First run uname -r to see the kernel version you're running.
Then make sure that the following packages match your kernel
kernel-headers
kernel-devel
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sudo yum install kernel-headers-`uname -r`
sudo yum install kernel-devel-`uname -r`
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If your kernel-headers version is more recent than your kernel, just remove it, then reinstall it specifying the version. That should do it.
Again, hope this helps someone.
