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Re: [BUG] IB/hfi1: might sleep under spinlock in hfi1_ioctl()

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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

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[BUG] IB/hfi1: might sleep under spinlock in hfi1_ioctl() Alexey Khoroshilov <khoroshilov@ispras.ru> - 2015-10-30 22:40 +0100
  Re: [BUG] IB/hfi1: might sleep under spinlock in hfi1_ioctl() "ira.weiny" <ira.weiny@intel.com> - 2015-10-31 01:00 +0100
    Re: [BUG] IB/hfi1: might sleep under spinlock in hfi1_ioctl() "ira.weiny" <ira.weiny@intel.com> - 2015-11-11 07:00 +0100

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