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

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

The following reply was made to PR kern/47041; it has been noted by GNATS.

From: Chuck Silvers <chuq%chuq.com@localhost>
To: Taylor R Campbell <campbell+netbsd%mumble.net@localhost>
Cc: gnats-bugs%NetBSD.org@localhost, kern-bug-people%netbsd.org@localhost,
        netbsd-bugs%netbsd.org@localhost, gnats-admin%netbsd.org@localhost
Subject: Re: kern/47041 (amd64 kernel core dumps are broken)
Date: Sat, 12 Jan 2013 08:27:22 -0800

 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