I am using kexec and SYSRQ to boot up a "kdump" kernel on a Dual Xeon
system (and yes, I have SMP off on the second kernel per the
instructions in Documentation/kdump/kdump.txt). The second kernel that
I loaded with kexec is crashing on boot. Here is the output from the
serial console:
SysRq : Trigger a crashdump
I'm in purgatory
Linux version 2.6.13.1-kdump (root@freshair1) (gcc version 3.3.5 (Debian
1:3.3.5-13)) #5 Tue Sep 13 08:36:21 PDT 2005
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000100 - 000000000009b000 (usable)
BIOS-e820: 000000000009b000 - 00000000000a0000 (reserved)
BIOS-e820: 0000000000100000 - 00000000bff70000 (usable)
BIOS-e820: 00000000bff70000 - 00000000bff78000 (ACPI data)
BIOS-e820: 00000000bff78000 - 00000000bff80000 (ACPI NVS)
BIOS-e820: 00000000bff80000 - 00000000c0000000 (reserved)
BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved)
BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved)
BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
BIOS-e820: 00000000ff800000 - 00000000ffc00000 (reserved)
BIOS-e820: 00000000fffffc00 - 0000000100000000 (reserved)
user-defined physical RAM map:
user: 0000000000000000 - 00000000000a0000 (usable)
user: 0000000001000000 - 0000000001347000 (usable)
user: 00000000013e7400 - 0000000005000000 (usable)
0MB HIGHMEM available.
80MB LOWMEM available.
found SMP MP-table at 000f5d40
DMI present.
Intel MultiProcessor Specification v1.4
Virtual Wire compatibility mode.
OEM ID: INTEL Product ID: Lindenhurst APIC at: 0xFEE00000
Processor #0 15:3 APIC version 20
Processor #6 15:3 APIC version 20
WARNING: NR_CPUS limit of 1 reached. Processor ignored.
I/O APIC #2 Version 32 at 0xFEC00000.
I/O APIC #3 Version 32 at 0xFEC10000.
I/O APIC #4 Version 32 at 0xFEC80000.
I/O APIC #5 Version 32 at 0xFEC80400.
Enabling APIC mode: Flat. Using 4 I/O APICs
Processors: 1
Allocating PCI resources starting at 05000000 (gap: 05000000:fb000000)
Built 1 zonelists
Kernel command line: root=/dev/md0 init 1 irqpoll console=ttyS0,38400
memmap=exactmap memmap=640K@0K memmap=3356K@16384K memmap=61539K@20381K
elfcorehdr=20380K
Misrouted IRQ fixup and polling support enabled
This may significantly impact system performance
Initializing CPU#0
PID hash table entries: 512 (order: 9, 8192 bytes)
Detected 3001.041 MHz processor.
Using tsc for high-res timesource
Console: colour VGA+ 80x25
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 61268k/81920k available (2134k kernel code, 4104k reserved, 808k
data, 160k init, 0k highmem)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
Calibrating delay using timer specific routine.. 6008.19 BogoMIPS
(lpj=3004095)
Security Framework v1.0.0 initialized
Mount-cache hash table entries: 512
monitor/mwait feature present.
using mwait in idle threads.
CPU: Trace cache: 12K uops, L1 D cache: 16K
CPU: L2 cache: 1024K
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU0: Intel P4/Xeon Extended MCE MSRs (24) available
CPU0: Thermal monitoring enabled
mtrr: v2.0 (20020519)
CPU: Intel(R) Xeon(TM) CPU 3.00GHz stepping 04
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
------------[ cut here ]------------
kernel BUG at <bad filename>:65464!
invalid operand: 0000 [#1]
Modules linked in:
CPU: 0
EIP: 0060:[<c100fde6>] Not tainted VLI
EFLAGS: 00010246 (2.6.13.1-kdump)
EIP is at setup_local_APIC+0x26/0x180
eax: 00000000 ebx: 00050014 ecx: 00000000 edx: ffffffff
esi: 00000014 edi: c14c9fd4 ebp: 00000000 esp: c14c9f94
ds: 007b es: 007b ss: 0068
Process swapper (pid: 1, threadinfo=c14c8000 task=c14aba40)
Stack: c12ed809 c10141dd c14ab530 c1000290 00000000 c12edf89 c101cc6a
c14ab530
00000001 00000000 00000000 00000000 00000000 00000000 00000000
00000000
00000000 c10002ab 0000007b ffffffff c1000f88 c1000f8d 00000000
00000000
Call Trace:
[<c12ed809>] verify_local_APIC+0x69/0x120
[<c10141dd>] wake_up_process+0x1d/0x30
[<c1000290>] init+0x0/0x110
[<c12edf89>] APIC_init_uniprocessor+0xb9/0x120
[<c101cc6a>] cpu_callback+0xaa/0xb0
[<c10002ab>] init+0x1b/0x110
[<c1000f88>] kernel_thread_helper+0x0/0x18
[<c1000f8d>] kernel_thread_helper+0x5/0x18
Code: c3 8d 74 26 00 56 53 83 ec 0c 8b 1d 30 d0 ff ff a1 20 d0 ff ff 0f
b6 f3 c1 e8 18 83 e0 0f 0f a3 05 60 07 31 c1 19 c0 85 c0 75 02 <0f> 0b
b8 ff ff ff ff a3 e0 d0 ff ff a1 d0 d0 ff ff 25 ff ff ff
<0>Kernel panic - not syncing: Attempted to kill init!
Anyone have ideas why this is crashing? kernel config file available
upon request.
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