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

From: Greg Kroah-Hartman
Date: Tue May 23 2017 - 18:01:59 EST


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;