This is my .config for the capture kernel.
CONFIG_KEXEC=y
CONFIG_CRASH_DUMP=y
CONFIG_PHYSICAL_START=0x2000000
I use crashkernel=64M at 32M.
Thanks
Soumendu
From: Soumendu Satapathy
Sent: Tuesday, February 23, 2010 11:07 AM
To: Kexec Mailing List
Subject: 2.6.18 Fedora core kernel gives: "Overlapping memory segments
at" error
Hi there,
When I use a 2.6.27 Fedora core I am able to load a capture kernel
properly and it boots when the first kernel crashes.
I am using a x86_64 platform and 2.6.27 Fedora core.
I use crashkernel=64M at 32M.
But when I use a 2.6.18 in the same environment and settings as above, I
get the following error when I load a capture kernel:-
"Overlapping memory segments at" error
"Sort segments failed"
I found that the kernel segments overlap when loading them in the 64M
memory reserved for the capture kernel. My system memory is MemTotal:
8037944 kB
I am using kexec-tools-2.0.1 and the "cat /proc/iomem" o/p is as
follows.
00000000-0009b3ff : System RAM
0009b400-0009ffff : reserved
000e4000-000fffff : reserved
00100000-cff6ffff : System RAM
00200000-006f0747 : Kernel code
006f0748-009b9b3f : Kernel data
00be2000-01219ea7 : Kernel bss
02000000-05ffffff : Crash kernel
cff70000-cff77fff : ACPI Tables
cff78000-cff7ffff : ACPI Non-volatile Storage
cff80000-cfffffff : reserved
d1000000-d11fffff : PCI Bus 0000:01
d1000000-d10fffff : PCI Bus 0000:02
d1000000-d107ffff : 0000:02:03.0
d1080000-d10fffff : 0000:02:03.1
d1100000-d11fffff : PCI Bus 0000:03
d1100000-d113ffff : 0000:03:02.0
d1140000-d117ffff : 0000:03:02.1
d1200000-d12fffff : PCI Bus 0000:04
d1200000-d12fffff : PCI Bus 0000:05
d1200000-d120ffff : 0000:05:04.0
d1300000-d13fffff : PCI Bus 0000:06
d1300000-d13fffff : PCI Bus 0000:07
d1300000-d130ffff : 0000:07:04.0
d1400000-d14fffff : PCI Bus 0000:09
d1400000-d141ffff : 0000:09:01.0
d1500000-d15003ff : 0000:00:1f.1
dd000000-dd000fff : 0000:00:01.0
dd001000-dd00100f : 0000:00:1d.4
dd001400-dd0017ff : 0000:00:1d.7
dd001400-dd0017ff : ehci_hcd
dd100000-dd3fffff : PCI Bus 0000:01
dd100000-dd100fff : 0000:01:00.1
dd101000-dd101fff : 0000:01:00.3
dd200000-dd2fffff : PCI Bus 0000:02
dd200000-dd201fff : 0000:02:03.0
dd202000-dd203fff : 0000:02:03.1
dd300000-dd3fffff : PCI Bus 0000:03
dd300000-dd300fff : 0000:03:02.0
dd301000-dd301fff : 0000:03:02.1
dd400000-dd4fffff : PCI Bus 0000:04
dd400000-dd4fffff : PCI Bus 0000:05
dd400000-dd40ffff : 0000:05:04.0
dd400000-dd40ffff : tg3
dd410000-dd41ffff : 0000:05:04.0
dd410000-dd41ffff : tg3
dd420000-dd42ffff : 0000:05:04.1
dd420000-dd42ffff : tg3
dd430000-dd43ffff : 0000:05:04.1
dd430000-dd43ffff : tg3
dd500000-dd5fffff : PCI Bus 0000:06
dd500000-dd5fffff : PCI Bus 0000:07
dd500000-dd50ffff : 0000:07:04.0
dd500000-dd50ffff : tg3
dd510000-dd51ffff : 0000:07:04.0
dd510000-dd51ffff : tg3
dd520000-dd52ffff : 0000:07:04.1
dd520000-dd52ffff : tg3
dd530000-dd53ffff : 0000:07:04.1
dd530000-dd53ffff : tg3
dd600000-dd6fffff : PCI Bus 0000:08
dd600000-dd61ffff : 0000:08:01.0
dd600000-dd61ffff : e1000
dd620000-dd63ffff : 0000:08:02.0
dd620000-dd63ffff : e1000
dd700000-deffffff : PCI Bus 0000:09
dd700000-dd700fff : 0000:09:01.0
de000000-deffffff : 0000:09:01.0
e0000000-efffffff : PCI MMCONFIG 0
e0000000-efffffff : reserved
fec00000-fec0ffff : reserved
fec00000-fec00fff : IOAPIC 0
fec10000-fec10fff : IOAPIC 1
fec80000-fec80fff : IOAPIC 2
fee00000-fee00fff : Local APIC
fee00000-fee00fff : reserved
ff800000-ffbfffff : reserved
fffffc00-ffffffff : reserved
100000000-22fffffff : System RAM
Could it be a bug in the Kexec?
thanks
Soumendu S Satapathy
Senior Software Developer
RELDATA Inc.
1719 Route 10, Suite 209
Parsippany, NJ 07054
(973) 644-2770 ext. 139 office
732-692-7230 mobile
(973) 644-3385 fax
soumendu.satapathy at reldata.com
www.reldata.com <http://www.reldata.com/>
Soumendu S Satapathy
Senior Software Developer
RELDATA Inc.
1719 Route 10, Suite 209
Parsippany, NJ 07054
(973) 644-2770 ext. 139 office
732-692-7230 mobile
(973) 644-3385 fax
soumendu.satapathy at reldata.com
www.reldata.com <http://www.reldata.com/>
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