trace_usb_port_attach prints junk data
Bug #1603785 reported by
Thomas
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
QEMU |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
Running qemu with tracing (-D ~/qemu_trace -d trace:\*) will result in a trace file with unprintable characters.
example: usb_port_attach bus 0, port 1, devspeed <90>l<DB>.<D8>U, portspeed full+high
The problem is in hw/usb/bus.c usb_mask_to_str. If speedmask doesn't match any of the defined speed nothing is written to *dest and uninitialized data is printed to the log.
This happens with a real usb device that is forwarded into the machine.
My qemu version is 2.6.0 but it looks like the problem exists in latest git also.
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This bug is still present in current head of git; I've just sent a patch: http:// patchwork. ozlabs. org/patch/ 1068196/