From owner-freebsd-current@FreeBSD.ORG Sun Jan 13 17:57:03 2013 Return-Path: Delivered-To: freebsd-current@FreeBSD.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id A2979D94; Sun, 13 Jan 2013 17:57:03 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from kib.kiev.ua (kib.kiev.ua [IPv6:2001:470:d5e7:1::1]) by mx1.freebsd.org (Postfix) with ESMTP id F267418D; Sun, 13 Jan 2013 17:57:02 +0000 (UTC) Received: from tom.home (kostik@localhost [127.0.0.1]) by kib.kiev.ua (8.14.6/8.14.6) with ESMTP id r0DHuvuL073195; Sun, 13 Jan 2013 19:56:57 +0200 (EET) (envelope-from kostikbel@gmail.com) DKIM-Filter: OpenDKIM Filter v2.7.4 kib.kiev.ua r0DHuvuL073195 Received: (from kostik@localhost) by tom.home (8.14.6/8.14.6/Submit) id r0DHuvQo073194; Sun, 13 Jan 2013 19:56:57 +0200 (EET) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: tom.home: kostik set sender to kostikbel@gmail.com using -f Date: Sun, 13 Jan 2013 19:56:56 +0200 From: Konstantin Belousov To: Glen Barber Subject: Re: [panic] Unknown caching mode 8198 in sys/amd64/amd64/pmap.c Message-ID: <20130113175656.GC2561@kib.kiev.ua> References: <20130111200952.GA1359@glenbarber.us> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="+vLU48aB4xoY1VIb" Content-Disposition: inline In-Reply-To: <20130111200952.GA1359@glenbarber.us> User-Agent: Mutt/1.5.21 (2010-09-15) X-Spam-Status: No, score=-2.0 required=5.0 tests=ALL_TRUSTED,BAYES_00, DKIM_ADSP_CUSTOM_MED,FREEMAIL_FROM,NML_ADSP_CUSTOM_MED autolearn=no version=3.3.2 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on tom.home Cc: freebsd-current@FreeBSD.org X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 13 Jan 2013 17:57:03 -0000 --+vLU48aB4xoY1VIb Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Jan 11, 2013 at 03:09:52PM -0500, Glen Barber wrote: > Hi, >=20 > I'm running a relatively recent -CURRENT: >=20 > root@nucleus:/usr/obj/usr/src/sys/NUCLEUS # uname -a > FreeBSD nucleus 10.0-CURRENT FreeBSD 10.0-CURRENT #50 r244773: Mon Dec > 31 16:07:53 EST 2012 root@nucleus:/usr/obj/usr/src/sys/NUCLEUS amd64 >=20 > I ran into this panic twice over the past 24 hours. Both times, > Chromium was the program I was actively using, with a few ssh sessions > in the background. >=20 > Below follows kgdb session and hopefully useful information. Any advice > on how to further debug this would be appreciated. >=20 > Glen >=20 >=20 > Script started on Fri Jan 11 14:58:16 2013 > root@nucleus:/usr/obj/usr/src/sys/NUCLEUS # kgdb kernel.debug /var/crash/= vmcore.6 > GNU gdb 6.1.1 [FreeBSD] > Copyright 2004 Free Software Foundation, Inc. > GDB is free software, covered by the GNU General Public License, and you = are > welcome to change it and/or distribute copies of it under certain conditi= ons. > Type "show copying" to see the conditions. > There is absolutely no warranty for GDB. Type "show warranty" for detail= s. > This GDB was configured as "amd64-marcel-freebsd"... >=20 > Unread portion of the kernel message buffer: > panic: Unknown caching mode 8198 >=20 > cpuid =3D 3 > KDB: stack backtrace: > #0 0xffffffff80605a76 at kdb_backtrace+0x66 > #1 0xffffffff805cbbbb at panic+0x13b > #2 0xffffffff80879748 at pmap_cache_bits+0x58 > #3 0xffffffff80880fb4 at pmap_enter+0xa4 > #4 0xffffffff8084ed25 at vm_fault_hold+0x1a15 > #5 0xffffffff8084f8d3 at vm_fault+0x73 > #6 0xffffffff8088593a at trap_pfault+0x13a > #7 0xffffffff80886184 at trap+0x4f4 > #8 0xffffffff8086f853 at calltrap+0x8 > Uptime: 1d14h30m4s > Dumping 4646 out of 7951 MB:..1%..11%..21%..31%..41%..51%..61%..71%..81%.= =2E91% >=20 > Reading symbols from /boot/kernel/zfs.ko...Reading symbols from /bootdir/= boot/kernel/zfs.ko.symbols...done. > done. > Loaded symbols for /boot/kernel/zfs.ko > Reading symbols from /boot/kernel/opensolaris.ko...Reading symbols from /= bootdir/boot/kernel/opensolaris.ko.symbols...done. > done. > Loaded symbols for /boot/kernel/opensolaris.ko > Reading symbols from /boot/kernel/geom_eli.ko...Reading symbols from /boo= tdir/boot/kernel/geom_eli.ko.symbols...done. > done. > Loaded symbols for /boot/kernel/geom_eli.ko > Reading symbols from /boot/kernel/linux.ko...Reading symbols from /bootdi= r/boot/kernel/linux.ko.symbols...done. > done. > Loaded symbols for /boot/kernel/linux.ko > Reading symbols from /boot/kernel/coretemp.ko...Reading symbols from /boo= tdir/boot/kernel/coretemp.ko.symbols...done. > done. > Loaded symbols for /boot/kernel/coretemp.ko > Reading symbols from /boot/kernel/acpi_video.ko...Reading symbols from /b= ootdir/boot/kernel/acpi_video.ko.symbols...done. > done. > Loaded symbols for /boot/kernel/acpi_video.ko > Reading symbols from /boot/kernel/sem.ko...Reading symbols from /bootdir/= boot/kernel/sem.ko.symbols...done. > done. > Loaded symbols for /boot/kernel/sem.ko > Reading symbols from /boot/kernel/acpi_asus.ko...Reading symbols from /bo= otdir/boot/kernel/acpi_asus.ko.symbols...done. > done. > Loaded symbols for /boot/kernel/acpi_asus.ko > Reading symbols from /boot/kernel/aesni.ko...Reading symbols from /bootdi= r/boot/kernel/aesni.ko.symbols...done. > done. > Loaded symbols for /boot/kernel/aesni.ko > Reading symbols from /boot/kernel/pf.ko...Reading symbols from /bootdir/b= oot/kernel/pf.ko.symbols...done. > done. > Loaded symbols for /boot/kernel/pf.ko > Reading symbols from /boot/kernel/i915kms.ko...Reading symbols from /boot= dir/boot/kernel/i915kms.ko.symbols...done. > done. > Loaded symbols for /boot/kernel/i915kms.ko > Reading symbols from /boot/kernel/iicbb.ko...Reading symbols from /bootdi= r/boot/kernel/iicbb.ko.symbols...done. > done. > Loaded symbols for /boot/kernel/iicbb.ko > Reading symbols from /boot/kernel/iicbus.ko...Reading symbols from /bootd= ir/boot/kernel/iicbus.ko.symbols...done. > done. > Loaded symbols for /boot/kernel/iicbus.ko > Reading symbols from /boot/kernel/iic.ko...Reading symbols from /bootdir/= boot/kernel/iic.ko.symbols...done. > done. > Loaded symbols for /boot/kernel/iic.ko > Reading symbols from /boot/kernel/agp.ko...Reading symbols from /bootdir/= boot/kernel/agp.ko.symbols...done. > done. > Loaded symbols for /boot/kernel/agp.ko > Reading symbols from /boot/kernel/drm2.ko...Reading symbols from /bootdir= /boot/kernel/drm2.ko.symbols...done. > done. > Loaded symbols for /boot/kernel/drm2.ko > Reading symbols from /usr/local/libexec/linux_adobe/linux_adobe.ko...done. > Loaded symbols for /usr/local/libexec/linux_adobe/linux_adobe.ko > #0 doadump (textdump=3D) at pcpu.h:229 > 229 __asm("movq %%gs:%1,%0" : "=3Dr" (td) > (kgdb) bt > #0 doadump (textdump=3D) at pcpu.h:229 > #1 0xffffffff805cb724 in kern_reboot (howto=3D260) at /usr/src/sys/kern/= kern_shutdown.c:446 > #2 0xffffffff805cbba5 in panic (fmt=3D) at /usr/src= /sys/kern/kern_shutdown.c:753 > #3 0xffffffff80879748 in pmap_cache_bits (mode=3D, = is_pde=3D) > at /usr/src/sys/amd64/amd64/pmap.c:863 > #4 0xffffffff80880fb4 in pmap_enter (pmap=3D0xfffffe01bfa66440, va=3D346= 36066816, access=3D,=20 > m=3D0xfffffe023dfc1b70, prot=3D, wired=3D) > at /usr/src/sys/amd64/amd64/pmap.c:3456 > #5 0xffffffff8084ed25 in vm_fault_hold (map=3D0xfffffe01bfa66310, vaddr= =3D34636066816, fault_type=3D1 '\001',=20 > fault_flags=3D, m_hold=3D0x0) at /usr/src/sys/vm= /vm_fault.c:914 > #6 0xffffffff8084f8d3 in vm_fault (map=3D0xfffffe01bfa66310, vaddr=3D346= 36066816,=20 > fault_type=3D, fault_flags=3D0) at /usr/src/sys/= vm/vm_fault.c:224 > #7 0xffffffff8088593a in trap_pfault (frame=3D0xffffff8239b37ac0, usermo= de=3D1) > at /usr/src/sys/amd64/amd64/trap.c:756 > #8 0xffffffff80886184 in trap (frame=3D0xffffff8239b37ac0) at /usr/src/s= ys/amd64/amd64/trap.c:363 > #9 0xffffffff8086f853 in calltrap () at /usr/src/sys/amd64/amd64/excepti= on.S:228 > #10 0x000000080b0f2200 in ?? () > Previous frame inner to this frame (corrupt stack?) > (kgdb) frame 3 > #3 0xffffffff80879748 in pmap_cache_bits (mode=3D, = is_pde=3D) > at /usr/src/sys/amd64/amd64/pmap.c:863 > 863 panic("Unknown caching mode %d\n", mode); > (kgdb) list *0xffffffff80879748 > 0xffffffff80879748 is at /usr/src/sys/amd64/amd64/pmap.c:863. > 858 pmap_cache_bits(int mode, boolean_t is_pde) > 859 { > 860 int cache_bits, pat_flag, pat_idx; > 861 =20 > 862 if (mode < 0 || mode >=3D PAT_INDEX_SIZE || pat_index[mod= e] < 0) > 863 panic("Unknown caching mode %d\n", mode); > 864 =20 > 865 /* The PAT bit is different for PTE's and PDE's. */ > 866 pat_flag =3D is_pde ? PG_PDE_PAT : PG_PTE_PAT; > 867 =20 > (kgdb) frame 4 > #4 0xffffffff80880fb4 in pmap_enter (pmap=3D0xfffffe01bfa66440, va=3D346= 36066816, access=3D,=20 > m=3D0xfffffe023dfc1b70, prot=3D, wired=3D) > at /usr/src/sys/amd64/amd64/pmap.c:3456 > 3456 newpte |=3D pmap_cache_bits(m->md.pat_mode, 0); > (kgdb) p *m > $1 =3D {pageq =3D {tqe_next =3D 0x0, tqe_prev =3D 0xffffffff80d2f1b8}, li= stq =3D {tqe_next =3D 0x0,=20 > tqe_prev =3D 0xfffffe023dfc1b08}, left =3D 0xfffffe023dfc1af8, right = =3D 0x0, object =3D 0xfffffe00219a93a0,=20 > pindex =3D 2905, phys_addr =3D 8809881600, md =3D {pv_list =3D {tqh_fir= st =3D 0x0, tqh_last =3D 0xfffffe023dfc1bb8},=20 > pat_mode =3D 8198}, queue =3D 255 '?', segind =3D 10 '\n', hold_count= =3D 0, order =3D 13 '\r', pool =3D 0 '\0',=20 > cow =3D 0, wire_count =3D 0, aflags =3D 0 '\0', oflags =3D 1 '\001', fl= ags =3D 0, act_count =3D 0 '\0', busy =3D 0 '\0',=20 > valid =3D 255 '?', dirty =3D 0 '\0'} > (kgdb) list *0xffffffff80880fb4 > 0xffffffff80880fb4 is in pmap_enter (/usr/src/sys/amd64/amd64/pmap.c:3461= ). > 3456 newpte |=3D pmap_cache_bits(m->md.pat_mode, 0); > 3457 =20 > 3458 mpte =3D NULL; > 3459 =20 > 3460 lock =3D NULL; > 3461 rw_rlock(&pvh_global_lock); > 3462 PMAP_LOCK(pmap); > 3463 =20 > 3464 /* > 3465 * In the case that a page table page is not > (kgdb) root@nucleus:/usr/obj/usr/src/sys/NUCLEUS # ^D >=20 > Script done on Fri Jan 11 14:58:54 2013 Show the output of p *(struct vm_object *)0xfffffe00219a93a0. 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