On Thu, Jun 02, 2005 at 09:11:23AM -0700, Derek Kuli?ski wrote: > Hello Kris, > > Thursday, June 2, 2005, 12:37:41 AM, you wrote: > > > It looks like debugging code (it's been removed in -current). > > > Jeff: > > > in 1.141 of ffs_softdep.c you added a call to backtrace() if bp->b_vp > > == NULL..you removed it in current in 1.166, but some people are > > seeing it trigger on 5.x > > So it's harmless?
I don't know, but I presume the debugging code was added for debugging reasons :-) > As for debugging, I compiled kernel with: > makeoptions DEBUG=-g > options KDB > options KDB_TRACE > options DDB > > To have coredump, if system crashes (I didn't oticed any slowdown, so > I guess it doesn't hurt) > > Are those last three options necessary to get core? Or is only > DEBUG=-g needed? Please consult the developers' handbook chapter on kernel debugging for full instructions. Kris
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