http://bugzilla.opensuse.org/show_bug.cgi?id=1128546
http://bugzilla.opensuse.org/show_bug.cgi?id=1128546#c2
--- Comment #2 from Guillaume GARDET ---
Not sure if it is related or not, but on boot, there is the following trace:
[ 120.602189] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 120.620158] 8021q: adding VLAN 0 to HW filter on device eth0
[ 123.479779] ------------[ cut here ]------------
[ 123.496861] irq 79 handler irq_default_primary_handler+0x0/0x20 enabled
interrupts
[ 123.517269] WARNING: CPU: 0 PID: 0 at kernel/irq/handle.c:153
__handle_irq_event_percpu+0x220/0x228
[ 123.539140] Modules linked in: af_packet nls_iso8859_1 nls_cp437 vfat fat
btsdio bluetooth ecdh_generic brcmfmac brcmutil cfg80211 gpio_raspberrypi_exp
rfkill raspberrypi_hwmon bcm2835_thermal vchiq(C) bcm2835_rng bcm2835_wdt
uio_pdrv_genirq uio leds_gpio sg btrfs libcrc32c zlib_deflate xor raid6_pq
8021q garp mrp stp llc microchip lan78xx uas usb_storage scsi_transport_iscsi
mmc_block vc4 snd_soc_core ac97_bus snd_pcm_dmaengine snd_pcm snd_timer snd
soundcore drm_kms_helper dwc2 syscopyarea sysfillrect udc_core sysimgblt
fb_sys_fops sdhci_iproc drm sdhci_pltfm crct10dif_ce sdhci usbcore i2c_bcm2835
bcm2835 mmc_core bcm2835_dma fixed phy_generic overlay dm_mirror dm_region_hash
dm_log dm_mod efivarfs aes_neon_bs aes_neon_blk crypto_simd cryptd aes_arm64
[ 123.663474] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G C
4.20.13-1-default #1 openSUSE Tumbleweed (unreleased)
[ 123.689431] Hardware name: raspberrypi rpi/rpi, BIOS 2019.01 02/14/2019
[ 123.710769] pstate: 40000005 (nZcv daif -PAN -UAO)
[ 123.730469] pc : __handle_irq_event_percpu+0x220/0x228
[ 123.750389] lr : __handle_irq_event_percpu+0x220/0x228
[ 123.770236] sp : ffff000008003d00
[ 123.788358] x29: ffff000008003d00 x28: 0000000000000002
[ 123.808470] x27: ffff27aafeda7000 x26: ffffcf2aa3ec4600
[ 123.828558] x25: ffff27aafe85b018 x24: ffff27aafec1a388
[ 123.848772] x23: ffff000008003d8c x22: 0000000000000000
[ 123.868798] x21: 000000000000004f x20: ffffcf2aa3ec4678
[ 123.888643] x19: ffffcf2aab9cee00 x18: 0000000000000010
[ 123.908451] x17: 0000000000000000 x16: 0000000000000000
[ 123.928239] x15: 0000000000aaaaaa x14: 0e200e200e200e20
[ 123.948006] x13: 0000000000000001 x12: 00000000ffffffff
[ 123.967738] x11: ffff27aaa09b30a0 x10: 0000000000000001
[ 123.987455] x9 : 0000000000000001 x8 : ffff27aafdf00390
[ 124.007213] x7 : 0000000000000000 x6 : ffffcf2abdf67208
[ 124.026874] x5 : ffffcf2abdf67208 x4 : 0000000000000000
[ 124.046631] x3 : ffffcf2abdf6f500 x2 : ffffcf2abdf67208
[ 124.066401] x1 : 0000a77fbf70a000 x0 : 0000000000000046
[ 124.086213] Call trace:
[ 124.102949] __handle_irq_event_percpu+0x220/0x228
[ 124.122237] handle_irq_event_percpu+0x28/0x70
[ 124.141148] handle_irq_event+0x50/0xa8
[ 124.159493] handle_simple_irq+0xa0/0xe8
[ 124.177630] generic_handle_irq+0x34/0x50
[ 124.196022] intr_complete+0x8c/0x178 [lan78xx]
[ 124.215034] __usb_hcd_giveback_urb+0x74/0x128 [usbcore]
[ 124.234823] usb_giveback_urb_bh+0xc4/0x150 [usbcore]
[ 124.254001] tasklet_action_common.isra.2+0x7c/0x100
[ 124.272881] tasklet_hi_action+0x28/0x30
[ 124.290333] __do_softirq+0x160/0x380
[ 124.307546] irq_exit+0xb4/0xd0
[ 124.324071] __handle_domain_irq+0x70/0xc0
[ 124.341366] bcm2836_arm_irqchip_handle_irq+0x74/0xd8
[ 124.359519] el1_irq+0xb4/0x140
[ 124.375606] arch_cpu_idle+0x38/0x1c0
[ 124.392088] default_idle_call+0x34/0x3c
[ 124.408697] do_idle+0x1e4/0x258
[ 124.424449] cpu_startup_entry+0x2c/0x30
[ 124.440847] rest_init+0xc4/0xd0
[ 124.456490] arch_call_rest_init+0x14/0x1c
[ 124.472776] start_kernel+0x444/0x458
[ 124.488455] ---[ end trace d256d46404c989bb ]---
[ 124.513617] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
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