/me wonders, why the same call few seconds later works (current git kernel), but not for the first time :
$ nice start_uml.sh -r trinity + /usr/local/bin/linux-v3.18-rc4 earlyprintk ubda=/home/tfoerste/virtual/uml/trinity ubdb=/mnt/ramdisk/trinity_swap eth0=tuntap,tap0,72:ef:3d:9f:c3:5a mem=2000M con0=fd:0,fd:1 con=pts umid=uml_trinity rootfstype=ext4 softlockup_all_cpu_backtrace=1 Locating the bottom of the address space ... 0x1000 Locating the top of the address space ... 0xc0000000 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 environment variables for a tempdir...none found Checking if /dev/shm is on tmpfs...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 28835840 bytes to physical memory to account for exec-shield gap Kernel virtual memory size shrunk to 953155584 bytes bootconsole [earlycon0] enabled PID hash table entries: 4096 (order: 2, 16384 bytes) Dentry cache hash table entries: 262144 (order: 8, 1048576 bytes) Inode-cache hash table entries: 131072 (order: 7, 524288 bytes) Memory: 2022804K/2076160K available (4848K kernel code, 310K rwdata, 1784K rodata, 118K init, 240K bss, 53356K reserved) SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 NR_IRQS:15 Calibrating delay loop... 2072.57 BogoMIPS (lpj=10362880) pid_max: default: 32768 minimum: 301 Mount-cache hash table entries: 4096 (order: 2, 16384 bytes) Mountpoint-cache hash table entries: 4096 (order: 2, 16384 bytes) Checking for host processor cmov support...Yes Checking that host ptys support output SIGIO...tty_output : read failed, err = -1 Checking that host ptys support SIGIO on close...No, enabling workaround devtmpfs: initialized Using 2.6 host AIO xor: measuring software checksum speed 8regs : 2519.200 MB/sec 8regs_prefetch: 2843.600 MB/sec 32regs : 1999.200 MB/sec 32regs_prefetch: 1238.400 MB/sec xor: using function: 8regs_prefetch (2843.600 MB/sec) prandom: seed boundary self test passed prandom: 100 self tests passed NET: Registered protocol family 16 raid6: int32x1 235 MB/s raid6: int32x2 292 MB/s raid6: int32x4 188 MB/s raid6: int32x8 183 MB/s raid6: using algorithm int32x2 (292 MB/s) raid6: using intx1 recovery algorithm Switched to clocksource itimer NET: Registered protocol family 2 TCP established hash table entries: 16384 (order: 4, 65536 bytes) TCP bind hash table entries: 16384 (order: 6, 327680 bytes) TCP: Hash tables configured (established 16384 bind 16384) TCP: reno registered UDP hash table entries: 1024 (order: 3, 49152 bytes) UDP-Lite hash table entries: 1024 (order: 3, 49152 bytes) NET: Registered protocol family 1 RPC: Registered named UNIX socket transport module. RPC: Registered udp transport module. RPC: Registered tcp transport module. RPC: Registered tcp NFSv4.1 backchannel transport module. console [stderr0] disabled mconsole (version 2) initialized on /home/tfoerste/.uml/uml_trinity/mconsole Checking host MADV_REMOVE support...OK UML Audio Relay (host dsp = /dev/sound/dsp, host mixer = /dev/sound/mixer) Host TLS support detected Detected host type: i386 (GDT indexes 6 to 9) futex hash table entries: 256 (order: 0, 7168 bytes) audit: initializing netlink subsys (disabled) audit: type=2000 audit(1416416597.671:1): initialized zpool: loaded zbud: loaded NFS: Registering the id_resolver key type Key type id_resolver registered Key type id_legacy registered nfs4filelayout_init: NFSv4 File Layout Driver Registering... Installing knfsd (copyright (C) 1996 o...@monad.swb.de). msgmni has been set to 3950 alg: No test for stdrng (krng) Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254) io scheduler noop registered (default) loop: module loaded device-mapper: uevent: version 1.0.3 device-mapper: ioctl: 4.28.0-ioctl (2014-09-17) initialised: dm-de...@redhat.com TCP: cubic registered NET: Registered protocol family 10 sit: IPv6 over IPv4 tunneling driver NET: Registered protocol family 17 Key type dns_resolver registered Initialized stdio console driver Console initialized on /dev/tty0 console [tty0] enabled console [tty0] enabled bootconsole [earlycon0] disabled bootconsole [earlycon0] disabled Initializing software serial port version 1 console [mc-1] enabled Failed to initialize ubd device 0 :Couldn't determine size of device's file ubdb: unknown partition table Netdevice 0 (72:ef:3d:9f:c3:5a) : TUN/TAP backend - Btrfs loaded winch_thread : TIOCSCTTY failed on fd 1 err = 1 VFS: Cannot open root device "98:0" or unknown-block(98,0): error -6 Please append a correct "root=" boot option; here are the available partitions: 6210 262144 ubdb driver: uml-blkdev Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(98,0) CPU: 0 PID: 1 Comm: swapper Not tainted 3.18.0-rc4 #12 Stack: 085c8b17 085c8b17 086f8547 085068c1 fffffffa 864aff40 864afef8 08509f65 00000000 864afed0 864aff20 085060bd 085d4920 08739180 085c5be0 864aff30 00000000 fffffffa 864aff40 00008001 864aff6c 08048f9d 085c5be0 864aff40 Call Trace: [<085068c1>] ? printk+0x38/0x3a [<08060ae9>] show_stack+0x119/0x180 [<085068c1>] ? printk+0x38/0x3a [<08509f65>] dump_stack+0x26/0x28 [<085060bd>] panic+0x8f/0x1a9 [<08048f9d>] mount_block_root+0x1e0/0x261 [<0811bea8>] ? SyS_mknod+0x28/0x30 [<0804907e>] mount_root+0x60/0x66 [<080491c3>] prepare_namespace+0x13f/0x185 [<08048cb2>] kernel_init_freeable+0x190/0x19d [<0804821f>] ? repair_env_string+0x0/0x91 [<0850493b>] kernel_init+0xb/0xe0 [<0805f69b>] new_thread_handler+0x6b/0x90 -- Toralf pgp key: 0076 E94E ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel