Dear Maintainer,

An off-by-one bug in dmesg(1) was introduced upstream[1]. It has been
fixed recently[2]. Please apply the upstream patch.

[1] https://git.kernel.org/pub/scm/utils/util-linux/util-linux.git/commit/?id=efb18899d23d8bbfa56f871c0d1fd44ac6bb838e
[2] https://git.kernel.org/pub/scm/utils/util-linux/util-linux.git/commit/?id=01a424f502cf87f4cbd1c88bb10714b9f87154d4