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From: "Daisuke Aoyama" <aoyama@peach.ne.jp>
To: "Roel Bouwman" <roel@bouwman.net>
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Subject: Re: FreeBSD/armv6z/clang on Raspberry Pi 512MB (with U-Boot + ubldr)
Date: Fri, 11 Jan 2013 11:34:52 +0900
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> Unfortunately, no...
> 
> FreeBSD 10.0-CURRENT #0 r244906M: Thu Jan 10 23:55:40 JST 2013
>    aoyama@fbs.local:/usr/obj-rpi-clang/arm.armv6/usr/src/sys/RPI-B-test13 arm
> ...
> pid 65 (fsck_ufs), uid 0: exited on signal 11
> panic: Bad link elm 0xc10e0984 next->prev != elm
> KDB: enter: panic
> [ thread pid 65 tid 100049 ]
> Stopped at      breakpoint:     ldrb    r15, [r15, r15, ror r15]!

My test for above case, the kernel is crashed at

pmap_nuke_pv()  at  /usr/src/sys/arm/arm/pmap-v6.c

I don't know reason.
But it seems caused after calling read_dma_next from DMA intr.

-- 
Daisuke Aoyama