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dm: fix possible null pointer dereference in pci_gvt_deinit

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will access null pointer if 'gvt' is null.

Tracked-On: #1479
Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
Reviewed-by: He, Min <min.he@intel.com>
This commit is contained in:
Yonghua Huang 2019-04-23 01:13:20 +08:00 committed by wenlingz
parent 7bcfebc55f
commit 49563b2a11
1 changed files with 13 additions and 11 deletions
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4
devicemodel/hw/pci/gvt.c
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@ -262,7 +262,8 @@ pci_gvt_deinit(struct vmctx *ctx, struct pci_vdev *pi, char *opts)
int ret;
struct pci_gvt *gvt = pi->arg;
if (gvt && gvt->host_config) {
if (gvt) {
if (gvt->host_config) {
/* Free the allocated host_config */
free(gvt->host_config);
gvt->host_config = NULL;
@ -275,6 +276,7 @@ pci_gvt_deinit(struct vmctx *ctx, struct pci_vdev *pi, char *opts)
free(gvt);
pi->arg = NULL;
}
}
struct pci_vdev_ops pci_ops_gvt = {
.class_name = "pci-gvt",