In the original code, we set "fd->uctxt" to NULL and then dereference it
which will cause an Oops.
Fixes:
f2a3bc00a03c ("IB/hfi1: Protect context array set/clear with spinlock")
Cc: <stable@vger.kernel.org> # 4.14.x
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
}
if (ret) {
- hfi1_rcd_put(fd->uctxt);
- fd->uctxt = NULL;
spin_lock_irqsave(&fd->dd->uctxt_lock, flags);
__clear_bit(fd->subctxt, fd->uctxt->in_use_ctxts);
spin_unlock_irqrestore(&fd->dd->uctxt_lock, flags);
+ hfi1_rcd_put(fd->uctxt);
+ fd->uctxt = NULL;
}
return ret;