On Wed, Apr 21, 2010 at 12:22, Sirisha Alla <sirisha.userli...@gmail.com> wrote: > Hi All, > > I am a newbie to UML. Been trying to bring up UML on x86_64bit > SuSe10.2 machine. My uml filesystem is in rootfs directory. While > running the kernel got a segmentation fault. Here is the output. The kernel is panicking because you didn't pass him a root file name config. Either you name your rootfs as "root_fs" or you pass a proper ubd0= config parameter (but I forgot the syntax). > Core dump limits : > > soft - 0 > > hard - NONE > > Checking that ptrace can change system call numbers...OK > > Checking syscall emulation patch for ptrace...missing > > Checking for tmpfs mount on /dev/shm...nothing mounted on /dev/shm > > Checking PROT_EXEC mmap in /tmp/...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 > > Linux version 2.6.31 (r...@sirisha) (gcc version 4.1.2 20070115 (SUSE > Linux)) #1 Thu Apr 22 15:28:55 EDT 2010 > > Built 1 zonelists in Zone order, mobility grouping on. Total pages: 32320 > > Kernel command line: rw hostdir=cluster_sim_uml > eth0=daemon,2:0:0:1:1:2,unix,/tmp/um > > l-0.ctl con0=fd:0,fd:1 con=pts mem=128M hostname=SC-2 > shadowroot=rootfs 4193 root=98:0 > > PID hash table entries: 512 (order: 9, 4096 bytes) > > Dentry cache hash table entries: 16384 (order: 5, 131072 bytes) > > Inode-cache hash table entries: 8192 (order: 4, 65536 bytes) > > Memory: 124300k available > > NR_IRQS:15 > > Calibrating delay loop... 104.65 BogoMIPS (lpj=523264) > > 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 > > bio: create slab <bio-0> at 0 > > NET: Registered protocol family 2 > > IP route cache hash table entries: 1024 (order: 1, 8192 bytes) > > TCP established hash table entries: 4096 (order: 4, 65536 bytes) > > TCP bind hash table entries: 4096 (order: 3, 32768 bytes) > > TCP: Hash tables configured (established 4096 bind 4096) > > TCP reno registered > > NET: Registered protocol family 1 > > IRQ 9/mconsole: IRQF_DISABLED is not guaranteed on shared IRQs > > mconsole (version 2) initialized on /root/.uml/SC-2/mconsole > > Checking host MADV_REMOVE support... > > MADV_REMOVE failed, err = -38 > > Can't release memory to the host - memory hotplug won't be supported > > VFS: Disk quotas dquot_6.5.2 > > Dquot-cache hash table entries: 512 (order 0, 4096 bytes) > > msgmni has been set to 243 > > io scheduler noop registered > > io scheduler anticipatory registered (default) > > io scheduler deadline registered > > io scheduler cfq registered > > TCP cubic registered > > NET: Registered protocol family 17 > > Initialized stdio console driver > > Console initialized on /dev/tty0 > > console [tty0] enabled > > Initializing software serial port version 1 > > Netdevice 0 (02:00:00:01:01:02) : daemon backend (uml_switch version > 3) - unix:/tmp/uml-0.ctl > > console [mc-1] enabled > > Couldn't stat "root_fs" : err = 2 > > Failed to initialize ubd device 0 :Couldn't determine size of device's file > > 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) > > Call Trace: > > 67825d88: [<6002d48b>] panic+0xd3/0x17b > > 67825da8: [<601200e3>] class_dev_iter_exit+0x9/0xb > > 67825df8: [<60056701>] __free_pages+0x17/0x20 > > 67825e18: [<6008773c>] sys_mount+0xb6/0xc8 > > 67825e28: [<600213be>] set_signals+0x1c/0x2e > > 67825e78: [<6000197d>] mount_block_root+0x246/0x264 > > 67825ee8: [<600019eb>] mount_root+0x50/0x54 > > 67825f08: [<60001b18>] prepare_namespace+0x129/0x14e > > 67825f18: [<60001424>] kernel_init+0xc7/0xd5 > > 67825f48: [<6002045d>] run_kernel_thread+0x41/0x4a > > 67825f58: [<6000135d>] kernel_init+0x0/0xd5 > > 67825f98: [<60020444>] run_kernel_thread+0x28/0x4a > > 67825fc8: [<6001255a>] new_thread_handler+0x67/0x91 > > > > Modules linked in: > > Pid: 1, comm: swapper Not tainted 2.6.31 > > RIP: 0033:[<00002b3fd2e8bea7>] > > RSP: 00007fffd7e6ba08 EFLAGS: 00000202 > > RAX: 0000000000000000 RBX: 0000000000001075 RCX: ffffffffffffffff > > RDX: 0000000000000000 RSI: 0000000000000013 RDI: 0000000000001075 > > RBP: 00007fffd7e6ba30 R08: 0000000000000000 R09: 00007fffd7e6ba30 > > R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000001070 > > R13: 000000000000000b R14: 00007fffd7e6c31a R15: 00007fffd7e6bd28 > > Call Trace: > > 67825d08: [<60014b7d>] panic_exit+0x2f/0x45 > > 67825d28: [<60042431>] notifier_call_chain+0x33/0x5b > > 67825d30: [<6001255a>] new_thread_handler+0x67/0x91 > > 67825d68: [<60042462>] __atomic_notifier_call_chain+0x9/0xb > > 67825d78: [<60042473>] atomic_notifier_call_chain+0xf/0x11 > > 67825d88: [<6002d49c>] panic+0xe4/0x17b > > 67825da8: [<601200e3>] class_dev_iter_exit+0x9/0xb > > 67825df8: [<60056701>] __free_pages+0x17/0x20 > > 67825e18: [<6008773c>] sys_mount+0xb6/0xc8 > > 67825e28: [<600213be>] set_signals+0x1c/0x2e > > 67825e78: [<6000197d>] mount_block_root+0x246/0x264 > > 67825ee8: [<600019eb>] mount_root+0x50/0x54 > > 67825f08: [<60001b18>] prepare_namespace+0x129/0x14e > > 67825f18: [<60001424>] kernel_init+0xc7/0xd5 > > 67825f48: [<6002045d>] run_kernel_thread+0x41/0x4a > > 67825f58: [<6000135d>] kernel_init+0x0/0xd5 > > 67825f98: [<60020444>] run_kernel_thread+0x28/0x4a > > 67825fc8: [<6001255a>] new_thread_handler+0x67/0x91 > > > > uname -a > > Linux sirisha 2.6.16.60-0.21-smp #1 SMP Tue May 6 12:41:02 UTC 2008 > x86_64 x86_64 x86_64 GNU/Linux > > > Your help is highly appreciated. > > Regards, > Sirisha > > ------------------------------------------------------------------------------ > _______________________________________________ > User-mode-linux-user mailing list > User-mode-linux-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user >
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