Hello Upinder Malhi,
The patch b1819c455542: "IB/usnic: Add Cisco VIC low-level hardware
driver" from Sep 10, 2013, leads to the following Smatch
warning:
drivers/infiniband/hw/usnic/usnic_uiom.c:560
usnic_uiom_get_dev_list()
error: scheduling with locks held: 'spin_lock:lock'
drivers/infiniband/hw/usnic/usnic_uiom.c
553 struct device **usnic_uiom_get_dev_list(struct usnic_uiom_pd *pd)
554 {
555 struct usnic_uiom_dev *uiom_dev;
556 struct device **devs;
557 int i = 0;
558
559 spin_lock(&pd->lock);
560 devs = kzalloc(sizeof(*devs)*(pd->dev_cnt + 1), GFP_KERNEL);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
You can't do blocking allocations with a spin_lock held.
561 if (!devs) {
562 devs = ERR_PTR(-ENOMEM);
563 goto out;
564 }
regards,
dan carpenter
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