Merge tag 'io_uring-5.6-20200320' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "Two different fixes in here:

   - Fix for a potential NULL pointer deref for links with async or
     drain marked (Pavel)

   - Fix for not properly checking RLIMIT_NOFILE for async punted
     operations.

     This affects openat/openat2, which were added this cycle, and
     accept4. I did a full audit of other cases where we might check
     current->signal->rlim[] and found only RLIMIT_FSIZE for buffered
     writes and fallocate. That one is fixed and queued for 5.7 and
     marked stable"

* tag 'io_uring-5.6-20200320' of git://git.kernel.dk/linux-block:
  io_uring: make sure accept honor rlimit nofile
  io_uring: make sure openat/openat2 honor rlimit nofile
  io_uring: NULL-deref for IOSQE_{ASYNC,DRAIN}

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