During every recent upgrade of a kernel with dnf on both F38 and F39 I see this message
Running scriptlet: kernel-core-6.5.7-300.fc39.x86_64 180/180 grep: warning: stray \ before / kdump: For kernel=/boot/vmlinuz-6.5.7-300.fc39.x86_64, crashkernel=1G-4G:192M,4G-64G:256M,64G-:512M now. Please reboot the system for the change to take effet. Note if you don't want kexec-tools to manage the crashkernel kernel parameter, please set auto_reset_crashkernel=no in /etc/kdump.conf.
It would seem that there is an error in the packaging, probably within the post-install scriptlet, and it seems related to the newer crashkernel attributes.
I know I have begun seeing this with the 6.5.X kernels.
Does anyone else see a similar message?