Check this out for SKAS: http://www.linux.com/feature/59404
http://user-mode-linux.sourceforge.net/skas.html And if u found out something on tuntap, let me know!!! searching "tuntap" indicated that it is a common term belong to that of Solaris, Linux, MacOS, BSD etc..... http://en.wikipedia.org/wiki/TUN/TAP Very interesting!!! On 10月15日, 上午1时34分, "Maninder Singh" <[EMAIL PROTECTED]> wrote: > I am trying to run UML. when i give the following command, error occurs as > shown below: > *# ./linux-2.6.22-rc2 mem=128M eth0=tuntap,tap0* > > Now I want to know two things: > > 1) what does eth0=tuntap,tap0 means? I have configured tap0 in host and can > understand if only eth0=tap0 would be specified. But why are we writing > tuntap,tap0? > > 2) why is command not giving success? does it demand for skas3 patch to be > installed? > > --------------------------------------------------------------------------------- > > *# ./linux-2.6.22-rc2 mem=128M eth0=tuntap,tap0* > > Core dump limits : > soft - 0 > hard - NONE > Checking that ptrace can change system call numbers...OK > Checking syscall emulation patch for ptrace...OK > Checking advanced syscall emulation patch for ptrace...OK > 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 > Adding 20402176 bytes to physical memory to account for exec-shield gap > Linux version 2.6.22-rc2 ([EMAIL PROTECTED]) (gcc version 4.1.1 > 20070105 (Red Hat 4.1.1-51)) #342 Wed May 23 11:56:49 EDT 2007 > Built 1 zonelists. Total pages: 37455 > Kernel command line: mem=128M eth0=tuntap,tap0 root=98:0 > PID hash table entries: 1024 (order: 10, 4096 bytes) > Dentry cache hash table entries: 32768 (order: 5, 131072 bytes) > Inode-cache hash table entries: 16384 (order: 4, 65536 bytes) > Memory: 126548k available > Mount-cache hash table entries: 512 > Checking for host processor cmov support...Yes > Checking for host processor xmm support...No > 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: 2048 (order: 1, 8192 bytes) > TCP established hash table entries: 8192 (order: 4, 65536 bytes) > TCP bind hash table entries: 8192 (order: 3, 32768 bytes) > TCP: Hash tables configured (established 8192 bind 8192) > TCP reno registered > Checking host MADV_REMOVE support...OK > mconsole (version 2) initialized on /root/.uml/mi43lF/mconsole > Host TLS support detected > Detected host type: i386 > VFS: Disk quotas dquot_6.5.1 > Dquot-cache hash table entries: 1024 (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 > Couldn't stat "root_fs" : err = 2 > Failed to initialize ubd device 0 :Couldn't determine size of device's file > Choosing a random ethernet address for device eth0 > Netdevice 0 (0a:d4:37:a8:d3:ca) : TUN/TAP backend - > VFS: Cannot open root device "98:0" or unknown-block(98,0) > Please append a correct "root=" boot option; here are the available > partitions: > Kernel panic - not syncing: VFS: Unable to mount root fs on > unknown-block(98,0) > > EIP: 0073:[<00110402>] CPU: 0 Not tainted ESP: 007b:00114fc0 EFLAGS: > 00200246 > Not tainted > EAX: 00000000 EBX: 00001837 ECX: 00000013 EDX: 00001837 > ESI: 00001833 EDI: 00000011 EBP: 00114fd8 DS: 007b ES: 007b > 113a8e64: [<08069628>] show_regs+0xb4/0xb9 > 113a8e90: [<08057ca8>] panic_exit+0x25/0x3f > 113a8ea4: [<08078720>] notifier_call_chain+0x21/0x46 > 113a8ec4: [<080787bb>] __atomic_notifier_call_chain+0x17/0x19 > 113a8ee0: [<080787d2>] atomic_notifier_call_chain+0x15/0x17 > 113a8efc: [<0806daba>] panic+0x52/0xdd > 113a8f1c: [<08049af9>] mount_block_root+0x100/0x116 > 113a8f70: [<08049b5b>] mount_root+0x4c/0x54 > 113a8f94: [<08049c41>] prepare_namespace+0xde/0x10a > 113a8fa4: [<08049827>] kernel_init+0x79/0x85 > 113a8fb4: [<08063a39>] run_kernel_thread+0x37/0x42 > 113a8fe0: [<08058095>] new_thread_handler+0x57/0x7e > 113a8ffc: [<a55a5a5a>] 0xa55a5a5a > > Segmentation fault
