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dm: passthru: fix potentail mem leaks 

Fix potential memory leakage in some error case handling.

Tracked-On: #2704
Signed-off-by: Binbin Wu <binbin.wu@intel.com>
Reviewed-by: Yonghua Huang <yonghua.huang@intel.com>
This commit is contained in:
Binbin Wu 2019-03-08 10:30:07 +08:00 committed by wenlingz
parent caa291c094
commit 4d0419ed71
1 changed files with 7 additions and 4 deletions
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11
devicemodel/hw/pci/passthrough.c
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@ -793,7 +793,8 @@ passthru_init(struct vmctx *ctx, struct pci_vdev *dev, char *opts)
ptdev = calloc(1, sizeof(struct passthru_dev));
if (ptdev == NULL) {
warnx("%s: calloc FAIL!", __func__);
return -ENOMEM;
error = -ENOMEM;
goto done;
}
ptdev->phys_bdf = PCI_BDF(bus, slot, func);
@ -802,7 +803,7 @@ passthru_init(struct vmctx *ctx, struct pci_vdev *dev, char *opts)
error = pciaccess_init();
if (error < 0)
return error;
goto done;
error = -ENODEV;
iter = pci_slot_match_iterator_create(NULL);
@ -817,7 +818,7 @@ passthru_init(struct vmctx *ctx, struct pci_vdev *dev, char *opts)
if (error < 0) {
warnx("No physical PCI device %x:%x.%x!", bus, slot, func);
return -ENODEV;
goto done;
}
pci_device_probe(ptdev->phys_dev);
@ -867,7 +868,9 @@ passthru_init(struct vmctx *ctx, struct pci_vdev *dev, char *opts)
error = 0; /* success */
done:
if (error) {
free(ptdev);
if (ptdev != NULL) {
free(ptdev);
}
vm_unassign_ptdev(ctx, bus, slot, func);
}
return error;