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

[Taylor R Campbell <campbell+netbsd%mumble.net@localhost>]

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

From: Taylor R Campbell <campbell+netbsd%mumble.net@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: chs%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 08:16:05 +0000

 Similar issue again, triggered by `sysctl -w kern.panic_now=3D1' 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=3Ddeaddeed; page 0xfffff=
 e8874831000; 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
 raiddump() at netbsd:raiddump+0x227
 dumpsys_seg() at netbsd:dumpsys_seg+0xbc
 dump_seg_iter() at netbsd:dump_seg_iter+0xfb
 dodumpsys() at netbsd:dodumpsys+0x267
 dumpsys() at netbsd:dumpsys+0x1d
 vpanic() at netbsd:vpanic+0x1dd
 printf_nolog() at netbsd:printf_nolog
 fill_lwp() at netbsd:fill_lwp
 sysctl_dispatch() at netbsd:sysctl_dispatch+0xc6
 sys___sysctl() at netbsd:sys___sysctl+0xeb
 syscall() at netbsd:syscall+0x94
 --- syscall (number 202) ---
 7f7ff74e024a:
 cpu18: End traceback...
 rebooting...