Re: INFO: rcu detected stall in hub_event

[Alan Stern]

On Tue, 26 Nov 2019, Jiri Kosina wrote:

> On Mon, 25 Nov 2019, Alan Stern wrote:
> 
> > #syz test: https://github.com/google/kasan.git 46178223
> 
> Alan, did you get a test result from syzbot on this patch? My mailbox 
> doesn't seem to have it.

No response, not yet.  syzbot seems to be very slow testing the patches
for this bug report.  The earlier ones I submitted also took over a day
to finish.

BTW, even if this patch fixes the problem, I don't think setting 
collection[0].parent_idx to -1 is a very good solution.  It's brittle 
and doesn't address the underlying ambiguity.

Alan Stern