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hv: fix potential NULL pointer dereferrence in ivshmem.c 

secure coding fix.

Tracked-On: #8566
Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>
This commit is contained in:
Yonghua Huang 2024-04-10 18:53:27 +08:00 committed by acrnsi-robot
parent 93256648f5
commit d5d21fdc1b
1 changed files with 4 additions and 1 deletions
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5
hypervisor/dm/vpci/ivshmem.c
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@ -343,7 +343,10 @@ static void init_ivshmem_vdev(struct pci_vdev *vdev)
PCIM_HDRTYPE_NORMAL | ((vdev->bdf.bits.f == 0U) ? PCIM_MFDEV : 0U));
pci_vdev_write_vcfg(vdev, PCIV_SUB_VENDOR_ID, 2U, IVSHMEM_INTEL_SUBVENDOR_ID);
pci_vdev_write_vcfg(vdev, PCIV_SUB_SYSTEM_ID, 2U, region->region_id);
if (region != NULL) {
pci_vdev_write_vcfg(vdev, PCIV_SUB_SYSTEM_ID, 2U, region->region_id);
}
add_vmsix_capability(vdev, MAX_IVSHMEM_MSIX_TBL_ENTRY_NUM, IVSHMEM_MSIX_BAR);
/* initialize ivshmem bars */