Date: 20 Mar 2002 18:05:46 -0800 From: John Merryweather Cooper <john_m_cooper@yahoo.com> To: FreeBSD Stable <freebsd-stable@freebsd.org> Subject: ARGH! Trap 12 stemming from ata and/or vm_pager immediatly on boot with recently built kernel Message-ID: <1016676347.647.7.camel@johncoop.MSHOME>
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Hmmm . . ..
There seems to be a problem. Just cvsup'ed and rebuilt world and kernel
about 30 minutes ago (my Athlon 1300 rips through the build now), but
the kernel panics and issues a Trap 12 very soon after the ata driver
identifies my hard drive.
Nothing seems to have made it into dmesg or messages, but the gist of
the panic sequence is:
1) ad0, an IBM 60 gig IDE drive of very recent manufacturer (reputedly
without the buggy stuff) that supports tagged queing, is detected on the
VIA 686B;
2) tagged queing and UDMA100 are reported
3) the ata driver reports a problem about tagged=0, and resets the
controller
4) panic occurs with a Trap 12 immediately, indicate some sort of page
fault (everything flashes by rather quickly)
More upon request . . .
jmc
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