2.6.23.rt3 fails to boot on 8 way opteron

[Darren Hart <dvhltc@us.ibm.com>]

Steven, 

Per our discussion on irc, here is more context surrounding the crash.  The 
system boots fine with rt1 and the same .config.

Freeing unused kernel memory: 244k freed
Write protecting the kernel read-only data: 1156k
Red Hat nash version 5.1.19.6 starting
Mounting proc filesystem
Mounting sysfs filesystem
Creating /dev
Creating initial device nodes
Setting up hotplug.
Creating block dUSB Universal Host Controller Interface driver v3.0
evice nodes.
LoACPI: PCI Interrupt Link [LPUS] enabled at IRQ 5
ading uhci-hcd.kACPI: PCI Interrupt 0000:00:03.0[A] -> o module
LoadinLink [LPUS] -> g ohci-hcd.ko moGSI 5 (level, low) -> IRQ 5
dule
ohci_hcd 0000:00:03.0: OHCI Host Controller
ohci_hcd 0000:00:03.0: new USB bus registered, assigned bus number 1
ohci_hcd 0000:00:03.0: irq 5, io mem 0xf3fff000
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
ACPI: PCI Interrupt 0000:00:03.1[A] -> Link [LPUS] -> GSI 5 (level, low) -> 
IRQ 5
ohci_hcd 0000:00:03.1: OHCI Host Controller
ohci_hcd 0000:00:03.1: new USB bus registered, assigned bus number 2
ohci_hcd 0000:00:03.1: irq 5, io mem 0xf3ffe000
usb usb2: configuration #1 chosen from 1 choice
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
Loading ehci-hcdACPI: PCI Interrupt 0000:00:03.2[A] -> .ko module
Link [LPUS] -> GSI 5 (level, low) -> IRQ 5
ehci_hcd 0000:00:03.2: EHCI Host Controller
ehci_hcd 0000:00:03.2: new USB bus registered, assigned bus number 3
ehci_hcd 0000:00:03.2: irq 5, io mem 0xf3ffd000
ehci_hcd 0000:00:03.2: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004
usb usb3: configuration #1 chosen from 1 choice
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 4 ports detected
Loading jbd.ko module
Loading ext3.ko module
LSCSI subsystem initialized
oading scsi_mod.ko module
Loading sd_mod.ko module
Waiting for driver initialization.
usb 3-4: new high speed USB device using ehci_hcd and address 2
usb 3-4: configuration #1 chosen from 1 choice
hub 3-4:1.0: USB hub found
hub 3-4:1.0: 2 ports detected
Scanning and configuring dmraid Kernel panic - not syncing: Attempted to kill 
init!
supported device
s
Creating rootCall Trace:
 device.
Mounti [<ffffffff802380f3>] panic+0xaf/0x169
ng root filesyst [<ffffffff8024558f>] blocking_notifier_call_chain+0xf/0x11
em.
mount: coul [<ffffffff8023b733>] do_exit+0xb4/0x86a
d not find files [<ffffffff8023bf78>] sys_exit_group+0x0/0x14
ystem '/dev/root [<ffffffff8023bf8a>] sys_exit_group+0x12/0x14
'
Setting up ot [<ffffffff8020be9e>] system_call+0x7e/0x83
her filesystems.

Setting up new root fs
setuproot: moving /dev failed: No such file or directory
no fstab.sys, mounting internal defaults
setuproot: error mounting /proc: No such file or directory
setuproot: error mounting /sys: No such file or directory
Switching to new root and running init.
unmounting old /dev
unmounting old /proc
unmounting old /sys
switchroot: mount failed: No such file or directory

-- 
Darren Hart
IBM Linux Technology Center
Realtime Linux Team