vermagic

If the module does not match that of the kernel, insmod is unhappy and fails.

Get it from kernel module:

modinfo mymod.ko

Override it on module source:

MODULE_INFO(vermagic, "newver");

On the Linux kernel 4.9.6, it is defined under include/linux/vermagic.h:

#define VERMAGIC_STRING                                                 \
        UTS_RELEASE " "                                                 \
        MODULE_VERMAGIC_SMP MODULE_VERMAGIC_PREEMPT                     \
        MODULE_VERMAGIC_MODULE_UNLOAD MODULE_VERMAGIC_MODVERSIONS       \
        MODULE_ARCH_VERMAGIC

TODO can you get it from running kernel from userland? https://lists.kernelnewbies.org/pipermail/kernelnewbies/2012-October/006306.html

Desktop modprobe has a flag to skip the check:

`--force-modversion`

Looks like it just strips modversion information from the module, and then the kernel skips the check.

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vermagic

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