Re: 2.5.7x: processes in D state

[Olivier NICOLAS <olivn@trollprod.org>]

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Hello,


1. SMP enable

System: dual Athlon 1800 MP
	MSI K7D master MB using IDE disk controller


2. Preempt is not enable

3. IDE controller

lspci
...
00:07.1 IDE interface: Advanced Micro Devices [AMD] AMD-768 [Opus] IDE 
(rev 04)
....


4. device driver used
CONFIG_BLK_DEV_AMD74XX=y

(full config is attached)


5. dmesg output
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
AMD7441: IDE controller at PCI slot 0000:00:07.1
AMD7441: chipset revision 4
AMD7441: not 100% native mode: will probe irqs later
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
AMD_IDE: Advanced Micro Devic AMD-768 [Opus] IDE (rev 04) UDMA100 
controller on pci0000:00:07.1
     ide0: BM-DMA at 0xe000-0xe007, BIOS settings: hda:DMA, hdb:pio
     ide1: BM-DMA at 0xe008-0xe00f, BIOS settings: hdc:pio, hdd:DMA
hda: IC35L060AVVA07-0, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
hdd: LG DVD-ROM DRD-8160B, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
hda: max request size: 128KiB
hda: host protected area => 1
hda: 120103200 sectors (61493 MB) w/1863KiB Cache, CHS=119150/16/63, 
UDMA(100)
  hda: hda1 hda2 hda4 < hda5 hda6 hda7 >
end_request: I/O error, dev hdd, sector 0
hdd: ATAPI 48X DVD-ROM drive, 512kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.12




Andrew Morton wrote:
> Olivier NICOLAS <olivn@trollprod.org> wrote:
> 
>>It still hapen in 2.5.73-bk5
>>
>> See Sys-Rq T output in attached file
> 
> 
> This is the offending process:
> 
> pdflush       D 00000001 4294957500    10      1            11     9 (L-TLB)
> dfdd5d28 00000046 c039d540 00000001 00000003 c02450f3 d4cc7a44 dfdd5d18 
>        dfdd5d18 dfda16a0 dfdd5d1c c03d7380 dfdd7980 00000283 00000246 ce311a0c 
>        c039d540 c03d7a00 dfdd5d64 dfdd5d34 c011ddb4 ce16a888 dfdd5d90 c0160ad9 
> Call Trace:
>  [<c02450f3>] generic_unplug_device+0x83/0xc0
>  [<c011ddb4>] io_schedule+0x24/0x30
>  [<c0160ad9>] __wait_on_buffer+0x99/0xd0
>  [<c011f210>] autoremove_wake_function+0x0/0x50
>  [<c011f210>] autoremove_wake_function+0x0/0x50
>  [<c01e57dd>] flush_commit_list+0x34d/0x440
>  [<c01e9f8c>] do_journal_end+0x71c/0xbe0
>  [<c01e911d>] flush_old_commits+0x12d/0x1c0
>  [<c01b5521>] __log_start_commit+0x31/0x40
>  [<c01d6c48>] reiserfs_write_super+0xa8/0xf0
>  [<c0166784>] sync_supers+0x164/0x180
>  [<c01434d8>] wb_kupdate+0x48/0x190
>  [<c011c2e4>] schedule+0x114/0x5e0
>  [<c0143d32>] __pdflush+0x162/0x350
>  [<c0143f20>] pdflush+0x0/0x20
>  [<c0143f31>] pdflush+0x11/0x20
>  [<c0143490>] wb_kupdate+0x0/0x190
>  [<c01073b9>] kernel_thread_helper+0x5/0xc
> 
> It looks like some IO got submitted and then was simply lost.
> 
> I can see you're using SMP.  Preempt or not?
> 
> What disk controller hardware are you using? And which device drivers
> for that hardware?
> 
> 


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