Date: Sun, 30 Aug 2009 20:47:41 +0100 (BST) From: Gavin Atkinson <gavin@FreeBSD.org> To: Richard Mahlerwein <mahlerrd@yahoo.com> Cc: FreeBSD-Stable <freebsd-stable@FreeBSD.org> Subject: Re: Fatal Trap 12 in various processes always at address 0x3030313a Message-ID: <20090830203732.L24691@ury.york.ac.uk> In-Reply-To: <772579.96245.qm@web51002.mail.re2.yahoo.com> References: <772579.96245.qm@web51002.mail.re2.yahoo.com>
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This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --0-414534141-1251661661=:24691 Content-Type: TEXT/PLAIN; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE On Sat, 29 Aug 2009, Richard Mahlerwein wrote: > (Sorry, update to subject to be <something>) > > 3 weeks ago: > I upgraded from 7.1-PRELEASE to -stable and all seemed fine > until I rebooted out of single user mode after doing make > installworld and mergemaster.=A0 At that point, near the > end of the boot sequence I got a core dump, apparently > triggered by devd. >=20 > **** > Fatal trap 12: page fault while in kernel mode. > cpu id =3D 0; apic id =3D 00 > fault virtual address =3D 0x3030313a > fault code =3D supervisor write, page not present > [snip] > current process =3D 355 (devd) > **** >=20 > [snip] > Does anyone have a further recommendation on what to do, > try, test or change? Firstly, please set up a dump partition by adding 'dumpdev=3D"AUTO"' to=20 your rc.conf. Then, can you compile in the kernel debugger (options KGB / options DDB)=20 and when this happens again, please obtain a backtrace from the debugger=20 with the "bt" command. Then, give the "show registers" command so that we= =20 can establish which register is pointing to the odd address. Finally,=20 issue the "call doadump()" command to hopefully save a copy of the kernel= =20 dump for later analysis. Thanks, Gavin --0-414534141-1251661661=:24691--
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