Re: [PATCH] sched: Avoid that __wait_on_bit_lock() hangs

[Bart Van Assche]

On 08/16/2016 06:06 AM, Oleg Nesterov wrote:
> If only I could reproduce. Or at least understand what are you doing to
> hit this bug ;)

Hello Oleg,

What I'm doing to hit this bug is to run the test script that is 
available at https://github.com/bvanassche/srp-test on a setup that is 
equipped with at least one InfiniBand adapter. I see the following 
possibilities for you to reproduce this:
* Ask a colleague for access to an IB setup.
* Add RoCE support to the srp-test script and run that script against a
  v4.8 kernel + ib_srp-backport + SCST ib_srpt drivers. These last two
  (out-of-tree) drivers namely support SRP over RoCE. The upstream
  drivers not yet. The SRP-over-RoCE functionality will be sent
  upstream as soon as standardization of this protocol by the T10
  committee has finished (this work has already been started and will
  probably be finished later this year).

Please let me know if you need more information.

Bart.