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| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2022-02-24 21:22:37 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-25 11:55:01 +0100 |
| commit | 77e861619baea5a7c934e47fda74b03c0b072aec (patch) | |
| tree | 28014acea236be5a27638ceaa9c456c573c2d8d6 /drivers/misc/vmw_vmci | |
| parent | VMCI: No need to clear memory after a dma_alloc_coherent() call (diff) | |
| download | linux-77e861619baea5a7c934e47fda74b03c0b072aec.tar.xz linux-77e861619baea5a7c934e47fda74b03c0b072aec.zip | |
VMCI: Fix some error handling paths in vmci_guest_probe_device()
The 'err_remove_vmci_dev_g' error label is not at the right place.
This could lead to un-released resource.
There is also a missing label. If pci_alloc_irq_vectors() fails, the
previous vmci_event_subscribe() call must be undone.
Acked-by: Vishnu Dasa <vdasa@vmware.com>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/959218ce3b135197946d85cd9453551cd04fa5da.1645734041.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/vmw_vmci')
| -rw-r--r-- | drivers/misc/vmw_vmci/vmci_guest.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/misc/vmw_vmci/vmci_guest.c b/drivers/misc/vmw_vmci/vmci_guest.c index 02d4722d8474..981b19308e6f 100644 --- a/drivers/misc/vmw_vmci/vmci_guest.c +++ b/drivers/misc/vmw_vmci/vmci_guest.c @@ -765,7 +765,7 @@ static int vmci_guest_probe_device(struct pci_dev *pdev, /* Check host capabilities. */ error = vmci_check_host_caps(pdev); if (error) - goto err_remove_bitmap; + goto err_remove_vmci_dev_g; /* Enable device. */ @@ -795,7 +795,7 @@ static int vmci_guest_probe_device(struct pci_dev *pdev, error = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSIX | PCI_IRQ_MSI | PCI_IRQ_LEGACY); if (error < 0) - goto err_remove_bitmap; + goto err_unsubscribe_event; } else { vmci_dev->exclusive_vectors = true; } @@ -871,13 +871,19 @@ err_free_irq: err_disable_msi: pci_free_irq_vectors(pdev); +err_unsubscribe_event: vmci_err = vmci_event_unsubscribe(ctx_update_sub_id); if (vmci_err < VMCI_SUCCESS) dev_warn(&pdev->dev, "Failed to unsubscribe from event (type=%d) with subscriber (ID=0x%x): %d\n", VMCI_EVENT_CTX_ID_UPDATE, ctx_update_sub_id, vmci_err); -err_remove_bitmap: +err_remove_vmci_dev_g: + spin_lock_irq(&vmci_dev_spinlock); + vmci_pdev = NULL; + vmci_dev_g = NULL; + spin_unlock_irq(&vmci_dev_spinlock); + if (vmci_dev->notification_bitmap) { vmci_write_reg(vmci_dev, VMCI_CONTROL_RESET, VMCI_CONTROL_ADDR); dma_free_coherent(&pdev->dev, PAGE_SIZE, @@ -885,12 +891,6 @@ err_remove_bitmap: vmci_dev->notification_base); } -err_remove_vmci_dev_g: - spin_lock_irq(&vmci_dev_spinlock); - vmci_pdev = NULL; - vmci_dev_g = NULL; - spin_unlock_irq(&vmci_dev_spinlock); - err_free_data_buffers: vmci_free_dg_buffers(vmci_dev); |