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SubjectRe: uninteruptable sleep
From
> Its a kernel bug if it gets stuck like this. You need to provide more info
> though - what file system, what devices, how much memory. Also ps can give you
> the wait address of a process stuck in 'D' state which is valuable for debug

Let's see if I'm getting this right, processes in D state should be killable?

I do not know if this is related, but I had two occurrences of those within
the last 48 hours, albeit on 2.2.18.

1. starting tin (1.4.1) as a user - nothing happened, but the ssh session froze.
Same on second try and a third with mutt (1.2.5) The three processes ended up
D and unkillable by root. A few seconds later the sytem became totally
unresponsive, with the kernel spewing 'VM: do_try_to_free_pages faild for
cupsd' (sp?) at top speed... reboot.

2. The cups (1.1.4) usb backend ended up in this state after I did a
'rmmod printer; insmod printer'

Regards
Christian


Kernel: linux-2.2.18 + raid-2.2.17-A0

System: Pentium III 600 w/ 256MB RAM

hard disks:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: IBM Model: DDRS-34560D Rev: DC1B
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 01 Lun: 00
Vendor: YAMAHA Model: CRW4260 Rev: 1.0q
Type: CD-ROM ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 08 Lun: 00
Vendor: QUANTUM Model: ATLAS_V_18_WLS Rev: 0230
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi0 Channel: 00 Id: 09 Lun: 00
Vendor: QUANTUM Model: ATLAS_V_18_WLS Rev: 0230
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi0 Channel: 00 Id: 10 Lun: 00
Vendor: QUANTUM Model: ATLAS_V_18_WLS Rev: 0230
Type: Direct-Access ANSI SCSI revision: 03

RAID info:
Personalities : [raid5]
read_ahead 1024 sectors
md0 : active raid5 sdd1[2] sdc1[1] sdb1[0] 35069824 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU]
unused devices: <none>

Layout of RAID disks (sdb-sdd):
Disk /dev/sdb: 64 heads, 32 sectors, 17510 cylinders
Units = cylinders of 2048 * 512 bytes

Device Boot Start End Blocks Id System
/dev/sdb1 387 17510 17534976 fd Linux raid autodetect
/dev/sdb3 130 386 263168 83 Linux
/dev/sdb4 1 129 132095+ 82 Linux swap

lspci -vvv:
00:00.0 Host bridge: Intel Corporation 440BX/ZX - 82443BX/ZX Host bridge (rev 03)
00:01.0 PCI bridge: Intel Corporation 440BX/ZX - 82443BX/ZX AGP bridge (rev 03)
00:07.0 ISA bridge: Intel Corporation 82371AB PIIX4 ISA (rev 02)
00:07.1 IDE interface: Intel Corporation 82371AB PIIX4 IDE (rev 01)
00:07.2 USB Controller: Intel Corporation 82371AB PIIX4 USB (rev 01)
00:07.3 Bridge: Intel Corporation 82371AB PIIX4 ACPI (rev 02)
00:08.0 VGA compatible controller: Cirrus Logic GD 5430/40 [Alpine] (rev 48)
00:09.0 SCSI storage controller: Adaptec 7892A (rev 02)
00:0b.0 Ethernet controller: 3Com Corporation 3c905C-TX [Fast Etherlink] (rev 74)
jesus:/raid/home/chris# lspci -vvv
00:00.0 Host bridge: Intel Corporation 440BX/ZX - 82443BX/ZX Host bridge (rev 03)
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR+
Latency: 64 set
Region 0: Memory at d8000000 (32-bit, prefetchable)
Capabilities: [a0] AGP version 1.0
Status: RQ=31 SBA+ 64bit- FW- Rate=21
Command: RQ=0 SBA- AGP- 64bit- FW- Rate=

00:01.0 PCI bridge: Intel Corporation 440BX/ZX - 82443BX/ZX AGP bridge (rev 03) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
Status: Cap- 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 64 set
Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
I/O behind bridge: 0000d000-0000dfff
Memory behind bridge: fff00000-000fffff
Prefetchable memory behind bridge: fff00000-000fffff
BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B+

00:07.0 ISA bridge: Intel Corporation 82371AB PIIX4 ISA (rev 02)
Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 0 set

00:07.1 IDE interface: Intel Corporation 82371AB PIIX4 IDE (rev 01) (prog-if 80 [Master])
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Region 4: I/O ports at f000 [disabled]

00:07.2 USB Controller: Intel Corporation 82371AB PIIX4 USB (rev 01) (prog-if 00 [UHCI])
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 64 set
Interrupt: pin D routed to IRQ 15
Region 4: I/O ports at e000

00:07.3 Bridge: Intel Corporation 82371AB PIIX4 ACPI (rev 02)
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-

00:08.0 VGA compatible controller: Cirrus Logic GD 5430/40 [Alpine] (rev 48) (prog-if 00 [VGA])
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Interrupt: pin A routed to IRQ 11
Region 0: Memory at dc000000 (32-bit, prefetchable)
Expansion ROM at dd000000 [disabled]

00:09.0 SCSI storage controller: Adaptec 7892A (rev 02)
Subsystem: Adaptec: Unknown device e2a0
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 40 min, 25 max, 64 set, cache line size 08
Interrupt: pin A routed to IRQ 10
BIST result: 00
Region 0: I/O ports at e400
Region 1: Memory at e0001000 (64-bit, non-prefetchable)
Expansion ROM at de000000 [disabled]
Capabilities: [dc] Power Management version 2
Flags: PMEClk- AuxPwr- DSI- D1- D2- PME-
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:0b.0 Ethernet controller: 3Com Corporation 3c905C-TX [Fast Etherlink] (rev 74)
Subsystem: 3Com Corporation: Unknown device 1000
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 10 min, 10 max, 64 set, cache line size 08
Interrupt: pin A routed to IRQ 15
Region 0: I/O ports at e800
Region 1: Memory at e0000000 (32-bit, non-prefetchable)
Expansion ROM at df000000 [disabled]
Capabilities: [dc] Power Management version 2
Flags: PMEClk- AuxPwr- DSI- D1+ D2+ PME+
Status: D0 PME-Enable+ DSel=0 DScale=2 PME-
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