unexpected IO-APIC

frontal
2003-01-10T10:04:15Z

Hi,

Since running kernel 2.4.20 I'm getting the following messages:

=====================================================================
Jan 10 09:54:26 p2 syslogd 1.4.1: restart.
Jan 10 09:54:26 p2 syslog: syslogd startup succeeded
Jan 10 09:54:26 p2 kernel: klogd 1.4.1, log source = /proc/kmsg started.
Jan 10 09:54:26 p2 kernel: Inspecting /boot/System.map-2.4.20
Jan 10 09:54:26 p2 syslog: klogd startup succeeded
Jan 10 09:54:26 p2 portmap: portmap startup succeeded
Jan 10 09:54:26 p2 kernel: Loaded 18008 symbols from /boot/System.map-2.4.20.
Jan 10 09:54:26 p2 kernel: Symbols match kernel version 2.4.20.
Jan 10 09:54:26 p2 kernel: Loaded 21 symbols from 4 modules.
Jan 10 09:54:26 p2 kernel: Linux version 2.4.20 (root@p2) (gcc version 3.2) #6 Sun Dec 1 19:17:11 CET 2002
Jan 10 09:54:26 p2 kernel: BIOS-provided physical RAM map:
Jan 10 09:54:26 p2 kernel: BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
Jan 10 09:54:26 p2 kernel: BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
Jan 10 09:54:26 p2 kernel: BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
Jan 10 09:54:26 p2 kernel: BIOS-e820: 0000000000100000 - 000000001fff0000 (usable)
Jan 10 09:54:26 p2 kernel: BIOS-e820: 000000001fff0000 - 000000001fff8000 (ACPI data)
Jan 10 09:54:26 p2 kernel: BIOS-e820: 000000001fff8000 - 0000000020000000 (ACPI NVS)
Jan 10 09:54:26 p2 kernel: BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved)
Jan 10 09:54:26 p2 kernel: BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
Jan 10 09:54:26 p2 kernel: BIOS-e820: 00000000fff80000 - 0000000100000000 (reserved)
Jan 10 09:54:26 p2 kernel: 511MB LOWMEM available.
Jan 10 09:54:26 p2 kernel: found SMP MP-table at 000fb940
Jan 10 09:54:26 p2 kernel: hm, page 000fb000 reserved twice.
Jan 10 09:54:26 p2 kernel: hm, page 000fc000 reserved twice.
Jan 10 09:54:26 p2 kernel: hm, page 000f6000 reserved twice.
Jan 10 09:54:26 p2 kernel: hm, page 000f7000 reserved twice.
Jan 10 09:54:26 p2 kernel: On node 0 totalpages: 131056
Jan 10 09:54:26 p2 kernel: zone(0): 4096 pages.
Jan 10 09:54:26 p2 kernel: zone(1): 126960 pages.
Jan 10 09:54:26 p2 kernel: zone(2): 0 pages.
Jan 10 09:54:26 p2 kernel: Intel MultiProcessor Specification v1.4
Jan 10 09:54:26 p2 kernel: Virtual Wire compatibility mode.
Jan 10 09:54:26 p2 kernel: OEM ID: VIA Product ID: VT5440B APIC at: 0xFEE00000
Jan 10 09:54:26 p2 kernel: Processor #0 Pentium(tm) Pro APIC version 17
Jan 10 09:54:26 p2 kernel: I/O APIC #2 Version 3 at 0xFEC00000.
Jan 10 09:54:26 p2 kernel: Processors: 1
Jan 10 09:54:26 p2 kernel: Kernel command line: auto BOOT_IMAGE=linux ro root=341 BOOT_FILE=/boot/vmlinuz-2.4.20 video=matrox:vesa:0x111
Jan 10 09:54:26 p2 kernel: Initializing CPU#0
Jan 10 09:54:26 p2 kernel: Detected 1800.119 MHz processor.
Jan 10 09:54:26 p2 kernel: Console: colour VGA+ 80x25
Jan 10 09:54:26 p2 kernel: Calibrating delay loop... 3591.37 BogoMIPS
Jan 10 09:54:26 p2 kernel: Memory: 515728k/524224k available (1552k kernel code, 8108k reserved, 549k data, 120k init, 0k highmem)
Jan 10 09:54:26 p2 kernel: Dentry cache hash table entries: 65536 (order: 7, 524288 bytes)
Jan 10 09:54:26 p2 kernel: Inode cache hash table entries: 32768 (order: 6, 262144 bytes)
Jan 10 09:54:26 p2 kernel: Mount-cache hash table entries: 8192 (order: 4, 65536 bytes)
Jan 10 09:54:26 p2 kernel: Buffer-cache hash table entries: 32768 (order: 5, 131072 bytes)
Jan 10 09:54:26 p2 kernel: Page-cache hash table entries: 131072 (order: 7, 524288 bytes)
Jan 10 09:54:26 p2 kernel: CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
Jan 10 09:54:26 p2 kernel: CPU: L2 Cache: 256K (64 bytes/line)
Jan 10 09:54:26 p2 kernel: Intel machine check architecture supported.
Jan 10 09:54:26 p2 kernel: Intel machine check reporting enabled on CPU#0.
Jan 10 09:54:26 p2 kernel: CPU: AMD Athlon(tm) XP 2200+ stepping 00
Jan 10 09:54:26 p2 kernel: Enabling fast FPU save and restore... done.
Jan 10 09:54:26 p2 kernel: Enabling unmasked SIMD FPU exception support... done.
Jan 10 09:54:26 p2 kernel: Checking 'hlt' instruction... OK.
Jan 10 09:54:26 p2 kernel: POSIX conformance testing by UNIFIX
Jan 10 09:54:26 p2 kernel: enabled ExtINT on CPU#0
Jan 10 09:54:26 p2 kernel: ESR value before enabling vector: 00000080
Jan 10 09:54:26 p2 keytable: Loading keymap: succeeded
Jan 10 09:54:26 p2 kernel: ESR value after enabling vector: 00000000
Jan 10 09:54:26 p2 kernel: ENABLING IO-APIC IRQs
Jan 10 09:54:26 p2 kernel: Setting 2 in the phys_id_present_map
Jan 10 09:54:26 p2 kernel: ...changing IO-APIC physical APIC ID to 2 ... ok.
Jan 10 09:54:26 p2 kernel: ..TIMER: vector=0x31 pin1=2 pin2=0
Jan 10 09:54:27 p2 kernel: testing the IO APIC.......................
Jan 10 09:54:27 p2 kernel:
Jan 10 09:54:27 p2 keytable: Loading system font: succeeded
Jan 10 09:54:27 p2 kernel: WARNING: unexpected IO-APIC, please mail
Jan 10 09:54:27 p2 kernel: to linux-smp@vger.kernel.org
Jan 10 09:54:27 p2 kernel: .................................... done.
=====================================================================

My system is:
PROC: AMD Athlon 2200 XP
MAINBOARD: MSI KT3 Ultra 2R
CHIPSETS:
VIA KT333
VIA VT8235

I hope this is enough information, if not you can ofcourse mail me.
1 question (I rarely mail people for questions):
Could this warning cause lockups?
Since running kernel 2.4.20 I often get lockups while burning cd's.
It almost never happens with writing files from hd to cd, but often
when finalizing a cd after a direct copy or from an ISO my system
locks up and starts flashing the CapsLock- and ScrollLock-key on my kb.
I can at least get my hd's synched with the magic-sysrq, but a
reboot is required after it.
It looks like its a time-out which causes the lockup:
=====================================================================
Jan 10 09:45:55 p2 kernel: scsi : aborting command due to timeout : pid 301468, scsi1, channel 0, id 0, lun 0 Read (10) 00 00 03 78 47 00
00 3f 00
Jan 10 09:45:55 p2 kernel: scsi : aborting command due to timeout : pid 301469, scsi1, channel 0, id 0, lun 0 Read (10) 00 00 03 78 86 00
00 01 00
=====================================================================

Well, if the warning has nothing to do with it I'll continue experimenting
or switch back to a previous kernel.

Thanks in advance.

W. Tellier