Gathering Hardware State During a Driver Initiated Kernel Panic

David Christensen davidch at
Mon Nov 24 13:46:15 PST 2008

Is there a method or callback in FreeBSD where a driver can 
be notified that it has caused a kernel panic in order to 
generate a dump of internal hardware state information?  I've
written a sysctl call for manual intervention and can handle
some "expected" hardware events completely in the driver but
I don't know of a way to get control again in cases where the 
driver wasn't expecting a failure.


More information about the freebsd-net mailing list