Bug exists in latest stable (0.12.4) but it's fixed in current master,
I'll backport the commits.
** Changed in: qemu
Status: New => In Progress
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QEMU 0.12.3 crashes on incomplete USB serial device parameter
https://bugs.launchpad.net/bugs/573827
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Status in QEMU: In Progress
Bug description:
When calling qemu by "qemu -usbdevice serial" (i.e. with an incomplete
specification of the USB serial device),
qemu crashes with a segfault.
Debugging the problem has revealed that usb_serial_init() in usb-serial.c does
not handle the incomplete parameter.
The attached patch fixes the issue.
