[ale] Why won't my module load?

[Charles Shapiro]

Yep, I think that is the case here. I finally broke down and loaded the
kernel I built on the box we're trying to load the ipx module on, added
a stanza to its grub.conf file, and booted the dang thing.

Sure enough, "insmod ipx.o" completes without error, and "lsmod" shows 
that the ipx module is in fact loaded. depmod(8) still kvetches about 
unresolved symbols, but modprobe or insmod seems to complete just fine.

Bummer that we'll have to upgrade the kernel on a running machine
though.

-- CHS

On Tue, 2003-04-29 at 13:13, Chris Ricker wrote:
> On Tue, 29 Apr 2003, Michael D. Hirsch wrote:
> 
> > > > # insmod ipx.o
> > > > Using /lib/modules/2.4.18/misc/ipx.o
> > > > /lib/modules/2.4.18/misc/ipx.o: unresolved symbol
> 
> 
> > depmod: *** Unresolved symbols in /lib/modules/2.4.18/kernel/net/ipx/ipx.o
> 
> Note the paths. You've got dueling modules from two different kernel 
> compiles, for one thing.
> 
> > > You did boot the new kernel you got when you recompiled with ipx
> > > support, right?
> > 
> > I am running my old kernel that was compiled fromt he same .config (except 
> > for ipx) that was used to make ipx.o, so in pricimple I beleive I 
> > shouldn't need any reboot.
> 
> In principle, yes. In practice, no. ;-)
> 
> For one thing, dependency tracking in the kernel build isn't terribly good
> in the <= 2.4 kernels. If you do something like add a major subsystem, or
> remove one, or switch one from static to module or vice-versa, your safest
> bet is to make clean, build everything again from scratch, the reboot....
> The build system should figure out just the parts which need recompiling, in
> theory, but in practice it doesn't work all that well.
> 
> For another, a module may require hooks within the kernel. You'll only get 
> those by enabling the module, then compiling the kernel, then booting the 
> kernel, then loading the module.
> 
> later,
> chris
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