On Mon, Nov 05, 2012 at 09:51:19AM +0400, Vladimir Murzin wrote: > I've not tried your module, but I suppose that you should get warning > as soon as you try to take write semaphore once again. > Thank you for your mail. I wanted to try what you've suggested, but now I'm facing a different problem. For kernel-janitorial purpose I sync my local repo to the linux-next tree almost everyday and once in a while I build and boot from the latest kernel from the linux-next tree. But most of the time, After syncing to the latest linux-next tree, I perform only following steps to build some staging drivers under linux-next tree: >From the top of the latest linux-next tree: # make oldconfig # make prepare # make modules_prepare # make M=drivers/staging/<some driver> The above steps work fine, except that I get some warning message. <snip> WARNING: Symbol version dump /home/amit/lkernel/Module.symvers is missing; modules will have no dependencies and modversions. <snip> So my understanding is that I've booted from version-X and the linux-next kernel version is version-Y and because of this version mismatch, I see the above WARNING message. Now, because of this kernel version mismatch I am not able to insert the module. An attempt to do so returns following error message: root@ubuntu:/home/amit/ldd3/misc-modules/echo# insmod echo.ko insmod: error inserting 'echo.ko': -1 Invalid module format Some information regarding my setup: amit@ubuntu:~/ldd3/misc-modules/echo$ uname -r 3.7.0-rc3-next-20121029 amit@ubuntu:~/ldd3/misc-modules/echo$ ll /lib/modules/`uname -r`/build lrwxrwxrwx 1 root root 18 Oct 29 22:02 /lib/modules/3.7.0-rc3-next-20121029/build -> /home/amit/lkernel/ Here the /lib/modules/3.7.0-rc3-next-20121029/build is a softlink to the latest kernel sources. If I try to install the header files for my current kernel(returned by 'uname -r'), I get following error message: <snip> amit@ubuntu:~$ sudo apt-get install linux-headers-$(uname -r) Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package linux-headers-3.7.0-rc3-next-20121029 E: Couldn't find any package by regex 'linux-headers-3.7.0-rc3-next-20121029' <snip> How do I ovecome this ? Do I need to build the latest kernel(linux-next) and boot from it, whenever I sync my local linux-next repository with the remote? I'd like to be able to check my local changes by building and loading the module/subsystem. -Amit _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
