* Kernel module unable to find an exported symbol
@ 2008-04-13 21:18 David Erickson
2008-04-13 21:52 ` Dmitri Vorobiev
0 siblings, 1 reply; 3+ messages in thread
From: David Erickson @ 2008-04-13 21:18 UTC (permalink / raw
To: linux-kernel
Hi everyone, I have two kernel modules I am developing, both use the
call_rcu exported function. The core module finds it no problem,
installs, and uses it. The second module however when I try to insmod
it complains:
Unknown symbol call_rcu
I have verified that it is exported via /proc/kallsyms:
c04348c8 T call_rcu
I am at a loss as to how to proceed, can anyone shed some light on how
this could be happening? Or how to diagnose and debug the problem?
Thanks,
David
ps please CC me on a reply, thank you!
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Kernel module unable to find an exported symbol
2008-04-13 21:18 Kernel module unable to find an exported symbol David Erickson
@ 2008-04-13 21:52 ` Dmitri Vorobiev
2008-04-13 21:58 ` David Erickson
0 siblings, 1 reply; 3+ messages in thread
From: Dmitri Vorobiev @ 2008-04-13 21:52 UTC (permalink / raw
To: David Erickson; +Cc: linux-kernel
David Erickson пишет:
> Hi everyone, I have two kernel modules I am developing, both use the
> call_rcu exported function. The core module finds it no problem,
> installs, and uses it. The second module however when I try to insmod
> it complains:
>
> Unknown symbol call_rcu
>
> I have verified that it is exported via /proc/kallsyms:
> c04348c8 T call_rcu
>
> I am at a loss as to how to proceed, can anyone shed some light on how
> this could be happening? Or how to diagnose and debug the problem?
It is very much possible that adding the following line to the source
code of your module will help:
MODULE_LICENSE("GPL");
HTH,
Dmitri
>
> Thanks,
> David
>
> ps please CC me on a reply, thank you!
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Kernel module unable to find an exported symbol
2008-04-13 21:52 ` Dmitri Vorobiev
@ 2008-04-13 21:58 ` David Erickson
0 siblings, 0 replies; 3+ messages in thread
From: David Erickson @ 2008-04-13 21:58 UTC (permalink / raw
To: linux-kernel; +Cc: Dmitri Vorobiev
On Sun, Apr 13, 2008 at 2:52 PM, Dmitri Vorobiev<dmitri.vorobiev@gmail.com> wrote:> David Erickson пишет:>> > Hi everyone, I have two kernel modules I am developing, both use the> > call_rcu exported function. The core module finds it no problem,> > installs, and uses it. The second module however when I try to insmod> > it complains:> >> > Unknown symbol call_rcu> >> > I have verified that it is exported via /proc/kallsyms:> > c04348c8 T call_rcu> >> > I am at a loss as to how to proceed, can anyone shed some light on how> > this could be happening? Or how to diagnose and debug the problem?>> It is very much possible that adding the following line to the source> code of your module will help:>> MODULE_LICENSE("GPL");>> HTH,> Dmitri
That did the trick, thank you Dmitri!
-DavidЪТХ╨{.nг+┴╥÷╝┴╜├+%┼кЪ╠Ищ╤\x17╔┼wЪ╨{.nг+┴╥╔┼{╠ЧG╚²ИЪ┼{ay╨\x1dй┤з≥К,j\a╜╒fё╒╥h ▐О│ЙЪ▒ЙГz_Х╝\x03(╜И ▌┼щ╒j"²З\x1a╤^[m╖ЪЪ╬\a╚ЧG╚²ИЪ╒╦?≥╗Х╜з&ёЬ╖~▐А╤iO∙Ф╛z╥ vь^\x14\x04\x1a╤^[m╖ЪЪц\fЪ╤ЛЪ╒╦?√I╔
^ permalink raw reply [flat|nested] 3+ messages in thread
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