Re: Fwd: -rt and PowerPC

[Chirag Jog <chirag@linux.vnet.ibm.com>]

* sven@thebigcorporation.com <sven@thebigcorporation.com> [2007-12-24 13:00:30]:

Hi,
> Do you have DEBUG and LOCKDEP configured?
CONFIG_PREEMPT_DEBUG is enabled
but LOCKDEP is not.
> Sven
> Sent via BlackBerry by AT&T
> 
> -----Original Message-----
> From:	Sripathi Kodi <sripathik@in.ibm.com>
> 
> Date:	Mon, 24 Dec 2007 11:40:00 
> To:linux-rt-users@vger.kernel.org
> Cc:Chirag Jog <chirag@linux.vnet.ibm.com>
> Subject: Fwd: -rt and PowerPC
> 
> 
> Hi,
> 
> Chirag sent the following mail 3 times to linux-rt-users, but it doesn't seem 
> to be working. Hence trying from my id.
> 
> Thanks,
> Sripathi.
> 
> ----------  Forwarded Message  ----------
> 
> Subject: -rt and PowerPC
> Date: Monday 24 December 2007 10:30
> From: Chirag Jog <chirag@linux.vnet.ibm.com>
> To: linux-rt-users <linux-rt-users@vger.kernel.org>
> Cc: Sripathi Kodi <sripathik@in.ibm.com>, Dinakar Guniguntala 
> <dino@in.ibm.com>
> 
> Hi,
>     We are trying to get a ppc64 box booted with the -rt kernel.
> 
>     Tried the latest 2.6.24-rc5-rt1 kernel.
> 
>     Everything goes well [ kernel boots up etc] until the services
>     start coming up.
>     It takes a lot of time at Starting udev.
>     After which either services take too long to start or we get
>     SEGFAULT.
> 
>     This is easily reproducible. Also if we get a chance to login;
>     simple commands like ls, vi etc take either too long or get
>     SEGFAULT.
> 
>     Booting the kernel with maxcpus=1 or turning off SMP, doesn't
>     solve the problem.
> 
>     Here is logs from one of the booting sequences:
> 
> Linux version 2.6.24-rc5-rt1 (root@llm29) (gcc version 4.1.0 (SUSE Linux)) #1
>  SMP PREEMPT RT Thu Dec 20 13:41:45 IST 2007 [boot]0012 Setup Arch
> PPC64 nvram contains 16384 bytes
> Zone PFN ranges:
>   DMA             0 ->  1024000
>   Normal    1024000 ->  1024000
> Movable zone start PFN for each node
> early_node_map[1] active PFN ranges
>     0:        0 ->  1024000
> [boot]0015 Setup Done
> Real-Time Preemption Support (C) 2004-2007 Ingo Molnar
> Built 1 zonelists in Node order, mobility grouping on.  Total pages: 1000000
> Policy zone: DMA
> Kernel command line: root=/dev/hda2  quiet sysrq=1 askmethod
> Starting udevd
> Creating devices
> Waiting for device /dev/hda2 to appear:  ok
> rootfs: major=3 minor=2 devn=770
> fsck 1.38 (30-Jun-2005)
> [/bin/fsck.ext3 (1) -- /] fsck.ext3 -a /dev/hda2
> /dev/hda2: clean, 249426/1311552 files, 1860112/2622611 blocks
> fsck succeeded. Mounting root device read-write.
> Mounting root /dev/hda2
> INIT: version 2.86 booting
> System Boot Control: Running /etc/init.d/boot
> Mounting procfs at /proc                                              done
> Mounting sysfs at /sys                                                done
> Mounting debugfs at /sys/kernel/debug                                 done
> Initializing /dev                                                     done
> Mounting devpts at /dev/pts                                           done
> Activating swap-devices in /etc/fstab...                              done
> showconsole: Warning: the ioctl TIOCGDEV is not known by the kernel
> Starting udevd udevd-event[2463]: run_program: '/bin/sh' abnormal exit
> udevd-event[2474]: run_program: '/sbin/vol_id' abnormal exit
> udevd-event[2477]: run_program: '/sbin/vol_id' abnormal exit
> udevd-event[2455]: run_program: '/sbin/ifup' abnormal exit
> udevd-event[2477]: run_program: '/lib/udev/mount.sh' abnormal exit
> 
> 
> 
> 
>                                                                       failed
> Loading required kernel modules                                       done
> Activating device mapper...
> FATAL: Module dm_mod not found.
>                                                                       failed
> Starting MD Raid                                                      done
> Waiting for udev to settle...
> Scanning for LVM volume groups...
>   Reading all physical volumes.  This may take a while...
>   No volume groups found
>   No volume groups found
> Activating LVM volume groups...
>   No volume groups found
>                                                                       done
> showconsole: Warning: the ioctl TIOCGDEV is not known by the kernel
> Checking file systems...
> fsck 1.38 (30-Jun-2005)
> Checking all file systems.
> [/sbin/fsck.ext3 (1) -- /home] fsck.ext3 -a /dev/hda5
> /dev/hda5: clean, 460612/1836928 files, 2774880/3670844 blocks
> [/sbin/fsck.ext3 (1) -- /home/mohan/mnt] fsck.ext3 -a /dev/hda3
> /dev/hda3: clean, 362719/1311552 files, 1651440/2622611 blocks
> *** glibc detected *** /bin/sh: free(): invalid pointer: 0x100a5170 ***
> ======= Backtrace: =========
> /lib/power4/libc.so.6[0xfde4be4]
> /lib/p/lib/apparmor/rc.apparmor.functions: line 87:  2603 Segmentation fault 
>      grep -q securityfs /proc/filesystems
>  /lib/apparmor/rc.apparmor.functions: line 355:  2606 Aborted                
>  grep -qE "^(subdomain|apparmor)[[:space:]]" /proc/modules
>  /lib/apparmor/rc.apparmor.functions: line 318:  2610 Segmentation fault     
>  modinfo -F filename subdomain >/dev/null 2>&1
>  /lib/apparmor/rc.apparmor.functions: line 318:  2613 Segmentation fault     
>  grep -qE "^(subdomain|apparmor)[[:space:]]" /proc/modules FATAL: Module
>  apparmor not found.
> Loading AppArmor module failed
> - could not start AppArmorfailed
> /etc/init.d/boot.cleanup: line 23:  2601 Segmentation fault      rm -f
>  /var/lib/rpm/__db* /etc/init.d/boot.cleanup: line 23:  2602 Segmentation
>  fault      rm -rf /tmp/screens /tmp/uscreens /var/run/screens
>  /var/run/uscreens 2>/dev/null /etc/init.d/boot.cleanup: line 23:  2605
>  Segmentation fault      rm -f /tmp/.X*lock /var/spool/uucp/LCK*
>  /var/log/sa/sadc.LOCK /fsck_corrected_errors 2>/dev/null
>  /etc/init.d/boot.cleanup: line 23:  2608 Segmentation fault      find
>  /tmp/ssh-* -type s -name "*agent*" -maxdepth 1 -print0 2>/dev/null 2609     
>                   | xargs -0 -r rm -f
> /etc/init.d/boot.cleanup: line 23:  2611 Segmentation fault      find
>  /var/run /var/lock -type f -print0 2612                       | xargs -0 -r
>  rm -f 2>/dev/null
> /etc/init.d/boot.cleanup: line 23:  2615 Segmentation fault      chmod 664
>  /var/run/utmp /etc/init.d/boot.cleanup: line 23:  2616 Segmentation fault   
>    chown root:tty /var/run/utmp /etc/init.d/boot.cleanup: line 23:  2617
>  Segmentation fault      ls /etc/resolv.conf.saved.by.* >&/dev/null
>  /etc/init.d/boot.cleanup: line 75:  2618 Segmentation fault      chown
>  root:root $CURDIR /etc/init.d/boot^[[6~.cleanup: line 75:  2619 Segmentation
>  fault      chown root:root $CURDIR /etc/init.d/boot.cleanup: line 75:  2620
>  Segmentation fault      chown root:root $CURDIR /etc/init.d/boot.cleanup:
>  line 75:  2621 Segmentation fault      chown root:root $CURDIR
>  /etc/init.d/boot.cleanup: line 75:  2622 Segmentation fault      chown
>  root:root $CURDIR /etc/init.d/boot.cleanup: line 75:  2623 Segmentation
>  fault      c^[[6~hown root:root $CURDIR /etc/init.d/boot.cleanup: line 82: 
>  2624 Segmentation fault      chown root:root $CURDIR
>  /etc/init.d/boot.cleanup: line 23:  2625 Segmentation fault      rm -f
>  /etc/psdevtab /etc/init.d/boot.cleanup: line 23:  2626 Segmentation fault   
>    /bin/ps >/dev/null 2>/dev/null No such file or directory
> No such file or directory
> No such file or directory
> No such file or directory
> No such file or directory
> No such file or directory
> System Boot Control: The system has been                              set up
> Failed features: boot.udev boot.localfs boot.clock boot.klog boot.scpm
>  boot.crypto boot.localnet boot.swap boot.udev_retry boot.ldconfig
>  boot.sysctl boot.ipconfig System Boot Control: Running
>  /etc/init.d/boot.local                   done INIT: Entering runlevel: 3
> EXT3-fs error (device hda2): ext3_add_entry: bad entry in directory #971592:
>  rec_len % 4 != 0 - offset=0, inode=9349464, rec_len=54811, name_len=129
>  blogd: can not open /var/run/blogd.pid: Input/output error
> Boot logging started on /dev/hvc0(/dev/console) at Thu Dec 20 14:19:34 2007
> Master Resource Control: previous runlevel: N, switching to runlevel: 3
> Master Resource Control: runlevel 3 has been                          reached
> /etc/init.d/rc: line 383:  2669 Illegal instruction     killproc -QUIT
>  /sbin/blogd Segmentation fault
> /bin/bash: error while loading shared libraries: �\x1a\x14\x7fC�x\x7f��\x14H: cannot
>  open shared object file: No such file or directory INIT: Id "cons"
>  respawning too fast: disabled for 5 minutes
> 
> CPU Info:
>  # cat /proc/cpuinfo
> processor       : 0
> cpu             : PPC970, altivec supported
> clock           : 1600.000000MHz
> revision        : 2.2 (pvr 0039 0202)
> 
>         processor       : 1
>         cpu             : PPC970, altivec supported
>         clock           : 1600.000000MHz
>         revision        : 2.2 (pvr 0039 0202)
> 
>         timebase        : 199836440
>         platform        : pSeries
>         machine         : CHRP IBM,8842-21X
> 
> Also Attached is the config file:
> 
> --
> Cheers,
> Chirag Jog
> 
> 
> --
> Cheers,
> Chirag Jog
> 
> -------------------------------------------------------
> 

-- 
Cheers,
Chirag Jog