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Sparc : the kernel from the debian-installer oops here :'(

Hi everyone,

	I'm experiencing a problem using the stable debian installer on two
different kinds of hardware (Both computers are manufactured by Sun).
	The bootloader (Slilo) is working nicely, but then the kernel crashes
while loading.
-On the first computer it says "Unable to allocate enough continuous
memory" ... even with a bootparameter 'mem=512m' whereas it has 16G of RAM!
-On the second one, it oopses (see apendix).

	Both box were running Solaris without any problem... Though I'm not
sure of the CD : md5sum says it is ok (but done on a different box) so
it MIGHT be a cdrom reader related problem... But I don't think so.

	Any suggestion ?

Thanks in advance, Regards.


PS: Please CC me in your responses as I'm not on the list.
I'm using this ISO :

ok boot cdrom
Boot device: /pci@1f,0/pci@1,1/ide@3/cdrom@2,0:f  File and args:      
SILO Version 1.4.9
boot: rescue
Allocated 8 Megs of memory at 0x40000000 for kernel
Loaded kernel version 2.4.27
Loading initial ramdisk (3041649 bytes at 0x17C02000 phys, 0x40C00000 virt)...
Remapping the kernel... Booting Linux...
PROMLIB: Sun IEEE Boot Prom 3.11.9 1998/03/06 10:31
Linux version 2.4.27-2-sparc64 (joshk@fortissimo.triplehelix.org) (gcc version 3.3.5 (Debian
 1:3.3.5-8)) #1 Mon Feb 14 19:11:37 PST 2005
 Ethernet address: 08:00:20:9c:a0:84
 On node 0 totalpages: 15500
 zone(0): 16281 pages.
 zone(1): 0 pages.
 zone(2): 0 pages.
 Found CPU 0 (node=f006cb88,mid=0)
 Found 1 CPU prom device tree node(s).
 Kernel command line: root=/dev/rd/0 init=/bin/sh
 Calibrating delay loop... 598.01 BogoMIPS
 Memory: 122432k available (1880k kernel code, 296k data, 160k init) [fffff80000000000,000000
 Dentry cache hash table entries: 16384 (order: 5, 262144 bytes)
 Inode cache hash table entries: 8192 (order: 4, 131072 bytes)
 Mount cache hash table entries: 512 (order: 0, 8192 bytes)
 Buffer cache hash table entries: 1024 (order: 0, 8192 bytes)
 Page-cache hash table entries: 16384 (order: 4, 131072 bytes)
 POSIX conformance testing by UNIFIX
 PCI: Probing for controllers.
 PCI: Found SABRE, main regs at 000001fe00000000, wsync at 000001fe00001c20
 SABRE: Shared PCI config space at 000001fe01000000
 SABRE: DVMA at c0000000 [20000000]
 PCI0(PBMA): Bus running at 33MHz
 PCI-IRQ: Routing bus[ 1] slot[ 1] map[0] to INO[21]
 PCI-IRQ: Routing bus[ 1] slot[ 2] map[0] to INO[0f]
 PCI-IRQ: Routing bus[ 1] slot[ 3] map[0] to INO[20]
 PCI0(PBMB): Bus running at 33MHz
 ebus0: [auxio] [power] [SUNW,pll] [se] [su] [su] [ecpp] [fdthree] [eeprom] [flashprom] [SUNW
 PCIO serial driver version 1.54
 su(mouse) at 0x1fff13062f8 (irq = 4,7ea) is a 16550A
 Sun Mouse-Systems mouse driver version 1.00
 su(kbd) at 0x1fff13083f8 (irq = 9,7e9) is a 16550A
 keyboard: not present
 SAB82532 serial driver version 1.65
 ttyS00 at 0x1fff1400000 (irq = 12,7eb) is a SAB82532 V3.2
 ttyS01 at 0x1fff1400040 (irq = 12,7eb) is a SAB82532 V3.2
 Console: ttyS0 (SAB82532)
 power: Control reg at 000001fff1724000 ... powerd running.
 Linux NET4.0 for Linux 2.4
 Based upon Swansea University Computer Society NET3.039
 Initializing RT netlink socket
 Starting kswapd
 VFS: Disk quotas vdquot_6.5.1
 alloc_area_pte: page already exists
 alloc_area_pte: page already exists
 alloc_area_pte: page already exists
 alloc_area_pte: page already exists
 alloc_area_pte: page already exists
 alloc_area_pte: page already exists
 Unable to handle kernel NULL pointer dereference in mna handler<1> at virtual address 000000
 current->{mm,active_mm}->context = 0000000000000000
 current->{mm,active_mm}->pgd = fffff80017010c00
               \|/ ____ \|/
	                     "@'/ .. \`@"
			                   /_| \__/ |_\
							    swapper(1): Oops
							    TSTATE: 0000004480009604 TPC: 00000000005c02ec TNPC: 00000000005c02f0 Y: ffffc630    Not tai
							    g0: 0000000000000949 g1: 0000000000003794 g2: 0000000140003794 g3: 00000000006d9cd8
							    g4: fffff80000000000 g5: 0000000140000000 g6: fffff80017f2c000 g7: 0000000000000000
							    o0: 0000000000000000 o1: fffff80017f2f830 o2: fffff80017f2c000 o3: 0000000000000001
							    o4: 0000000000000200 o5: 0000000000000000 sp: fffff80017f2f0a1 ret_pc: 000000000041c0b4
							    l0: fffff80017f2f980 l1: 0000000000000000 l2: 0000000000000000 l3: 00000000005fd300
							    l4: 0000000000000000 l5: 0000000000000000 l6: 0000000000000000 l7: 0000000000000008
							    i0: 0000000000000001 i1: fffff80017f2c400 i2: 00000000005c02e0 i3: 00000000ffffc630
							    i4: 0000000000000200 i5: 0000000000000000 i6: fffff80017f2f161 i7: 000000000040864c
							    Instruction DUMP: 9de3bf40  22c68005  c2060000 <c25e2068> c2768000  c2060000  80a06006  0240
							    0012  92100019 
							    Kernel panic: Attempted to kill init!
							     Press L1-A to return to the boot prom

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