This is a note to let you know that I've just added the patch titled
vfio-pci: Handle error from pci_iomap
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
vfio-pci-handle-error-from-pci_iomap.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Fri Aug 4 15:30:10 PDT 2017
From: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx>
Date: Tue, 3 Jan 2017 17:26:46 +0530
Subject: vfio-pci: Handle error from pci_iomap
From: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx>
[ Upstream commit e19f32da5ded958238eac1bbe001192acef191a2 ]
Here, pci_iomap can fail, handle this case release selected
pci regions and return -ENOMEM.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx>
Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/vfio/pci/vfio_pci.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/vfio/pci/vfio_pci.c
+++ b/drivers/vfio/pci/vfio_pci.c
@@ -1173,6 +1173,10 @@ static int vfio_pci_mmap(void *device_da
return ret;
vdev->barmap[index] = pci_iomap(pdev, index, 0);
+ if (!vdev->barmap[index]) {
+ pci_release_selected_regions(pdev, 1 << index);
+ return -ENOMEM;
+ }
}
vma->vm_private_data = vdev;
Patches currently in stable-queue which might be from arvind.yadav.cs@xxxxxxxxx are
queue-4.9/vfio-pci-handle-error-from-pci_iomap.patch
queue-4.9/video-fbdev-cobalt_lcdfb-handle-return-null-error-from-devm_ioremap.patch