showing error while installing new kernel
ERROR "grub2-editenv: error: environment block too small"

[root@dl740 ~]# uname -r
3.10.0-862.el7.x86_64

[root@dl740 ~]# rpm -q kernel
kernel-3.10.0-957.12.1.el7.x86_64

[root@dl740 ~]# yum reinstall kernel-3.10.0-957.12.1.el7.x86_64
Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-
: manager
AutoLab | 4.3 kB 00:00:00
rhel-7-server-rpms | 3.5 kB 00:00:00
Resolving Dependencies
--> Running transaction check
---> Package kernel.x86_64 0:3.10.0-957.12.1.el7 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

=============================================================================================================================================================

Package Arch Version Repository Size

Reinstalling:
kernel x86_64 3.10.0-957.12.1.el7 rhel-7-server-rpms 48 M

Transaction Summary

Reinstall 1 Package

Total download size: 48 M
Installed size: 63 M
Is this ok [y/d/N]: y
Downloading packages:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
kernel-3.10.0-957.12.1.el7.x86_64.rpm | 48 MB 00:00:10
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : kernel-3.10.0-957.12.1.el7.x86_64 1/1
grub2-editenv: error: environment block too small.
grub2-editenv: error: environment block too small.
Verifying : kernel-3.10.0-957.12.1.el7.x86_64 1/1

Installed:
kernel.x86_64 0:3.10.0-957.12.1.el7

Complete!

Even after rebooting the machine grub not showing new kernel entry.