BenjaminB
Posts: 12
Joined: Thu Dec 20, 2018 9:07 am

Losing connection

Thu Mar 14, 2019 10:53 am

Hello,

My name is Benjamin and I work in Escape Game props. I use Raspi as server for some of my systems.

Sometimes, some of my pis disconnect form the network without I know why. They are headless so the only way to get them connected again is a brutal power shutdown.

I added parameters to config.txt but that seems to be ineffective..

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dtparam=eee=off
max_usb_current=1
The last Pi where the problem appears is a 3B+ with Stretch, but a 3B with Jessie does the same time to time...

Someone get any idea ?

Cordially,

PS: I have some homemade USB systems connected to the pi, using virtual serial.

Code: Select all

> lsb_release -a
No LSB modules are available.
Distributor ID: Raspbian
Description:    Raspbian GNU/Linux 9.6 (stretch)
Release:        9.6
Codename:       stretch

Code: Select all

> uname -a
Linux myPi 4.14.79-v7+ #1159 SMP Sun Nov 4 17:50:20 GMT 2018 armv7l GNU/Linux

Code: Select all

> less syslog
...
Mar 13 20:34:01 myPi CRON[4282]: (root) CMD (/home/pi/smartstart/smartstart.sh)
Mar 13 20:35:01 myPi CRON[4710]: (root) CMD (/home/pi/updateIp/updateIp.sh)
Mar 13 20:35:01 myPi CRON[4712]: (root) CMD (/home/pi/smartstart/smartstart.sh)
Mar 13 20:36:01 myPi CRON[5128]: (root) CMD (/home/pi/smartstart/smartstart.sh)
Mar 13 20:37:01 myPi CRON[5549]: (root) CMD (/home/pi/smartstart/smartstart.sh)
Mar 13 20:38:01 myPi CRON[5966]: (root) CMD (/home/pi/smartstart/smartstart.sh)
Mar 13 20:39:01 myPi systemd[1]: Starting Clean php session files...
Mar 13 20:39:01 myPi CRON[6397]: (root) CMD (  [ -x /usr/lib/php/sessionclean ] && if [ ! -d /run/systemd/system ]; then /usr/lib/php/sessionclean; fi)
Mar 13 20:39:01 myPi CRON[6401]: (root) CMD (/home/pi/smartstart/smartstart.sh)
Mar 13 20:39:02 myPi systemd[1]: Started Clean php session files.
Mar 13 20:40:01 myPi CRON[6871]: (root) CMD (/home/pi/updateIp/updateIp.sh)
Mar 13 20:40:01 myPi CRON[6874]: (root) CMD (/home/pi/smartstart/smartstart.sh)
Mar 13 20:41:01 myPi CRON[7298]: (root) CMD (/home/pi/smartstart/smartstart.sh)
Mar 13 20:41:14 myPi kernel: [32187.095704] cdc_acm 1-1.1.3.1:1.0: failed to set dtr/rts
Mar 13 20:41:16 myPi kernel: [32188.281157] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 13 20:41:16 myPi kernel: [32188.281363] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 13 20:41:16 myPi kernel: [32188.281471] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 13 20:41:16 myPi kernel: [32188.281556] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 13 20:41:16 myPi kernel: [32188.281812] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 13 20:41:16 myPi kernel: [32188.282380] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 13 20:41:16 myPi kernel: [32188.282677] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 13 20:41:16 myPi kernel: [32188.283092] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 13 20:41:16 myPi kernel: [32188.283348] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 13 20:41:16 myPi kernel: [32188.284452] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 13 20:41:16 myPi kernel: [32188.284490] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 13 20:41:16 myPi kernel: [32188.284671] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 13 20:41:17 myPi kernel: [32189.579645] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffffb9
Mar 13 20:41:19 myPi kernel: [32191.324437] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 13 20:41:27 myPi kernel: [32199.819489] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffffb9
Mar 13 20:41:37 myPi kernel: [32210.059985] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffffb9
Mar 13 20:41:38 myPi kernel: [32210.335208] cdc_acm 1-1.1.3.1:1.0: failed to set dtr/rts
Mar 13 20:41:48 myPi kernel: [32220.939854] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffffb9
Mar 13 20:41:49 myPi kernel: [32221.432861] cdc_acm 1-1.1.3.1:1.0: failed to set dtr/rts
Mar 13 20:42:00 myPi kernel: [32232.459903] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffffb9
Mar 13 20:42:00 myPi kernel: [32232.497689] cdc_acm 1-1.1.3.1:1.0: failed to set dtr/rts
Mar 13 20:42:01 myPi CRON[7715]: (root) CMD (/home/pi/smartstart/smartstart.sh)
Mar 13 20:42:11 myPi kernel: [32243.340706] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffffb9
Mar 13 20:42:32 myPi kernel: [32264.460205] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffffb9
Mar 13 20:42:43 myPi kernel: [32275.860822] cdc_acm 1-1.1.3.4.2.3:1.0: failed to set dtr/rts
Mar 13 20:42:43 myPi kernel: [32275.980588] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffffb9
Mar 13 20:42:54 myPi kernel: [32286.860315] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffffb9
...

User avatar
B.Goode
Posts: 8921
Joined: Mon Sep 01, 2014 4:03 pm
Location: UK

Re: Losing connection

Thu Mar 14, 2019 11:07 am

Welcome to the Raspberry Pi forums.

Maybe the recent advice given here viewtopic.php?f=28&t=235817&p=1441967#p1441967 might be broadly applicable to your situation?

That is, perhaps install a similar RPi in the same power and network environment, but without your custom hardware and software customisations. That might help narrow down whether it is the basic RPi+Raspbian, the environment, or your own customisation that are the root of the issue.

BenjaminB
Posts: 12
Joined: Thu Dec 20, 2018 9:07 am

Re: Losing connection

Thu Mar 14, 2019 12:25 pm

Thank you,

Well, I have no error about DHCP or carrier lost. As far I know, it's the same chip for USB and Ethernet on the raspi ?
Unfortunately, the crash appears randomly and spaced, and, the system is already installed so I can't unplug to test. As far I know, there was no disconnection on my pi used for test, without USB or with USB...
Is there some other logs to check ?

Cordially,

lbog
Posts: 186
Joined: Sun Mar 06, 2016 9:44 am

Re: Losing connection

Thu Mar 14, 2019 1:16 pm

BenjaminB wrote:
Thu Mar 14, 2019 10:53 am
I added parameters to config.txt but that seems to be ineffective..

Code: Select all

dtparam=eee=off
max_usb_current=1
..., but a 3B with Jessie does the same time to time...
BTW: For the PI3B with Jessie, 'eee' is a unknown parameter:

Code: Select all

004656.298: dtparam: eee=off
004662.068: Unknown dtparam 'eee' - ignored

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sudo vcdbg log msg
Try with:

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sudo apt-get install iputils-arping tcpdump
and with 2 cronjobs in the /etc/crontab:

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*/2 *	* * *	root /usr/bin/arping -q -c 2 -A -I eth0 -s <IP-Address-PI> 255.255.255.255 > /dev/null 2>&1
* *    * * *	root /usr/bin/arping -q -c 3 -w 10 -b -f -I eth0 -s <IP-Address-PI> <IP-Address-Router> > /dev/null 2>&1
In the (W)LAN you can sniff the arpings from your PI:

Code: Select all

sudo tcpdump -c 100 -vvveni <Interface> arp
Last edited by lbog on Thu Mar 14, 2019 3:25 pm, edited 1 time in total.

BenjaminB
Posts: 12
Joined: Thu Dec 20, 2018 9:07 am

Re: Losing connection

Thu Mar 14, 2019 2:36 pm

Hello lbog and thank you,
BTW: For the PI3B with Jessie, 'eee' is a unknown parameter:
My bad, it's not set on my 3B, only on my 3B+.

What is the purpose of the 2 cronjobs ?

Cordially,

lbog
Posts: 186
Joined: Sun Mar 06, 2016 9:44 am

Re: Losing connection

Thu Mar 14, 2019 3:21 pm

BenjaminB wrote:
Thu Mar 14, 2019 2:36 pm
What is the purpose of the 2 cronjobs ?
To broadcast arp update (for the Raspi) to all devices (neighbors) in your (W)LAN.

BenjaminB
Posts: 12
Joined: Thu Dec 20, 2018 9:07 am

Re: Losing connection

Thu Mar 14, 2019 4:22 pm

Ok, I will add this jobs.
But, logs show an error of communication between the ARM and the LAN78, ARP seems not implicated, no ?
Cdlt,

e-raser
Posts: 71
Joined: Sat Apr 04, 2015 1:30 pm

Re: Losing connection

Sun Mar 17, 2019 11:35 pm

Hi there,

I´m very lucky a google search on "lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped" brought me to this topic. My Pi 3 B+ suffers from this error for months. Developers on Github really don´t care about this.

I think my setup is pretty similar; I have some HDDs attached to the Pi using SATA to USB converters.

I see those tons of "lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped" lines in /var/log/kern.log especially when transferring a lot of data (Pi is connected via Ethernet). Maybe the ethernet chip is getting too hot?

Workaround for me is the same: I need to reboot the Pi (only able from console cause network is TOTALLY DEAD in this situation), there´s no way to get the network interface back working (ifup/ifdown etc.), I guess it´s either a hardware issue (temperature) or a timing/firmware bug.

Too bad nobody cares... I´m fighting with the 3 B+ hardware for almost one year now, making almost no progress. Any help appreciated!

Attached the part of kern.log from the last occurence few minutes ago:

Mar 17 20:03:43 raspberrypi kernel: [64141.838662] INFO: task kworker/2:1:13666 blocked for more than 120 seconds.

Code: Select all

Mar 17 20:03:43 raspberrypi kernel: [64141.838676]       Tainted: G         C        4.19.25-v7+ #1205
Mar 17 20:03:43 raspberrypi kernel: [64141.838682] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Mar 17 20:03:43 raspberrypi kernel: [64141.838691] kworker/2:1     D    0 13666      2 0x00000000
Mar 17 20:03:43 raspberrypi kernel: [64141.838731] Workqueue: events_freezable mmc_rescan
Mar 17 20:03:43 raspberrypi kernel: [64141.838768] [<8082414c>] (__schedule) from [<808247bc>] (schedule+0x50/0xa8)
Mar 17 20:03:43 raspberrypi kernel: [64141.838788] [<808247bc>] (schedule) from [<8067b510>] (__mmc_claim_host+0x120/0x228)
Mar 17 20:03:43 raspberrypi kernel: [64141.838807] [<8067b510>] (__mmc_claim_host) from [<8067b650>] (mmc_get_card+0x38/0x3c)
Mar 17 20:03:43 raspberrypi kernel: [64141.838825] [<8067b650>] (mmc_get_card) from [<806846b8>] (mmc_sd_detect+0x24/0x7c)
Mar 17 20:03:43 raspberrypi kernel: [64141.838843] [<806846b8>] (mmc_sd_detect) from [<8067dc6c>] (mmc_rescan+0x1cc/0x39c)
Mar 17 20:03:43 raspberrypi kernel: [64141.838864] [<8067dc6c>] (mmc_rescan) from [<8013bcf4>] (process_one_work+0x170/0x458)
Mar 17 20:03:43 raspberrypi kernel: [64141.838882] [<8013bcf4>] (process_one_work) from [<8013c038>] (worker_thread+0x5c/0x5a4)
Mar 17 20:03:43 raspberrypi kernel: [64141.838901] [<8013c038>] (worker_thread) from [<80142324>] (kthread+0x138/0x168)
Mar 17 20:03:43 raspberrypi kernel: [64141.838920] [<80142324>] (kthread) from [<801010ac>] (ret_from_fork+0x14/0x28)
Mar 17 20:03:43 raspberrypi kernel: [64141.838929] Exception stack(0xa3f1dfb0 to 0xa3f1dff8)
Mar 17 20:03:43 raspberrypi kernel: [64141.838940] dfa0:                                     00000000 00000000 00000000 00000000
Mar 17 20:03:43 raspberrypi kernel: [64141.838954] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Mar 17 20:03:43 raspberrypi kernel: [64141.838964] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
Mar 17 20:05:45 raspberrypi kernel: [64264.719276] INFO: task kworker/2:1:13666 blocked for more than 120 seconds.
Mar 17 20:05:45 raspberrypi kernel: [64264.719284]       Tainted: G         C        4.19.25-v7+ #1205
Mar 17 20:05:45 raspberrypi kernel: [64264.719287] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Mar 17 20:05:45 raspberrypi kernel: [64264.719291] kworker/2:1     D    0 13666      2 0x00000000
Mar 17 20:05:45 raspberrypi kernel: [64264.719308] Workqueue: events_freezable mmc_rescan
Mar 17 20:05:45 raspberrypi kernel: [64264.719327] [<8082414c>] (__schedule) from [<808247bc>] (schedule+0x50/0xa8)
Mar 17 20:05:45 raspberrypi kernel: [64264.719335] [<808247bc>] (schedule) from [<8067b510>] (__mmc_claim_host+0x120/0x228)
Mar 17 20:05:45 raspberrypi kernel: [64264.719344] [<8067b510>] (__mmc_claim_host) from [<8067b650>] (mmc_get_card+0x38/0x3c)
Mar 17 20:05:45 raspberrypi kernel: [64264.719351] [<8067b650>] (mmc_get_card) from [<806846b8>] (mmc_sd_detect+0x24/0x7c)
Mar 17 20:05:45 raspberrypi kernel: [64264.719360] [<806846b8>] (mmc_sd_detect) from [<8067dc6c>] (mmc_rescan+0x1cc/0x39c)
Mar 17 20:05:45 raspberrypi kernel: [64264.719369] [<8067dc6c>] (mmc_rescan) from [<8013bcf4>] (process_one_work+0x170/0x458)
Mar 17 20:05:45 raspberrypi kernel: [64264.719378] [<8013bcf4>] (process_one_work) from [<8013c038>] (worker_thread+0x5c/0x5a4)
Mar 17 20:05:45 raspberrypi kernel: [64264.719386] [<8013c038>] (worker_thread) from [<80142324>] (kthread+0x138/0x168)
Mar 17 20:05:45 raspberrypi kernel: [64264.719396] [<80142324>] (kthread) from [<801010ac>] (ret_from_fork+0x14/0x28)
Mar 17 20:05:45 raspberrypi kernel: [64264.719400] Exception stack(0xa3f1dfb0 to 0xa3f1dff8)
Mar 17 20:05:45 raspberrypi kernel: [64264.719405] dfa0:                                     00000000 00000000 00000000 00000000
Mar 17 20:05:45 raspberrypi kernel: [64264.719410] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Mar 17 20:05:45 raspberrypi kernel: [64264.719415] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
Mar 17 22:45:13 raspberrypi kernel: [73832.588054] lan78xx 1-1.1.1:1.0 eth0: Failed to read register index 0x00000124. ret = -71
Mar 17 23:09:47 raspberrypi kernel: [75306.831676] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.831699] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.838579] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.838599] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.838712] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.838806] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.838871] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.838950] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.839043] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.839159] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.839299] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.839506] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.839512] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.839584] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.839647] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.839709] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.839768] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.839831] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.839915] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.839977] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.840037] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.852434] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.852525] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.852596] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.852675] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.852739] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:47 raspberrypi kernel: [75306.852753] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:09:49 raspberrypi kernel: [75308.776042] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:10:03 raspberrypi kernel: [75323.442118] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:10:03 raspberrypi kernel: [75323.442736] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:10:11 raspberrypi kernel: [75331.327503] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:10:29 raspberrypi kernel: [75349.095308] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:10:29 raspberrypi kernel: [75349.095595] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:10:29 raspberrypi kernel: [75349.095853] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:10:58 raspberrypi kernel: [75378.388046] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:12:38 raspberrypi kernel: [75477.817164] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:12:38 raspberrypi kernel: [75477.817388] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:13:46 raspberrypi kernel: [75546.194912] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:16:20 raspberrypi kernel: [75700.458291] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:17:02 raspberrypi kernel: [75742.542474] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:17:03 raspberrypi kernel: [75743.292989] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:23:43 raspberrypi kernel: [76143.133951] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:23:43 raspberrypi kernel: [76143.134009] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:23:43 raspberrypi kernel: [76143.134040] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:23:43 raspberrypi kernel: [76143.334360] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:23:43 raspberrypi kernel: [76143.334385] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:23:43 raspberrypi kernel: [76143.534683] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:23:43 raspberrypi kernel: [76143.534713] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:26:01 raspberrypi kernel: [76280.637637] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:38:39 raspberrypi kernel: [77038.635259] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:38:39 raspberrypi kernel: [77038.635281] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:38:39 raspberrypi kernel: [77038.835559] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:38:39 raspberrypi kernel: [77038.835590] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:38:39 raspberrypi kernel: [77038.835836] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:38:39 raspberrypi kernel: [77039.036039] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:38:39 raspberrypi kernel: [77039.036062] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:39:22 raspberrypi kernel: [77082.541721] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:39:24 raspberrypi kernel: [77084.546370] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:46:03 raspberrypi kernel: [77482.748473] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:53:34 raspberrypi kernel: [77934.140793] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:53:34 raspberrypi kernel: [77934.340912] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:53:34 raspberrypi kernel: [77934.340935] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:53:34 raspberrypi kernel: [77934.541406] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:53:34 raspberrypi kernel: [77934.541430] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:56:03 raspberrypi kernel: [78082.699866] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 17 23:57:06 raspberrypi kernel: [78146.192965] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:00:00 raspberrypi kernel: [78320.459581] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:00:01 raspberrypi kernel: [78321.460889] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:00:03 raspberrypi kernel: [78323.463437] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:00:05 raspberrypi kernel: [78325.466122] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:00:06 raspberrypi kernel: [78326.468000] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:00:08 raspberrypi kernel: [78328.470142] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:00:10 raspberrypi kernel: [78330.480437] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:00:11 raspberrypi kernel: [78331.482309] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:00:13 raspberrypi kernel: [78333.483202] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:00:15 raspberrypi kernel: [78335.487880] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:00:16 raspberrypi kernel: [78336.488763] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:00:18 raspberrypi kernel: [78338.490788] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:06:01 raspberrypi kernel: [78680.980214] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:06:01 raspberrypi kernel: [78680.980507] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:06:02 raspberrypi kernel: [78681.729371] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:06:02 raspberrypi kernel: [78681.729513] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:06:02 raspberrypi kernel: [78682.479617] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:06:02 raspberrypi kernel: [78682.479785] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:07:03 raspberrypi kernel: [78743.196356] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:07:03 raspberrypi kernel: [78743.196530] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:07:03 raspberrypi kernel: [78743.196655] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:07:04 raspberrypi kernel: [78743.946900] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:07:04 raspberrypi kernel: [78743.947186] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:07:05 raspberrypi kernel: [78744.697066] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:07:05 raspberrypi kernel: [78744.697210] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:08:02 raspberrypi kernel: [78802.318266] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:08:02 raspberrypi kernel: [78802.318774] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:08:03 raspberrypi kernel: [78803.068705] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:08:03 raspberrypi kernel: [78803.069137] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:08:04 raspberrypi kernel: [78803.818701] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:08:04 raspberrypi kernel: [78803.818842] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:08:30 raspberrypi kernel: [78829.638855] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:08:30 raspberrypi kernel: [78829.638884] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:08:30 raspberrypi kernel: [78829.638924] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:08:30 raspberrypi kernel: [78829.638969] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:08:30 raspberrypi kernel: [78829.639005] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:08:30 raspberrypi kernel: [78829.839376] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:08:30 raspberrypi kernel: [78829.839410] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:08:30 raspberrypi kernel: [78830.039848] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:09:54 raspberrypi kernel: [78913.919991] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:10:10 raspberrypi kernel: [78930.293380] warning: `/bin/ping' has both setuid-root and effective capabilities. Therefore not raising all capabilities.
Mar 18 00:11:06 raspberrypi kernel: [78985.890006] Bluetooth: hci0: sending frame failed (-49)
Mar 18 00:11:06 raspberrypi kernel: [78986.359017] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:11:07 raspberrypi kernel: [78986.721893] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:11:07 raspberrypi kernel: [78986.721969] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:11:07 raspberrypi kernel: [78986.722010] lan78xx 1-1.1.1:1.0 eth0: kevent 0 may have been dropped
Mar 18 00:11:36 raspberrypi kernel: [    0.000000] Booting Linux on physical CPU 0x0
Mar 18 00:11:36 raspberrypi kernel: [    0.000000] Linux version 4.19.25-v7+ (dom@dom-XPS-13-9370) (gcc version 4.9.3 (crosstool-NG crosstool-ng-1.22.0-88-g8460611)) #1205 SMP Mon Feb 25 18:19:20 GMT 2019
Mar 18 00:11:36 raspberrypi kernel: [    0.000000] CPU: ARMv7 Processor [410fd034] revision 4 (ARMv7), cr=10c5383d
1x Nextcloud & Pi-hole & ... on Raspbian @ Pi (4 4 GB)
1x Kodi media center on LibreELEC @ Pi 3 B+

BenjaminB
Posts: 12
Joined: Thu Dec 20, 2018 9:07 am

Re: Losing connection

Mon Mar 18, 2019 7:52 am

Hi,

Damn, that's not really encouraging ^^'

Well, I'll attach just 2 or 3 systems per Pi. New setup will no longer use USB but all systems will communicate witch Ethernet, so the problem will disappear, I hope...

If some one have any other idea, I'm still listening.

Have a good day,
Cordially,

BenjaminB
Posts: 12
Joined: Thu Dec 20, 2018 9:07 am

Re: Losing connection

Fri Mar 22, 2019 8:26 am

Hello again,

So, 2 of my pi crashed yesterday. But this time, I had a message from the kernel. I don't understand what it means, someone have an idea ? It's a watchdog problem, a timeout problem in communication witch lan78xx ?

Thank you,

Code: Select all

Mar 21 11:59:21 pi1 kernel: [ 8343.377849] cdc_acm 1-1.1.3.3.4:1.0: failed to set dtr/rts
Mar 21 11:59:24 pi1 kernel: [ 8345.929968] cdc_acm 1-1.1.3.3.4:1.0: failed to set dtr/rts
Mar 21 11:59:25 pi1 kernel: [ 8347.219230] cdc_acm 1-1.1.3.3.4:1.0: failed to set dtr/rts
Mar 21 11:59:26 pi1 kernel: [ 8348.611523] cdc_acm 1-1.1.3.3.4:1.0: failed to set dtr/rts
Mar 21 11:59:28 pi1 kernel: [ 8350.565576] cdc_acm 1-1.1.3.3.4:1.0: failed to set dtr/rts
Mar 21 11:59:29 pi1 kernel: [ 8351.608177] cdc_acm 1-1.1.3.3.4:1.0: failed to set dtr/rts
Mar 21 11:59:30 pi1 kernel: [ 8352.218040] cdc_acm 1-1.1.3.3.4:1.0: failed to set dtr/rts
Mar 21 11:59:35 pi1 kernel: [ 8357.414875] cdc_acm 1-1.1.3.1:1.0: failed to set dtr/rts
Mar 21 11:59:40 pi1 kernel: [ 8362.454927] cdc_acm 1-1.1.3.4.2.3:1.0: failed to set dtr/rts
Mar 21 11:59:42 pi1 kernel: [ 8363.974946] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffff92
Mar 21 11:59:45 pi1 kernel: [ 8367.494960] cdc_acm 1-1.1.3.4.3.4:1.0: failed to set dtr/rts
Mar 21 11:59:50 pi1 kernel: [ 8372.534992] cdc_acm 1-1.1.3.3.4:1.0: failed to set dtr/rts
Mar 21 11:59:56 pi1 kernel: [ 8378.625044] cdc_acm 1-1.1.3.1:1.0: failed to set dtr/rts
Mar 21 12:00:01 pi1 kernel: [ 8383.175100] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffff92
Mar 21 12:00:01 pi1 CRON[30020]: (root) CMD (/home/pi/smartstart/smartstart.sh)
Mar 21 12:00:01 pi1 CRON[30019]: (root) CMD (/home/pi/updateIp/updateIp.sh)
Mar 21 12:00:01 pi1 kernel: [ 8383.655177] cdc_acm 1-1.1.3.4.2.3:1.0: failed to set dtr/rts
Mar 21 12:00:06 pi1 kernel: [ 8388.695109] cdc_acm 1-1.1.3.4.3.4:1.0: failed to set dtr/rts
Mar 21 12:00:11 pi1 kernel: [ 8393.735150] cdc_acm 1-1.1.3.3.4:1.0: failed to set dtr/rts
Mar 21 12:00:17 pi1 kernel: [ 8399.175206] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffff92
Mar 21 12:00:18 pi1 kernel: [ 8399.815206] cdc_acm 1-1.1.3.1:1.0: failed to set dtr/rts
Mar 21 12:00:23 pi1 kernel: [ 8404.855237] cdc_acm 1-1.1.3.4.2.3:1.0: failed to set dtr/rts
Mar 21 12:00:27 pi1 kernel: [ 8409.095210] ------------[ cut here ]------------
Mar 21 12:00:27 pi1 kernel: [ 8409.095279] WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:320 dev_watchdog+0x294/0x298
Mar 21 12:00:27 pi1 kernel: [ 8409.095292] NETDEV WATCHDOG: eth0 (lan78xx): transmit queue 0 timed out
Mar 21 12:00:27 pi1 kernel: [ 8409.095300] Modules linked in: bnep hci_uart btbcm serdev bluetooth ecdh_generic cdc_acm brcmfmac brcmutil snd_bcm2835(C) cfg80211 rfkill snd_pcm snd_timer snd uio_pdrv_genirq fixed uio ip_tables x_tables ipv6
Mar 21 12:00:27 pi1 kernel: [ 8409.095412] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G         C      4.14.79-v7+ #1159
Mar 21 12:00:27 pi1 kernel: [ 8409.095418] Hardware name: BCM2835
Mar 21 12:00:27 pi1 kernel: [ 8409.095461] [<8010ff30>] (unwind_backtrace) from [<8010c174>] (show_stack+0x20/0x24)
Mar 21 12:00:27 pi1 kernel: [ 8409.095478] [<8010c174>] (show_stack) from [<80788fa4>] (dump_stack+0xd4/0x118)
Mar 21 12:00:27 pi1 kernel: [ 8409.095495] [<80788fa4>] (dump_stack) from [<8011dd50>] (__warn+0xf8/0x110)
Mar 21 12:00:27 pi1 kernel: [ 8409.095510] [<8011dd50>] (__warn) from [<8011ddb0>] (warn_slowpath_fmt+0x48/0x50)
Mar 21 12:00:27 pi1 kernel: [ 8409.095525] [<8011ddb0>] (warn_slowpath_fmt) from [<806bffec>] (dev_watchdog+0x294/0x298)
Mar 21 12:00:27 pi1 kernel: [ 8409.095542] [<806bffec>] (dev_watchdog) from [<8018a86c>] (call_timer_fn+0x40/0x19c)
Mar 21 12:00:27 pi1 kernel: [ 8409.095558] [<8018a86c>] (call_timer_fn) from [<8018aacc>] (expire_timers+0x104/0x168)
Mar 21 12:00:27 pi1 kernel: [ 8409.095573] [<8018aacc>] (expire_timers) from [<8018abd8>] (run_timer_softirq+0xa8/0x1c8)
Mar 21 12:00:27 pi1 kernel: [ 8409.095588] [<8018abd8>] (run_timer_softirq) from [<80101694>] (__do_softirq+0x18c/0x3d8)
Mar 21 12:00:27 pi1 kernel: [ 8409.095603] [<80101694>] (__do_softirq) from [<80123aec>] (irq_exit+0x108/0x164)
Mar 21 12:00:27 pi1 kernel: [ 8409.095620] [<80123aec>] (irq_exit) from [<80175c68>] (__handle_domain_irq+0x70/0xc4)
Mar 21 12:00:27 pi1 kernel: [ 8409.095637] [<80175c68>] (__handle_domain_irq) from [<80101504>] (bcm2836_arm_irqchip_handle_irq+0xa8/0xac)
Mar 21 12:00:27 pi1 kernel: [ 8409.095654] [<80101504>] (bcm2836_arm_irqchip_handle_irq) from [<807a4b7c>] (__irq_svc+0x5c/0x7c)
Mar 21 12:00:27 pi1 kernel: [ 8409.095661] Exception stack(0xae925f38 to 0xae925f80)
Mar 21 12:00:27 pi1 kernel: [ 8409.095669] 5f20:                                                       00000000 1e1cc584
Mar 21 12:00:27 pi1 kernel: [ 8409.095682] 5f40: 2e568000 00000000 ae924000 80c03dcc 80c03d68 80c885b2 00000001 410fd034
Mar 21 12:00:27 pi1 kernel: [ 8409.095694] 5f60: 00000000 ae925f94 80c04174 ae925f88 80108a0c 80108a10 60000013 ffffffff
Mar 21 12:00:27 pi1 kernel: [ 8409.095711] [<807a4b7c>] (__irq_svc) from [<80108a10>] (arch_cpu_idle+0x34/0x4c)
Mar 21 12:00:27 pi1 kernel: [ 8409.095730] [<80108a10>] (arch_cpu_idle) from [<807a42dc>] (default_idle_call+0x34/0x48)
Mar 21 12:00:27 pi1 kernel: [ 8409.095747] [<807a42dc>] (default_idle_call) from [<8016177c>] (do_idle+0xd8/0x150)
Mar 21 12:00:27 pi1 kernel: [ 8409.095762] [<8016177c>] (do_idle) from [<80161a90>] (cpu_startup_entry+0x28/0x2c)
Mar 21 12:00:27 pi1 kernel: [ 8409.095778] [<80161a90>] (cpu_startup_entry) from [<8010deac>] (secondary_start_kernel+0x134/0x140)
Mar 21 12:00:27 pi1 kernel: [ 8409.095792] [<8010deac>] (secondary_start_kernel) from [<0010196c>] (0x10196c)
Mar 21 12:00:27 pi1 kernel: [ 8409.095804] ---[ end trace 7f340fde935d4eb4 ]---
Mar 21 12:00:28 pi1 kernel: [ 8409.895287] cdc_acm 1-1.1.3.4.3.4:1.0: failed to set dtr/rts
Mar 21 12:00:33 pi1 kernel: [ 8414.935346] cdc_acm 1-1.1.3.3.4:1.0: failed to set dtr/rts
Mar 21 12:00:33 pi1 kernel: [ 8415.175320] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffff92
Mar 21 12:00:39 pi1 kernel: [ 8421.015369] cdc_acm 1-1.1.3.1:1.0: failed to set dtr/rts
Mar 21 12:00:44 pi1 kernel: [ 8426.055400] cdc_acm 1-1.1.3.4.2.3:1.0: failed to set dtr/rts
Mar 21 12:00:49 pi1 kernel: [ 8431.095478] cdc_acm 1-1.1.3.4.3.4:1.0: failed to set dtr/rts
Mar 21 12:00:50 pi1 kernel: [ 8432.455462] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffff92
Mar 21 12:00:54 pi1 kernel: [ 8436.135518] cdc_acm 1-1.1.3.3.4:1.0: failed to set dtr/rts
Mar 21 12:01:00 pi1 kernel: [ 8442.215557] cdc_acm 1-1.1.3.1:1.0: failed to set dtr/rts
Mar 21 12:01:01 pi1 CRON[30458]: (root) CMD (/home/pi/smartstart/smartstart.sh)
Mar 21 12:01:05 pi1 kernel: [ 8447.255570] cdc_acm 1-1.1.3.4.2.3:1.0: failed to set dtr/rts
Mar 21 12:01:06 pi1 kernel: [ 8448.455583] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffff92
Mar 21 12:01:10 pi1 kernel: [ 8452.305619] cdc_acm 1-1.1.3.4.3.4:1.0: failed to set dtr/rts
Mar 21 12:01:15 pi1 kernel: [ 8457.335637] cdc_acm 1-1.1.3.3.4:1.0: failed to set dtr/rts
Mar 21 12:01:21 pi1 kernel: [ 8463.415716] cdc_acm 1-1.1.3.1:1.0: failed to set dtr/rts
Mar 21 12:01:22 pi1 kernel: [ 8464.455693] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffff92
Mar 21 12:01:26 pi1 kernel: [ 8468.455771] cdc_acm 1-1.1.3.4.2.3:1.0: failed to set dtr/rts
Mar 21 12:01:31 pi1 kernel: [ 8473.495757] cdc_acm 1-1.1.3.4.3.4:1.0: failed to set dtr/rts
Mar 21 12:01:36 pi1 kernel: [ 8478.535813] cdc_acm 1-1.1.3.3.4:1.0: failed to set dtr/rts
Mar 21 12:01:38 pi1 kernel: [ 8479.815814] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffff92
Mar 21 12:01:42 pi1 kernel: [ 8484.615942] cdc_acm 1-1.1.3.1:1.0: failed to set dtr/rts
Mar 21 12:01:47 pi1 kernel: [ 8489.655893] cdc_acm 1-1.1.3.4.2.3:1.0: failed to set dtr/rts
Mar 21 12:01:52 pi1 kernel: [ 8494.695925] cdc_acm 1-1.1.3.4.3.4:1.0: failed to set dtr/rts
Mar 21 12:01:54 pi1 kernel: [ 8496.456160] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffff92
Mar 21 12:01:57 pi1 kernel: [ 8499.735968] cdc_acm 1-1.1.3.3.4:1.0: failed to set dtr/rts
Mar 21 12:02:01 pi1 CRON[30882]: (root) CMD (/home/pi/smartstart/smartstart.sh)
Mar 21 12:02:04 pi1 kernel: [ 8505.816012] cdc_acm 1-1.1.3.1:1.0: failed to set dtr/rts
Mar 21 12:02:09 pi1 kernel: [ 8510.856095] cdc_acm 1-1.1.3.4.2.3:1.0: failed to set dtr/rts
Mar 21 12:02:10 pi1 kernel: [ 8511.816071] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffff92
Mar 21 12:02:14 pi1 kernel: [ 8515.896088] cdc_acm 1-1.1.3.4.3.4:1.0: failed to set dtr/rts
Mar 21 12:02:19 pi1 kernel: [ 8520.936124] cdc_acm 1-1.1.3.3.4:1.0: failed to set dtr/rts
Mar 21 12:02:25 pi1 kernel: [ 8527.016176] cdc_acm 1-1.1.3.1:1.0: failed to set dtr/rts
Mar 21 12:02:26 pi1 kernel: [ 8528.456206] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffff92
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^

Code: Select all

Mar 21 13:30:01 pi2 CRON[9920]: (root) CMD (/home/pi/updateIp/updateIp.sh)
Mar 21 13:30:01 pi2 CRON[9923]: (root) CMD (/home/pi/smartstart/smartstart.sh)
Mar 21 13:30:04 pi2 kernel: [10034.471872] cdc_acm 1-1.1.3.4.2:1.0: failed to set dtr/rts
Mar 21 13:30:08 pi2 kernel: [10038.549814] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffff92
Mar 21 13:30:09 pi2 kernel: [10039.509329] cdc_acm 1-1.1.3.3.4:1.0: failed to set dtr/rts
Mar 21 13:30:14 pi2 kernel: [10044.546807] cdc_acm 1-1.1.3.1.4:1.0: failed to set dtr/rts
Mar 21 13:30:19 pi2 kernel: [10049.584291] cdc_acm 1-1.1.3.2.4:1.0: failed to set dtr/rts
Mar 21 13:30:23 pi2 kernel: [10053.902133] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffff92
Mar 21 13:30:24 pi2 kernel: [10054.621834] cdc_acm 1-1.1.3.4.1:1.0: failed to set dtr/rts
Mar 21 13:30:29 pi2 kernel: [10059.659282] cdc_acm 1-1.1.3.4.2:1.0: failed to set dtr/rts
Mar 21 13:30:34 pi2 kernel: [10064.696735] cdc_acm 1-1.1.3.3.4:1.0: failed to set dtr/rts
Mar 21 13:30:40 pi2 kernel: [10070.773682] cdc_acm 1-1.1.3.1.4:1.0: failed to set dtr/rts
Mar 21 13:30:40 pi2 kernel: [10071.093469] ------------[ cut here ]------------
Mar 21 13:30:40 pi2 kernel: [10071.093527] WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:320 dev_watchdog+0x294/0x298
Mar 21 13:30:40 pi2 kernel: [10071.093538] NETDEV WATCHDOG: eth0 (lan78xx): transmit queue 0 timed out
Mar 21 13:30:40 pi2 kernel: [10071.093546] Modules linked in: bnep hci_uart btbcm serdev bluetooth ecdh_generic cdc_acm brcmfmac brcmutil snd_bcm2835(C) cfg80211 snd_pcm rf
kill snd_timer snd fixed uio_pdrv_genirq uio ip_tables x_tables ipv6
Mar 21 13:30:40 pi2 kernel: [10071.093669] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G         C      4.14.98-v7+ #1200
Mar 21 13:30:40 pi2 kernel: [10071.093674] Hardware name: BCM2835
Mar 21 13:30:40 pi2 kernel: [10071.093707] [<8010ff30>] (unwind_backtrace) from [<8010c174>] (show_stack+0x20/0x24)
Mar 21 13:30:40 pi2 kernel: [10071.093724] [<8010c174>] (show_stack) from [<8078cf04>] (dump_stack+0xd4/0x118)
Mar 21 13:30:40 pi2 kernel: [10071.093742] [<8078cf04>] (dump_stack) from [<8011dd70>] (__warn+0xf8/0x110)
Mar 21 13:30:40 pi2 kernel: [10071.093756] [<8011dd70>] (__warn) from [<8011ddd0>] (warn_slowpath_fmt+0x48/0x50)
Mar 21 13:30:40 pi2 kernel: [10071.093770] [<8011ddd0>] (warn_slowpath_fmt) from [<806c3958>] (dev_watchdog+0x294/0x298)
Mar 21 13:30:40 pi2 kernel: [10071.093787] [<806c3958>] (dev_watchdog) from [<8018ab68>] (call_timer_fn+0x40/0x19c)
Mar 21 13:30:40 pi2 kernel: [10071.093803] [<8018ab68>] (call_timer_fn) from [<8018adc8>] (expire_timers+0x104/0x168)
Mar 21 13:30:40 pi2 kernel: [10071.093817] [<8018adc8>] (expire_timers) from [<8018aed4>] (run_timer_softirq+0xa8/0x1c8)
Mar 21 13:30:40 pi2 kernel: [10071.093835] [<8018aed4>] (run_timer_softirq) from [<80101694>] (__do_softirq+0x18c/0x3d8)
Mar 21 13:30:40 pi2 kernel: [10071.093851] [<80101694>] (__do_softirq) from [<80123b78>] (irq_exit+0x108/0x164)
Mar 21 13:30:40 pi2 kernel: [10071.093869] [<80123b78>] (irq_exit) from [<80175e58>] (__handle_domain_irq+0x70/0xc4)
Mar 21 13:30:40 pi2 kernel: [10071.093886] [<80175e58>] (__handle_domain_irq) from [<80101504>] (bcm2836_arm_irqchip_handle_irq+0xa8/0xac)
Mar 21 13:30:40 pi2 kernel: [10071.093901] [<80101504>] (bcm2836_arm_irqchip_handle_irq) from [<807a8afc>] (__irq_svc+0x5c/0x7c)
Mar 21 13:30:40 pi2 kernel: [10071.093908] Exception stack(0xb9d25f38 to 0xb9d25f80)
Mar 21 13:30:40 pi2 kernel: [10071.093917] 5f20:                                                       00000000 18cf3e64
Mar 21 13:30:40 pi2 kernel: [10071.093929] 5f40: 397d3000 00000000 b9d24000 80c03dcc 80c03d68 80c88ad6 00000001 410fd034
Mar 21 13:30:40 pi2 kernel: [10071.093942] 5f60: 00000000 b9d25f94 80c04174 b9d25f88 80108a0c 80108a10 60000013 ffffffff
Mar 21 13:30:40 pi2 kernel: [10071.093961] [<807a8afc>] (__irq_svc) from [<80108a10>] (arch_cpu_idle+0x34/0x4c)
Mar 21 13:30:40 pi2 kernel: [10071.093976] [<80108a10>] (arch_cpu_idle) from [<807a8274>] (default_idle_call+0x34/0x48)
Mar 21 13:30:40 pi2 kernel: [10071.093991] [<807a8274>] (default_idle_call) from [<80161784>] (do_idle+0xd8/0x150)
Mar 21 13:30:40 pi2 kernel: [10071.094006] [<80161784>] (do_idle) from [<80161a98>] (cpu_startup_entry+0x28/0x2c)
Mar 21 13:30:40 pi2 kernel: [10071.094022] [<80161a98>] (cpu_startup_entry) from [<8010deac>] (secondary_start_kernel+0x134/0x140)
Mar 21 13:30:40 pi2 kernel: [10071.094035] [<8010deac>] (secondary_start_kernel) from [<0010196c>] (0x10196c)
Mar 21 13:30:40 pi2 kernel: [10071.094048] ---[ end trace e4dcfa7646e96500 ]---
Mar 21 13:30:42 pi2 kernel: [10073.092610] lan78xx 1-1.1.1:1.0 eth0: Failed to read stat ret = 0xffffff92
Mar 21 13:30:45 pi2 kernel: [10075.811246] cdc_acm 1-1.1.3.2.4:1.0: failed to set dtr/rts
Mar 21 13:30:50 pi2 kernel: [10080.848776] cdc_acm 1-1.1.3.4.1:1.0: failed to set dtr/rts
Mar 21 13:30:55 pi2 kernel: [10085.886145] cdc_acm 1-1.1.3.4.2:1.0: failed to set dtr/rts
Mar 21 13:31:00 pi2 kernel: [10090.933619] cdc_acm 1-1.1.3.3.4:1.0: failed to set dtr/rts

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