As of 5.8.0-40-generic (and possibly the previous version as well) this
issue seems to be 100% resolved for me.
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https://bugs.launchpad.net/bugs/1904054
Title:
kernel 5.8
Just tried the newly released 5.8.0-31-generic, but I'm still seeing the
GPFs (see attached screenshot).
I'm continuing to run with the mainline 5.9.10 kernel that I mentioned
previously, not ideal since I had to switch to the upstream openzfs-2.0
release which supports the 5.9 kernel.
**
Interestingly 5.9.10-050910-generic (from the mainline kernel ppa that
was mentioned earlier) is booting and running stably.
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Title:
Anything else I can try to further debug this issue?
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Title:
kernel 5.8 general protection fault at boot
Status in linux package
Tried the recently released ubuntu linux kernel 5.8.29 just now, still
getting the GPFs. Attaching the output of "journalctl -xb" from that
failed boot (I was dropped into "emergency mode").
** Attachment added: "journalctl -xb output from failed boot of ubuntu kernel
5.8.0-29"
OK, after a lot of kernel package installs and rebooting...
Mainline kernel version 5.8.5-050805 boots and runs successfully.
But the *next* version (5.8.6-050806) generally fails to boot,
exhibiting the pattern of GPFs and occasional kernel panics. Once it
booted up all the way, but the system
Mainline kernel version 5.8.0-050800-generic boots up without any
issues.
Mainline kernel version *5.8.18-050818-generic* doesn't (GPF and kernel
panics).
I'll work backwards from 5.8.18-050818-generic to see when the GPFs and
kernel panics go away.
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I updated GRUB_CMDLINE_LINUX_DEFAULT. I was able to boot to multiuser
mode once (kernel boot log for that is attached, titled "kern.log.debug-
successful"). The system locked up shortly after I stashed a copy of
that log.
** Attachment added: "Successful boot of 5.8.0-28-generic (which
Subsequent attempts to boot the 5.8.0-28-generic kernel exhibited GPFs
and at least one full kernel panic, screenshot of that is attached.
Ubuntu kernel version 5.4.0-52-generic remains the only stable option at
the moment.
** Attachment added: "kernel panic with 5.8.0-28-generic"
Ah, according to the openzfs release notes, openzfs version 0.8.4 (the
current version in the ubuntu repositories) isn't compatible with kernel
versions later than 5.6. Presumably this is the issue. I guess I'll
stick with kernel 5.4.x until update ZFS packages are released.
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I was able to successfully boot with upstream kernel version:
5.10.0-051000rc3-generic
This kernel package notably does not include the ZFS kernel modules (and
those kernel modules did not build when I installed zfs-dkms). So it
does seem possible that the bug I'm encountering relates to ubuntu
Public bug reported:
Ubuntu kernel version 5.8.0-28 (as well as the previous 5.8.0-26)
crashes at boot with many general protection faults, on my Intel NUC 10.
Ubuntu kernel version 5.4.0-52 did not exhibit this problem.
ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package:
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