On Monday 07 February 2005 11:18 am, Alan Stern wrote:
> > I am already running 2.6.11-rc3 and the problem has not gone away. Are
> > there any relevant fixes in -bk?
>
> No.
>
> > Attached is the bootup log after enabling CONFIG_USB_STORAGE_DEBUG.
>
> You said that the system hangs during bootup. �Where in the log does that
> hang occur? �The log itself looks perfectly normal. �The Maxtor drive is
> scanned, the partitions detected, and then apparently one or two
> partitions are mounted. �There's no indication of any problem.
I have tracked down the reason for this hang - it seems that kudzu gets stuck
in D state on usb_device_read - Below SysRQ+T from 2.6.11-rc4 - always
reproducible.
kudzu D 00000000ffffffff 0 4424 4472
(NOTLB)
ffff81002bebfd98 0000000000000086 ffff81002c538150 ffff81002f21d00e
000000078847ce40 ffff81002b5977c0 000000000000fd38 ffffffff803defc0
ffff81002bebfd88 ffffffff80219b32
Call Trace:
<ffffffff80219b32>{_atomic_dec_and_lock+290} <ffffffff80383835>{__down+421}
<ffffffff80133e30>{default_wake_function+0}
<ffffffff803868ae>{__down_failed+53}
<ffffffff802db9f1>{.text.lock.usb+5}
<ffffffff802edb35>{usb_device_read+229}
<ffffffff801998d1>{vfs_read+225} <ffffffff80199bd0>{sys_read+80}
<ffffffff8010ed1e>{system_call+126}
Thereafter, if I try to mount the USB drive, even mount gets stuck.
Parag
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