vdasa at vmware.com
2022-Mar-18 06:00 UTC
[PATCH RESEND] VMCI: Release notification_bitmap in error path
From: Vishnu Dasa <vdasa at vmware.com>
notification_bitmap may not be released when VMCI_CAPS_DMA_DATAGRAM
capability is missing from the device. Add missing
'err_free_notification_bitmap' label and use it instead of
'err_free_data_buffers' to avoid this.
Fixes: eed2298d9360 ("VMCI: dma dg: detect DMA datagram capability")
Reported-by: Dan Carpenter <dan.carpenter at oracle.com>
Reviewed-by: Bryan Tan <bryantan at vmware.com>
Reviewed-by: Rajesh Jalisatgi <rjalisatgi at vmware.com>
Signed-off-by: Vishnu Dasa <vdasa at vmware.com>
---
drivers/misc/vmw_vmci/vmci_guest.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/misc/vmw_vmci/vmci_guest.c
b/drivers/misc/vmw_vmci/vmci_guest.c
index 981b19308e6f..6596a54daa88 100644
--- a/drivers/misc/vmw_vmci/vmci_guest.c
+++ b/drivers/misc/vmw_vmci/vmci_guest.c
@@ -720,7 +720,7 @@ static int vmci_guest_probe_device(struct pci_dev *pdev,
dev_err(&pdev->dev,
"Missing capability: VMCI_CAPS_DMA_DATAGRAM\n");
error = -ENXIO;
- goto err_free_data_buffers;
+ goto err_free_notification_bitmap;
}
}
@@ -884,6 +884,7 @@ static int vmci_guest_probe_device(struct pci_dev *pdev,
vmci_dev_g = NULL;
spin_unlock_irq(&vmci_dev_spinlock);
+err_free_notification_bitmap:
if (vmci_dev->notification_bitmap) {
vmci_write_reg(vmci_dev, VMCI_CONTROL_RESET, VMCI_CONTROL_ADDR);
dma_free_coherent(&pdev->dev, PAGE_SIZE,
--
2.25.1