Asnyc BULK parsing error

[jwinarske]

I have a file that fails to parse with output looking like this:

# PCapGen device hi: selected device 0
# WARNING: Packet 3 missing submit.  URB ID: 0x0000000000120028
# WARNING: Packet 4 missing submit.  URB ID: 0x0000000000120128
# WARNING: Packet 7 missing submit.  URB ID: 0x0000000000120028
# WARNING: Packet 8 missing submit.  URB ID: 0x0000000000120128
# WARNING: Packet 11 missing submit.  URB ID: 0x00000000000E0028
# WARNING: Packet 12 missing submit.  URB ID: 0x00000000000E0128
# WARNING: Packet 15 missing submit.  URB ID: 0x0000000000180028
# WARNING: Packet 16 missing submit.  URB ID: 0x0000000000180128
# WARNING: Packet 19 missing submit.  URB ID: 0x00000000002E0028
# WARNING: Packet 20 missing submit.  URB ID: 0x00000000002E0128
# WARNING: Packet 23 missing submit.  URB ID: 0x0000000000010028
# WARNING: Packet 24 missing submit.  URB ID: 0x0000000000010128
# WARNING: Packet 26 missing submit.  URB ID: 0x0000000000FF0028
# WARNING: Packet 28 missing submit.  URB ID: 0x0000000000040128
# WARNING: Packet 31 missing submit.  URB ID: 0x0000000002040028
# WARNING: Packet 32 missing submit.  URB ID: 0x0000000000320128
# WARNING: Packet 35 missing submit.  URB ID: 0x0000000002040028
# WARNING: Packet 36 missing submit.  URB ID: 0x0000000000220128
# WARNING: Packet 39 missing submit.  URB ID: 0x0000000002040028
# WARNING: Packet 40 missing submit.  URB ID: 0x0000000000560128
oh noes!
ERROR: packet 42

[jwinarske]

This is on Linux.

Basically 10 bulk reads get scheduled per endpoint, which complete later (async). This pattern continues with 10 reads always in flight. It's used to maximize throughput.

[raleighlittles]

@jwinarske how did you run this tool? I'm also on Linux (Ubuntu 20) and the instructions didn't seem to work. I did:

• sudo pip install python-pcapng to install (from here: https://github.com/JohnDMcMaster/usbrply#linux-installation)
• usbrply --wraper --device-hi -p ~/github/ITOSAYDE-MSR-880/wireshark/magnetic-card-read-only-read-button_1-34.pcapng (from here: https://github.com/JohnDMcMaster/usbrply#sample-workflows)

But I get this error: zsh: command not found: usbrply