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[2/2] pci-hyperv: Fix an atomic bug

Message ID 1490378842-26950-3-git-send-email-kys@exchange.microsoft.com
State New, archived
Headers show

Commit Message

kys@exchange.microsoft.com March 24, 2017, 6:07 p.m. UTC
From: K. Y. Srinivasan <kys@microsoft.com>

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

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Cc: <stable@vger.kernel.org>
---
 drivers/pci/host/pci-hyperv.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

Comments

Long Li March 27, 2017, 6:14 p.m. UTC | #1
> -----Original Message-----
> From: devel [mailto:driverdev-devel-bounces@linuxdriverproject.org] On
> Behalf Of kys@exchange.microsoft.com
> Sent: Friday, March 24, 2017 11:07 AM
> To: helgaas@kernel.org; linux-pci@vger.kernel.org; linux-
> kernel@vger.kernel.org; devel@linuxdriverproject.org; olaf@aepfle.de;
> apw@canonical.com; vkuznets@redhat.com; jasowang@redhat.com;
> leann.ogasawara@canonical.com; marcelo.cerri@canonical.com; Stephen
> Hemminger <sthemmin@microsoft.com>
> Cc: stable@vger.kernel.org
> Subject: [PATCH 2/2] pci-hyperv: Fix an atomic bug
> 
> From: K. Y. Srinivasan <kys@microsoft.com>
> 
> The memory allocation here needs to be non-blocking.
> Fix the issue.
> 
> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
> Cc: <stable@vger.kernel.org>

Reviewed-by: Long Li <longli@microsoft.com>

> ---
>  drivers/pci/host/pci-hyperv.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/pci/host/pci-hyperv.c b/drivers/pci/host/pci-hyperv.c
> index 32a16fb..85088a1 100644
> --- a/drivers/pci/host/pci-hyperv.c
> +++ b/drivers/pci/host/pci-hyperv.c
> @@ -877,7 +877,7 @@ static void hv_compose_msi_msg(struct irq_data
> *data, struct msi_msg *msg)
>                 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;
> 
> --
> 1.7.1
> 
> _______________________________________________
> devel mailing list
> devel@linuxdriverproject.org
> http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
diff mbox

Patch

diff --git a/drivers/pci/host/pci-hyperv.c b/drivers/pci/host/pci-hyperv.c
index 32a16fb..85088a1 100644
--- a/drivers/pci/host/pci-hyperv.c
+++ b/drivers/pci/host/pci-hyperv.c
@@ -877,7 +877,7 @@  static void hv_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
 		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;