[ldv-project] [BUG] IB/hfi1: might sleep under spinlock in hfi1_ioctl()

[ira.weiny]

On Sat, Oct 31, 2015 at 12:32:29AM +0300, Alexey Khoroshilov wrote:
> Hello,
> 
> hfi1_ioctl() contains many calls to might sleep functions with
> dd->hfi1_snoop.snoop_lock spinlock held (for example, access_ok,
> copy_from_user, kzalloc(GFP_KERNEL), etc.).
> 
> Should dd->hfi1_snoop.snoop_lock be acquired just before updating state?

I believe you are correct.

I am currently in the process of pushing fixes to the staging tree.

We have a patch which fixes this queued up but it depends on at least one other
patch in my queue.

I will do my best to get this submitted soon.

Thanks,
Ira