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由 Ryan Harper 提交于
If a user decides to punish a guest by revoking its block device via drive_del, and subsequently also attempts to remove the pci device backing it, and the device is using blockdev_auto_del() then we get a segfault when we attempt to access dinfo->auto_del.[1] The fix is to check if drive_get_by_blockdev() actually returns a valid dinfo pointer or not. 1. (qemu) pci_add auto storage file=images/test01.raw,if=virtio,id=block1,snapshot=on (qemu) drive_del block1 (qemu) pci_del 5 *segfault* Signed-off-by: NRyan Harper <ryanh@us.ibm.com> Tested-by: NLuiz Capitulino <lcapitulino@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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