virtio_pci: don't kfree device on register failure
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Web: https://git.kernel.org/torvalds/c/33635bd976fb4c3ccf0cfbb81a8d29bb87760607 Commit: 33635bd976fb4c3ccf0cfbb81a8d29bb87760607 Parent: f2b44cde7e1687ef7886831a3a30df653bda2481 Refname: refs/heads/master Author: weiping zhang <[email protected]> AuthorDate: Thu Dec 21 20:40:24 2017 +0800 Committer: Michael S. Tsirkin <[email protected]> CommitDate: Thu Feb 1 16:26:45 2018 +0200 virtio_pci: don't kfree device on register failure As mentioned at drivers/base/core.c: /* * NOTE: _Never_ directly free @dev after calling this function, even * if it returned an error! Always use put_device() to give up the * reference initialized in this function instead. */ so we don't free vp_dev until vp_dev->vdev.dev.release be called. Signed-off-by: weiping zhang <[email protected]> Reviewed-by: Cornelia Huck <[email protected]> Signed-off-by: Michael S. Tsirkin <[email protected]> --- drivers/virtio/virtio_pci_common.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c index 1c4797e53f68..48d4d1cf1cb6 100644 --- a/drivers/virtio/virtio_pci_common.c +++ b/drivers/virtio/virtio_pci_common.c @@ -513,7 +513,7 @@ static void virtio_pci_release_dev(struct device *_d) static int virtio_pci_probe(struct pci_dev *pci_dev, const struct pci_device_id *id) { - struct virtio_pci_device *vp_dev; + struct virtio_pci_device *vp_dev, *reg_dev = NULL; int rc; /* allocate our structure and fill it out */ @@ -551,6 +551,7 @@ static int virtio_pci_probe(struct pci_dev *pci_dev, pci_set_master(pci_dev); rc = register_virtio_device(&vp_dev->vdev); + reg_dev = vp_dev; if (rc) goto err_register; @@ -564,7 +565,10 @@ err_register: err_probe: pci_disable_device(pci_dev); err_enable_device: - kfree(vp_dev); + if (reg_dev) + put_device(&vp_dev->vdev.dev); + else + kfree(vp_dev); return rc; } -- To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html