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Linux 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:33:37 UTC 2016 x86_64 
x86_64 x86_64 GNU/Linux
Linux Mint 18 Sarah Cinnamon BETA

This hits at about the same time on every boot. I have three network
interfaces on this thing and none of them work. DHCPDISCOVER times out
regardless of which interface and a variety of drivers I've tried. I am
assuming this kernel message has something to do with it but this is as
far as I can go debugging it myself.


[   85.870765] ------------[ cut here ]------------
[   85.870805] WARNING: CPU: 6 PID: 0 at 
/build/linux-Ay7j_C/linux-4.4.0/net/sched/sch_generic.c:303 
dev_watchdog+0x237/0x240()
[   85.870812] NETDEV WATCHDOG: enx52c573b78076 (rndis_host): transmit queue 0 
timed out
[   85.870817] Modules linked in: bnep appletalk ipx p8023 p8022 psnap llc 
binfmt_misc input_leds rndis_host btusb cdc_ether btrtl usbnet kvm_amd mii 
btbcm btintel kvm bluetooth snd_hda_codec_hdmi irqbypass crct10dif_pclmul 
crc32_pclmul aesni_intel aes_x86_64 lrw gf128mul glue_helper 
snd_hda_codec_realtek snd_hda_codec_generic ablk_helper snd_hda_intel 
snd_hda_codec snd_hda_core snd_hwdep cryptd snd_pcm snd_seq_midi 
snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device fam15h_power snd_timer 
snd soundcore k10temp serio_raw edac_mce_amd edac_core i2c_piix4 8250_fintek 
shpchp tpm_infineon mac_hid arc4 rtl8192ce rtl_pci rtl8192c_common rtlwifi 
mac80211 cfg80211 parport_pc ppdev lp parport autofs4 btrfs xor raid6_pq 
dm_mirror dm_region_hash dm_log uas usb_storage hid_generic usbhid hid 
pata_acpi nouveau
[   85.870931]  mxm_wmi video i2c_algo_bit ttm drm_kms_helper psmouse 
syscopyarea sysfillrect sysimgblt e1000 fb_sys_fops r8168(OE) drm pata_atiixp 
ahci libahci fjes wmi
[   85.870970] CPU: 6 PID: 0 Comm: swapper/6 Tainted: G           OE   
4.4.0-21-generic #37-Ubuntu
[   85.870979] Hardware name: Gigabyte Technology Co., Ltd. To be filled by 
O.E.M./990FXA-UD3 R5, BIOS F2 04/01/2015
[   85.870983]  0000000000000286 0ac494321b2d7f1a ffff88022ed83d98 
ffffffff813e93c3
[   85.870998]  ffff88022ed83de0 ffffffff81d622b8 ffff88022ed83dd0 
ffffffff81080f62
[   85.871008]  0000000000000000 ffff8802214aba80 0000000000000006 
ffff8800c9504000
[   85.871017] Call Trace:
[   85.871034]  <IRQ>  [<ffffffff813e93c3>] dump_stack+0x63/0x90
[   85.871047]  [<ffffffff81080f62>] warn_slowpath_common+0x82/0xc0
[   85.871051]  [<ffffffff81080ffc>] warn_slowpath_fmt+0x5c/0x80
[   85.871059]  [<ffffffff81741217>] dev_watchdog+0x237/0x240
[   85.871069]  [<ffffffff81740fe0>] ? qdisc_rcu_free+0x40/0x40
[   85.871084]  [<ffffffff810ec345>] call_timer_fn+0x35/0x120
[   85.871092]  [<ffffffff81740fe0>] ? qdisc_rcu_free+0x40/0x40
[   85.871098]  [<ffffffff810eccfa>] run_timer_softirq+0x23a/0x2f0
[   85.871103]  [<ffffffff810859a1>] __do_softirq+0x101/0x290
[   85.871116]  [<ffffffff81085ca3>] irq_exit+0xa3/0xb0
[   85.871122]  [<ffffffff81826fa2>] smp_apic_timer_interrupt+0x42/0x50
[   85.871133]  [<ffffffff81825262>] apic_timer_interrupt+0x82/0x90
[   85.871138]  <EOI>  [<ffffffff816bb9f1>] ? cpuidle_enter_state+0x111/0x2b0
[   85.871147]  [<ffffffff816bbbc7>] cpuidle_enter+0x17/0x20
[   85.871153]  [<ffffffff810c3d52>] call_cpuidle+0x32/0x60
[   85.871156]  [<ffffffff816bbba3>] ? cpuidle_select+0x13/0x20
[   85.871161]  [<ffffffff810c4010>] cpu_startup_entry+0x290/0x350
[   85.871166]  [<ffffffff810516f4>] start_secondary+0x154/0x190
[   85.871175] ---[ end trace 3764bf52c2ae1ced ]---

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

-- 
kernel warning about 'watchdog' kills networking
https://bugs.launchpad.net/bugs/1592856
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