Date: Thu, 18 Mar 2010 06:35:40 -0700 From: David Wolfskill <david@catwhisker.org> To: current@freebsd.org Subject: Panic @r205276 (Fatal trap 12: page fault while in kernel mode) Message-ID: <20100318133540.GQ35333@bunrab.catwhisker.org>
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On first reboot after building & installing; yesterday (@r205249) was OK:
3 1. Boot FreeBSD [default] 3 |_| |_| \___|\___|
3 2. Boot FreeBSD with ACPI disabled 3 ____ _____ _____
3 3. Boot FreeBSD in Safe Mode 3 | _ \ / ____| __ \
3 4. Boot FreeBSD in single user mode 3 | |_) | (___ | | | |
3 5. Boot FreeBSD with verbose logging 3 | _ < \___ \| | | |
3 6. Escape to loader prompt 3 | |_) |____) | |__| |
3 7. Reboot 3 | | | |
3 3 |____/|_____/|_____/
3 3
3 3
3 3
3 Select option, [Enter] for default 3
3 or [Space] to pause timer 0 3
@DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDY
GDB: no debug ports present
KDB: debugger backends: ddb
KDB: current backend: ddb
Copyright (c) 1992-2010 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 9.0-CURRENT #102 r205276: Thu Mar 18 06:06:56 PDT 2010
root@freebeast.catwhisker.org:/common/S4/obj/usr/src/sys/GENERIC i386
WARNING: WITNESS option enabled, expect reduced performance.
Fatal trap 12: page fault while in kernel mode
cpuid =3D 0; apic id =3D 00
fault virtual address =3D 0xf000efd2
fault code =3D supervisor read, page not present
instruction pointer =3D 0x20:0xc093a0c8
stack pointer =3D 0x28:0xc142071c
frame pointer =3D 0x28:0xc142071c
code segment =3D base 0x0, limit 0xfffff, type 0x1b
=3D DPL 0, pres 1, def32 1, gran 1
processor eflags =3D interrupt enabled, resume, IOPL =3D 0
current process =3D 0 ()
[ thread pid 0 tid 0 ]
Stopped at strlen+0x8: cmpb $0,0(%edx)
db> bt
Tracing pid 0 tid 0 td 0xc0e02df0
strlen(f000efd2,c142086c,cccccccc,ccccccc,cccccccc,...) at strlen+0x8
kvprintf(c0ca617e,c08c9880,c142086c,a,c14208ac,...) at kvprintf+0x8fe
vsnprintf(c0e048e0,100,c0ca617e,c14208ac,0,...) at vsnprintf+0x3b
panic(c0ca617e,f000efd2,c0cd1cd6,dcc,c1420a68,...) at panic+0x8d
_mtx_lock_flags(5c,0,c0cd1cd6,dcc,c142091c,...) at _mtx_lock_flags+0x9a
_vm_map_lock_read(0,c0cd1cd6,dcc,5d,0,...) at _vm_map_lock_read+0x30
vm_map_lookup(c1420a50,f000f000,1,c1420a54,c1420a44,...) at vm_map_lookup+0=
x38
vm_fault(0,f000f000,1,0,f000ff63,...) at vm_fault+0xa5
trap_pfault(5,0,c0ce1b15,c0d904c0,c0e02b40,...) at trap_pfault+0x17b
trap(c1420b70) at trap+0x4a8
calltrap() at calltrap+0x6
--- trap 0xc, eip =3D 0xc08853d6, esp =3D 0xc1420bb0, ebp =3D 0xc1420bd0 ---
_mtx_lock_flags(f000ff53,0,c0cd0df2,9a2,0,...) at _mtx_lock_flags+0x46
zone_alloc_item(c0d9b5fc,c0cd12d4,c0cd11fb,c15ba000,c1420c88,...) at zone_a=
lloc_item+0x33
hash_alloc(c15ba008,c0cd12d4,c0cd11fb,10,df,...) at hash_alloc+0x54
keg_ctor(c15ba000,80,c1420c88,2,c1420c88,...) at keg_ctor+0x234
zone_alloc_item(c0f7d380,180,c1420c88,c0d9b5fc,20000000,...) at zone_alloc_=
item+0x176
zone_ctor(c0f7d380,180,c1420cd8,2,c0cd33f3,...) at zone_ctor+0x1d2
uma_startup(c158b000,30,7ff60000,3,c158b000,...) at uma_startup+0x1db
vm_page_startup(c15bb000,a,c1420d88,c084f0b6,0,...) at vm_page_startup+0x1d0
vm_mem_init(0,141ec00,141ec00,141e000,1425000,...) at vm_mem_init+0x18
mi_startup() at mi_startup+0x96
begin() at begin+0x2c
db>=20
Machine is a dual-CPU, single-core box (my build machine).
In normal course of operations, I'll be building & booting (smoke
testing) on my laptop as well, but since it's currently upgrading
the gcc44 port, that may wait for a few hours.
Anyway, I'll be happy to test patches.
Peace,
david
--=20
David H. Wolfskill david@catwhisker.org
Depriving a girl or boy of an opportunity for education is evil.
See http://www.catwhisker.org/~david/publickey.gpg for my public key.
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