Date: Thu, 15 Apr 2004 21:54:54 -0700 From: Kris Kennaway <kris@obsecurity.org> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: kris@obsecurity.org Subject: Re: Another alpha panic Message-ID: <20040416045453.GA78366@xor.obsecurity.org> In-Reply-To: <16509.42895.49213.222503@grasshopper.cs.duke.edu> References: <20040411093343.GA89809@xor.obsecurity.org> <200404132236.20792.jhb@FreeBSD.org> <16509.42895.49213.222503@grasshopper.cs.duke.edu>
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--17pEHd4RhPHOinZp Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Apr 14, 2004 at 05:05:19PM -0400, Andrew Gallatin wrote: >=20 > John Baldwin writes: > > On Sunday 11 April 2004 05:33 am, Kris Kennaway wrote: > > > Not that I've had any luck getting someone to take a look at the last > > > half-dozen alpha panics I've reported, but: > > > > > > panic: pmap_emulate_reference(0xfffffc0019436a00, 0xfffffe0014495e68= , 0, > > > 1): pa 0xb0a0000 not managed at line 2585 in file > > > /a/asami/portbuild/alpha/src-client/sys/alpha/alpha/pmap.c Stack bac= ktrace: > > > db_print_backtrace() at db_print_backtrace+0x18 > > > backtrace() at backtrace+0x2c > > > __panic() at __panic+0x150 > > > pmap_emulate_reference() at pmap_emulate_reference+0x15c > > > trap() at trap+0x39c > > > XentMM() at XentMM+0x2c > > > --- memory management fault (from ipl 7) --- > > > pmap_activate() at pmap_activate+0xb4 > > > Lcs1() at Lcs1+0x1c > > > --- root of call graph --- > >=20 > > This is a VM-related panic. Perhaps alc@ might have an idea. There m= ight be=20 > > a reference fault on a K0SEG address or some other silly bug. >=20 > I just googled and saw that at least 2 of these have come with the > same stack (context-switch(), pmap_activate()). What does > pmap_activate+0xb4 map to in your kernel? 0xfffffc00005cf164 is in pmap_activate (/a/asami/portbuild/alpha/src-client= /sys/alpha/alpha/pmap.c:2740). This is a kernel from Mar 6. > What sort of machine? Is this UP or SMP? Apr 11 19:11:40 axp0 kernel: COMPAQ AlphaServer DS10 466 MHz, 462MHz Apr 11 19:11:40 axp0 kernel: 8192 byte page size, 1 processor. Apr 11 19:11:40 axp0 kernel: CPU: EV6 (21264) major=3D8 minor=3D4 extension= s=3D0x303<BWX,FIX,MVI,PRECISE> Apr 11 19:11:40 axp0 kernel: OSF PAL rev: 0x1003300020133 Kris --17pEHd4RhPHOinZp Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFAf2cdWry0BWjoQKURAu8EAKCMSfATC8I5BJmcaZlAwgTBoTrj7ACcDE6c /OlRRPR5ki96mHwYjF2PMrQ= =FDQm -----END PGP SIGNATURE----- --17pEHd4RhPHOinZp--
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