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** Changed in: qemu Status: New => Incomplete -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1707587 Title: Read certificate from USB key failed Status in QEMU: Incomplete Bug description: QEMU release version: qemu-2.9.0 VM operation system: win7 32bit I have an usb key which can be redirected and recognized in VM. However, it is failed to get the certificate when using the official application for this usb key. What's more, the whole app is stalled untill this usb key detached from VM. As I researched, this usb key uses interrupt transfers when application trying to read certificate from it. Problem is that some certificate data abandoned by "usbredir_stop_interrupt_receiving" and "usbredir_stop_ep". The two functions use "usbredir_free_bufpq" to clear the buffered usb packets, even the certificate remain in the bufpq. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1707587/+subscriptions