22 11:44:51 dns1 kernel: [ 3096.793652] Call trace: Oct 22 11:44:51 dns1 kernel: [ 3096.793661] dev_watchdog+0x370/0x378 Oct 22 11:44:51 dns1 kernel: [ 3096.793674] call_timer_fn+0x40/0x1e8 Oct 22 11:44:51 dns1 kernel: [ 3096.793684] run_timer_softirq+0x1d4/0x590 Oct 22 11:44:51 dns1 kernel: [ 3096.793694] __do_softirq+0x170/0x424 Oct 22 11:44:51 dns1 kernel: [ 3096.793704] irq_exit+0xb4/0xe8 Oct 22 11:44:51 dns1 kernel: [ 3096.793716] __handle_domain_irq+0x74/0xc8 Oct 22 11:44:51 dns1 kernel: [ 3096.793724] bcm2836_arm_irqchip_handle_irq+0x78/0xf0 Oct 22 11:44:51 dns1 kernel: [ 3096.793731] el1_irq+0x108/0x200 Oct 22 11:44:51 dns1 kernel: [ 3096.793742] arch_cpu_idle+0x40/0x238 Oct 22 11:44:51 dns1 kernel: [ 3096.793754] default_idle_call+0x28/0x6c Oct 22 11:44:51 dns1 kernel: [ 3096.793765] do_idle+0x214/0x2a0 Oct 22 11:44:51 dns1 kernel: [ 3096.793775] cpu_startup_entry+0x30/0x78 Oct 22 11:44:51 dns1 kernel: [ 3096.793789] secondary_start_kernel+0x18c/0x1c8 Oct 22 11:44:51 dns1 kernel: [ 3096.793796] ---[ end trace 2e28df1507856d1f ]---
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-raspi2 in Ubuntu. https://bugs.launchpad.net/bugs/1861936 Title: Raspberry Pi 3 network dies shortly after a burst of IPv6 tunnel network load ((lan78xx): transmit queue 0 timed out) Status in linux-raspi2 package in Ubuntu: Incomplete Status in linux-raspi2 source package in Eoan: Won't Fix Status in linux-raspi2 source package in Focal: Confirmed Bug description: Desciption changed: Raspberry Pi 3 network partially dies (transmission doesn't work, reception still does) shortly after a burst of network load over IPv6, when IPv6 connectivity is provided by a tunnel from tunnelbroker.net. The triggering load is typically an HTTP(S) download, and replication can be done without actually saving the file (wget -O /dev/null ...). Problem happens within downloading ~10 GB, usually withinthe first 1 GB of traffic) Replication is 100% as long as _all_ of the following conditions are met - 6in4 tunnel to HE.net set up with netplan - ipv6 rules applied (netfilter-persistent) - ipv6 forwarding enabled (edit /etc/sysctl.conf) kern.log message that appears after a while: Feb 4 23:42:59 rpi3 kernel: [ 571.878359] ------------[ cut here ]------------ Feb 4 23:42:59 rpi3 kernel: [ 571.878420] NETDEV WATCHDOG: eth0 (lan78xx): transmit queue 0 timed out Feb 4 23:42:59 rpi3 kernel: [ 571.878550] WARNING: CPU: 3 PID: 0 at net/sched/sch_generic.c:447 dev_watchdog+0x324/0x330 Feb 4 23:42:59 rpi3 kernel: [ 571.878557] Modules linked in: sit tunnel4 ip_tunnel bridge stp llc ip6table_filter ip6_tables xt_tcpudp xt_conntrack nf_conntrack iptable_filter bpfilter nls_ascii dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua btsdio bluetooth ecdh_generic ecc brcmfmac brcmutil cfg80211 bcm2835_v4l2(CE) bcm2835_mmal_vchiq(CE) input_leds vc_sm_cma(CE) v4l2_common videobuf2_vmalloc spidev videobuf2_memops videobuf2_v4l2 raspberrypi_hwmon videobuf2_common videodev mc uio_pdrv_genirq uio sch_fq_codel jool(OE) jool_common(OE) nf_defrag_ipv6 nf_defrag_ipv4 ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor xor_neon raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid crct10dif_ce sdhci_iproc phy_generic fixed aes_neon_bs aes_neon_blk crypto_simd cryptd aes_arm64 Feb 4 23:42:59 rpi3 kernel: [ 571.878774] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G C OE 5.3.0-1017-raspi2 #19-Ubuntu Feb 4 23:42:59 rpi3 kernel: [ 571.878781] Hardware name: Raspberry Pi 3 Model B Plus Rev 1.3 (DT) Feb 4 23:42:59 rpi3 kernel: [ 571.878789] pstate: 60400005 (nZCv daif +PAN -UAO) Feb 4 23:42:59 rpi3 kernel: [ 571.878800] pc : dev_watchdog+0x324/0x330 Feb 4 23:42:59 rpi3 kernel: [ 571.878807] lr : dev_watchdog+0x324/0x330 Feb 4 23:42:59 rpi3 kernel: [ 571.878812] sp : ffff00001001bd60 Feb 4 23:42:59 rpi3 kernel: [ 571.878817] x29: ffff00001001bd60 x28: 0000000000000140 Feb 4 23:42:59 rpi3 kernel: [ 571.878827] x27: 00000000ffffffff x26: 0000000000000000 Feb 4 23:42:59 rpi3 kernel: [ 571.878836] x25: ffff8ecbefa4e000 x24: ffff305e0f529018 Feb 4 23:42:59 rpi3 kernel: [ 571.878845] x23: 0000000000000000 x22: 0000000000000001 Feb 4 23:42:59 rpi3 kernel: [ 571.878853] x21: ffff8ecbefa4e480 x20: ffff305e0f807000 Feb 4 23:42:59 rpi3 kernel: [ 571.878862] x19: 0000000000000000 x18: 0000000000000000 Feb 4 23:42:59 rpi3 kernel: [ 571.878871] x17: ffff000010fd8218 x16: ffff305e0e30efb8 Feb 4 23:42:59 rpi3 kernel: [ 571.878879] x15: ffff8ecbf922a290 x14: ffffffffffffffff Feb 4 23:42:59 rpi3 kernel: [ 571.878888] x13: 0000000000000000 x12: ffff305e0f944000 Feb 4 23:42:59 rpi3 kernel: [ 571.878897] x11: ffff305e0f82d000 x10: 0000000000000000 Feb 4 23:42:59 rpi3 kernel: [ 571.878905] x9 : 0000000000000004 x8 : 000000000000017f Feb 4 23:42:59 rpi3 kernel: [ 571.878913] x7 : 0000000000000000 x6 : 0000000000000001 Feb 4 23:42:59 rpi3 kernel: [ 571.878921] x5 : 0000000000000000 x4 : 0000000000000008 Feb 4 23:42:59 rpi3 kernel: [ 571.878929] x3 : ffff305e0ee15750 x2 : 0000000000000004 Feb 4 23:42:59 rpi3 kernel: [ 571.878937] x1 : 6abb42c67c954600 x0 : 0000000000000000 Feb 4 23:42:59 rpi3 kernel: [ 571.878946] Call trace: Feb 4 23:42:59 rpi3 kernel: [ 571.878955] dev_watchdog+0x324/0x330 Feb 4 23:42:59 rpi3 kernel: [ 571.878967] call_timer_fn+0x3c/0x178 Feb 4 23:42:59 rpi3 kernel: [ 571.878977] __run_timers.part.0+0x200/0x330 Feb 4 23:42:59 rpi3 kernel: [ 571.878985] run_timer_softirq+0x40/0x78 Feb 4 23:42:59 rpi3 kernel: [ 571.878995] __do_softirq+0x168/0x384 Feb 4 23:42:59 rpi3 kernel: [ 571.879007] irq_exit+0xb0/0xe8 Feb 4 23:42:59 rpi3 kernel: [ 571.879020] __handle_domain_irq+0x70/0xc0 Feb 4 23:42:59 rpi3 kernel: [ 571.879028] bcm2836_arm_irqchip_handle_irq+0x74/0xe0 Feb 4 23:42:59 rpi3 kernel: [ 571.879037] el1_irq+0x108/0x200 Feb 4 23:42:59 rpi3 kernel: [ 571.879050] arch_cpu_idle+0x3c/0x1c8 Feb 4 23:42:59 rpi3 kernel: [ 571.879069] default_idle_call+0x24/0x48 Feb 4 23:42:59 rpi3 kernel: [ 571.879081] do_idle+0x210/0x2a0 Feb 4 23:42:59 rpi3 kernel: [ 571.879091] cpu_startup_entry+0x28/0x30 Feb 4 23:42:59 rpi3 kernel: [ 571.879102] secondary_start_kernel+0x154/0x1c8 Feb 4 23:42:59 rpi3 kernel: [ 571.879108] ---[ end trace 349744d60a20e77a ]--- ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: linux-image-5.3.0-1017-raspi2 5.3.0-1017.19 ProcVersionSignature: Ubuntu 5.3.0-1017.19-raspi2 5.3.13 Uname: Linux 5.3.0-1017-raspi2 aarch64 ApportVersion: 2.20.11-0ubuntu8.2 Architecture: arm64 Date: Tue Feb 4 23:49:19 2020 ProcEnviron: TERM=linux PATH=(custom, no user) LANG=C.UTF-8 SHELL=/bin/bash SourcePackage: linux-raspi2 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi2/+bug/1861936/+subscriptions -- 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