Re: [uml-devel] starting an 32 bit x86 chroot uml image at a ahrdened Gentoo amd64 system fails

[Richard Weinberger <richard.weinberger@gmail.com>]

On Sun, Mar 8, 2015 at 10:13 PM, Toralf Förster <toralf.foerster@gmx.de> wrote:
> Well, in fact, since I switched from x86 to amd64 under Gentoo, I never managed to get that chroot to be booted.
> During boot of the UML guest it just hangs around  "devtmpfs: mounted" w/o any output

Booting a chroot?!

> Today I decided to try  defconfig, and now I do get at least an output. Any hints how to continue ? :
>
>
> tfoerste@t44 ~/devel/linux $ start_uml.sh -r trinity
> + STTRACE=
> + /home/tfoerste/devel/linux/linux earlyprintk ubda=/home/tfoerste/virtual/uml/trinity ubdb=/mnt/ramdisk/trinity_swap eth0=tuntap,tap0,72:ef:3d:9f:c3:5a mem=1000M con0=fd:0,fd:1 con=pts umid=uml_trinity rootfstype=ext4 softlockup_all_cpu_backtrace=1
> 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
> bootconsole [earlycon0] enabled
> PID hash table entries: 4096 (order: 3, 32768 bytes)
> Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
> Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
> Memory: 1001892K/1024000K available (2481K kernel code, 619K rwdata, 772K rodata, 112K init, 156K bss, 22108K reserved, 0K cma-reserved)
> NR_IRQS:15
> Calibrating delay loop... 5599.23 BogoMIPS (lpj=27996160)
> pid_max: default: 32768 minimum: 301
> Mount-cache hash table entries: 2048 (order: 2, 16384 bytes)
> Mountpoint-cache hash table entries: 2048 (order: 2, 16384 bytes)
> Initializing cgroup subsys blkio
> Initializing cgroup subsys devices
> Initializing cgroup subsys freezer
> Checking that host ptys support output SIGIO...Yes
> Checking that host ptys support SIGIO on close...No, enabling workaround
> devtmpfs: initialized
> Using 2.6 host AIO
> NET: Registered protocol family 16
> Switched to clocksource itimer
> NET: Registered protocol family 2
> TCP established hash table entries: 8192 (order: 4, 65536 bytes)
> TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
> TCP: Hash tables configured (established 8192 bind 8192)
> TCP: reno registered
> UDP hash table entries: 512 (order: 2, 16384 bytes)
> UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
> NET: Registered protocol family 1
> console [stderr0] disabled
> mconsole (version 2) initialized on /home/tfoerste/.uml/uml_trinity/mconsole
> Checking host MADV_REMOVE support...OK
> futex hash table entries: 256 (order: 0, 6144 bytes)
> VFS: Disk quotas dquot_6.5.2
> VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
> io scheduler noop registered
> io scheduler deadline registered (default)
> TCP: cubic registered
> NET: Registered protocol family 17
> 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
> Netdevice 0 (72:ef:3d:9f:c3:5a) :
> TUN/TAP backend -
> winch_thread : TIOCSCTTY failed on fd 1 err = 1
> EXT4-fs (ubda): mounted filesystem with ordered data mode. Opts: (null)
> VFS: Mounted root (ext4 filesystem) readonly on device 98:0.
> devtmpfs: mounted
>
> Modules linked in:
> Pid: 1, comm: swapper Not tainted 4.0.0-rc2-00424-g1711fd9
> RIP: 0033:[<0000000060250abe>]
> RSP: 0000037066baff08  EFLAGS: 00010202
> RAX: 0000000060250aac RBX: 00000000606069a8 RCX: 00000370664d7b99
> RDX: 0000000060235550 RSI: 0000037066bb0fe8 RDI: 000000009e5b1000
> RBP: 0000037066bb0fe8 R08: 0000000000000000 R09: 0000000000000000
> R10: 000000009e019778 R11: 0000000000000246 R12: 000000009e5b1000
> R13: 0000037066bb0000 R14: 0000000060235a60 R15: 00000000602d95a8
> Kernel panic - not syncing: Segfault with no mm
> CPU: 0 PID: 1 Comm: swapper Not tainted 4.0.0-rc2-00424-g1711fd9 #1
> Stack:
>
> Modules linked in:
> Pid: 1, comm: swapper Not tainted 4.0.0-rc2-00424-g1711fd9
> RIP: 0033:[<00000000602388b1>]
> RSP: 0000000060573450  EFLAGS: 00010202
> RAX: 0000000000000006 RBX: 000000006049c25e RCX: 00000000606069a8
> RDX: 0000000000000000 RSI: 0000000060615338 RDI: 0000000000000000
> RBP: 0000000060573480 R08: 0000000060573059 R09: 000000006027e906
> R10: 0000000000000008 R11: 00000000003b91b9 R12: 0000037066baff0f
> R13: 0000000000000001 R14: 00000000605736f0 R15: 0000000000000001
> Kernel panic - not syncing: Segfault with no mm
> + rc=1
> + rm /mnt/ramdisk/trinity_swap
> + [[ 1 -ne 0 ]]
> ++ expr 1 % 128
> + RC=1
> + reset
> + exit 1
>
>
>
> --
> Toralf
> pgp key: 7B1A 07F4 EC82 0F90 D4C2  8936 872A E508 0076 E94E
>
>
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-- 
Thanks,
//richard

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news, videos, case studies, tutorials and more. Take a look and join the 
conversation now. http://goparallel.sourceforge.net/
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