new IO APIC for 2.4.25?

[Josh Wyatt <jdwyatt@joshua.raleigh.nc.us>]

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I'm writing to report an "unexpected IO APIC" message when booting 2.4.25.

Built 2.4.25 yesterday on one of those little shuttle minisystems (XPC), with 
version 0.1.3 of the hostap driver (http://hostap.epitest.fi/) .  I had been 
running 2.4.22 previously with version 0.1.0 of the hostap driver.

First boot of the new 2.4.25 kernel was about 4pm yesterday.
Today the machine crashed twice around 1:30-1:40pm.  I do not believe it 
completed booting the first time it crashed:
reboot   system boot  2.4.25wiresnap1  Fri Feb 27 14:36          (06:38)
reboot   system boot  2.4.25wiresnap1  Fri Feb 27 14:34          (06:40)
jdwyatt  pts/0        192.168.1.3      Fri Feb 27 14:29 - crash  (00:05)


With 2.4.22 the box had been very stable.  I used the same .config for 2.4.25.

Reading through the kernel ring buffer I saw:
IO APIC #2......
.... register #00: 02000000
.......    : physical APIC id: 02
.......    : Delivery Type: 0
.......    : LTS          : 0
.... register #01: 00178014
.......     : max redirection entries: 0017
.......     : PRQ implemented: 1
.......     : IO APIC version: 0014
An unexpected IO-APIC was found. If this kernel release is less than
three months old please report this to linux-smp@vger.kernel.org

Hence my email reporting this to you.

I note that 2.4.22 complained of this as well:
Feb 24 21:19:52 localhost kernel: IO APIC #2......
Feb 24 21:19:52 localhost kernel: .... register #00: 02000000
Feb 24 21:19:52 localhost kernel: .......    : physical APIC id: 02
Feb 24 21:19:52 localhost kernel: .......    : Delivery Type: 0
Feb 24 21:19:52 localhost kernel: .......    : LTS          : 0
Feb 24 21:19:52 localhost kernel: .... register #01: 00178014
Feb 24 21:19:52 localhost kernel: .......     : max redirection entries: 0017
Feb 24 21:19:52 localhost kernel: .......     : PRQ implemented: 1
Feb 24 21:19:52 localhost kernel: .......     : IO APIC version: 0014
Feb 24 21:19:52 localhost kernel: An unexpected IO-APIC was found. If this 
kernel release is less than
Feb 24 21:19:52 localhost kernel: three months old please report this to 
linux-smp@vger.kernel.org


.... But I never reported it, since nothing drew my attention to it like a crash.

Full dmesg output attached.  Running gentoo 1.4 with gentoo's gcc3.2.3-r2, 
gentoo's glibc2.3.2-r1.  Let me know if you folks need anymore info for the APIC 
bit.

I'll try and track down additional info on the crash.  Probably safe to assume 
the unexpected APIC bit did not cause the crash, since 2.4.22 did not exhibit 
this problem...?

Thanks,
Josh

[-- Attachment #2: dmesg --]
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Linux version 2.4.25wiresnap1 (root@protobear) (gcc version 3.2.3 20030422 (Gentoo Linux 1.4 3.2.3-r2, propolice)) #1 Thu Feb 26 14:56:36 EST 2004
BIOS-provided physical RAM map:
 BIOS-e820: 0000000000000000 - 00000000000a0000 (usable)
 BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 000000000fc00000 (usable)
 BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved)
 BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
 BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved)
252MB LOWMEM available.
ACPI: have wakeup address 0xc0001000
found SMP MP-table at 000f4990
hm, page 000f4000 reserved twice.
hm, page 000f5000 reserved twice.
hm, page 000f1000 reserved twice.
hm, page 000f2000 reserved twice.
On node 0 totalpages: 64512
zone(0): 4096 pages.
zone(1): 60416 pages.
zone(2): 0 pages.
ACPI: Unable to locate RSDP
Intel MultiProcessor Specification v1.4
    Virtual Wire compatibility mode.
OEM ID: OEM00000 Product ID: PROD00000000 APIC at: 0xFEE00000
Processor #0 Pentium 4(tm) APIC version 17
I/O APIC #2 Version 17 at 0xFEC00000.
Enabling APIC mode: Flat.	Using 1 I/O APICs
Processors: 1
Kernel command line: root=/dev/hda6
Initializing CPU#0
Detected 1693.742 MHz processor.
Console: colour VGA+ 80x25
Calibrating delay loop... 3381.65 BogoMIPS
Memory: 252496k/258048k available (1450k kernel code, 5168k reserved, 560k data, 124k init, 0k highmem)
Dentry cache hash table entries: 32768 (order: 6, 262144 bytes)
Inode cache hash table entries: 16384 (order: 5, 131072 bytes)
Mount cache hash table entries: 512 (order: 0, 4096 bytes)
Buffer cache hash table entries: 16384 (order: 4, 65536 bytes)
Page-cache hash table entries: 65536 (order: 6, 262144 bytes)
CPU: Trace cache: 12K uops, L1 D cache: 8K
CPU: L2 cache: 128K
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU:     After generic, caps: 3febfbff 00000000 00000000 00000000
CPU:             Common caps: 3febfbff 00000000 00000000 00000000
CPU: Intel(R) Celeron(R) CPU 1.70GHz stepping 03
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
enabled ExtINT on CPU#0
ESR value before enabling vector: 00000000
ESR value after enabling vector: 00000000
ENABLING IO-APIC IRQs
Setting 2 in the phys_id_present_map
...changing IO-APIC physical APIC ID to 2 ... ok.
init IO_APIC IRQs
 IO-APIC (apicid-pin) 2-0, 2-5, 2-7, 2-10, 2-11, 2-12, 2-17, 2-21, 2-22 not connected.
..TIMER: vector=0x31 pin1=2 pin2=0
number of MP IRQ sources: 19.
number of IO-APIC #2 registers: 24.
testing the IO APIC.......................

IO APIC #2......
.... register #00: 02000000
.......    : physical APIC id: 02
.......    : Delivery Type: 0
.......    : LTS          : 0
.... register #01: 00178014
.......     : max redirection entries: 0017
.......     : PRQ implemented: 1
.......     : IO APIC version: 0014
An unexpected IO-APIC was found. If this kernel release is less than
three months old please report this to linux-smp@vger.kernel.org
.... register #02: 00000000
.......     : arbitration: 00
.... IRQ redirection table:
 NR Log Phy Mask Trig IRR Pol Stat Dest Deli Vect:   
 00 000 00  1    0    0   0   0    0    0    00
 01 001 01  0    0    0   0   0    1    1    39
 02 001 01  0    0    0   0   0    1    1    31
 03 001 01  0    0    0   0   0    1    1    41
 04 001 01  0    0    0   0   0    1    1    49
 05 000 00  1    0    0   0   0    0    0    00
 06 001 01  0    0    0   0   0    1    1    51
 07 000 00  1    0    0   0   0    0    0    00
 08 001 01  0    0    0   0   0    1    1    59
 09 001 01  0    0    0   0   0    1    1    61
 0a 000 00  1    0    0   0   0    0    0    00
 0b 000 00  1    0    0   0   0    0    0    00
 0c 000 00  1    0    0   0   0    0    0    00
 0d 001 01  0    0    0   0   0    1    1    69
 0e 001 01  0    0    0   0   0    1    1    71
 0f 001 01  0    0    0   0   0    1    1    79
 10 001 01  1    1    0   1   0    1    1    81
 11 000 00  1    0    0   0   0    0    0    00
 12 001 01  1    1    0   1   0    1    1    89
 13 001 01  1    1    0   1   0    1    1    91
 14 001 01  1    1    0   1   0    1    1    99
 15 000 00  1    0    0   0   0    0    0    00
 16 000 00  1    0    0   0   0    0    0    00
 17 001 01  1    1    0   1   0    1    1    A1
IRQ to pin mappings:
IRQ0 -> 0:2
IRQ1 -> 0:1
IRQ3 -> 0:3
IRQ4 -> 0:4
IRQ6 -> 0:6
IRQ8 -> 0:8
IRQ9 -> 0:9
IRQ13 -> 0:13
IRQ14 -> 0:14
IRQ15 -> 0:15
IRQ16 -> 0:16
IRQ18 -> 0:18
IRQ19 -> 0:19
IRQ20 -> 0:20
IRQ23 -> 0:23
.................................... done.
Using local APIC timer interrupts.
calibrating APIC timer ...
..... CPU clock speed is 1693.7519 MHz.
..... host bus clock speed is 99.6323 MHz.
cpu: 0, clocks: 996323, slice: 498161
CPU0<T0:996320,T1:498144,D:15,S:498161,C:996323>
mtrr: v1.40 (20010327) Richard Gooch (rgooch@atnf.csiro.au)
mtrr: detected mtrr type: Intel
ACPI: Subsystem revision 20040116
ACPI: Interpreter disabled.
PCI: PCI BIOS revision 2.10 entry at 0xfb570, last bus=1
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: ACPI tables contain no PCI IRQ routing entries
PCI: Probing PCI hardware (bus 00)
PCI: Using IRQ router default [1039/0650] at 00:00.0
PCI->APIC IRQ transform: (B0,I2,P3) -> 20
PCI->APIC IRQ transform: (B0,I2,P0) -> 23
PCI->APIC IRQ transform: (B0,I11,P0) -> 18
PCI->APIC IRQ transform: (B0,I12,P0) -> 19
PCI->APIC IRQ transform: (B0,I15,P0) -> 18
PCI->APIC IRQ transform: (B0,I16,P0) -> 19
PCI->APIC IRQ transform: (B1,I0,P0) -> 16
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
Journalled Block Device driver loaded
devfs: v1.12c (20020818) Richard Gooch (rgooch@atnf.csiro.au)
devfs: boot_options: 0x1
pty: 256 Unix98 ptys configured
Serial driver version 5.05c (2001-07-08) with MANY_PORTS SHARE_IRQ SERIAL_PCI enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A
NET4: Frame Diverter 0.46
RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize
Uniform Multi-Platform E-IDE driver Revision: 7.00beta4-2.4
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
SIS5513: IDE controller at PCI slot 00:02.5
SIS5513: chipset revision 208
SIS5513: not 100% native mode: will probe irqs later
SIS5513: SiS 961 MuTIOL IDE UDMA100 controller
    ide0: BM-DMA at 0x4000-0x4007, BIOS settings: hda:DMA, hdb:pio
    ide1: BM-DMA at 0x4008-0x400f, BIOS settings: hdc:DMA, hdd:pio
hda: ST340810A, ATA DISK drive
blk: queue c0345e60, I/O limit 4095Mb (mask 0xffffffff)
hdc: 56X CD-ROM, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: attached ide-disk driver.
hda: host protected area => 1
hda: 78165360 sectors (40021 MB) w/2048KiB Cache, CHS=4865/255/63, UDMA(100)
Partition check:
 /dev/ide/host0/bus0/target0/lun0:<7>ldm_validate_partition_table(): Found an MS-DOS partition table, not a dynamic disk.
 p1 < p5 p6 p7 p8 > p2 p3
Initializing Cryptographic API
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
IP: routing cache hash table of 2048 buckets, 16Kbytes
TCP: Hash tables configured (established 16384 bind 32768)
Linux IP multicast router 0.06 plus PIM-SM
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
EXT3-fs: INFO: recovery required on readonly filesystem.
EXT3-fs: write access will be enabled during recovery.
kjournald starting.  Commit interval 5 seconds
EXT3-fs: recovery complete.
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem) readonly.
Mounted devfs on /dev
Freeing unused kernel memory: 124k freed
Adding Swap: 506036k swap-space (priority -1)
EXT3 FS 2.4-0.9.19, 19 August 2002 on ide0(3,6), internal journal
8139too Fast Ethernet driver 0.9.26
divert: allocating divert_blk for eth0
eth0: RealTek RTL8139 at 0xd084a000, 00:04:e2:00:6a:a0, IRQ 19
eth0:  Identified 8139 chip type 'RTL-8139C'
divert: allocating divert_blk for eth1
eth1: RealTek RTL8139 at 0xd084c000, 00:30:1b:10:2d:70, IRQ 18
eth1:  Identified 8139 chip type 'RTL-8100B/8139D'
Universal TUN/TAP device driver 1.5 (C)1999-2002 Maxim Krasnyansky
NET4: Ethernet Bridge 008 for NET4.0
kjournald starting.  Commit interval 5 seconds
EXT3-fs warning: maximal mount count reached, running e2fsck is recommended
EXT3 FS 2.4-0.9.19, 19 August 2002 on ide0(3,7), internal journal
EXT3-fs: recovery complete.
EXT3-fs: mounted filesystem with ordered data mode.
usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
Real Time Clock Driver v1.10f
reiserfs: found format "3.6" with standard journal
reiserfs: checking transaction log (device ide0(3,8)) ...
for (ide0(3,8))
ide0(3,8):Using r5 hash to sort names
eth0: link up, 10Mbps, half-duplex, lpa 0x0000
eth1: link down
hostap_crypt: registered algorithm 'NULL'
hostap_pci: 0.1.3 - 2004-02-08 (Jouni Malinen <jkmaline@cc.hut.fi>)
divert: allocating divert_blk for wlan0
hostap_pci: Registered netdevice wlan0
prism2_hw_init: initialized in 200 ms
wlan0: NIC: id=0x8013 v1.0.0
wlan0: PRI: id=0x15 v1.0.7
wlan0: STA: id=0x1f v1.3.6
wlan0: defaulting to host-based encryption as a workaround for firmware bug in Host AP mode WEP
wlan0: defaulting to bogus WDS frame as a workaround for firmware bug in Host AP mode WDS
wlan0: Intersil Prism2.5 PCI: mem=0xe1101000, irq=18
divert: allocating divert_blk for wireless
device wlan0 entered promiscuous mode
divert: allocating divert_blk for pos
eth1: Promiscuous mode enabled.
device eth1 entered promiscuous mode
divert: allocating divert_blk for vpn
pos: port 1(eth1) entering learning state
wireless: port 1(wlan0) entering learning state
ip_tables: (C) 2000-2002 Netfilter core team
ip_conntrack version 2.1 (2016 buckets, 16128 max) - 292 bytes per conntrack
pos: port 1(eth1) entering forwarding state
pos: topology change detected, propagating
wireless: port 1(wlan0) entering forwarding state
wireless: topology change detected, propagating
wlan0: 00:02:a5:a6:4f:4c auth_cb - STA authenticated
wlan0: 00:02:a5:a6:4f:4c assoc_cb - STA associated
divert: not allocating divert_blk for non-ethernet device tap0
device tap0 entered promiscuous mode
vpn: port 1(tap0) entering learning state
vpn: port 1(tap0) entering forwarding state
vpn: topology change detected, propagating
kjournald starting.  Commit interval 5 seconds
EXT3 FS 2.4-0.9.19, 19 August 2002 on ide0(3,5), internal journal
EXT3-fs: mounted filesystem with ordered data mode.