Re: Yet another SDET hang (73-mm3) ... yawn

From: Benjamin Stuhl (
Date: Thu Jul 03 2003 - 10:30:21 EST

"Martin J. Bligh" <> wrote:
> 2.5.73-mm3 + feral + highpte (ext2)
> Seems to be all wedged up on io_schedule. Not sure if it
> highpte that caused this or not, but I'd done one run on
> and one on ext3 without it, and they worked fine.

I have been wrestling myself with D state hangs (ext3/
reiserfs) in 2.5.7X-mmY for a while now, but haven't been
able to capture a sysrq-T. I have a question, though
(inspired by the trace you got): who does a finish_wait()
for a !is_sync_wait() process after
or __wait_on_buffer_wq()? Both of these functions can
return after a prepare_to_wait() without a matching

So perhaps you could try backing out the aio-* patches?
a thought.

Please CC: me; I only read the archives.

-- BKS

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