From: Yan Zhao <yan.y.zhao@xxxxxxxxx>
[ Upstream commit 28b130244061863cf0437b7af1625fb45ec1a71e ]
When error occurs, need to put vfio group after a successful get.
Fixes: 95fc87b44104 ("vfio: Selective dirty page tracking if IOMMU backed device pins pages")
Signed-off-by: Yan Zhao <yan.y.zhao@xxxxxxxxx>
Reviewed-by: Cornelia Huck <cohuck@xxxxxxxxxx>
Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/vfio/vfio.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index 532bcaf28c11d..2151bc7f87ab1 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -1949,8 +1949,10 @@ int vfio_pin_pages(struct device *dev, unsigned long *user_pfn, int npage,
if (!group)
return -ENODEV;
- if (group->dev_counter > 1)
- return -EINVAL;
+ if (group->dev_counter > 1) {
+ ret = -EINVAL;
+ goto err_pin_pages;
+ }
ret = vfio_group_add_container_user(group);
if (ret)
--
2.25.1
