Bug 13513 - best_copy_from_user fail.
best_copy_from_user fail.
Status: CLOSED RAWHIDE
Product: Red Hat Linux
Classification: Retired
Component: kernel (Show other bugs)
6.2
i386 Linux
medium Severity medium
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Assigned To: Michael K. Johnson
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Depends On:
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Reported: 2000-07-05 23:44 EDT by owlhuang
Modified: 2008-05-01 11:37 EDT (History)
0 users

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Last Closed: 2000-07-05 23:44:19 EDT
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Description owlhuang 2000-07-05 23:44:17 EDT
I use copy_from_user function in my module.

The kernel rejects to insert the module due to no best_copy_from_user 
symbol exported.  I have checked the /proc/ksyms, there do be 
best_copy_from_user_Rsmpe183bad0 exported.  

I precompiled my source to assembly code and there is best_copy_from_user 
but not best_copy_from_user_Rsmpe183bad0.  So, I 
checked /usr/include/linux/modules-smp/i386_ksyms.ver 
and /usr/include/linux/modules-smp/ksyms.ver, there are no relative 
definition there!!

It works if I add the following lines in i386_ksyms.ver:

#define __ver_best_copy_from_user smpe183bad0
#define best_copy_from_user _set_ver(best_copy_from_user)

Is it a bug?

Enviroment:
RedHat 6.2 with original i386 smp kernel
smp motherboard with one PIII on it.


yours, Dennis
Comment 1 Alan Cox 2000-08-22 12:22:13 EDT
Looks like some kind of module versioning problem yes
We dont have the PIII patches enabled in rawhide so closing this

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