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

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

From: Chuck Silvers <>
To: Taylor R Campbell <>
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.

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