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Old 12-04-2017, 10:17 PM   #1
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Error while loading a signed kernel module : Request for unknown module key : err -11


I have created a key pair and enrolled the public key using the mokutil
 mokutil --import pubkey.der
I am using the key pair to sign a kernel module
 scripts/sign-file sha512 private.key pubkey.der mymodule.ko
Now I am loading this signed kernel module using modprobe
 modprobe mymodule
I am getting following error. Logs are captured from /car/log/messages
Dec  4 05:33:45 localhost kernel: Request for unknown module key 'Example, Inc. Kernel signing key: 4efdd0b379fda0f5e0693cd39a773b20000f853b' err -11
Dec  4 05:33:45 localhost kernel: Hello world 1.
I was expecting that the signed kernel module should be loaded without any error, as I have enrolled the public key to kernel.
Can anybody please explain the reason for this error and how to load the signed module with out any error?

Old 12-08-2017, 02:46 PM   #2
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Distribution: CentOS 6 (pre-systemd)
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Are you using the same key that was used to sign the kernel?


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