[syslinux] Problem with Syslinux 2.07 and APM on SMP system

Terry Barnaby terry1 at beam.ltd.uk
Wed Jan 7 02:19:48 PST 2004


Hi,

We have a problem with Syslinux 2.07 and APM on an SMP system.
When either network booting with pxelinux.0 or CDROM booting
with isolinux we get a kernel error message:

Jan  7 09:59:51 ddcserver1 kernel: kernel BUG at apm.c:1756!
Jan  7 09:59:51 ddcserver1 kernel: invalid operand: 0000
Jan  7 09:59:51 ddcserver1 kernel:
Jan  7 09:59:51 ddcserver1 kernel: CPU:    1
Jan  7 09:59:51 ddcserver1 kernel: EIP:    0060:[<c0118d3e>]    Not tainted
Jan  7 09:59:51 ddcserver1 kernel: EFLAGS: 00010202
Jan  7 09:59:51 ddcserver1 kernel:
Jan  7 09:59:51 ddcserver1 kernel: EIP is at apm [kernel] 0x33e (2.4.20-24.9smp)
Jan  7 09:59:51 ddcserver1 kernel: eax: 00000001   ebx: c44c4000   ecx: c03c02a8   edx: c03c02ac
Jan  7 09:59:51 ddcserver1 kernel: esi: c027e933   edi: c44c4400   ebp: 00000000   esp: c44c5fd0
Jan  7 09:59:51 ddcserver1 kernel: ds: 0068   es: 0068   ss: 0068
Jan  7 09:59:51 ddcserver1 kernel: Process kapmd (pid: 7, stackpage=c44c5000)
Jan  7 09:59:51 ddcserver1 kernel: Stack: 00000000 00000000 00000000 00000000 00000068 c0118a00 
00000000 00000000
Jan  7 09:59:51 ddcserver1 kernel:        c010759d 00000000 00000000 00000000
Jan  7 09:59:51 ddcserver1 kernel: Call Trace:   [<c0118a00>] apm [kernel] 0x0 (0xc44c5fe4))
Jan  7 09:59:51 ddcserver1 kernel: [<c010759d>] kernel_thread_helper [kernel] 0x5 (0xc44c5ff0))
Jan  7 09:59:51 ddcserver1 kernel:
Jan  7 09:59:51 ddcserver1 kernel:
Jan  7 09:59:51 ddcserver1 kernel: Code: 0f 0b dc 06 85 e8 27 c0 e9 03 fd ff ff 90 8d 74 26 00 83 ec

The system runs fine but will not power off.
If the system boots from the hard disk using grub all is fine.

The kernel boot line is:
	append ro ramdisk_size=6000 initrd=beamsys/beamsys-initrd apm=power-off

The OS is Redhat Linux 9 with kernel 2.4.20-24.9smp
The hardware is a Supermicro 6023P-i dual Xeon server.

Any ideas ?

Cheers


Terry

-- 
Dr Terry Barnaby                     BEAM Ltd
Phone: +44 1454 324512               Northavon Business Center, Dean Rd
Fax:   +44 1454 313172               Yate, Bristol, BS37 5NH, UK
Email: terry at beam.ltd.uk             Web: www.beam.ltd.uk
BEAM for: Visually Impaired X-Terminals, Parallel Processing, Software
                       "Tandems are twice the fun !"




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