This bug is the same as #1745349 and is not solved with 4.4.0-116 but
can be prevented with the noipbp kernel option.
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https://bugs.launchpad.net/bugs/1748505
Title:
Boot failed with ha
If i remember correct then from 4.15 the retpoline fixes are used for
spectre mitigation so the noibpb code is not used.
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https://bugs.launchpad.net/bugs/1745349
Title:
Hard lockup duri
I can prevent the issue by addning the "noibpb" boot parameter to my
kernel arguments.
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https://bugs.launchpad.net/bugs/1745349
Title:
Hard lockup during boot with linux-image-4.4.0-112
Could it be the same issue as #1745349? It looks like it is the Spectre fix
that causes the issue.
The problem goes away for me on the 4.4.0-112 kernel with the "noibpb" kernel
argument on boot.
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I have similar issues on my DELL R630 server but only on those with
extra NIC:s.
In my case it is not triggerd on boot but when I start the openstack
neutron agents components that starts configuring the extra nic (Intel
10-Gigabit X540-AT2 rev 01).
[ 204.789174] NMI watchdog: Watchdog detected
