6.1 kernel panic

[Steven Hartland]

Removing the following fixes the compile hang yet results
in the array going offline with WRITE_DMA errors.
options INVARIANTS
options INVARIANT_SUPPORT
options WITNESS
options WITNESS_SKIPSPIN

I'm rapidly coming to the conclusion there is something quite
broken with driver support for 0+1 on this chipset ( Promise PDC20267 ).

Steven Hartland wrote:
> I've been trying to obtain one but am having no luck.
> 
> These are the options of added to the kernel as well as
> enabling dump using dumpon="AUTO" in rc.conf:
> makeoptions    DEBUG=-g        # Build kernel with gdb(1) debug
> symbols 
> options    KTRACE          # ktrace(1) support
> options KDB
> options DDB
> options GDB
> options INVARIANTS
> options INVARIANT_SUPPORT
> options WITNESS
> options WITNESS_SKIPSPIN
> 
> Unfortunately these are having some very strange results.
> With the above make -j8 buildworld now hangs using 100 of
> a processor at the following point:
> [hang 100%]
> mkdep -f
> .depend -a    -I/usr/obj/usr/src/tmp/legacy/usr/include
> -I/usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/lib
> -I/usr/src/gnu/usr.bin/gperf
> /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/bool-array.cc
> /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/gen-perf.cc
> /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/hash-table.cc
> /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/iterator.cc
> /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/key-list.cc
> /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/list-node.cc
> /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/main.cc
> /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/new.cc
> /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/options.cc
> /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/read-line.cc
> /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/trace.cc
> /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/vectors.cc
> /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/version.cc
> /usr/src/gnu/usr.bin/gperf/../../../contrib/gperf/lib/hash.cc [/hang
> 100%]       
> 
> [top]
>  PID USERNAME  THR PRI NICE   SIZE    RES STATE  C   TIME   WCPU
> COMMAND 1439 root        1 100    0  4620K   568K CPU1   0   5:02
> 99.17% cc1plus [/top]
> 
> I know a dual 1.2Ghz PIII is not quick but after 10mins it should be
> done with this simple step.
> 
> Other testing has shown that the crashes may be related to
> the RAID in 0+1. After the first crash the raid is in critical
> and from then no matter what I try I cant force the panic.


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