Greetings!
No luck with 5.4.0-80.90, still getting the same bug as before even on kernel
version 5.4.0-86. Still no clue on how to reproduce it – hypervisor nodes just
randomly crash. I have attached dmesg of the most recent encounter, but it
seems identical to previous ones.
Here is fresh cras
Can you please give 5.4.0-80.90 a try?
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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Title:
cgroups related kernel panic
Hello!
Actually, we got a surprising behavior.
Shortly after communication in this thread, the bug just disappeared, for
nearly two months.
Still had no luck reproducing.
We used this opportunity to migrate and reboot part of our servers to activate
kdump on them, and decided to wait.
A couple
Thank you all for your ideas!
Sure, we do have some modules not from the kernel source tree. These are
Mellanox (our NICs) and OpenvSwitch, as we've had some problems that
were fixed in the newer driver versions.
We don't have apport enabled, and actually, the hypervisor nodes don't even
have di
Can you collect and upload logs per the previous comment? I've googled
around some but nothing jumped out. This will be difficult without a
reproducer.
Have you tried the latest HWE kernel 5.4.0-71.79~18.04.1?
Is there any chance you can enable kdump?
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** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
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Title:
cgroups related kernel panics
To manage notifications about
CPU: 0 PID: 1 Comm: systemd Tainted: G OE 5.4.0-66-generic
#74~18.04.2-Ubuntu
The stand-out info in the log fragments is the kernel is tainted with
GPL (G) unsigned (E) out-of-tree (O) modules:
openvswitch(OE)
mlx5_core(OE)
mlxfw(OE)
mlx4_en(OE)
mlx4_ib(OE)
mlx4_core(OE)
mlx_compat(
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux-hwe-5.4 (Ubuntu)
Status: New => Confirmed
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Title
** Attachment added: "crash-160321.log"
https://bugs.launchpad.net/ubuntu/+source/linux-hwe-5.4/+bug/1921355/+attachment/5480851/+files/crash-160321.log
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** Attachment added: "crash-080321.log"
https://bugs.launchpad.net/ubuntu/+source/linux-hwe-5.4/+bug/1921355/+attachment/5480849/+files/crash-080321.log
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** Attachment added: "crash-110321.log"
https://bugs.launchpad.net/ubuntu/+source/linux-hwe-5.4/+bug/1921355/+attachment/5480850/+files/crash-110321.log
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