This file is indexed.

/etc/logcheck/violations.d/kernel is in logcheck-database 1.3.16.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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^\w{3} [ :0-9]{11} [._[:alnum:]-]+ kernel:( \[ *[[:digit:]]+\.[[:digit:]]+\])? [[:alnum:]]+: media error \(bad sector\): status=0x[[:xdigit:]]+ { DriveReady SeekComplete Error }$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ kernel:( \[ *[[:digit:]]+\.[[:digit:]]+\])? end_request: I/O error, dev [[:alnum:]]+, sector [[:digit:]]+