> > There is no delay between ``kgdb waiting...'' and ``fatal breakpoint trap > > in supervisor mode''. > > Looks like that behavior was introduced by the following commit > to src/sys/arch/i386/i386/trap.c: > > ---------------------------- > revision 1.239 > date: 2008-05-30 13:38:21 +0300; author: ad; state: Exp; lines: +10 -11; > Since breakpoints don't work, dump basic info about the trap before > entering the debugger. Sometimes ddb only makes the situation worse. > ---------------------------- Yes, I've arrived at that commit too, after a longish bisect session. It's indeed the expected behavior.
I'm now bisecting 6-stable (it seems to work there indeed), vs -head; but this will take quite a while. I'll report back once I arrived somewhere. Thanks for your replies, Timo