>Number:         35299
>Category:       port-sparc64
>Synopsis:       large reads of a Firewire HDD on sparc64 panic the kernel
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-sparc64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Dec 20 18:45:00 +0000 2006
>Originator:     Jonathan A. Kollasch
>Release:        NetBSD 4.99.6, a day or so old
>Environment:
>Description:

one of these:

panic("ds_len > SBP_SEG_MAX, fix busdma code");

lines in sbp.c is getting executed.

>How-To-Repeat:

attach firewire hdd, then

dd if=/dev/rsd0c of=/dev/null bs=64k count=64k

and see the lovely panic message come up :[

This works for .5KiB blocks FWIW, but that is slower.

>Fix:

unknown.