Bug 233895 - 12.0-RC2: Repeated double fault on AWS r4.large
Summary: 12.0-RC2: Repeated double fault on AWS r4.large
Status: New
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: 12.0-RELEASE
Hardware: amd64 Any
: --- Affects Many People
Assignee: freebsd-virtualization mailing list
URL:
Keywords: regression
Depends on:
Blocks:
 
Reported: 2018-12-09 19:13 UTC by Leif Pedersen
Modified: 2019-01-09 16:08 UTC (History)
0 users

See Also:


Attachments
Screenshot of panic. (563.01 KB, image/jpeg)
2018-12-09 19:13 UTC, Leif Pedersen
no flags Details
Panic message (520.18 KB, image/jpeg)
2018-12-22 05:54 UTC, Leif Pedersen
no flags Details

Note You need to log in before you can comment on or make changes to this bug.
Description Leif Pedersen 2018-12-09 19:13:34 UTC
Created attachment 199989 [details]
Screenshot of panic.

I'm testing 12.0-RC2 on AWS, and getting double-fault panics. We've observed it at least 3 times, with a stop/start between each, and on two hosts (the only hosts we have on 12). A stop/start should move it to new host hardware, eliminating the plausibility of bad hardware. The last release that has been stable for us is 11.1. (11.2 did not work on AWS due to the crash bug in ena.) This happens on an r4.large instance (r4.large is large enough to use the ena NIC driver rather than xn, fwiw).

Screenshot from AWS attached.
Comment 1 Leif Pedersen 2018-12-22 05:54:20 UTC
Created attachment 200351 [details]
Panic message
Comment 2 Leif Pedersen 2018-12-22 05:58:10 UTC
This problem persists in 12.0-RELEASE.

Often upon rebooting after a panic, it will panic again when rc has barely begun. See new screen shot.
Comment 3 Leif Pedersen 2018-12-22 05:58:10 UTC
This problem persists in 12.0-RELEASE.

Often upon rebooting after a panic, it will panic again when rc has barely begun. See new screen shot.