UML installation problem

[galg]

I have built a UML (linux-2.6.3-uml1) as explained in the Gentoo guide for UML.
However, when trying to run on on a machine with kernel 2.6.5-mm1, it gets stuck after printing:

bash-2.05b$ ./linux-yuval ubd0=root_fs2 ubd1=swap_fs
Checking for the skas3 patch in the host...not found
Checking for /proc/mm...not found
tracing thread pid = 28452
Linux version 2.6.3-uml1-1um (root@yuval_scharf) (gcc version 3.3.2 20040119 (Gentoo Linux 3.3.2-r7, propolice-3.3-7)) #3 Mon Apr 12 19:55:01 IDT 2004
On node 0 totalpages: 8192
DMA zone: 8192 pages, LIFO batch:2
Normal zone: 0 pages, LIFO batch:1
HighMem zone: 0 pages, LIFO batch:1
Built 1 zonelists
Kernel command line: ubd0=root_fs2 ubd1=swap_fs root=98:0
PID hash table entries: 16 (order 4: 128 bytes)
Memory: 29464k available
Calibrating delay loop... 3683.12 BogoMIPS
Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
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 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)
POSIX conformance testing by UNIFIX
NET: Registered protocol family 16
mconsole (version 2) initialized on /home/galg/.uml/Mohky8/mconsole
devfs: v1.22 (20021013) Richard Gooch (rgooch@atnf.csiro.au)
devfs: boot_options: 0x1
pty: 256 Unix98 ptys configured
NET: Registered protocol family 2

A friend had run my UML on his machine (also 2.6.5-mm1), and had no problems. What could be the problem on my host?

[aridhol]

Don't post the same question in severall forums. It's bad practise and upsets ppl.

https://forums.gentoo.org/viewtopic.php?p=1038501
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[galg]

Sorry...