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hv: check the validity of 'pdev' in 'set_ptdev_intr_info'
This patch checks the validity of 'vdev->pdev' to ensure physical device is linked to 'vdev'. this check is to avoid some potential hypervisor crash when destroying VM with crafted input. Tracked-On: #4336 Signed-off-by: Yonghua Huang <yonghua.huang@intel.com> Reviewed-by: Fei Li <fei1.li@intel.com>
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