Public bug reported:
This upstream patch needs to be backported:
bde5baa5476c gre: raising the size of the buffer holding nl messages.
https://git.kernel.org/cgit/linux/kernel/git/shemminger/iproute2.git/commit/?id=bde5baa5476c
Example:
root@ubuntu1404:~# ip link add dummy1 type dummy
root@ubuntu1404:~# ip a a 10.200.0.1/24 dev dummy1
root@ubuntu1404:~# ip link add gre2 type gre local 10.200.0.1 remote 10.200.0.2
dev dummy1
root@ubuntu1404:~# ip link set gre2 type gre ttl 32
addattr_l ERROR: message exceeded bound of 1024
addattr_l ERROR: message exceeded bound of 1024
addattr_l ERROR: message exceeded bound of 1024
addattr_l ERROR: message exceeded bound of 1024
addattr_l ERROR: message exceeded bound of 1024
addattr_l ERROR: message exceeded bound of 1024
addattr_l ERROR: message exceeded bound of 1024
addattr_l ERROR: message exceeded bound of 1024
addattr_l ERROR: message exceeded bound of 1024
*** stack smashing detected ***: ip terminated
Aborted
root@ubuntu1404:~# uname -a
Linux ubuntu1404 3.13.0-66-generic #108-Ubuntu SMP Wed Oct 7 15:20:27 UTC 2015
x86_64 x86_64 x86_64 GNU/Linux
root@ubuntu1404:~# ip -V
ip utility, iproute2-ss131122
root@ubuntu1404:~#
** Affects: iproute2 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1522371
Title:
iproute2: seg fault with 'ip link type gre ...' commands
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