I failed to mention that I also had linux-image-extra-3.19.0-26-generic
and linux-headers-3.19.0-26 from vivid-proposed, but it is probably not
relevant:
$ uname -r
3.19.0-26-generic
$ apt-cache policy linux-image-extra-3.19.0-26
linux-image-extra-3.19.0-26-generic:
Installed: 3.19.0-26.27
Candidate: 3.19.0-26.27
Version table:
*** 3.19.0-26.27 0
400 http://us.archive.ubuntu.com/ubuntu/ vivid-proposed/main amd64
Packages
100 /var/lib/dpkg/status
$ apt-cache policy linux-image-3.19.0-26
linux-image-3.19.0-26-lowlatency:
Installed: (none)
Candidate: 3.19.0-26.27
Version table:
3.19.0-26.27 0
400 http://us.archive.ubuntu.com/ubuntu/ vivid-proposed/main amd64
Packages
linux-image-3.19.0-26-generic:
Installed: 3.19.0-26.27
Candidate: 3.19.0-26.27
Version table:
*** 3.19.0-26.27 0
400 http://us.archive.ubuntu.com/ubuntu/ vivid-proposed/main amd64
Packages
100 /var/lib/dpkg/status
$ apt-cache policy linux-headers-3.19.0-26
linux-headers-3.19.0-26:
Installed: 3.19.0-26.27
Candidate: 3.19.0-26.27
Version table:
*** 3.19.0-26.27 0
400 http://us.archive.ubuntu.com/ubuntu/ vivid-proposed/main amd64
Packages
100 /var/lib/dpkg/status
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1475434
Title:
ipvlan module causes kernel crashes (backport fixes from upstream)
Status in linux package in Ubuntu:
Invalid
Status in linux-lts-vivid package in Ubuntu:
Invalid
Status in linux-lts-vivid source package in Trusty:
Triaged
Status in linux source package in Vivid:
Fix Committed
Bug description:
SRU Justification:
[Impact]
ipvlan is currently unusable as removing an interface with an IP
address attached will cause a kernel crash.
[Test Case]
As reported in this bug, doing the following will result in a kernel
crash:
ip netns add ns0
ip link add link eth0 ipvl0 type ipvlan mode L3
ip link set dev ipvl0 netns ns0
ip netns exec ns0 bash
ip link set dev ipvl0 up
ip -4 addr add 192.168.0.10/24 dev ipvl0
ip link del dev ipvl0
[Fix]
commit 27705f7085ce2e124fac4c280ce824962cc90bb6
Author: Jiri Benc <jb...@redhat.com>
Date: Sat Mar 28 19:13:22 2015 +0100
ipvlan: fix addr hash list corruption
--
Kernel version 3.19, currently being used as the vivid LTS kernel,
includes support for ipvlan. But at its current state it is unusable
as simply removing an interface with an ip address attached will cause
a kernel crash. The fix is already upstream:
https://github.com/torvalds/linux/commit/27705f7085ce2e124fac4c280ce824962cc90bb6
Reproducing this is easy (requires a recent version of iproute2, with
support for ipvlan, such as the one in debian/experimental):
ip netns add ns0
ip link add link eth0 ipvl0 type ipvlan mode L3
ip link set dev ipvl0 netns ns0
ip netns exec ns0 bash
ip link set dev ipvl0 up
ip -4 addr add 192.168.0.10/24 dev ipvl0
ip link del dev ipvl0
The last line will cause a kernel crash, with a calltrace that looks
like this:
https://gist.github.com/fabiokung/b360cb2f3bdf2fb36c8b
Can we get the fixes backported to the 3.19 LTS kernel from vivid?
Ideally we would like to have the whole patchset backported:
https://github.com/torvalds/linux/commit/d91e9015c78af1dc1f8ac4fdcf6118dbc2401668
and
https://github.com/torvalds/linux/commit/8172ba51e257fdd353010cd7caaa37c8bc9eb44a
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1475434/+subscriptions
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