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 <da...@debian.org> Wed, 07 Apr 2021 16:32:38 -0600
** Changed in: makedumpfile (Ubuntu Hirsute)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1921403
Title:
makedumpfile does not create dmesg file in /var/crash on 5.10+ kernels
Status in makedumpfile package in Ubuntu:
Fix Released
Status in makedumpfile source package in Hirsute:
Fix Released
Status in makedumpfile package in Debian:
Fix Released
Bug description:
makedumpfile does not create the dmesg.<timestamp> in /var/crash.
This happens only on 5.10+ kernel because 5.10 kernel introduces a new
lockless ringbuffer.
This issue has been addressed upstream with commits :
[1] c617ec633392([PATCH 1/2] printk: add support for lockless ringbuffer)
[2] 44b073b7ec46([PATCH 2/2] printk: use committed/finalized state values)
[1]
https://github.com/makedumpfile/makedumpfile/commit/c617ec63339222f3a44d73e36677a9acc8954ccd
[2]
https://github.com/makedumpfile/makedumpfile/commit/44b073b7ec467aee0d7de381d455b8ace1199184
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