Re: kern/47041 (amd64 kernel core dumps are broken)

[Chuck Silvers <chuq%chuq.com@localhost>]

On Sat, Jan 12, 2013 at 08:16:05AM +0000, Taylor R Campbell wrote:
> Similar issue again, triggered by `sysctl -w kern.panic_now=1' while
> the machine was idle.  My wild guess is that this smells faintly like
> an ahcisata MP-safety issue.
> 
> Skipping crash dump on recursive panic
> panic: pool_get(ataspl): free list modified: magic=deaddeed; page 
> 0xfffffe8874831000; item addr 0xfffffe8874831f00
> 
> cpu18: Begin traceback...
> printf_nolog() at netbsd:printf_nolog
> pool_cache_cpu_init1() at netbsd:pool_cache_cpu_init1
> ata_get_xfer() at netbsd:ata_get_xfer+0x2d
> ahci_ata_bio() at netbsd:ahci_ata_bio+0x2f
> wddump() at netbsd:wddump+0x167
...


this ahcisata problem is reported separately in PR 41095.

-Chuck