snull_load insmod: unresolved symbol

snull_load insmod: unresolved symbol

[Donald Duckie]

hi!

has anyone ever tried compiling and running snull on
Linux2.4.18-sh?

i tried compiling snull(without any modification) on
Linux2.4.18-sh.
upon running snull_load, i got the following:
Using /lib/modules/2.4.18-sh/kernel/drivers/net/snull.
insmod: unresolved symbol kmalloc_R93d4cfe6
insmod: unresolved symbol skb_under_panic_R69955398
insmod: unresolved symbol register_netdev_R09e03f58
insmod: unresolved symbol eth_type_trans_R0a4e7a1c
insmod: unresolved symbol unregister_netdev_R98eda3f8
insmod: unresolved symbol printk_Rdd132261
insmod: unresolved symbol __udivsi3_i4
insmod: unresolved symbol memcpy_R11f7ce5e
insmod: unresolved symbol jiffies_R0da02d67
insmod: unresolved symbol alloc_skb_R0177038c
insmod: unresolved symbol softnet_data_R258cb892
insmod: unresolved symbol cpu_raise_softirq_R4d09166c
insmod: unresolved symbol __kfree_skb_R1741771d
insmod: unresolved symbol memset_R2bc95bd4
insmod: unresolved symbol kfree_R037a0cba
insmod: unresolved symbol netif_rx_R8316ccd0
insmod: unresolved symbol ether_setup_R586ea93a
insmod: unresolved symbol skb_over_panic_R4bb59969

can someone please tell me what's wrong with this,
and how to fix this without chaning Linux versions?


thank you for you help in advance :-)



-
donald


		
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Re: snull_load insmod: unresolved symbol

[Randy.Dunlap]

On Wed, 15 Sep 2004 04:34:34 -0700 (PDT) Donald Duckie wrote:

| hi!
| 
| has anyone ever tried compiling and running snull on
| Linux2.4.18-sh?
| 
| i tried compiling snull(without any modification) on
| Linux2.4.18-sh.
| upon running snull_load, i got the following:
| Using /lib/modules/2.4.18-sh/kernel/drivers/net/snull.
| insmod: unresolved symbol kmalloc_R93d4cfe6
| insmod: unresolved symbol skb_under_panic_R69955398
| insmod: unresolved symbol register_netdev_R09e03f58
| insmod: unresolved symbol eth_type_trans_R0a4e7a1c
| insmod: unresolved symbol unregister_netdev_R98eda3f8
| insmod: unresolved symbol printk_Rdd132261
| insmod: unresolved symbol __udivsi3_i4
| insmod: unresolved symbol memcpy_R11f7ce5e
| insmod: unresolved symbol jiffies_R0da02d67
| insmod: unresolved symbol alloc_skb_R0177038c
| insmod: unresolved symbol softnet_data_R258cb892
| insmod: unresolved symbol cpu_raise_softirq_R4d09166c
| insmod: unresolved symbol __kfree_skb_R1741771d
| insmod: unresolved symbol memset_R2bc95bd4
| insmod: unresolved symbol kfree_R037a0cba
| insmod: unresolved symbol netif_rx_R8316ccd0
| insmod: unresolved symbol ether_setup_R586ea93a
| insmod: unresolved symbol skb_over_panic_R4bb59969
| 
| can someone please tell me what's wrong with this,
| and how to fix this without chaning Linux versions?

You are building the module with module versioning turned on,
but your kernel is built without module versions, or it is built
with module versions, but they don't match your current kernel
source code.

You'll need to determine which is the case/problem and change
some part of that config.

--
~Randy

Re: snull_load insmod: unresolved symbol

[Donald Duckie]

hi!

now, i am quite confused with what was informed
because it seems that it is none from those.

here is what was done:
i compiled the snull source file on 2.4.18-sh which i
got from
http://www.oreilly.com.tw/editor_column/a138_read.html.
it was mentioned in that site that snull was compiled
with 2.4.24.

anyway, compilation with 2.4.18-sh was successful,
but upon running insmod on 2.4.18-sh, i got those
unresolved errors. 

any help/information are very  much welcome.



i have some questions though (i am not quite familiar
with the workarounds of linux):

(1)  what does it mean if the functions cannot be
found on /proc/ksyms? almost all but the "insmod:
unresolved symbol jiffies_R0da02d67" are not defined
in that file.

(2) i am cross-compiling. i also tried running "depmod
-a" prior to compilation, but depmod wrote into
/lib/modules/2.4.24, instead of
/lib/modules/2.4.18-sh. both directories exists.
do i really need to run depmod? how will i made it
update the /lib/modules/2.4.18-sh directory instead of
the /lib/modules/2.4.24 directory?

(3) and what is meant by "i need to determine which is
the case/problem and change some part of that config."
which/what config should i change? 


i am waiting for your good insights . . .
thank you very much.



--- "Randy.Dunlap" <rddunlap@osdl.org> wrote:

> On Wed, 15 Sep 2004 04:34:34 -0700 (PDT) Donald
> Duckie wrote:
> 
> | hi!
> | 
> | has anyone ever tried compiling and running snull
> on
> | Linux2.4.18-sh?
> | 
> | i tried compiling snull(without any modification)
> on
> | Linux2.4.18-sh.
> | upon running snull_load, i got the following:
> | Using
> /lib/modules/2.4.18-sh/kernel/drivers/net/snull.
> | insmod: unresolved symbol kmalloc_R93d4cfe6
> | insmod: unresolved symbol
> skb_under_panic_R69955398
> | insmod: unresolved symbol
> register_netdev_R09e03f58
> | insmod: unresolved symbol eth_type_trans_R0a4e7a1c
> | insmod: unresolved symbol
> unregister_netdev_R98eda3f8
> | insmod: unresolved symbol printk_Rdd132261
> | insmod: unresolved symbol __udivsi3_i4
> | insmod: unresolved symbol memcpy_R11f7ce5e
> | insmod: unresolved symbol jiffies_R0da02d67
> | insmod: unresolved symbol alloc_skb_R0177038c
> | insmod: unresolved symbol softnet_data_R258cb892
> | insmod: unresolved symbol
> cpu_raise_softirq_R4d09166c
> | insmod: unresolved symbol __kfree_skb_R1741771d
> | insmod: unresolved symbol memset_R2bc95bd4
> | insmod: unresolved symbol kfree_R037a0cba
> | insmod: unresolved symbol netif_rx_R8316ccd0
> | insmod: unresolved symbol ether_setup_R586ea93a
> | insmod: unresolved symbol skb_over_panic_R4bb59969
> | 
> | can someone please tell me what's wrong with this,
> | and how to fix this without chaning Linux
> versions?
> 
> You are building the module with module versioning
> turned on,
> but your kernel is built without module versions, or
> it is built
> with module versions, but they don't match your
> current kernel
> source code.
> 
> You'll need to determine which is the case/problem
> and change
> some part of that config.
> 
> --
> ~Randy
> 


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Re: snull_load insmod: unresolved symbol

[Randy.Dunlap]

On Wed, 15 Sep 2004 21:45:14 -0700 (PDT) Donald Duckie wrote:

| 
| hi!
| 
| now, i am quite confused with what was informed
| because it seems that it is none from those.
| 
| here is what was done:
| i compiled the snull source file on 2.4.18-sh which i
| got from
| http://www.oreilly.com.tw/editor_column/a138_read.html.
| it was mentioned in that site that snull was compiled
| with 2.4.24.
| 
| anyway, compilation with 2.4.18-sh was successful,
| but upon running insmod on 2.4.18-sh, i got those
| unresolved errors. 
| 
| any help/information are very  much welcome.

I just tested on 2.4.current (2.4.28-pre3).  No problems.
Or had you already solved most of this one?

| i have some questions though (i am not quite familiar
| with the workarounds of linux):
| 
| (1)  what does it mean if the functions cannot be
| found on /proc/ksyms? almost all but the "insmod:
| unresolved symbol jiffies_R0da02d67" are not defined
| in that file.

Is "jiffies" in /proc/ksyms or in the System.map file for the
kernel that you are running/testing?  The Rxxxxxxx is a
CRC or checksum of (some) kernel header files.  This is done
when CONFIG_MODVERSIONS is enabled in the kernel .config,
so that modules must be built for precisely the same kernel
into which they are loaded.  FWIW, I don't use CONFIG_MODVERSIONS:
# CONFIG_MODVERSIONS is not set
so I bypass this problem, but you are certainly not the first
person to have this problem.  I thought it was in the FAQ (see end
of any lkml email), but I didn't find it there.

Check other symbols for [near] presence in /proc/ksyms or System.map
also.

| (2) i am cross-compiling. i also tried running "depmod
| -a" prior to compilation, but depmod wrote into
| /lib/modules/2.4.24, instead of
| /lib/modules/2.4.18-sh. both directories exists.
| do i really need to run depmod? how will i made it
| update the /lib/modules/2.4.18-sh directory instead of
| the /lib/modules/2.4.24 directory?

What kernel source tree top-level directory were you in when you
ran 'depmod'?

'depmod' should be used to put kernel-tree modules into
/lib/modules/v.x.y.  However, for modules such as snull, which
aren't needed for booting, you don't need to use depmod.
Just cd to the directory containing the .o file and load it.

| (3) and what is meant by "i need to determine which is
| the case/problem and change some part of that config."
| which/what config should i change? 

Probably CONFIG_MODVERSIONS.  You can build the kernel and modules
with CONFIG_MODVERSIONS disabled (off), or you can build them all
with CONFIG_MODVERSIONS=y.  You can't mix them, which is what it
looks like you did.

| i am waiting for your good insights . . .
| thank you very much.
| 
| 
| --- "Randy.Dunlap" <rddunlap@osdl.org> wrote:
| 
| > On Wed, 15 Sep 2004 04:34:34 -0700 (PDT) Donald
| > Duckie wrote:
| > 
| > | hi!
| > | 
| > | has anyone ever tried compiling and running snull
| > on
| > | Linux2.4.18-sh?
| > | 
| > | i tried compiling snull(without any modification)
| > on
| > | Linux2.4.18-sh.
| > | upon running snull_load, i got the following:
| > | Using
| > /lib/modules/2.4.18-sh/kernel/drivers/net/snull.
| > | insmod: unresolved symbol kmalloc_R93d4cfe6
| > | insmod: unresolved symbol
| > skb_under_panic_R69955398
| > | insmod: unresolved symbol
| > register_netdev_R09e03f58
| > | insmod: unresolved symbol eth_type_trans_R0a4e7a1c
| > | insmod: unresolved symbol
| > unregister_netdev_R98eda3f8
| > | insmod: unresolved symbol printk_Rdd132261
| > | insmod: unresolved symbol __udivsi3_i4
| > | insmod: unresolved symbol memcpy_R11f7ce5e
| > | insmod: unresolved symbol jiffies_R0da02d67
| > | insmod: unresolved symbol alloc_skb_R0177038c
| > | insmod: unresolved symbol softnet_data_R258cb892
| > | insmod: unresolved symbol
| > cpu_raise_softirq_R4d09166c
| > | insmod: unresolved symbol __kfree_skb_R1741771d
| > | insmod: unresolved symbol memset_R2bc95bd4
| > | insmod: unresolved symbol kfree_R037a0cba
| > | insmod: unresolved symbol netif_rx_R8316ccd0
| > | insmod: unresolved symbol ether_setup_R586ea93a
| > | insmod: unresolved symbol skb_over_panic_R4bb59969
| > | 
| > | can someone please tell me what's wrong with this,
| > | and how to fix this without chaning Linux
| > versions?
| > 
| > You are building the module with module versioning
| > turned on,
| > but your kernel is built without module versions, or
| > it is built
| > with module versions, but they don't match your
| > current kernel
| > source code.
| > 
| > You'll need to determine which is the case/problem
| > and change
| > some part of that config.

--
~Randy