Messages in this thread | | | Date | Thu, 02 Dec 2004 21:13:27 -0800 | From | "Randy.Dunlap" <> | Subject | Re: (kernel 2.6.9) insmod: -1 Invalid module format |
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Stephane Coulombe Bisson wrote: > Hi, > > I'm new to Linux module dev, I copied a very simple module from a book > (http://lwn.net/Kernel/LDD2/ch02.lwn) and I can't insert it into the > kernel. > > I found hundreds of bug reports about it on google without any solution. > I must be doing something wrong... > > /*----------mymodule.c-----------*/ > #define MODULE > #include <linux/module.h> > int init_module(void) > { printk("<1>Hello, world\n"); return 0; } > void cleanup_module(void) > { printk("<1>Goodbye cruel world\n"); } > /*----------EOF-----------*/ > > # gcc -c mymodule.c > # insmod mymodule.o > insmod: error inserting 'mymodule.o': -1 Invalid module format
a. You need to use more than 'gcc -c module.c' to build a module for Linux 2.6.x. See current linux/Documentation/kbuild/*.txt .
b. You load a module file named "mymodule.ko" for Linux 2.6.x, not "mymodule.o".
c. Make sure that you are using current module-init-tools package.
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