IDE TCQ #4

I applied TCQ#4 only...

I have to swap my host, probably, or there is some other problem. I got two unexpected interrupts, then machine looked fine, but shortly thereafter oops appeared. /proc/ide/ide0/hda/tcq showed 'not active' before it crashed. Machine is SMP.

NULL pointer ...

EAX=EDX=EBX = 0
ECX,ESP,EBP = some stack addresses
ESI=ide_hwifs + 248 / 15400
EDI=ide_hwifs + 0

EIP=idedisk_do_request + 210/632

    start_request + 690/807
    __elv_next_request + 10/14
    ide_queue_command + 422/647
    ide_do_request + 86/122
    do_ide_request + 18/22
    generic_unplug_device + 86/135
    __run_task_queue + 179/190
    do_page_cache_readahead + 351/379
    page_cache_readahead + 256/264
    do_generic_file_read + 95/782
    generic_file_read + 126/304
    file_read_actor + 0 (passed as argument to ^^^)
    sys_read + 150/285
    syscall_call + 7/...

# ATA/IDE/MFM/RLL support
CONFIG_IDE=y
CONFIG_BLK_DEV_IDE=y
CONFIG_BLK_DEV_IDEDISK=y
CONFIG_BLK_DEV_IDECD=m
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_BLK_DEV_IDEDMA_PCI=y
CONFIG_IDEDMA_PCI_AUTO=y
CONFIG_BLK_DEV_IDEDMA=y
CONFIG_BLK_DEV_IDE_TCQ=y
CONFIG_BLK_DEV_IDE_TCQ_FULL=y
CONFIG_BLK_DEV_IDE_TCQ_DEFAULT=y
CONFIG_BLK_DEV_IDE_TCQ_DEPTH=8
CONFIG_IDEDMA_AUTO=y

Linux version 2.5.8-smp (root@vana) (gcc version 2.95.4 20011002 (Debian prerelease)) #1 SMP Mon Apr 15 19:59:12 CEST 2002 BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 000000000fff0000 (usable)
BIOS-e820: 000000000fff0000 - 000000000fff8000 (ACPI data)
BIOS-e820: 000000000fff8000 - 0000000010000000 (ACPI NVS)
BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved)
BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved)
255MB LOWMEM available.
found SMP MP-table at 000fb120
hm, page 000fb000 reserved twice.
hm, page 000fc000 reserved twice.
hm, page 000f5000 reserved twice.
hm, page 000f6000 reserved twice.
On node 0 totalpages: 65520
zone(0): 4096 pages.
zone(1): 61424 pages.
zone(2): 0 pages.
Intel MultiProcessor Specification v1.1
Virtual Wire compatibility mode.
OEM ID: VIA Product ID: VT3075 APIC at: 0xFEE00000
Processor #0 Pentium(tm) Pro APIC version 17
Processor #1 Pentium(tm) Pro APIC version 17
I/O APIC #2 Version 17 at 0xFEC00000.
Processors: 2
Kernel command line: auto BOOT_IMAGE=Linux ro root=301 ramdisk=0 devfs=nomount video=matrox:vesa:0x105,fv:100,lower:1 pciorder=1:0 video=scrollback:0 Initializing CPU#0
Detected 797.071 MHz processor.
Console: colour VGA+ 80x25
Calibrating delay loop... 1589.24 BogoMIPS
Memory: 256660k/262080k available (1395k kernel code, 5032k reserved, 549k data, 240k 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)
CPU: Before vendor init, caps: 0387fbff 00000000 00000000, vendor = 0
CPU: L1 I cache: 16K, L1 D cache: 16K
CPU: L2 cache: 256K
CPU: After vendor init, caps: 0387fbff 00000000 00000000 00000000
CPU serial number disabled.
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.

CPU:     After generic, caps: 0383fbff 00000000 00000000 00000000
CPU:             Common caps: 0383fbff 00000000 00000000 00000000

Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done. Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
mtrr: v1.40 (20010327) Richard Gooch ([email protected])
mtrr: detected mtrr type: Intel
CPU: Before vendor init, caps: 0383fbff 00000000 00000000, vendor = 0
CPU: L1 I cache: 16K, L1 D cache: 16K
CPU: L2 cache: 256K
CPU: After vendor init, caps: 0383fbff 00000000 00000000 00000000 Intel machine check reporting enabled on CPU#0.

CPU:     After generic, caps: 0383fbff 00000000 00000000 00000000
CPU:             Common caps: 0383fbff 00000000 00000000 00000000
CPU0: Intel Pentium III (Coppermine) stepping 03
per-CPU timeslice cutoff: 731.12 usecs.

task migration cache decay timeout: 10 msecs.
enabled ExtINT on CPU#0
ESR value before enabling vector: 00000004
ESR value after enabling vector: 00000000
Booting processor 1/1 eip 2000
Initializing CPU#1
masked ExtINT on CPU#1
ESR value before enabling vector: 00000000
ESR value after enabling vector: 00000000
Calibrating delay loop... 1592.52 BogoMIPS
CPU: Before vendor init, caps: 0387fbff 00000000 00000000, vendor = 0
CPU: L1 I cache: 16K, L1 D cache: 16K
CPU: L2 cache: 256K
CPU: After vendor init, caps: 0387fbff 00000000 00000000 00000000 CPU serial number disabled.
Intel machine check reporting enabled on CPU#1.

CPU:     After generic, caps: 0383fbff 00000000 00000000 00000000
CPU:             Common caps: 0383fbff 00000000 00000000 00000000
CPU1: Intel Pentium III (Coppermine) stepping 03

Total of 2 processors activated (3181.77 BogoMIPS). 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, 2-20, 2-21, 2-22, 2-23 not connected.
..TIMER: vector=0x31 pin1=2 pin2=0
number of MP IRQ sources: 23.
number of IO-APIC #2 registers: 24.
testing the IO APIC.......................

IO APIC #2......
.... register #00: 02000000
....... : physical APIC id: 02
.... register #01: 00170011

.......     : max redirection entries: 0017
.......     : PRQ implemented: 0
.......     : IO APIC version: 0011

.... 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
 01 003 03  0    0    0   0   0    1    1    39
 02 003 03  0    0    0   0   0    1    1    31
 03 003 03  0    0    0   0   0    1    1    41
 04 003 03  0    0    0   0   0    1    1    49
 05 003 03  1    1    0   1   0    1    1    51
 06 003 03  0    0    0   0   0    1    1    59
 07 003 03  0    0    0   0   0    1    1    61
 08 003 03  0    0    0   0   0    1    1    69
 09 003 03  1    1    0   1   0    1    1    71
 0a 003 03  1    1    0   1   0    1    1    79
 0b 003 03  1    1    0   1   0    1    1    81
 0c 003 03  0    0    0   0   0    1    1    89
 0d 003 03  0    0    0   0   0    1    1    91
 0e 003 03  0    0    0   0   0    1    1    99
 0f 003 03  0    0    0   0   0    1    1    A1
 10 003 03  1    1    0   1   0    1    1    A9
 11 003 03  1    1    0   1   0    1    1    B1
 12 003 03  1    1    0   1   0    1    1    B9
 13 003 03  1    1    0   1   0    1    1    C1
 14 000 00  1    0    0   0   0    0    0    00
 15 000 00  1    0    0   0   0    0    0    00
 16 000 00  1    0    0   0   0    0    0    00
 17 000 00  1    0    0   0   0    0    0    00

IRQ to pin mappings:
IRQ0 -> 0:2
IRQ1 -> 0:1
IRQ3 -> 0:3
IRQ4 -> 0:4
IRQ5 -> 0:5
IRQ6 -> 0:6
IRQ7 -> 0:7
IRQ8 -> 0:8
IRQ9 -> 0:9
IRQ10 -> 0:10
IRQ11 -> 0:11
IRQ12 -> 0:12
IRQ13 -> 0:13
IRQ14 -> 0:14
IRQ15 -> 0:15
IRQ16 -> 0:16
IRQ17 -> 0:17
IRQ18 -> 0:18
IRQ19 -> 0:19
.................................... done.
Using local APIC timer interrupts.
calibrating APIC timer ...
..... CPU clock speed is 797.0946 MHz.
..... host bus clock speed is 99.6368 MHz.
cpu: 0, clocks: 996368, slice: 332122 CPU0<T0:996368,T1:664240,D:6,S:332122,C:996368>
cpu: 1, clocks: 996368, slice: 332122 CPU1<T0:996368,T1:332112,D:12,S:332122,C:996368>
checking TSC synchronization across CPUs: passed.
mtrr: your CPUs had inconsistent variable MTRR settings
mtrr: probably your BIOS does not setup all CPUs
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
PCI: PCI BIOS revision 2.10 entry at 0xfdb01, last bus=1
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: Probing PCI hardware (bus 00)
PCI->APIC IRQ transform: (B0,I7,P3) -> 19
PCI->APIC IRQ transform: (B0,I7,P3) -> 19
PCI->APIC IRQ transform: (B0,I10,P0) -> 18
PCI->APIC IRQ transform: (B0,I11,P0) -> 19
PCI->APIC IRQ transform: (B0,I11,P0) -> 19
PCI->APIC IRQ transform: (B0,I14,P0) -> 18
PCI->APIC IRQ transform: (B1,I0,P0) -> 16
PCI: Enabling Via external APIC routing
PCI: Via IRQ fixup for 00:07.3, from 10 to 3
PCI: Via IRQ fixup for 00:07.2, from 10 to 3
IA-32 Microcode Update Driver: v1.11 <[email protected]>
Starting kswapd
BIO: pool of 256 setup, 14Kb (56 bytes/bio)
biovec: init pool 0, 1 entries, 12 bytes
biovec: init pool 1, 4 entries, 48 bytes
biovec: init pool 2, 16 entries, 192 bytes
biovec: init pool 3, 64 entries, 768 bytes
biovec: init pool 4, 128 entries, 1536 bytes
biovec: init pool 5, 256 entries, 3072 bytes
Journalled Block Device driver loaded
devfs: v1.13 (20020406) Richard Gooch ([email protected])
devfs: boot_options: 0x0
parport0: PC-style at 0x378 (0x778) [PCSPP,TRISTATE]
parport0: cpp_daisy: aa5500ff(38)
parport0: assign_addrs: aa5500ff(38)
parport0: cpp_daisy: aa5500ff(38)
parport0: assign_addrs: aa5500ff(38)
parport_pc: Via 686A parallel port: io=0x378
i2c-core.o: i2c core module
i2c-dev.o: i2c /dev entries driver module
i2c-core.o: driver i2c-dev dummy driver registered.
i2c-algo-bit.o: i2c bit algorithm module
i2c-proc.o version 2.6.1 (20010825)
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
Real Time Clock Driver v1.11
Non-volatile memory driver v1.1
block: 512 slots per queue, batch=32
Linux agpgart interface v0.99 (c) Jeff Hartmann
agpgart: Maximum main memory to use for agp memory: 203M
agpgart: Detected Via Apollo Pro chipset
agpgart: AGP aperture is 256M @ 0xe0000000
[drm] AGP 0.99 on VIA Apollo Pro @ 0xe0000000 256MB
[drm] Initialized mga 3.0.2 20010321 on minor 0
Uniform Multi-Platform E-IDE driver ver.:7.0.0
ide: system bus speed 33MHz
VIA Technologies, Inc. Bus Master IDE: IDE controller on PCI slot 00:07.1 VIA Technologies, Inc. Bus Master IDE: chipset revision 16
VIA Technologies, Inc. Bus Master IDE: not 100%% native mode: will probe irqs later
VP_IDE: VIA vt82c686a (rev 22) IDE UDMA66 controller on pci00:07.1

    ide0: BM-DMA at 0xffa0-0xffa7, BIOS settings: hda:DMA, hdb:pio
    ide1: BM-DMA at 0xffa8-0xffaf, BIOS settings: hdc:DMA, hdd:pio

hda: WDC WD1200JB-00CRA0, ATA DISK drive
hdc: TOSHIBA MK6409MAV, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
ide: unexpected interrupt
hda: 234441648 sectors (120034 MB) w/8192KiB Cache, CHS=232581/16/63, UDMA(66)
ide: unexpected interrupt
hdc: 12685680 sectors (6495 MB), CHS=13424/15/63, UDMA(33) Partition check:
/dev/ide/host0/bus0/target0/lun0: p1 p2 /dev/ide/host1/bus1/target0/lun0: [PTBL] [839/240/63] p1 p2 p4
SCSI subsystem driver Revision: 1.00
kmod: failed to exec /sbin/modprobe -s -k scsi_hostadapter, errno = 2 i2c-core.o: driver maven registered.
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
IP: routing cache hash table of 1024 buckets, 16Kbytes
TCP: Hash tables configured (established 8192 bind 10922)
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
matroxfb: Matrox G450 detected
matroxfb: MTRR's turned on
matroxfb: 1024x768x8bpp (virtual: 1024x16380)
matroxfb: framebuffer at 0xDA000000, mapped to 0xd084d000, size 16777216
Console: switching to colour frame buffer device 128x48
fb0: MATROX VGA frame buffer device
matroxfb_crtc2: secondary head of fb0 was registered as fb1 i2c-dev.o: Registered 'DDC:fb0 #0 on i2c-matroxfb' as minor 0 i2c-core.o: adapter DDC:fb0 #0 on i2c-matroxfb registered as adapter 0.
PCI: Enabling device 00:09.0 (0080 -> 0082)
matroxfb: Matrox Millennium (PCI) detected
matroxfb: MTRR's turned on
matroxfb: 1024x768x8bpp (virtual: 1024x8192)
matroxfb: framebuffer at 0xDE000000, mapped to 0xd2853000, size 8388608
fb2: MATROX VGA frame buffer device
fb2: initializing hardware
i2c-dev.o: Registered 'DDC:fb2 #0 on i2c-matroxfb' as minor 1 i2c-core.o: adapter DDC:fb2 #0 on i2c-matroxfb registered as adapter 1.
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 240k freed
Adding Swap: 1024120k swap-space (priority -1)
es1371: version v0.30 time 19:58:57 Apr 15 2002
es1371: found chip, vendor id 0x1274 device id 0x1371 revision 0x07
es1371: found es1371 rev 7 at io 0xd000 irq 18
es1371: features: joystick 0x0
ac97_codec: AC97 Audio codec, id: 0x8384:0x7608 (SigmaTel STAC9708) Linux Tulip driver version 1.1.12 (Mar 07, 2002)

tulip0: Transceiver selection forced to 100baseTx.
tulip0:  EEPROM default media type Autosense.
tulip0:  Index #0 - Media 10baseT (#0) described by a 21142 Serial PHY (2) block.
tulip0:  Index #1 - Media 10baseT-FDX (#4) described by a 21142 Serial PHY (2) block.
tulip0:  Index #2 - Media 100baseTx (#3) described by a 21143 SYM PHY (4) block.
tulip0:  Index #3 - Media 100baseTx-FDX (#5) described by a 21143 SYM PHY (4) block.
eth0: Digital DS21143 Tulip rev 48 at 0xd30f2f80, 00:80:AD:83:5C:4D, IRQ 11.
eth0: Using user-specified media 100baseTx.
NET4: Linux IPX 0.48 for NET4.0

IPX Portions Copyright (c) 1995 Caldera, Inc. IPX Portions Copyright (c) 2000, 2001 Conectiva, Inc.

That is fine.

Could you decode that? It doesn't look like any of your drives support TCQ, it should have enabled them right here:

hda: tagged command queueing enabled, command queue depth 8

is missing, TCQ is not supported on this drive.

(these unexpected interrupts are nothing to worry about, only if some happen after this part it's a concern).

Jens Axboe