Comment 0 for bug 1861936

Raspberry Pi 3 network dies shortly after a burst of SD card IO (writes) and network load. Happened a few times when I tried to download a gparted zip release (~350 MiB) directly to the SD card, and then finally when I tried to scp the finished download from a desktop onto RPi's card.
Didn't collect information when it happened, but kept a copy of kernel.log. Here's the relevant part:

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)