kexec not working

When I am doing normal load of kernel using kexec, it works. #kexec -l /boot/vmlinuz-4.3.0-crash+ --initrd=/boot/initramfs-4.3.0-crash+.img --append="root=/dev/mapper/fedora-root 1 irqpoll maxcpus=1 reset_devices" #kexec -e But, when I am doing load on panic using kexec, it isn't working. #kexec -p /boot/vmlinuz-4.3.0-crash+ --initrd=/boot/initramfs-4.3.0-crash+.img --append="root=/dev/mapper/fedora-root 1 irqpoll maxcpus=1 reset_devices" #echo "1" >/proc/sys/kernel/sysrq #echo c > /proc/sysrq-trigger What am I doing wrong?