[Closed: Module versioning] insmod: Invalid module format

TJNII · l33t Joined: 09 Nov 2003 Posts: 648 Location: for(;;);

My kernel is adamantly refusing to insmod my modules. I haven't rebooted this system (This system needs high uptime, that is a last resort) but that is the only option I can think of at this point. I have recompiled the kernel (make clean && make) and reinstalled the modules (make modules_install). Am I missing something obvious here?

genterminl · Posted: Mon May 16, 2011 11:37 pm Post subject:

The error is some mismatch between the running kernel and the compiled module, so recompiling the kernel shouldn't matter. Did you make any (significant?) changes to the kernel configuration since your last reboot?

Do you have any running modules? (lsmod) Can you insmod or modprobe any other modules?

Note the insmod man page says "Only the most general of error messages are reported: as the work of trying to link the module is now done inside the kernel, the dmesg usually gives more information about errors." Is there anything relevant in dmesg or /var/log/messages?

TJNII · l33t Joined: 09 Nov 2003 Posts: 648 Location: for(;;);

No, no major changes. I'll double check by diffing /proc.config.gz against .config, but it should be exactly the same. In fact the modules built with this kernel binary failed this way. My current theory is that I turned on module versioning as it seemed like a good idea, but I think that has blown up on me. Dmesg isn't saying anything when I try and ismod. I haven't tried modules other than usbserial and the FTDI module. I haven't tried unloading and reloading any of the modules loaded at boot, as that has the potential to bring this box to its knees.

Just to make sure I haven't missed a memo, we're still supposed to build the 2.6 kernels by issuing only "make" and then "make modules_install" yes? (This is obviously with a proper .config and doesn't include copying the kernel image to to /boot or the bootloader)

Jaglover · Posted: Tue May 17, 2011 2:27 am Post subject:

Yes, I think there is also make modules target after you add a module in config.
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TJNII · l33t Joined: 09 Nov 2003 Posts: 648 Location: for(;;);

All right, thanks. I just wanted to make sure I wasn't doing something stupid.

I VPNed into the box and rechecked my dmesg. There is damning evidence I missed this afternoon:

Jaglover · Posted: Tue May 17, 2011 2:42 am Post subject:

Did you try forcing module loading?
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TJNII · l33t Joined: 09 Nov 2003 Posts: 648 Location: for(;;);