[Bug 321970] [NEW] linux-crashdump fails to record crash; reports memory not reserved

[Leigh L. Klotz, Jr.]

Public bug reported:

I'm attempting to isolate a consistent crash on an Intrepid (upgraded
from 8.04.1 LTS) using linux-crashdump and am not getting the dumps;
instead, I get an error message about memory not being reserved.  Indeed
/var/crash comes up empty after a crash.  dmesg and /proc/iomem results
are included.

Below are the steps I've taken and the results:

I installed linux-crashdump with directions from http://www.linux-
archive.org/ubuntu-development/113332-kernel-crash-dumps.html

After installing linux-crashdump (apparently renamed from linux-
crashdump-generic) I found I had to run update-grub; otherwise
/boot/grub/menu.lst had no changes.

On reboot, I get a message something like "memory was not reserved, please pass in crashkernel=X at Y".
I can't reproduce the exact message here because it doesn't appear in dmesg or log files.

Here is the kernel line that update-grub put in:

kernel		/boot/vmlinuz-2.6.27-9-generic root=UUID=67ca572c-8b92-4c8f-9508
-7af28eb5e653 ro quiet splash crashkernel=384M-2G:64M at 16M,2G-:128M at 16M

(A web search for the crashkernel string shows that it's pretty
widespread.)

Attached is the dmesg output (I have since added pci-nommconf to the
kernel line so you may see that in dmesg).

Here is the result of cat /proc/iomem.  I believe this shows no memory
is reserved.

00000000-0009f7ff : System RAM
0009f800-0009ffff : reserved
000a0000-000bffff : Video RAM area
000c0000-000cd1ff : Video ROM
000cd200-000cffff : pnp 00:0d
000e0000-000effff : pnp 00:0d
000f0000-000fffff : reserved
  000f0000-000fffff : System ROM
00100000-dfedffff : System RAM
  00100000-00383359 : Kernel code
  0038335a-004a567f : Kernel data
  00515000-005c0a1f : Kernel bss
dfee0000-dfee2fff : ACPI Non-volatile Storage
dfee3000-dfeeffff : ACPI Tables
dfef0000-dfefffff : reserved
e0000000-efffffff : PCI Bus 0000:01
  e0000000-efffffff : 0000:01:00.0
f0000000-f3ffffff : reserved
f4000000-f7ffffff : PCI Bus 0000:01
  f4000000-f5ffffff : 0000:01:00.0
  f6000000-f6ffffff : 0000:01:00.0
  f7000000-f701ffff : 0000:01:00.0
f8000000-f8ffffff : PCI Bus 0000:03
f9000000-faffffff : PCI Bus 0000:04
  fa000000-fa000fff : 0000:04:00.0
    fa000000-fa000fff : r8169
fb000000-fb0fffff : PCI Bus 0000:05
  fb000000-fb000fff : 0000:05:02.0
  fb001000-fb001fff : 0000:05:02.0
  fb002000-fb002fff : 0000:05:02.1
  fb003000-fb003fff : 0000:05:02.1
fb100000-fb103fff : 0000:00:1b.0
  fb100000-fb103fff : ICH HD audio
fb104000-fb1043ff : 0000:00:1d.7
  fb104000-fb1043ff : ehci_hcd
fb105000-fb1053ff : 0000:00:1a.7
  fb105000-fb1053ff : ehci_hcd
fb106000-fb1060ff : 0000:00:1f.3
fb200000-fb2fffff : PCI Bus 0000:04
  fb200000-fb21ffff : 0000:04:00.0
fec00000-ffffffff : reserved
  fed00000-fed003ff : HPET 0
  fee00000-fee00fff : Local APIC

** Affects: linux-meta (Ubuntu)
     Importance: Undecided
         Status: New

-- 
linux-crashdump fails to record crash; reports memory not reserved
https://bugs.launchpad.net/bugs/321970
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