From owner-freebsd-current@FreeBSD.ORG Sun Jan 13 18:33:42 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 C628A9F4; Sun, 13 Jan 2013 18:33:42 +0000 (UTC) (envelope-from gjb@FreeBSD.org) Received: from onyx.glenbarber.us (onyx.glenbarber.us [IPv6:2607:fc50:1000:c200::face]) by mx1.freebsd.org (Postfix) with ESMTP id 58607321; Sun, 13 Jan 2013 18:33:42 +0000 (UTC) Received: from glenbarber.us (kaos.glenbarber.us [71.224.221.174]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: gjb) by onyx.glenbarber.us (Postfix) with ESMTPSA id EE43323F763; Sun, 13 Jan 2013 13:33:40 -0500 (EST) DKIM-Filter: OpenDKIM Filter v2.7.1 onyx.glenbarber.us EE43323F763 Authentication-Results: onyx.glenbarber.us; dkim=none reason="no signature"; dkim-adsp=none (insecure policy) Date: Sun, 13 Jan 2013 13:33:38 -0500 From: Glen Barber To: Konstantin Belousov Subject: Re: [panic] Unknown caching mode 8198 in sys/amd64/amd64/pmap.c Message-ID: <20130113183338.GJ1359@glenbarber.us> References: <20130111200952.GA1359@glenbarber.us> <20130113175656.GC2561@kib.kiev.ua> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="JsihDCElWRmQcbOr" Content-Disposition: inline In-Reply-To: <20130113175656.GC2561@kib.kiev.ua> X-Operating-System: FreeBSD 10.0-CURRENT amd64 User-Agent: Mutt/1.5.21 (2010-09-15) 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 18:33:42 -0000 --JsihDCElWRmQcbOr Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Jan 13, 2013 at 07:56:56PM +0200, Konstantin Belousov wrote: > 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/cras= h/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 yo= u are > > welcome to change it and/or distribute copies of it under certain condi= tions. > > Type "show copying" to see the conditions. > > There is absolutely no warranty for GDB. Type "show warranty" for deta= ils. > > 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= %..91% > >=20 > > Reading symbols from /boot/kernel/zfs.ko...Reading symbols from /bootdi= r/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 /b= ootdir/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 /boot= dir/boot/kernel/linux.ko.symbols...done. > > done. > > Loaded symbols for /boot/kernel/linux.ko > > Reading symbols from /boot/kernel/coretemp.ko...Reading symbols from /b= ootdir/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 = /bootdir/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 /bootdi= r/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 /= bootdir/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 /boot= dir/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= /boot/kernel/pf.ko.symbols...done. > > done. > > Loaded symbols for /boot/kernel/pf.ko > > Reading symbols from /boot/kernel/i915kms.ko...Reading symbols from /bo= otdir/boot/kernel/i915kms.ko.symbols...done. > > done. > > Loaded symbols for /boot/kernel/i915kms.ko > > Reading symbols from /boot/kernel/iicbb.ko...Reading symbols from /boot= dir/boot/kernel/iicbb.ko.symbols...done. > > done. > > Loaded symbols for /boot/kernel/iicbb.ko > > Reading symbols from /boot/kernel/iicbus.ko...Reading symbols from /boo= tdir/boot/kernel/iicbus.ko.symbols...done. > > done. > > Loaded symbols for /boot/kernel/iicbus.ko > > Reading symbols from /boot/kernel/iic.ko...Reading symbols from /bootdi= r/boot/kernel/iic.ko.symbols...done. > > done. > > Loaded symbols for /boot/kernel/iic.ko > > Reading symbols from /boot/kernel/agp.ko...Reading symbols from /bootdi= r/boot/kernel/agp.ko.symbols...done. > > done. > > Loaded symbols for /boot/kernel/agp.ko > > Reading symbols from /boot/kernel/drm2.ko...Reading symbols from /bootd= ir/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...do= ne. > > 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/ker= n/kern_shutdown.c:446 > > #2 0xffffffff805cbba5 in panic (fmt=3D) at /usr/s= rc/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=3D3= 4636066816, 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, vadd= r=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=3D3= 4636066816,=20 > > fault_type=3D, fault_flags=3D0) at /usr/src/sy= s/vm/vm_fault.c:224 > > #7 0xffffffff8088593a in trap_pfault (frame=3D0xffffff8239b37ac0, user= mode=3D1) > > at /usr/src/sys/amd64/amd64/trap.c:756 > > #8 0xffffffff80886184 in trap (frame=3D0xffffff8239b37ac0) at /usr/src= /sys/amd64/amd64/trap.c:363 > > #9 0xffffffff8086f853 in calltrap () at /usr/src/sys/amd64/amd64/excep= tion.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[m= ode] < 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=3D3= 4636066816, 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}, = listq =3D {tqe_next =3D 0x0,=20 > > tqe_prev =3D 0xfffffe023dfc1b08}, left =3D 0xfffffe023dfc1af8, righ= t =3D 0x0, object =3D 0xfffffe00219a93a0,=20 > > pindex =3D 2905, phys_addr =3D 8809881600, md =3D {pv_list =3D {tqh_f= irst =3D 0x0, tqh_last =3D 0xfffffe023dfc1bb8},=20 > > pat_mode =3D 8198}, queue =3D 255 '?', segind =3D 10 '\n', hold_cou= nt =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', = flags =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:34= 61). > > 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 >=20 > Show the output of p *(struct vm_object *)0xfffffe00219a93a0. > Do you use zfs or drm2/i915 driver ? >=20 Yes, I use both drm2/i915 and zfs. Requested kgdb output follows. Thanks, Glen Script started on Sun Jan 13 13:31:20 2013 root@nucleus:/usr/obj/usr/src/sys/NUCLEUS # kgdb kernel.debug /var/crash/vm= core.6 [...] 229 __asm("movq %%gs:%1,%0" : "=3Dr" (td) (kgdb) p *(struct vm_object *)0xfffffe00219a93a0 $1 =3D {mtx =3D {lock_object =3D {lo_name =3D 0xffffffff8099b7a2 "vm object= ", lo_flags =3D 21168128, lo_data =3D 0,=20 lo_witness =3D 0x0}, mtx_lock =3D 4}, object_list =3D {tqe_next =3D 0= xfffffe011479c570,=20 tqe_prev =3D 0xfffffe0139f833c0}, shadow_head =3D {lh_first =3D 0x0}, s= hadow_list =3D { le_next =3D 0xfffffe00914d9740, le_prev =3D 0xfffffe001569ca28}, memq = =3D {tqh_first =3D 0xfffffe023cec1758,=20 tqh_last =3D 0xfffffe023dfc1b80}, root =3D 0xfffffe023dfc1b70, size =3D= 3026, generation =3D 1, ref_count =3D 2,=20 shadow_count =3D 0, memattr =3D 6 '\006', type =3D 0 '\0', flags =3D 1228= 8, pg_color =3D 64558,=20 paging_in_progress =3D 1, resident_page_count =3D 1928, backing_object = =3D 0x0, backing_object_offset =3D 0,=20 pager_object_list =3D {tqe_next =3D 0x0, tqe_prev =3D 0x0}, rvq =3D {lh_f= irst =3D 0x0}, cache =3D 0x0, handle =3D 0x0,=20 un_pager =3D {vnp =3D {vnp_size =3D 5, writemappings =3D 0}, devp =3D {de= vp_pglist =3D {tqh_first =3D 0x5,=20 tqh_last =3D 0x0}, ops =3D 0x0}, sgp =3D {sgp_pglist =3D {tqh_first= =3D 0x5, tqh_last =3D 0x0}}, swp =3D { swp_bcount =3D 5}}, cred =3D 0xfffffe00155d0c00, charge =3D 12394496} (kgdb) root@nucleus:/usr/obj/usr/src/sys/NUCLEUS # ^D Script done on Sun Jan 13 13:31:46 2013 --JsihDCElWRmQcbOr Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iQEcBAEBCAAGBQJQ8v4CAAoJEFJPDDeguUaj3tkIAItuvGsr1cQGSaxmsY2o1ZCs d75kMfW7vJlYibNBfP+9WPVjeS4jhGC5mxk+Fdg4yjQtoQZrbWYgYLK416T3LpHz 8/Cl+pnyVp/+i5/tBAy8KxFKr6S2nZTYXpcpT3l/7aFtwlQKHaJyttrQXKhH/biR Fk+hAh2TWbBldsp5Pfdcpy5NV2Xa6AOC9ftaMuqdGWYrgtrlsoxB8ibS90aA3Ts1 km0jDKnfyTwni6iDWnUIK9yfS89ErFpg2QMp/ghxcCt24AGR25IUHbI+nEmY8EtY 03XFdp+8RFT3iqypruDT0G/S7OyWo4LJPiotUycSM4VMwntHUSsaJyBsijrdQK8= =lqK3 -----END PGP SIGNATURE----- --JsihDCElWRmQcbOr--