R: [Netkit.users] Re: Re: Problems with Netkit on Fedora Core 4

[Massimo Rimondini]

Hello Antony,

I have seen a similar problem on another Fedora Core 4. My advice is to try
to disable support for "Virtual Dynamic Shared Object", a mechanism which
speeds up system calls on newer CPUs.

You can achieve this by altering the appropriate proc entry:
echo 0 > /proc/sys/kernel/vdso

Alternatively, VDSO can be permanently disabled if you append "vdso=0" to
your host kernel boot parameters (see the documentation of your bootloader -
LILO or GRUB - for information about changing kernel boot parameters).

Let me know if this works.

Regards,
Massimo.


> -----Messaggio originale-----
> Da: netkit.users-admin a dia.uniroma3.it 
> [mailto:netkit.users-admin a dia.uniroma3.it] Per conto di 
> Antony Mistretta
> Inviato: martedì 18 ottobre 2005 10.39
> A: netkit.users a dia.uniroma3.it
> Oggetto: [Netkit.users] Re: Re: Problems with Netkit on Fedora Core 4
> 
> 
> Here's the output: I see an inconsistency in ld.so and a 
> subsequent kernel 
> panic. Brrr... Thank you for your interest!
> 
> Ice
> 
> [code]
> [ice a vega ~]$ vstart --verbose --no-log --con0=this pc1
> 
> 
> ============= Starting virtual machine "pc1" =============
>    Kernel:     /opt/netkit2/kernel/netkit-kernel
>    Modules:    /opt/netkit2/kernel/modules
>    Memory:     8 MB
>    Model fs:   /opt/netkit2/fs/netkit-fs
>    Filesystem: /home/ice/pc1.disk (new)
>    Hostfs at:  /home/ice
> 
> Running ==> /opt/netkit2/kernel/netkit-kernel 
> modules=/opt/netkit2/kernel/modules name=pc1 title=pc1 
> umid=pc1 mem=12M 
> ubd0=/home/ice/pc1.disk,/opt/netkit2/fs/netkit-fs root=98:1 
> uml_dir=/home/ice/.netkit/mconsole hosthome=/home/ice con0=fd:0,fd:1 
> con1=null xterm=gnome-terminal,-t,-e
> Checking for /proc/mm...not found
> Checking PROT_EXEC mmap in /tmp...OK
> Adding 17981440 bytes to physical memory to account for 
> exec-shield gap
> tracing thread pid = 3267
> Linux version 2.6.11.7 (max a pantera) (gcc version 3.3.5 
> (Debian 1:3.3.5-13)) 
> #1 Tue Sep 13 18:38:01 CEST 2005
> Built 1 zonelists
> Kernel command line: modules=/opt/netkit2/kernel/modules 
> name=pc1 title=pc1 
> mem=12M ubd0=/home/ice/pc1.disk,/opt/netkit2/fs/netkit-fs root=98:1 
> uml_dir=/home/ice/.netkit/mconsole hosthome=/home/ice con0=fd:0,fd:1 
> con1=null
> PID hash table entries: 128 (order: 7, 2048 bytes)
> Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
> Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
> Memory: 8372k available
> Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
> Checking for host processor cmov support...Yes
> Checking for host processor xmm support...No
> Checking that ptrace can change system call numbers...OK
> Checking syscall emulation patch for ptrace...missing
> Checking that host ptys support output SIGIO...Yes
> Checking that host ptys support SIGIO on close...No, enabling 
> workaround
> Checking for /dev/anon on the host...Not available (open 
> failed with errno 
> 2)
> NET: Registered protocol family 16
> mconsole (version 2) initialized on 
> /home/ice/.netkit/mconsole/pc1/mconsole
> ubd: Synchronous mode
> Initializing Cryptographic API
> io scheduler noop registered
> io scheduler anticipatory registered
> io scheduler deadline registered
> io scheduler cfq registered
> loop: loaded (max 8 devices)
> nbd: registered device at major 43
> PPP generic driver version 2.4.2
> tun: Universal TUN/TAP device driver, 1.6
> tun: (C) 1999-2004 Max Krasnyansky <maxk a qualcomm.com>
> NET: Registered protocol family 2
> IP: routing cache hash table of 512 buckets, 4Kbytes
> TCP established hash table entries: 1024 (order: 1, 8192 bytes)
> TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
> TCP: Hash tables configured (established 1024 bind 1024)
> IPv4 over IPv4 tunneling driver
> GRE over IPv4 tunneling driver
> NET: Registered protocol family 1
> NET: Registered protocol family 10
> IPv6 over IPv4 tunneling driver
> NET: Registered protocol family 17
> Initialized stdio console driver
> Console initialized on /dev/tty0
> Initializing software serial port version 1
> Creating "/home/ice/pc1.disk" as COW file for 
> "/opt/netkit2/fs/netkit-fs"
> ubda: ubda1
> VFS: Mounted root (ext2 filesystem) readonly.
> Inconsistency detected by ld.so: rtld.c: 1192: dl_main: 
> Assertion `(void *) 
> ph->p_vaddr == _rtld_local._dl_sysinfo_dso' failed!
> Kernel panic - not syncing: Attempted to kill init!
> 
> EIP: 0073:[<400114af>] CPU: 0 Not tainted ESP: 007b:9ffffa90 EFLAGS: 
> 00200246
>     Not tainted
> EAX: ffffffda EBX: 0000007f ECX: 9ffff820 EDX: 0000000a
> ESI: 00000000 EDI: b7ffb034 EBP: 9ffffab4 DS: 007b ES: 007b
> Call Trace:
> a1c5bb60:  [<a0049fbd>] notifier_call_chain+0x2d/0x50
> a1c5bb70:  [<a0118576>] bust_spinlocks+0x46/0x50
> a1c5bb80:  [<a0037a01>] panic+0x71/0x120
> a1c5bba0:  [<a003a8d3>] do_exit+0x1c3/0x370
> a1c5bbc0:  [<a0079c78>] vfs_writev+0x58/0x70
> a1c5bbf0:  [<a003ab11>] do_group_exit+0x51/0x100
> a1c5bc20:  [<a001c1a7>] execute_syscall_tt+0xe7/0x130
> a1c5bc90:  [<a0017fb9>] record_syscall_start+0x59/0x70
> a1c5bcb0:  [<a001c23e>] syscall_handler_tt+0x4e/0x90
> a1c5bcd0:  [<a001d73d>] sig_handler_common_tt+0x8d/0x110
> a1c5bce0:  [<a001b66b>] new_thread_handler+0x15b/0x190
> a1c5bce4:  [<a00111e0>] init+0x0/0x110
> a1c5bd10:  [<a002e011>] sig_handler+0x21/0x40
> a1c5bd20:  [<a01e3cb8>] __restore+0x0/0x8
> 
> 
> [ice a vega ~]$
> [/code]
> 
> 
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