On Tue, Jun 15, David Brownell wrote:
> Richard Curnow wrote:
> >
> >One problem I'm hitting is in EHCI, I was wondering if you had any ideas
> >as to what I could start looking at, annotating etc to debug this. The
> >problem seems to be here:
> >
> >static inline void list_del(struct list_head *entry)
> >{
> > __list_del(entry->prev, entry->next); <<<<<======= HERE
> > entry->next = LIST_POISON1;
> > entry->prev = LIST_POISON2;
> >}
>
> Hmm, I'll have to look at this some more. Some folk have been
> reporting list_del() problems for QTDs on SMP hardware; in fact
> there's now a bug on this at bugme.osdl.org and you might be
> hitting something similar.
We still see this on x86_64, with our sles9 kernel (based on 2.6.6) and
also with 2.6.8-rc. I dont have a backtrace for the 2.6.8 kernel, yet.
Takes one or two hours to reproduce.
...
* How to reproduce:
perform heavy I/O load on a USB 2.0 device. I am using a USB 2.0
harddisk and running several bonnies in a loop on it.
...
--
USB is for mice, FireWire is for men!
sUse lINUX ag, nÃRNBERG
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