makedumpfile does not create dmesg file in /var/crash on 5.10+ kernels

This bug was fixed in the package makedumpfile - 1:1.6.8-4

---------------
makedumpfile (1:1.6.8-4) unstable; urgency=medium

  [ Ioanna Alifieraki ]
  * Fix failure of dmesg.<timestamp> creation on 5.10+ kernels.
    (Closes: #985896) (LP: #1921403).
  * Fix makedumpfile failure on arm64 with 5.4 kernels.
    (Closes: #986594) (LP: #1879214)

 -- dann frazier <email address hidden> Wed, 07 Apr 2021 16:32:38 -0600

@ioanna,

Does it maintain compatibility for release that could have both <= and >= 5.10 available ?

Hi Eric,

Answering this as I'm working on it now. :)

Yes, this has been considered and tested by Jo
in the other bug 1942784 comment 7.

Thanks for your attention to the bug/compatibility matrix.

Reviewed and uploaded to Focal. Thanks @joalif!
(debdiff in bug 1942784)

Hello Ioanna, or anyone else affected,

Accepted makedumpfile into focal-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/makedumpfile/1:1.6.7-1ubuntu2.3 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-focal to verification-done-focal. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-focal. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

VERIFICATION FOCAL

Installed makedumpfile from proposed.
Testing on a Focal machine running 5.11 kernel.

# uname -rv
5.11.0-40-generic #44~20.04.1-Ubuntu SMP Wed Oct 20 19:04:34 UTC 2021

Trigger crash:
# echo 1 > /proc/sys/kernel/sysrq
# echo c > /proc/sysrq-trigger

After reboot contents of /var/crash :
/var/crash/202110271414# ls
dmesg.202110271414 dump.202110271414

dmesg file has been successfully created.

This bug was fixed in the package makedumpfile - 1:1.6.7-1ubuntu2.3

---------------
makedumpfile (1:1.6.7-1ubuntu2.3) focal; urgency=medium

  * makedumpfile falls back to cp with the 5.11 kernel (LP: #1942784)
    -d/p/0008-PATCH-Retrieve-MAX_PHYSMEM_BITS-from-vmcoreinfo.patch
  * makedumpfile doesn't create dmesg file on 5.10+ kernels (LP: #1921403)
    -d/p/0009-PATCH-1-2-printk-add-support-for-lockless-ringbuffer.patch
    -d/p/0010-PATCH-2-2-printk-use-committed-finalized-state-value.patch

 -- Ioanna Alifieraki <email address hidden> Mon, 18 Oct 2021 16:43:56 +0000

The verification of the Stable Release Update for makedumpfile has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.