4.9-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 @@ -868,7 +868,7 @@ 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;