Date: Thu, 22 May 2014 14:51:04 +0700 From: Alexey Dokuchaev <danfe@nsu.ru> To: Justin Hibbits <chmeeedalf@gmail.com> Cc: FreeBSD PowerPC ML <freebsd-ppc@freebsd.org> Subject: Re: DSI when in dhclient Message-ID: <20140522075104.GA19283@regency.nsu.ru> In-Reply-To: <20140511175007.721425b1@zhabar.att.net> References: <20140511175007.721425b1@zhabar.att.net>
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On Sun, May 11, 2014 at 05:50:07PM -0700, Justin Hibbits wrote: > Something odd I've been running into lately on 32-bit powerpc, when I > run dhclient on an interface, I get a Data Storage Interrupt dropping > me to ddb. It happens when dhclient is spawning /usr/sbin/arp, and I > don't know why. I can write directly to the page it's trying to write > into. [...] Does anyone else see this? I sometimes get dropped to ddb(4) due to DSI on Mac mini G4 but unrelated to dhclient(8); however, I have a question about kernel debugging, so I'd chime in. :) While at db> prompt, I can see the backtrace and even "call doadump" to save some 37MB of memory. On subsequent reboot, usual set of files under /var/crash is generated, but running kgdb(1) on them for postmortem shows nothing except couple of question marks. Is crashdump saving/reading is broken on PowerPC these days, or I'm just doing it wrongly? ./danfe
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