Public bug reported:
Overnight I had 2 of 12 16.04 servers brick with the 108 kernel. They
also do not work with 109. They work fine with 104. The other 10 worked
fine on both 108 and 109.
All are hosted on VMWARE. The two broken ones stop at the same place. I
was able to go back to the 104 kernel to get them working and pin the
kernel version.
Just for fun, I set zswap.enabled=0 and they both crashed with kthread
starved for jiffies. They are both multi-processor with lots of ram and
disk.
I have a task from the Ubuntu Kernel team to try this with 'nopti'. I'll
report back.
** Affects: linux (Ubuntu)
Importance: High
Status: Triaged
** Affects: linux (Ubuntu Xenial)
Importance: High
Status: Triaged
** Tags: pti
** Attachment added: "vmware console"
https://bugs.launchpad.net/bugs/1742502/+attachment/5034568/+files/stuckkernel.png
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https://bugs.launchpad.net/bugs/1742502
Title:
108 and 109 kernel hangs
Status in linux package in Ubuntu:
Triaged
Status in linux source package in Xenial:
Triaged
Bug description:
Overnight I had 2 of 12 16.04 servers brick with the 108 kernel. They
also do not work with 109. They work fine with 104. The other 10
worked fine on both 108 and 109.
All are hosted on VMWARE. The two broken ones stop at the same place.
I was able to go back to the 104 kernel to get them working and pin
the kernel version.
Just for fun, I set zswap.enabled=0 and they both crashed with kthread
starved for jiffies. They are both multi-processor with lots of ram
and disk.
I have a task from the Ubuntu Kernel team to try this with 'nopti'.
I'll report back.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1742502/+subscriptions
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