[PATCH 4.4 087/159] vfio/pci: Fix potential memory leak in vfio_msi_cap_len
From: Greg Kroah-Hartman
Date: Fri Nov 22 2019 - 05:34:53 EST
From: Li Qiang <liq3ea@xxxxxxxxx>
[ Upstream commit 30ea32ab1951c80c6113f300fce2c70cd12659e4 ]
Free allocated vdev->msi_perm in error path.
Signed-off-by: Li Qiang <liq3ea@xxxxxxxxx>
Reviewed-by: Eric Auger <eric.auger@xxxxxxxxxx>
Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/vfio/pci/vfio_pci_config.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c
index c55c632a3b249..ad5929fbceb16 100644
--- a/drivers/vfio/pci/vfio_pci_config.c
+++ b/drivers/vfio/pci/vfio_pci_config.c
@@ -1130,8 +1130,10 @@ static int vfio_msi_cap_len(struct vfio_pci_device *vdev, u8 pos)
return -ENOMEM;
ret = init_pci_cap_msi_perm(vdev->msi_perm, len, flags);
- if (ret)
+ if (ret) {
+ kfree(vdev->msi_perm);
return ret;
+ }
return len;
}
--
2.20.1