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Top Forums UNIX for Dummies Questions & Answers insmod: Invalid module format error Post 302595166 by rupeshkp728 on Thursday 2nd of February 2012 09:45:15 AM
Old 02-02-2012
insmod: Invalid module format error

I have open suse kernel kernel 3.1.0-1.2-desktop on which I used kernel source 3.1.10-1.2 downloaded from kernel.org.

The module gets built.
While loading a kernel module I am getting Invalid module format error with description "first_driver: no symbol version for module_layout"

The following are the logs:
Code:
linux-k2kj:/home/rkpsuse/FirstDriver # insmod first_driver.ko 
insmod: error inserting 'first_driver.ko': -1 Invalid module format

linux-k2kj:/home/rkpsuse/FirstDriver # modinfo first_driver.ko 
filename:       first_driver.ko
description:    My First Driver
author:         Emertxe Info. Tech
license:        GPL
srcversion:     C4CCFC5DA59927FA4A479E6
depends:        
vermagic:       3.1.10-1.2-desktop SMP preempt mod_unload modversions 686 

linux-k2kj:/home/rkpsuse/FirstDriver # uname -r
3.1.0-1.2-desktop

dmesg
first_driver: no symbol version for module_layout

I guess this is because of mismatching kernel versions.

Cannot I use kernel source 3.1.10-1.2-desktop on kernel 3.1.0-1.2-desktop?
Where can I get the kernel source for 3.1.0-1.2-desktop

How to resolve this issue?
 

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UPDATE-DESKTOP-DATABASE(1)				      General Commands Manual					UPDATE-DESKTOP-DATABASE(1)

NAME
update-desktop-database - Build cache database of MIME types handled by desktop files SYNOPSIS
update-desktop-database [-q|--quiet] [-v|--verbose] [DIRECTORY...] DESCRIPTION
The update-desktop-database program is a tool to build a cache database of the MIME types handled by desktop files. The cache database contains the list of MIME types that can be handled by desktop files, as well as, for each MIME type, a list of desktop files that can handle this MIME type. This cache database ease the work of applications that need to find an application that can open a document of a specific MIME type: those applications will not have to parse all the desktop files existing on the system, and can instead parse this cache database. If no DIRECTORY is specified as argument, the desktop files that will be processed are the ones installed in $XDG_DATA_DIRS/applications. If both the --quiet and --verbose options are used, then --verbose will be ignored. OPTIONS
The following options are supported: -q, --quiet Do not display any information about processing and updating progress. -v, --verbose Display more information about processing and updating progress. NOTES
If an invalid MIME type is met, it will be ignored and the creation of the cache database will continue. The format of the cache database is a simple desktop entry format, with a MIME Cache group, containing one key per MIME type. The key name is the MIME type, and the key value is the list of desktop file that can handle this MIME type. The order of the desktop files found for a MIME type is not significant. Therefore, an external mechanism must be used to determine what is the preferred desktop file for a MIME type. EXAMPLE
Here is a simple example of a cache database: [MIME Cache] application/x-shellscript=gedit.desktop; text/plain=gedit.desktop;gvim.desktop; video/webm=totem.desktop; This cache database is created with three desktop files, each containing a MimeType key: gedit.desktop: MimeType=text/plain;application/x-shellscript; gvim.desktop: MimeType=text/plain; totem.desktop: MimeType=video/webm; FILES
$XDG_DATA_DIRS/applications/mimeinfo.cache This file is the cache database created by update-desktop-database. BUGS
If you find bugs in the update-desktop-database program, please report these on https://bugs.freedesktop.org. FREEDESKTOP.ORG UPDATE-DESKTOP-DATABASE(1)
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