On Thursday 25 January 2007 20:36, Maren Peasley wrote: > Hello Blaisorblade, > > I built a new kernel - boot process seems friendlier, but the kernel > hangs as soon as I run "/sbin/ifconfig eth0 up". It gives a message: > > uml_net: relocation error: uml_net: symbol gnu_dev_makedev, version > GLIBC_2.3.3 not defined in file libc.so.6 with link time reference
The kernel shouldn't hang anyway, but this should mean that on your _host_ (i.e. outside UML) you have a broken uml_net (it was compiled against a given glibc, but is running against an older one). Additionally, your host is missing a symbol declared as "GLIBC_2.3.3", which means it has a glibc older than 2.3.3 (or that it hasn't glibc at all). If what I said is reasonable, you should recompile uml_utilities from sources on your host. And in case you wonder, there's no possibility that uml_net is being run inside the guest (i.e. inside UML). > My procedure has been: Given the above error, I've not proof-read the below procedure... I've given a quick look. > 1) Load existing UML guest, > 2) Copy /proc/config.gz to /home/dsl/config.gz > 3) halt the UML guest > 4) Mount DSL-2.2-root_fs via /dev/loop0 on /mnt/r1/ > 5) Copy /mnt/r1/home/dsl/config.gz to /home/dsl/r1/config.gz > 6) Download, on another system, linux-2.6.19.2, unpack this. > 7) Run make mrproper > 8) scp /home/dsl/r1/config.gz on the DSL host to this other machine, > in the linux-2.6.19.2 directory as "config_uml.gz". > 9) Unpack "config_uml.gz" and rename ".config" > 10) Run "make ARCH=um oldconfig; make ARCH=um" > 11) Verify that resulting "linux" file is an ELF > 12) scp executable "linux" back to UML host Note that normally you must be careful (a binary compiled with a given glibc requires at least that). UML is often statically linked, and in that case (unless you enable pcap transport or anything using NSS, i.e. networking) that shouldn't be a problem. > 13) Run "make ARCH=um modules", then "make ARCH=um modules_install" on > the other machine > 14) Tar /lib/modules/2.6.19.2 into /lib/modules/2.6.19.2.tar > 15) scp /lib/modules/2.6.19.2.tar into UML host > 16) Remount DSL-2.2-root_fs via procedure used in steps 4 and 5 > 17) Copy in /lib/modules/2.6.19.2.tar to /lib/modules/2.6.19.tar You should have untarred this tarball - I guess _that_ was #17 in your procedure, wasn't it? > 18) Run in UML host: /home/dsl/r1/linux ubda=DSL-2.2-root_fs mem=128M > eth=tuntap,,,10.11.12.13 2>&1 | tee output.txt > 19) Wait until kernel freeze > 20) Use separate shell in UML host to identify and kill running linux > instance 21) scp output.txt to other machine > 22) Run: "cat output.txt | sed 's/^[[^m]*m//g' | sed 's/^H//g' > out2.txt" > 23) out2.txt follows, ends with "END UML OUTPUT" > > 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 > - PTRACE_FAULTINFO...not found > - PTRACE_LDT...not found > UML running in SKAS0 mode > Linux version 2.6.19.2 ([EMAIL PROTECTED]) (gcc version 4.0.3 > (Ubuntu 4.0.3-1ubuntu5)) #1 Thu Jan 25 06:53:44 PST 2007 > Built 1 zonelists. Total pages: 32512 > Kernel command line: ubda=DSL-2.2-root_fs mem=128M > eth0=tuntap,,,10.11.12.13 root=98:0 > PID hash table entries: 512 (order: 9, 2048 bytes) > Dentry cache hash table entries: 16384 (order: 4, 65536 bytes) > Inode-cache hash table entries: 8192 (order: 3, 32768 bytes) > Memory: 126848k 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 > aio_thread failed to initialize context, err = 38 > 2.6 AIO not supported on the host - reverting to 2.4 AIO > 2.6 host AIO support not used - falling back to I/O thread > NET: Registered protocol family 16 > NET: Registered protocol family 2 > IP route cache hash table entries: 1024 (order: 0, 4096 bytes) > TCP established hash table entries: 4096 (order: 2, 16384 bytes) > TCP bind hash table entries: 2048 (order: 1, 8192 bytes) > TCP: Hash tables configured (established 4096 bind 2048) > TCP reno registered > Checking host MADV_REMOVE support...MADV_REMOVE failed, err = -22 > Can't release memory to the host - memory hotplug won't be supported > mconsole (version 2) initialized on /home/dsl/.uml/Owe0t4/mconsole > Netdevice 0 (2a:93:e5:15:4e:b9) : TUN/TAP backend - IP = 10.11.12.13 > Host TLS support NOT detected! TLS support inside UML will not work > 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 > ubda: unknown partition table > EXT3-fs: INFO: recovery required on readonly filesystem. > EXT3-fs: write access will be enabled during recovery. > kjournald starting. Commit interval 5 seconds > EXT3-fs: recovery complete. > EXT3-fs: mounted filesystem with ordered data mode. > VFS: Mounted root (ext3 filesystem) readonly. > line_ioctl: tty0: ioctl KDSIGACCEPT called > > INIT: version 2.78-knoppix booting > > > hwclock: Could not access RTC: No such file or directory > > Running Linux Kernel 2.6.19.2. > > Running from HD, checking filesystems... > > Activating swap... > > Checking root file system... > > fsck 1.34-WIP (21-May-2003) > > /dev/ubda: clean, 11915/51200 files, 146239/204800 blocks > > EXT3 FS on ubda, internal journal > Checking all file systems... > > fsck 1.34-WIP (21-May-2003) > > Running from HD, regenerate ld.so.cache and modules.dep... > > Processor 0 is UML > > Autoconfiguring devices... /-\|/-\ |/-\|/-\ |/-\|/-\ |/-\|/-\ |/-\|/-\ > > |/-\|/-\ |/-\|/-\ |/-\|/-\ |/-\|/-\ |/-\|/-\ |/-\|/-\ |/-\|/-\ > |/-\|/-\ |/-\|/-\ |/-\|/-\ |/-\|/-\ |/-\|/-\ |/-\|/-\ |/-\|/-\ > |/-\|/-\ |/-\|/-\ |/-\|/-\ |/-\|/-\ |/-\|/-\ |/-\|/-\ |/-\|/-\ > |/-\|/-\ |/- Done. > > Couldnt get a file descriptor referring to the console > > Skipping DMA accelleration as requested on boot commandline. > > Scanning for Harddisk partitions and creating /etc/fstab... Done. > > Network device eth0 detected, DHCP broadcasting for IP.uml_net: > relocation error: uml_net: symbol gnu_dev_makedev, version GLIBC_2.3.3 > not defined in file libc.so.6 with link time reference > Checking that ptrace can change system call numbers...OK > Checking syscall emulation patch for ptrace...missing > > > END UML OUTPUT > > Observations: I didn't find any more /lib/module errors, but I this > time the kernel hangs - anything that I am doing wrong? Is there > anything that I should do otherwise? -- Inform me of my mistakes, so I can add them to my list! Paolo Giarrusso, aka Blaisorblade http://www.user-mode-linux.org/~blaisorblade Chiacchiera con i tuoi amici in tempo reale! http://it.yahoo.com/mail_it/foot/*http://it.messenger.yahoo.com ------------------------------------------------------------------------- Take Surveys. Earn Cash. 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