qemu linux kernel with busybox booting problem
Hi all, I was trying to boot linux kernel with qemu using custom busybox , having booting problem. I did the following : dd if=/dev/zero of=rootfs.img bs=1k count=2048 mkfs.ext2 i 1024 F rootfs.img mkdir /mnt/rootfs mount o loop rootfs.img /mnt/rootfs rsync a busybox/_install/ /mnt/rootfs/ chown R root:root /mnt/rootfs/ sync qemu -m 64 -hda rootfs.img -kernel linux2.6.28.4/arch/x86/boot /bzImage -append "root=/dev/hda" while booting it shows: VFS : can not open hda append proper root fs in "root=" Looking for inputs about how to do it correctly. Thanks, Soumen Acharya IIIT Bangalore 26/C Electronics City Bangalore 560 100 INDIA Mobile-(+91)9916596352
Re: CONFIG_INITRAMFS_SOURCE ??
Hi... On Sun, Jun 21, 2009 at 12:37 AM, Lenny M wrote: > What is CONFIG_INITRAMFS_SOURCE ? > How can I use it to update my Debian GNU/Linux system kernel to 2.6.30 ? Probably a bit old document, but hopefully still relevant and it could help you to understand what CONFIG_INITRAMFS_SOURCE is: http://free-electrons.com/kerneldoc/latest/early-userspace/README regards, Mulyadi -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecar...@nl.linux.org Please read the FAQ at http://kernelnewbies.org/FAQ
Re: KDB Hangs !
Hi... On Sat, Jun 20, 2009 at 11:19 PM, Lenny M wrote: > Yes , I am sure I am using proper kdb patches. any other tools do you > suggest to debug filesystems ? > > Regards, > Leena M. > > On Sat, Jun 20, 2009 at 8:42 PM, Mulyadi Santosa > wrote: >> >> Hi.. >> >> On 6/20/09, Lenny M wrote: >> > I patched the kernel linux-2.6./16.27/18 with kdb. None of them is >> > working >> > the system hangs and the CPU usage becomes high gradually ( probably , >> > not >> > sure !! ) >> > Please help with this ! >> > >> > Also , Keyboard(USB) doesn't respond. >> > >> > Is there any solution to this !! >> >> probably a bug. Before we go further, are you sure you are using the >> latest kdb patch and the latest vanilla kernel source? First of all, please don't do top post in this mailing list. About debugging filesystem, do you mean you want to debug filesystem related code? Hm, I think you can use User Mode Linux. Head over http://user-mode-linux.sourceforge.net/old/debugging.html to get further info. regards, Mulyadi -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecar...@nl.linux.org Please read the FAQ at http://kernelnewbies.org/FAQ
Re: how to make system calls from kernel module?
On Sat, 2009-06-20 at 09:59 -0700, krushnaal pai wrote: > how to make system calls from kernel module? > > or > > how to include library headers in modules so as to use open,read write > functtions? (Most of the time) You cannot. You could resort to some sort of hacks to use system call handlers but it is not advisable. You should use kernel specific functions to solve your problems. Razvan -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecar...@nl.linux.org Please read the FAQ at http://kernelnewbies.org/FAQ
CONFIG_INITRAMFS_SOURCE ??
What is CONFIG_INITRAMFS_SOURCE ? How can I use it to update my Debian GNU/Linux system kernel to 2.6.30 ? -Leena M.
Re: how to make system calls from kernel module?
On Sat, Jun 20, 2009 at 10:29 PM, krushnaal pai wrote: > how to make system calls from kernel module? > > or > > how to include library headers in modules so as to use open,read write Why do you need that ? What are you trying to do ? Isn't this a repeated question ?? Thanks - Manish > functtions? > -- Thanks - Manish -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecar...@nl.linux.org Please read the FAQ at http://kernelnewbies.org/FAQ
how to make system calls from kernel module?
how to make system calls from kernel module? or how to include library headers in modules so as to use open,read write functtions?
Re: KDB Hangs !
Yes , I am sure I am using proper kdb patches. any other tools do you suggest to debug filesystems ? Regards, Leena M. On Sat, Jun 20, 2009 at 8:42 PM, Mulyadi Santosa wrote: > Hi.. > > On 6/20/09, Lenny M wrote: > > I patched the kernel linux-2.6./16.27/18 with kdb. None of them is > working > > the system hangs and the CPU usage becomes high gradually ( probably , > not > > sure !! ) > > Please help with this ! > > > > Also , Keyboard(USB) doesn't respond. > > > > Is there any solution to this !! > > probably a bug. Before we go further, are you sure you are using the > latest kdb patch and the latest vanilla kernel source? > > regards, > > Mulyadi. >
Re: KDB Hangs !
Hi.. On 6/20/09, Lenny M wrote: > I patched the kernel linux-2.6./16.27/18 with kdb. None of them is working > the system hangs and the CPU usage becomes high gradually ( probably , not > sure !! ) > Please help with this ! > > Also , Keyboard(USB) doesn't respond. > > Is there any solution to this !! probably a bug. Before we go further, are you sure you are using the latest kdb patch and the latest vanilla kernel source? regards, Mulyadi. -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecar...@nl.linux.org Please read the FAQ at http://kernelnewbies.org/FAQ
Re: plz gimme linux kernel module programming ebook?
On 6/20/09, krushnaal pai wrote: > plz mail me linux kernel module programming ebook as an attachment, i > searced it all the way on net but couldnt get it? > make sure that ebook is a legitimate copy, not a pirated copy. For example, google for Linux Device Drivers 3rd edition. Kernelnewbies website also has many information and valuable links. Don't miss LWN kernel section too. regards, Mulyadi. -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecar...@nl.linux.org Please read the FAQ at http://kernelnewbies.org/FAQ
Re: KERNEL PANIC !
Hi.. On 6/20/09, Lenny M wrote: > Hi All , > > I am updating the kernel of my debian 'etch' GNU/Linux system. > I am getting a kernel Panic: > > umount:devfs: not mounted > mount : unknown filesystem type 'devfs' > umount: devfs: not mounted > pivot_root : No such file or directory > /sbin/init: 432: cannot open dev/console : No such file > Kernel Panic - not syncing : Attempted to kill init ! > > Please help me with this. AFAIK, 2.6 no longer uses devfs. It is now replaced by udev. However, it's not a simple drop-in replacement. Without further info about your Debian installation, you probably have to do a lot of upgrade tasks. Try to consult to Debian mailing list/forum too. regards, Mulyadi -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecar...@nl.linux.org Please read the FAQ at http://kernelnewbies.org/FAQ
Re: finding elf headers
Hi... On 6/19/09, krushnaal pai wrote: > how to identify the files used by an elf from the headers? > where can we find the elf headers for any elf? > What do you mean by "the file used by an elf"? Dynamic libraries which are linked to the ELF binary? then you can use "ldd". For the rest of your ELF related identification, read the man pages of "readelf" or "eu-readelf". regards, Mulyadi -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecar...@nl.linux.org Please read the FAQ at http://kernelnewbies.org/FAQ
KDB Hangs !
I patched the kernel linux-2.6./16.27/18 with kdb. None of them is working the system hangs and the CPU usage becomes high gradually ( probably , not sure !! ) Please help with this ! Also , Keyboard(USB) doesn't respond. Is there any solution to this !! Regards, Leena M.
KERNEL PANIC !
Hi All , I am updating the kernel of my debian 'etch' GNU/Linux system. I am getting a kernel Panic: umount:devfs: not mounted mount : unknown filesystem type 'devfs' umount: devfs: not mounted pivot_root : No such file or directory /sbin/init: 432: cannot open dev/console : No such file Kernel Panic - not syncing : Attempted to kill init ! Please help me with this. Regards, Leena M.
