LTSP boot fails, missing -stable patch "net: avoid dependency of net_get_random_once on nop patching"
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Medium
|
Unassigned | ||
Trusty |
Fix Released
|
Medium
|
Tim Gardner | ||
Utopic |
Fix Released
|
Medium
|
Unassigned |
Bug Description
The patch
net: switch net_secret key generation to net_get_random_once
https:/
introduced a regression into kernel 3.13 that makes the kernel's nbd client always use the same source port number (on some hardware). This means that the second and subsequent boots for an LTSP client fail because the sourceip / sourceport pair on the nbd server is still occupied by the old nbd connection.
The patch
net: avoid dependency of net_get_random_once on nop patching
https:/
should fix the issue and also went into -stable:
http://
https:/
There are three independent reports on ltsp-discuss for this issue and the original analysis was posted here: https://<email address hidden>
The issue can NOT be reproduced in VirtualBox and may be limited to certain hardware - other users report they see no problems with 3.13. However, as this is a -stable patch it should be applied anyway.
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
Changed in linux (Ubuntu Trusty): | |
assignee: | nobody → Tim Gardner (timg-tpi) |
status: | New → In Progress |
Changed in linux (Ubuntu Utopic): | |
status: | Confirmed → Fix Released |
Changed in linux (Ubuntu Trusty): | |
status: | In Progress → Fix Committed |
Changed in linux (Ubuntu Trusty): | |
importance: | Undecided → Medium |
Changed in linux (Ubuntu Utopic): | |
importance: | Undecided → Medium |
tags: | added: kernel-fixed-upstream trusty utopic |
This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification- needed- trusty' to 'verification- done-trusty' .
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.
See https:/ /wiki.ubuntu. com/Testing/ EnableProposed for documentation how to enable and use -proposed. Thank you!