subject:"\[etherlab\-users\] e1000e driver freeze on kernel 4.9.80 rtai 5.1"

Re: [etherlab-users] e1000e driver freeze on kernel 4.9.80 rtai 5.1

2018-09-28 Thread Gianluca Medini



Hi All, the patches fix the issue !!
Thank you very much.

Gianluca Medini


Il 27/09/2018 09:02, René Reimann ha scritto:

Hello,

we found out that the problem was in the e1000e driver, which caused 
the System to freeze under RTAI.

My colleague will later provide the code that solved the problem.

Best Regards
René Reimann


On 26.09.2018 09:55, René Reimann wrote:
We tried to use only the e1000e driver for kernel 4.9.80 and no other 
patches. Additionaly we tried the e1000e driver
for kernel 3.18.22 with rtai 5.0. The problem remains the same in 
both cases.


There is no output to the syslog when the system freezes.

On 26.09.2018 02:46, Gavin Lambert wrote:

Email Signature

One of the first things you should try is to triage the patches by 
rolling them back and then adding them one at a time and testing 
until you find which patch appears to introduce the problem (or 
whether it exists in the baseline without any patches). In most 
cases you can then try skipping that patch and applying subsequent 
ones until you find more problematic patches or you successfully 
apply the remainder.


Please share your findings so that we know where to look for the 
culprit.


(Also, if it manages to write some information to the syslog before 
freezing then that could be helpful.)


FWIW, I’ve been using PREEMPT_RT kernel 4.9.51 with e1000e for a 
long while without issues.


*From:*René Reimann
*Sent:* Tuesday, 25 September 2018 19:28
*To:* Gianluca Medini ; 
etherlab-users@etherlab.org
*Subject:* Re: [etherlab-users] e1000e driver freeze on kernel 
4.9.80 rtai 5.1


Hello,

we are experiencing the same problem with rtai 5.1 kernel 4.9.80 and 
rtai 5.0 kernel.
The system freezes randomly after several minutes with the e1000e 
and the unofficial patches.

Does somebody have an idea how to fix this?

Best Regards
René Reimann

On 23.09.2018 22:29, Gianluca Medini wrote:

Hi all, I've tested the driver e1000e on rtai 5.1 kernel 4.9.80.

I'm using Gavin Lambert unofficial patches set that includes
patched drivers for 4.9.80.

The system  freezes randomly after some  minutes.

The Igb driver on same configuration works perfectly.

Someone have experienced the same issue?

GM




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Re: [etherlab-users] e1000e driver freeze on kernel 4.9.80 rtai 5.1

2018-09-27 Thread Wilfried Holzke


Hello,

we did a lot of testing (different kernel+rtai combinations, 32/64 bit 
systems, rtai-watchdog, memtest, enabled different debugging options in 
the linux kernel), but no success.
René told me that the problems occured while using the e1000e drivers 
from the patch-set. Due to the fact that I created a e1000e driver a few 
years ago, which worked fine for many year, we started to look at this 
point. René replaced the e1000e driver from the patch-set with my 
version. The result is that the systems runs for one day without any 
problems, normaly the system freezes after minutes or a few hours.
The main differences are a few lines regarding e1000e_watchdog. I added 
these lines to the etherlab-patch-set for kernel 4.9. We tested this 
also, now for a few hours succesfully.


Here is the diff:
--
--- netdev-4.9-ethercat.c_orig  2018-09-26 20:34:17.916678969 +0200
+++ netdev-4.9-ethercat.c   2018-09-26 20:48:33.056631668 +0200
@@ -1046,6 +1046,7 @@

if (adapter->ecdev) {
ecdev_receive(adapter->ecdev, skb->data, length);
+   adapter->ec_watchdog_jiffies = jiffies;  // ADDED
} else {
e1000_receive_skb(adapter, netdev, skb, staterr,
  rx_desc->wb.upper.vlan);
@@ -1488,6 +1489,7 @@

if (adapter->ecdev) {
ecdev_receive(adapter->ecdev, skb->data, length);
+   adapter->ec_watchdog_jiffies = jiffies;  // ADDED
} else {
e1000_receive_skb(adapter, netdev, skb, staterr,
rx_desc->wb.middle.vlan);
@@ -1678,6 +1680,7 @@

if (adapter->ecdev) {
ecdev_receive(adapter->ecdev, skb->data, length);
+   adapter->ec_watchdog_jiffies = jiffies;  // ADDED
} else {
e1000_receive_skb(adapter, netdev, skb, staterr,
  rx_desc->wb.upper.vlan);
@@ -7141,7 +7144,8 @@
if (jiffies - adapter->ec_watchdog_jiffies >= 2 * HZ) {
struct e1000_hw *hw = >hw;
hw->mac.get_link_status = true;
-   e1000_watchdog((unsigned long) adapter);
+// e1000_watchdog((unsigned long) adapter);
+   e1000_watchdog_task(>watchdog_task); // REPLACED
adapter->ec_watchdog_jiffies = jiffies;
}

--

Please let us know if this fixes the problem on your system also.

regards

  W. Holzke


Am 27.09.2018 um 09:02 schrieb René Reimann:

Hello,

we found out that the problem was in the e1000e driver, which caused the 
System to freeze under RTAI.

My colleague will later provide the code that solved the problem.

Best Regards
René Reimann


On 26.09.2018 09:55, René Reimann wrote:
We tried to use only the e1000e driver for kernel 4.9.80 and no other 
patches. Additionaly we tried the e1000e driver
for kernel 3.18.22 with rtai 5.0. The problem remains the same in both 
cases.


There is no output to the syslog when the system freezes.

On 26.09.2018 02:46, Gavin Lambert wrote:

Email Signature

One of the first things you should try is to triage the patches by 
rolling them back and then adding them one at a time and testing 
until you find which patch appears to introduce the problem (or 
whether it exists in the baseline without any patches).  In most 
cases you can then try skipping that patch and applying subsequent 
ones until you find more problematic patches or you successfully 
apply the remainder.


Please share your findings so that we know where to look for the culprit.

(Also, if it manages to write some information to the syslog before 
freezing then that could be helpful.)


FWIW, I’ve been using PREEMPT_RT kernel 4.9.51 with e1000e for a long 
while without issues.


*From:*René Reimann
*Sent:* Tuesday, 25 September 2018 19:28
*To:* Gianluca Medini ; 
etherlab-users@etherlab.org
*Subject:* Re: [etherlab-users] e1000e driver freeze on kernel 4.9.80 
rtai 5.1


Hello,

we are experiencing the same problem with rtai 5.1 kernel 4.9.80 and 
rtai 5.0 kernel.
The system freezes randomly after several minutes with the e1000e and 
the unofficial patches.

Does somebody have an idea how to fix this?

Best Regards
René Reimann

On 23.09.2018 22:29, Gianluca Medini wrote:

Hi all, I've tested the driver e1000e on rtai 5.1 kernel 4.9.80.

I'm using Gavin Lambert unofficial patches set that includes
patched drivers for 4.9.80.

The system  freezes randomly after some  minutes.

The Igb driver on same configuration works perfectly.

Someone have experienced the same issue?

GM




___

Re: [etherlab-users] e1000e driver freeze on kernel 4.9.80 rtai 5.1

2018-09-27 Thread René Reimann


Hello,

we found out that the problem was in the e1000e driver, which caused the 
System to freeze under RTAI.

My colleague will later provide the code that solved the problem.

Best Regards
René Reimann


On 26.09.2018 09:55, René Reimann wrote:
We tried to use only the e1000e driver for kernel 4.9.80 and no other 
patches. Additionaly we tried the e1000e driver
for kernel 3.18.22 with rtai 5.0. The problem remains the same in both 
cases.


There is no output to the syslog when the system freezes.

On 26.09.2018 02:46, Gavin Lambert wrote:

Email Signature

One of the first things you should try is to triage the patches by 
rolling them back and then adding them one at a time and testing 
until you find which patch appears to introduce the problem (or 
whether it exists in the baseline without any patches).  In most 
cases you can then try skipping that patch and applying subsequent 
ones until you find more problematic patches or you successfully 
apply the remainder.


Please share your findings so that we know where to look for the culprit.

(Also, if it manages to write some information to the syslog before 
freezing then that could be helpful.)


FWIW, I’ve been using PREEMPT_RT kernel 4.9.51 with e1000e for a long 
while without issues.


*From:*René Reimann
*Sent:* Tuesday, 25 September 2018 19:28
*To:* Gianluca Medini ; 
etherlab-users@etherlab.org
*Subject:* Re: [etherlab-users] e1000e driver freeze on kernel 4.9.80 
rtai 5.1


Hello,

we are experiencing the same problem with rtai 5.1 kernel 4.9.80 and 
rtai 5.0 kernel.
The system freezes randomly after several minutes with the e1000e and 
the unofficial patches.

Does somebody have an idea how to fix this?

Best Regards
René Reimann

On 23.09.2018 22:29, Gianluca Medini wrote:

Hi all, I've tested the driver e1000e on rtai 5.1 kernel 4.9.80.

I'm using Gavin Lambert unofficial patches set that includes
patched drivers for 4.9.80.

The system  freezes randomly after some  minutes.

The Igb driver on same configuration works perfectly.

Someone have experienced the same issue?

GM




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Research Assistent

IALB - Institut for electrical drives, power electronics and devices
Otto-Hahn-Allee 1
28359 Bremen
Raum: S1390
Tel.: +49 421 218 62699
Fax: +49 421 218 98 62699
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Bauelemente

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Re: [etherlab-users] e1000e driver freeze on kernel 4.9.80 rtai 5.1

2018-09-26 Thread René Reimann

We tried to use only the e1000e driver for kernel 4.9.80 and no other 
patches. Additionaly we tried the e1000e driver
for kernel 3.18.22 with rtai 5.0. The problem remains the same in both 
cases.


There is no output to the syslog when the system freezes.

On 26.09.2018 02:46, Gavin Lambert wrote:

Email Signature

One of the first things you should try is to triage the patches by 
rolling them back and then adding them one at a time and testing until 
you find which patch appears to introduce the problem (or whether it 
exists in the baseline without any patches).  In most cases you can 
then try skipping that patch and applying subsequent ones until you 
find more problematic patches or you successfully apply the remainder.


Please share your findings so that we know where to look for the culprit.

(Also, if it manages to write some information to the syslog before 
freezing then that could be helpful.)


FWIW, I’ve been using PREEMPT_RT kernel 4.9.51 with e1000e for a long 
while without issues.


*From:*René Reimann
*Sent:* Tuesday, 25 September 2018 19:28
*To:* Gianluca Medini ; 
etherlab-users@etherlab.org
*Subject:* Re: [etherlab-users] e1000e driver freeze on kernel 4.9.80 
rtai 5.1


Hello,

we are experiencing the same problem with rtai 5.1 kernel 4.9.80 and 
rtai 5.0 kernel.
The system freezes randomly after several minutes with the e1000e and 
the unofficial patches.

Does somebody have an idea how to fix this?

Best Regards
René Reimann

On 23.09.2018 22:29, Gianluca Medini wrote:

Hi all, I've tested the driver e1000e on rtai 5.1 kernel 4.9.80.

I'm using Gavin Lambert unofficial patches set that includes
patched drivers for 4.9.80.

The system  freezes randomly after some  minutes.

The Igb driver on same configuration works perfectly.

Someone have experienced the same issue?

GM




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Research Assistent

IALB - Institut for electrical drives, power electronics and devices
Otto-Hahn-Allee 1
28359 Bremen
Raum: S1390
Tel.: +49 421 218 62699
Fax: +49 421 218 98 62699
E-Mail: rreim...@ialb.uni-bremen.de <mailto:rreim...@ialb.uni-bremen.de>

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Raum: S1390
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Re: [etherlab-users] e1000e driver freeze on kernel 4.9.80 rtai 5.1

2018-09-25 Thread Gavin Lambert

One of the first things you should try is to triage the patches by rolling them 
back and then adding them one at a time and testing until you find which patch 
appears to introduce the problem (or whether it exists in the baseline without 
any patches).  In most cases you can then try skipping that patch and applying 
subsequent ones until you find more problematic patches or you successfully 
apply the remainder.

Please share your findings so that we know where to look for the culprit.

(Also, if it manages to write some information to the syslog before freezing 
then that could be helpful.)

FWIW, I’ve been using PREEMPT_RT kernel 4.9.51 with e1000e for a long while 
without issues.

From: René Reimann
Sent: Tuesday, 25 September 2018 19:28
To: Gianluca Medini ; etherlab-users@etherlab.org
Subject: Re: [etherlab-users] e1000e driver freeze on kernel 4.9.80 rtai 5.1

Hello,

we are experiencing the same problem with rtai 5.1 kernel 4.9.80 and rtai 5.0 
kernel.
The system freezes randomly after several minutes with the e1000e and the 
unofficial patches.
Does somebody have an idea how to fix this?

Best Regards
René Reimann
On 23.09.2018 22:29, Gianluca Medini wrote:
Hi all, I've tested the driver e1000e on rtai 5.1 kernel 4.9.80.
I'm using Gavin Lambert unofficial patches set that includes patched drivers 
for 4.9.80.
The system  freezes randomly after some  minutes.
The Igb driver on same configuration works perfectly.

Someone have experienced the same issue?
GM




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René Reimann
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IALB - Institut for electrical drives, power electronics and devices
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Re: [etherlab-users] e1000e driver freeze on kernel 4.9.80 rtai 5.1

2018-09-25 Thread René Reimann


Hello,

we are experiencing the same problem with rtai 5.1 kernel 4.9.80 and 
rtai 5.0 kernel.
The system freezes randomly after several minutes with the e1000e and 
the unofficial patches.

Does somebody have an idea how to fix this?

Best Regards
René Reimann

On 23.09.2018 22:29, Gianluca Medini wrote:

Hi all, I've tested the driver e1000e on rtai 5.1 kernel 4.9.80.
I'm using Gavin Lambert unofficial patches set that includes patched 
drivers for 4.9.80.

The system  freezes randomly after some minutes.
The Igb driver on same configuration works perfectly.

Someone have experienced the same issue?
GM


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Email Signature
Logo 
René Reimann
Research Assistent
IALB - Institut for electrical drives, power electronics and devices
Otto-Hahn-Allee 1
28359 Bremen
Raum: S1390
Tel.: +49 421 218 62699
Fax: +49 421 218 98 62699
E-Mail: rreim...@ialb.uni-bremen.de 

www.ialb.uni-bremen.de 



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[etherlab-users] e1000e driver freeze on kernel 4.9.80 rtai 5.1

2018-09-23 Thread Gianluca Medini

Hi all, I've tested the driver e1000e on rtai 5.1 kernel 4.9.80.
I'm using Gavin Lambert unofficial patches set that includes patched
drivers for 4.9.80.
The system  freezes randomly after some  minutes.
The Igb driver on same configuration works perfectly.

Someone have experienced the same issue?
GM
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Re: [etherlab-users] e1000e driver freeze on kernel 4.9.80 rtai 5.1

Re: [etherlab-users] e1000e driver freeze on kernel 4.9.80 rtai 5.1

Re: [etherlab-users] e1000e driver freeze on kernel 4.9.80 rtai 5.1

Re: [etherlab-users] e1000e driver freeze on kernel 4.9.80 rtai 5.1

Re: [etherlab-users] e1000e driver freeze on kernel 4.9.80 rtai 5.1

Re: [etherlab-users] e1000e driver freeze on kernel 4.9.80 rtai 5.1

[etherlab-users] e1000e driver freeze on kernel 4.9.80 rtai 5.1

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