I have seen this message from /sbin/init before when I was experimenting with
writing my own
initrd.gz in slackware. It didn't actually have anything to do with UML. I am
not sure why you
would be getting this error message seeing as how you are not using an
initrd.gz file.
You can get this message when init doesn't like something about the way it was
invoked. The
kernel, after it mounts the root filesystem, starts /sbin/init to handle the
rest of the boot
process (running the boot scripts to start the daemons your system is
configured to run, starting
getty processes to listen to some number of virtual console devices to provide
text login prompts,
...).
After the system is booted, a user can run /sbin/init by hand to send the init
process the kernel
started messages to do various things, like re-read its config file,
/etc/inittab. That's what
all the options the init message was telling you about are for.
It's hard to imagine how the kernel itself could invoke init with the wrong
arguments. Unless you
give the kernel an init= argument, all it will do is call it like this:
/sbin/init. For some
reason, init thinks it isn't being called by the kernel to boot. There is an
undocumented (you
won't see it in the man page for init) command line argument to init, -i, that
explicitly tells it
to assume it should boot a system. I found it because I started reading the
source code for init
one day to see why it wasn't just booting for me. You might try adding this to
your kernel
command line: init="/sbin/init -i" just to see what happens.
The other thing you can try is to make a simple initrd file with some busybox
commands in it,
enough to give you the ash shell and some commands like mount, pivot_root,
chroot, so you can try
to mount the root filesystem yourself then pivot_root and chroot into it.
If you've never gone this route, you might try it. You will learn a lot more
about how the kernel
boots and how to debug boot problems in the process.
I can give you some more pointers on how to do this if you are interested.
Chris Marshall
--- Flavio <[EMAIL PROTECTED]> wrote:
> I want to post entire boot message to help you to see better my problem.
> Maybe I posted not sufficient elements:
>
> $ src/linux-2.6.18/linux ubd0=rootfs.debian.etch
> ubd1=swapfs.debianeth0=tuntap,,,
> > 192.168.1.101 noprocmm mem=512M
> > Checking that ptrace can change system call numbers...OK
> > Checking syscall emulation patch for ptrace...missing
> > Checking for tmpfs mount on /dev/shm...OK
> > Checking PROT_EXEC mmap in /dev/shm/...OK
> > Checking for the skas3 patch in the host:
> > - /proc/mm...found but disabled on command line
> > - PTRACE_FAULTINFO...not found
> > - PTRACE_LDT...found
> > UML running in SKAS0 mode
> > Checking that ptrace can change system call numbers...OK
> > Checking syscall emulation patch for ptrace...missing
> > Linux version 2.6.18-skas3-v9-pre9-fremap ([EMAIL PROTECTED]) (gcc version
> > 4.1.1(Gentoo
> > 4.1.1)) #1 Wed Oct 11 21:10:51 CEST 2006
> > Built 1 zonelists. Total pages: 131072
> > Kernel command line: ubd0=rootfs.debian.etch
> > ubd1=swapfs.debianeth0=tuntap,,,
> > 192.168.1.101 noprocmm mem=512M root=98:0
> > PID hash table entries: 4096 (order: 12, 32768 bytes)
> > Dentry cache hash table entries: 65536 (order: 7, 524288 bytes)
> > Inode-cache hash table entries: 32768 (order: 6, 262144 bytes)
> > Memory: 506112k available
> > Mount-cache hash table entries: 256
> > Checking that host ptys support output SIGIO...Yes
> > Checking that host ptys support SIGIO on close...No, enabling workaround
> > Using 2.6 host AIO
> > NET: Registered protocol family 16
> > NET: Registered protocol family 2
> > IP route cache hash table entries: 4096 (order: 3, 32768 bytes)
> > TCP established hash table entries: 16384 (order: 5, 131072 bytes)
> > TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
> > TCP: Hash tables configured (established 16384 bind 8192)
> > TCP reno registered
> > Host TLS support detected
> > Checking host MADV_REMOVE support...MADV_REMOVE failed, err = -22
> > Can't release memory to the host - memory hotplug won't be supported
> > <--------------- O_O !!!! ??????
> > mconsole (version 2) initialized on /home/flavio/.uml/iftCTz/mconsole
> > Netdevice 0 : TUN/TAP backend - IP = 192.168.1.101
> > VFS: Disk quotas dquot_6.5.1
> > Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
> > io scheduler noop registered
> > io scheduler anticipatory registered (default)
> > io scheduler deadline registered
> > io scheduler cfq registered
> > TCP bic registered
> > NET: Registered protocol family 1
> > NET: Registered protocol family 17
> > Initialized stdio console driver
> > Console initialized on /dev/tty0
> > Initializing software serial port version 1
> > ubda: unknown partition table
> > ubdb: unknown partition table
> > kjournald starting. Commit interval 5 seconds
> > EXT3-fs: mounted filesystem with ordered data mode.
> > VFS: Mounted root (ext3 filesystem) readonly.
> > Usage: init {-e VAR[=VAL] | [-t SECONDS]
> > {0|1|2|3|4|5|6|S|s|Q|q|A|a|B|b|C|c|U|u}} <----- What does it want???
> > Kernel panic - not syncing: Attempted to kill init!
> >
> > Modules linked in:
> > Pid: 1, comm: init Not tainted 2.6.18-skas3-v9-pre9-fremap <-------- I
> > don't know what does it mean.. I never saw it.
> > RIP: 0033:[<00000000404031ef>]
> > RSP: 0000007f7f9fdc28 EFLAGS: 00000246
> > RAX: ffffffffffffffda RBX: 00000000405a3af8 RCX: ffffffffffffffff
> > RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001
> > RBP: 0000000000000001 R08: 00000000000000e7 R09: ffffffffffffffc0
> > R10: 0000000000000000 R11: 0000000000000246 R12: 00000000405a3af8
> > R13: 0000000000000000 R14: 0000007f7f9ff078 R15: 0000007f7fa00fc4
> > Call Trace:
> > 6176bb88: [<60013cc7>] panic_exit+0x2f/0x49
> > 6176bba8: [<60038a63>] notifier_call_chain+0x29/0x3e
> > 6176bbd8: [<60038b08>] atomic_notifier_call_chain+0x9/0xb
> > 6176bbe8: [<6002b69a>] panic+0xe6/0x178
> > 6176bc58: [<600fbd21>] tty_write+0x1fa/0x215
> > 6176bc78: [<601009b0>] write_chan+0x0/0x20d
> > 6176bc88: [<60023d22>] wait_stub_done+0x6f/0x124
> > 6176bcd8: [<6002df7d>] do_exit+0x7b/0x3fe
> > 6176bd18: [<6002e3eb>] sys_exit_group+0x0/0x14
> > 6176bd28: [<60067995>] sys_write+0x47/0x70
> > 6176bd58: [<6002e3fd>] sys_exit_group+0x12/0x14
> > 6176bd68: [<600146ad>] handle_syscall+0x65/0x80
> > 6176bd98: [<60023fc6>] userspace+0x1ef/0x237
> > 6176bdf0: [<6000f1e2>] init+0x0/0x132
> > 6176bdf8: [<600142d5>] new_thread_handler+0xb8/0xca
> >
>
>
> 2006/10/10, Flavio <[EMAIL PROTECTED]>:
> >
> >
> > Is there really no space between the "eth0=tuntap,,, 192.168.1.101" and
> > > "noprocmm"? If so, that would cetainly break something.
> > >
> > > Jeff
> > >
> > No there isn't. I don't know why copy & paste cause this effect on the
> > mail message.
> > I also added mem=512M parameter, but I'm getting the same result.
> > Maybe there's some problem with new kernels only.
> >
> > -------------------------------------------------------------------------
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