I have /dev/sda1 mounted as /boot and /dev/sda2 is mounted as /. /dev/sda1 has the kernel 5.4.100-1-MANJARO however the boot folder on /dev/sda2 had kernel 5.4.18-1-MANJARO. System was booting from /dev/sda2's boot folder instead of the boot partition I had /dev/sda1 mounted as /boot. This could have happened due to some configuration issue during dual boot setup with Linux Mint. I removed mount for /dev/sda1 from /etc/fstab and copied all the files from /dev/sda1 to /dev/sda2's boot folder, updated grub and reboot, this fixed the issue.