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Event: ELISA Safety Architecture WG - Extra Meeting on May 17 - Tuesday, May 17, 2022 #cal-invite

safety-architecture@lists.elisa.tech Calendar <noreply@...>
 

ELISA Safety Architecture WG - Extra Meeting on May 17

When:
Tuesday, May 17, 2022
2:00pm to 3:00pm
(UTC+02:00) Europe/Berlin

Where:
https://zoom.us/j/95775114472?pwd=VDFzTjRjNW8yd3ZOQWVLS1ZpWFlEUT09

View Event

Description:
──────────

ELISA Project is inviting you to a scheduled Zoom meeting.

Join Zoom Meeting
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Meeting ID: 957 7511 4472
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extra WG meeting on Tue 17

Gabriele Paoloni
 

Hi Min

Today we had a lot of material to go over and in the WG we decided to have an extra meeting next week at the same time.

Could you please schedule an extra session?

Thanks
Gab


May 10th Agenga

Gabriele Paoloni
 

Hi All

For today I have the following topics:
a) Feedback from Mobileye on the calltree tool: should we wait for ME to continue with pull request or should the WG take over?
b) Review of the github pull request from Francisco
c) Analsys of the LFSCS WG material here against the Telltale use case. I.e. which sections are relevant in the context of the telltale use case

Thanks
Gab


Event: ELISA Safety-Architecture Weekly Meeting - 05/10/2022 #cal-reminder

safety-architecture@lists.elisa.tech Calendar <noreply@...>
 

Reminder: ELISA Safety-Architecture Weekly Meeting

When:
05/10/2022
12:00pm to 1:00pm
(UTC+00:00) UTC

Where:
https://zoom.us/j/95775114472?pwd=VDFzTjRjNW8yd3ZOQWVLS1ZpWFlEUT09

Organizer: myu@... myu@...

View Event

Description:
──────────

ELISA Project is inviting you to a scheduled Zoom meeting.

Join Zoom Meeting
https://zoom.us/j/95775114472?pwd=VDFzTjRjNW8yd3ZOQWVLS1ZpWFlEUT09

Meeting ID: 957 7511 4472
Passcode: 289297
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Re: cancelling today's meeting

Zhang HaiPeng 张海鹏-SW
 

Hi Gab,

 

Fine for me to skip today’s meeting.

By the way, I sent to you a message with some remarks / questions (probably also got posted in the work group forum) about the presentation you and Daniel made during the last workshop.

It would be good if you would check and see if you would have any comments. Thanks.

 

Best regards,

ZHANG Haipeng

发件人: safety-architecture@... [mailto:safety-architecture@...] 代表 Gabriele Paoloni
发送时间: 2022426 17:04
收件人: safety-architecture@...
主题: [ELISA Safety Architecture WG] cancelling today's meeting

 

Hi All

 

I am just back from an 11days break. So I have no updates on the Safety Arch WG side and I have not seen any post on the mailing list. Hence I'd like to cancel today's meeting unless you guys have topics to discuss.

 

Thanks

Gab

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cancelling today's meeting

Gabriele Paoloni
 

Hi All

I am just back from an 11days break. So I have no updates on the Safety Arch WG side and I have not seen any post on the mailing list. Hence I'd like to cancel today's meeting unless you guys have topics to discuss.

Thanks
Gab


Event: ELISA Safety-Architecture Weekly Meeting - 04/26/2022 #cal-reminder

safety-architecture@lists.elisa.tech Calendar <noreply@...>
 

Reminder: ELISA Safety-Architecture Weekly Meeting

When:
04/26/2022
12:00pm to 1:00pm
(UTC+00:00) UTC

Where:
https://zoom.us/j/95775114472?pwd=VDFzTjRjNW8yd3ZOQWVLS1ZpWFlEUT09

Organizer: myu@... myu@...

View Event

Description:
──────────

ELISA Project is inviting you to a scheduled Zoom meeting.

Join Zoom Meeting
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Meeting ID: 957 7511 4472
Passcode: 289297
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Re: Wrong Meeting Time in the ELISA calendar

Min Yu
 

Just updated as soon as I got this note.
--
Min Yu
Program Manager
The Linux Foundation
+1(530) 902-6464 (m)



On Tue, Apr 12, 2022 at 7:11 AM Gabriele Paoloni <gpaoloni@...> wrote:
Hi Min

We just started in the ELISA Arch WG and we got very low attendance. So we realized that the meeting time in the ELISA calendar is wrong (same issue LFSCS WG meeting)

Can you please fix it asap (it should be 12pm to 1pm UTC)?

Thanks
Gab


Updated Event: ELISA Safety-Architecture Weekly Meeting #cal-invite

safety-architecture@lists.elisa.tech Calendar <noreply@...>
 

ELISA Safety-Architecture Weekly Meeting

When:
Tuesday, April 12, 2022
12:00pm to 1:00pm
(UTC+00:00) UTC
Repeats: Every 2 weeks on Tuesday

Where:
https://zoom.us/j/95775114472?pwd=VDFzTjRjNW8yd3ZOQWVLS1ZpWFlEUT09

Organizer: myu@... myu@...

View Event

Description:
──────────

ELISA Project is inviting you to a scheduled Zoom meeting.

Join Zoom Meeting
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Meeting ID: 957 7511 4472
Passcode: 289297
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Find your local number: https://zoom.us/u/aQIrrAQlD


Wrong Meeting Time in the ELISA calendar

Gabriele Paoloni
 

Hi Min

We just started in the ELISA Arch WG and we got very low attendance. So we realized that the meeting time in the ELISA calendar is wrong (same issue LFSCS WG meeting)

Can you please fix it asap (it should be 12pm to 1pm UTC)?

Thanks
Gab


ww15 Agenda

Gabriele Paoloni
 

Hi All

Sorry for the late agenda. Today I would like to cover the following topic
- WG Content Coordinator Role
- Gab planned holidays
- "Safe Process Context Protection" in KSR_002: contribution to the telltale use case and where to move the material
- WG Short Term goals (following the ELISA workshop)

Thanks
Gab


Event: ELISA Safety-Architecture Weekly Meeting - 04/12/2022 #cal-reminder

safety-architecture@lists.elisa.tech Calendar <noreply@...>
 

Reminder: ELISA Safety-Architecture Weekly Meeting

When:
04/12/2022
1:00pm to 2:00pm
(UTC+00:00) UTC

Where:
https://zoom.us/j/95775114472?pwd=VDFzTjRjNW8yd3ZOQWVLS1ZpWFlEUT09

Organizer: myu@... myu@...

View Event

Description:
──────────

ELISA Project is inviting you to a scheduled Zoom meeting.

Join Zoom Meeting
https://zoom.us/j/95775114472?pwd=VDFzTjRjNW8yd3ZOQWVLS1ZpWFlEUT09

Meeting ID: 957 7511 4472
Passcode: 289297
One tap mobile
+16465588656,,95775114472#,,,,,,0#,,289297# US (New York)
+13017158592,,95775114472#,,,,,,0#,,289297# US (Germantown)

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+1 346 248 7799 US (Houston)
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+1 647 374 4685 Canada
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Meeting ID: 957 7511 4472
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Find your local number: https://zoom.us/u/aQIrrAQlD


Some questions about the talk of "Safety monitor inside the kernel"

Zhang HaiPeng 张海鹏-SW
 

Dear Gab, Daniel,

 

The presentation in the ELISA workshop was interesting and informative. Thanks again for that.

Some more questions are attached below for my clarity and to see if it helps for the further evolution towards a more general-purpose design.

 

The Requirements Decomposition:

1. Here, I have the impression that the top level safety requirements look a bit broader than the requirements specially for the kernel (e.g.: for the 1st requirement, to my understanding, the programming of the watchdog timeout is initiated by the safety application). By introducing the approach of having the monitor in the kernel to relax some kernel modules from having to be safety compliant, I think we expected that the safety requirement decomposition would happen within the scope of kernel. If that is the case, I think the requirement decomposition should probably be performed based on some safety requirements at the kernel level (effectively concerning the VFS / Watchdog Driver / etc. as a whole), and it may possibly be worded like “The kernel (modules) shall ensure the watchdog control to follow the requests from the safety application” or something like that, which is to eliminate the specifics which are actually executed by the application.

 

2. For the decomposed requirements on the right side, I would wish the correctness of the watchdog timeout setting to be part of the monitoring, because that is part of the intended function of the related kernel modules and can otherwise cause a safety problem if violated. And that may drive my next question (which might be touched a little bit during the workshop presentation) which is how can the proposed RVM based monitoring be scaled / extended to support the monitoring of numerical characteristics of the kernel in addition to the finite enumerative states. The watchdog timeout setting (as one straight forward numerical characteristic) is naturally less dynamic, but how feasible (most difficult aspect might be to model such complicated kernel behavior in the formal notations with respect to lots of factors which have influences over that numerical kernel behavior, and especially the concern of integrity of those influencing factors as the inputs of the in-kernel monitor) is it to scale / extend the RVM to cover the rest of the kernel (as far as used in the typical safety critical applications) in terms of numerical characteristics if the kernel would possibly exhibit and have safety implications?

 

High Level Failure Mode Analysis / Failure Mode 1 – Failure in the VFS

About the fault detection measure, the safety application retrieves an internal state of the in-kernel monitor which appears that the safety application acts partially as the monitor of the in-kernel monitor (typically in case of kernel error), which is probably supportive in this case because maybe no other means are available to ensure the runtime correctness of the RVM, although the RVM itself can be engineered to a high integrity during its construction phase due to the use of formal notations and tools (which can be qualified offline). However, that brings the architecting question which is how feasible could the safety application (not necessarily the one for the Tell-Tale use case, but could be other possible applications) be developed with some level of the knowledge about the in-kernel monitor and the achievable diagnostic coverage of the monitoring at the application level against the in-kernel monitor the complexity of which can be linear to the kernel functions to be monitored.

 

 

Thank you.

 

张海鹏 Zhang Haipeng

)  +86 13817693438

*  zhanghaipeng02@...

基础软件平台 | Basic Software Platform

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Cancelled Event: ELISA Safety-Architecture Weekly Meeting - Tuesday, March 29, 2022 #cal-cancelled

safety-architecture@lists.elisa.tech Calendar <noreply@...>
 

Cancelled: ELISA Safety-Architecture Weekly Meeting

This event has been cancelled.

When:
Tuesday, March 29, 2022
1:00pm to 2:00pm
(UTC+00:00) UTC

Where:
https://zoom.us/j/95775114472?pwd=VDFzTjRjNW8yd3ZOQWVLS1ZpWFlEUT09

Organizer: myu@... myu@...

Description:
──────────

ELISA Project is inviting you to a scheduled Zoom meeting.

Join Zoom Meeting
https://zoom.us/j/95775114472?pwd=VDFzTjRjNW8yd3ZOQWVLS1ZpWFlEUT09

Meeting ID: 957 7511 4472
Passcode: 289297
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Agenda - weekly call, March 29 2022

Elana C
 

Christoffer will be joining us once again, to continue the technical discussion on his document. 

Just to remind you, here is the link to his doc in github   https://github.com/challfre/wg-lfscs/blob/main/address_space_integrity/address_space_integrity.md


Some suggestions, but will be opened to other ideas as well:

  1. Clarify all assumptions, the explicit ones which we discussed already (MMU support by HW architecture, reduced privilege / non-root execution by user space application), as well as any others.   And their implications.
  2. Virtual memory management, boot time vs run time:  what can be expected at each stage, what are the implications for safety.
  3. Kernel configurations, pros and cons of those which he listed + any others

Thanks, Christoffer, and looking forward to a productive discussion tomorrow.

Regards

Elana

 


Cancelling Tomorrow's meeting

Gabriele Paoloni
 

Hi All

Unfortunately this week I am out of office and cannot host the meeting. So I would suggest to cancel the meeting and reconvene after the workshop

Thanks
Gab


Event: ELISA Safety-Architecture Weekly Meeting - 03/29/2022 #cal-reminder

safety-architecture@lists.elisa.tech Calendar <noreply@...>
 

Reminder: ELISA Safety-Architecture Weekly Meeting

When:
03/29/2022
1:00pm to 2:00pm
(UTC+00:00) UTC

Where:
https://zoom.us/j/95775114472?pwd=VDFzTjRjNW8yd3ZOQWVLS1ZpWFlEUT09

Organizer: myu@... myu@...

View Event

Description:
──────────

ELISA Project is inviting you to a scheduled Zoom meeting.

Join Zoom Meeting
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Meeting ID: 957 7511 4472
Passcode: 289297
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Meeting ID: 957 7511 4472
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Find your local number: https://zoom.us/u/aQIrrAQlD


Re: ww12 - Agenda

Gabriele Paoloni
 

Hi All

Just a reminder about the meeting time: it is 2pm CEST

i.e. 2h and 10 minutes from now.

Thanks
Gab

On Mon, Mar 21, 2022 at 7:18 PM Gabriele Paoloni <gpaoloni@...> wrote:
Hi All

Tomorrow we'll discuss the latest addition from Igor to the KSR_002 doc.

Thanks
Gab


ww12 - Agenda

Gabriele Paoloni
 

Hi All

Tomorrow we'll discuss the latest addition from Igor to the KSR_002 doc.

Thanks
Gab


Event: ELISA Safety-Architecture Weekly Meeting - 03/22/2022 #cal-reminder

safety-architecture@lists.elisa.tech Calendar <noreply@...>
 

Reminder: ELISA Safety-Architecture Weekly Meeting

When:
03/22/2022
1:00pm to 2:00pm
(UTC+00:00) UTC

Where:
https://zoom.us/j/95775114472?pwd=VDFzTjRjNW8yd3ZOQWVLS1ZpWFlEUT09

Organizer: myu@... myu@...

View Event

Description:
──────────

ELISA Project is inviting you to a scheduled Zoom meeting.

Join Zoom Meeting
https://zoom.us/j/95775114472?pwd=VDFzTjRjNW8yd3ZOQWVLS1ZpWFlEUT09

Meeting ID: 957 7511 4472
Passcode: 289297
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