Hi NG,
On boot process I see that it failed to execute /bin/bash:

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...not found: No such file or directory
  - PTRACE_FAULTINFO...not found
  - PTRACE_LDT...not found
UML running in SKAS0 mode
Checking that ptrace can change system call numbers...OK
Checking syscall emulation patch for ptrace...missing
Linux version 2.6.21 (unknown) ([EMAIL PROTECTED]) (gcc version 4.1.3
20070601 (prerelease) (Debian 4.1.2-12)) #1 Wed Jun 20 18:26:31 IDT 2007
Built 1 zonelists.  Total pages: 8080
Kernel command line: init=/bin/bash rw root=98:0
PID hash table entries: 128 (order: 7, 1024 bytes)
Dentry cache hash table entries: 4096 (order: 3, 32768 bytes)
Inode-cache hash table entries: 2048 (order: 2, 16384 bytes)
Memory: 29108k 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: 512 (order: 0, 4096 bytes)
TCP established hash table entries: 1024 (order: 2, 16384 bytes)
TCP bind hash table entries: 1024 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 1024 bind 1024)
TCP reno registered
Checking host MADV_REMOVE support...OK
mconsole (version 2) initialized on /root/.uml/CYfvsm/mconsole
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 cubic 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
EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended
VFS: Mounted root (ext2 filesystem).
Failed to execute /bin/bash.  Attempting defaults...
Kernel panic - not syncing: No init found.  Try passing init= option to
kernel.

Modules linked in:
Pid: 1, comm: swapper Not tainted 2.6.21
RIP: 0033:[<00002b4cef2340c7>]
RSP: 00002b4cef556fd0  EFLAGS: 00000212
RAX: 0000000000000000 RBX: 0000000000003271 RCX: ffffffffffffffff
RDX: 0000000000000000 RSI: 0000000000000013 RDI: 0000000000003271
RBP: 00002b4cef556fe8 R08: 0000000000000000 R09: 00002b4cef556fe8
R10: 0000000000000000 R11: 0000000000000212 R12: 000000000000326e
R13: 00002b4cef556000 R14: 00007fffbbcc65c8 R15: 00007fffbbcc6758
Call Trace:
60297db8:  [<60011960>] panic_exit+0x2f/0x49
60297dd8:  [<60035d07>] notifier_call_chain+0x29/0x3e
60297e08:  [<60035dac>] atomic_notifier_call_chain+0x9/0xb
60297e18:  [<60029712>] panic+0xe6/0x17d
60297e68:  [<60069c31>] do_execve+0x1ed/0x1ff
60297e98:  [<6000d97d>] um_execve+0xe/0x42
60297ec8:  [<6001041d>] kernel_execve+0x2d/0x38
60297f08:  [<6000d374>] try_name+0x0/0x1c2
60297f18:  [<60001798>] init+0x86/0x8a
60297f48:  [<6001eacf>] run_kernel_thread+0x41/0x4a
60297f58:  [<60001712>] init+0x0/0x8a
60297f98:  [<6001eab6>] run_kernel_thread+0x28/0x4a
60297fc8:  [<60011e20>] new_thread_handler+0x67/0x91

In root_fs /bin/bash is with following modes:
-rwxr-xr-x 1 root root 769368 2006-12-12 00:28 bin/bash*


What is reason?

Thanks for help.

Leonid


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