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SubjectRe: 2.5.7x: processes in D state
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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