Re: kern/48954: USB diagconstic message: actlen (-15996) > len (4)

[Alexander Nasonov <alnsn%yandex.ru@localhost>]

Nick Hudson wrote:
>  Does disabling IPv6 on your machine help?

It makes no difference.

After spending a bit more time looking at the bug, I found out that
dmesg doesn't report stacktrace correctly. The kernel crashed in the
usbd_setup_xfer at the instruction that corresponds to the first line
of the function:

        xfer->pipe = pipe;

Also, I got three more crashes from ehci_softintr. Two crashes were at
memcpy+0x14 and the third was at

crash> x/i 0xffffffff802a0582
ehci_idone+0xa9:        movslq  58 (%r14),%rsi

The new kernel doesn't have DIAGNOSTIC so I don't know whether the
crashes in memcpy were preceeded by any diagnostic messages.

Alex