On Tuesday 17 February 2009, Marcel Moolenaar wrote: > Context: MACHINE=ia64, CPU=Montecito > > I'm running into a timing related MCA. In short: > ... > umass0: <HEWLETT PACKARD INTEGRITY SERVER, class 0/0, rev 2.00/0.a1, > addr 2> on usbus2 > umass0: SCSI over Bulk-Only; quirks = 0x0000 > umass0:2:0:-1: Attached to scbus2 > *** machine check abort *** > *********************************************************** > * ROM Version : 01.05 > * ROM Date : 11/06/2006 > * BMC Version : 05.06 > *********************************************************** > ... > > When I enable EHCI debugging (level 99) this does not happen > and between the debug output, I see: >
It looks like there is a timing issue there. I suspect that someone is trying to setup a USB transfer before usb2_transfer_setup() has returned. Could you get into the kernel debugger and dump "xfer->xroot" and "xfer->xroot->xfer_mtx". --HPS _______________________________________________ freebsd-usb@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "freebsd-usb-unsubscr...@freebsd.org"
