Created attachment 325113 [details]
Screenshot of boot screen

Description of problem:

I've been running some 64 bit virtual machines using Workstation 6 for quite some time now. With the 2 most reccent kernel updates, I'm getting kernel panics early in the boot process. The same happens if I try to install a 64 bit FC10. FC9 works fine when booting with an older kernel such as 2.6.26.6-79.fc9.x86_64

I tried booting the FC10 install on the bare metal, and it seems to boot fine. The host machine is a dual Opteron 250.

Version-Release number of selected component (if applicable):

FC9 Kernels 2.6.27.5-41.fc9.x86_64 2.6.27.5-37.fc9.x86_64
FC10 kernel 2.6.27.5-117.fc10.x86_64

How reproducible:
Consistently


Steps to Reproduce:
1. Boot with indicated kernels
  
Actual results:
Command line: initrd=initrd.img earlyprintk=vga vga=1 BOOT_IMAGE=vmlinuz
KERNEL supported cpus:
  Intel GenuineIntel
  AMD AuthenticAMD
  Centaur CentaurHauls
BIOS-provided physical RAM map:
 BIOS-e820:  0000000000000000 - 000000000009f800 (usable)
 BIOS-e820:  000000000009f800 - 00000000000a0000 (reserved)
 BIOS-e820:  00000000000ca000 - 00000000000cc000 (reserved)
 BIOS-e820:  00000000000dc000 - 0000000000100000 (reserved)
 BIOS-e820:  0000000000100000 - 000000003fef0000 (usable)
 BIOS-e820:  000000003fef0000 - 000000003feff000 (ACPI data)
 BIOS-e820:  000000003feff000 - 000000003ff00000 (ACPI NVS)
 BIOS-e820:  000000003ff00000 - 0000000040000000 (usable)
 BIOS-e820:  00000000fec00000 - 00000000fec10000 (reserved)
 BIOS-e820:  00000000fee00000 - 00000000fee01000 (reserved)
 BIOS-e820:  00000000fffe0000 - 0000000100000000 (reserved)
console [earlyvga0] enabled
last pfn = 0x40000 max_arch_pfn = 0x3ffffffff
x86 FAT enabled: cpu 0, old 0x0, new 0x7010600070106
init-memory-mapping
last_map_addr: 40000000 end: 40000000
RAMDISK: 3ede0000 - 3fecfde0
DMI present.
PANIC: early exception 0e rip 10:ffffffff815c986d error 0 cr2 fffffffeff34003d
Pid: 0, comm: swapper Not tainted 2.6.27.5-117.fc10.x86_64 #1

Call Trace:
 [<ffffffff8159d19e>] early_idt_handler+0x5e/0x72
 [<ffffffff815c986d>] ? dmi_string_nosave+0x44/0x90
 [<ffffffff815c989c>] ? dmi_string_nosave+0x73/0x90
 [<ffffffff815c98cb>] dmi_string+0x12/0x7d
 [<ffffffff810423a8>] ? vprintk+0x30b/0x33b
 [<ffffffff815c9959>] dmi_save_ident+0x23/0x35
 [<ffffffff815c9a8e>] dmi_decode+0x77/0x464
 [<ffffffff810423a8>] ? vprintk+0x30b/0x33b
 [<ffffffff8131f572>] ? init_memory_mapping+0x5c7/0x5dc
 [<ffffffff812873dd>] dmi_table+0x71/0x82
 [<ffffffff815c9a17>] ? dmi_decode+0x0/0x464
 [<ffffffff8159d140>] ? early_idt_handler+0x0/0x72
 [<ffffffff815c9731>] dmi_present+0x108/0x127
 [<ffffffff815c97e0>] dmi_scan_machine+0x90/0xd9
 [<ffffffff815a4f68>] setup_arch+0x594/0x76b
 [<ffffffff81331deb>] ? _spin_lock+0xa/0xc
 [<ffffffff8159da34>] start_kernel+0x8d/0x3aa
 [<ffffffff8159d2ba>] x86_64_start_reservations+0xa5/0xa9
 [<ffffffff8159d3ae>] x86_64_start_kernel+0xcd/0xdc

RIP 0x10


Expected results:


Additional info:
/proc/cpuinfo (from virtual machine)
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 37
model name      : AMD Opteron(tm) Processor 250
stepping        : 1
cpu MHz         : 2395.080
cache size      : 1024 KB
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt lm 3dnowext 3dnow
 up rep_good pni
bogomips        : 4794.13
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management: ts fid vid ttp