[PATCH 4.11 177/197] PCI: hv: Allocate interrupt descriptors with GFP_ATOMIC

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4.11-stable review patch.  If anyone has any objections, please let me know.

------------------

From: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>

commit 59c58ceeea9cdc6144d7b0303753e6bd26d87455 upstream.

The memory allocation here needs to be non-blocking.  Fix the issue.

Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Reviewed-by: Long Li <longli@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/pci/host/pci-hyperv.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/pci/host/pci-hyperv.c
+++ b/drivers/pci/host/pci-hyperv.c
@@ -876,7 +876,7 @@ static void hv_compose_msi_msg(struct ir
 		hv_int_desc_free(hpdev, int_desc);
 	}
 
-	int_desc = kzalloc(sizeof(*int_desc), GFP_KERNEL);
+	int_desc = kzalloc(sizeof(*int_desc), GFP_ATOMIC);
 	if (!int_desc)
 		goto drop_reference;
 





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