[Bug 237666] repeated messages of "uhub_reattach_port: giving up port reset - device vanished"

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=237666

--- Comment #80 from Hans Petter Selasky <hselasky at FreeBSD.org> ---
Are you familiar with dtrace. Could you get the backtrace of these function
calls?

kldload dtraceall

cat << EOF > dtrace.d 
#!/usr/sbin/dtrace -s

fbt::$1:entry
{
        @[probefunc, stack()] = count();
}
EOF

chmod +x dtrace.d

./dtrace.d ExPciConfigSpaceHandle

Wait, then CTRL+C

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