Date: Tue, 20 Feb 2007 15:46:15 +0300 From: Alexey Sopov <adler@smtp.ru> To: stable@freebsd.org Subject: 6.2-RELEASE + MPD 4.1 = Fatal trap 12: page fault while in kernel mode Message-ID: <936174175.20070220154615@smtp.ru>
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Hi!
Yesterday I've updated my FreeBSD 6.0-RELEASE + mpd-4.0b4 up to
FreeBSD 6.2-RELEASE + mpd-4.1. And today I have a Fatal Trap.
Could you please help me to figure out what the problem consists in?
I folowed instructions described in handbook:
[intel][root]~# kgdb /usr/obj/usr/src/sys/router/kernel.debug /var/crash/v=
mcore.77
kgdb: kvm_nlist(_stopped_cpus):
kgdb: kvm_nlist(_stoppcbs):
[GDB will not be able to debug user-mode threads: /usr/lib/libthread_db.so:=
Undefined symbol "ps_pglobal_lookup"]
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 condition=
s.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i386-marcel-freebsd".
Unread portion of the kernel message buffer:
<6>external: promiscuous mode enabled
Fatal trap 12: page fault while in kernel mode
fault virtual address =3D 0xc
fault code =3D supervisor read, page not present
instruction pointer =3D 0x20:0xc0596202
stack pointer =3D 0x28:0xe4fabb18
frame pointer =3D 0x28:0xe4fabb4c
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 12 (swi4: clock sio)
Dumping 2047 MB (2 chunks)
chunk 0: 1MB (159 pages) ... ok
chunk 1: 2047MB (524032 pages) 2032 2016 2000 1984 1968 1952 1936 1920 19=
04 1888 1872 1856 1840 1824 1808 1792 1776 1760 1744 1728 1712 1696 1680 16=
64 1648 1632 1616 1600 1584 1568 1552 1536 1520 1504 1488 1472 1456 1440 14=
24 1408 1392 1376 1360 1344 1328 1312 1296 1280 1264 1248 1232 1216 1200 11=
84 1168 1152 1136 1120 1104 1088 1072 1056 1040 1024 1008 992 976 960 944 9=
28 912 896 880 864 848 832 816 800 784 768 752 736 720 704 688 672 656 640 =
624 608 592 576 560 544 528 512 496 480 464 448 432 416 400 384 368 352 336=
320 304 288 272 256 240 224 208 192 176 160 144 128 112 96 80 64 48 32 16
#0 doadump () at pcpu.h:165
165 pcpu.h: No such file or directory.
in pcpu.h
(kgdb) bt
#0 doadump () at pcpu.h:165
#1 0xc04772e7 in db_fncall (dummy1=3D-1067884030, dummy2=3D0, dummy3=3D1, =
dummy4=3D0xe4fab92c "")
at /usr/src/sys/ddb/db_command.c:492
#2 0xc0477780 in db_command_loop () at /usr/src/sys/ddb/db_command.c:350
#3 0xc0479600 in db_trap (type=3D12, code=3D0) at /usr/src/sys/ddb/db_main=
.c:222
#4 0xc0572252 in kdb_trap (type=3D0, code=3D0, tf=3D0xe4fabad8) at /usr/sr=
c/sys/kern/subr_kdb.c:473
#5 0xc06ffae4 in trap_fatal (frame=3D0xe4fabad8, eva=3D12) at /usr/src/sys=
/i386/i386/trap.c:828
#6 0xc06ffdeb in trap_pfault (frame=3D0xe4fabad8, usermode=3D0, eva=3D12)
at /usr/src/sys/i386/i386/trap.c:745
#7 0xc0700235 in trap (frame=3D
{tf_fs =3D 8, tf_es =3D 40, tf_ds =3D 40, tf_edi =3D 1352, tf_esi =3D=
0, tf_ebp =3D -453330100, tf_isp =3D -453330172, tf_ebx =3D -940045504, tf=
_edx =3D 20, tf_ecx =3D 1396, tf_eax =3D 44, tf_trapno =3D 12, tf_err =3D 0=
, tf_eip =3D -1067884030, tf_cs =3D 32, tf_eflags =3D 66054, tf_esp =3D 256=
, tf_ss =3D -453330040})
at /usr/src/sys/i386/i386/trap.c:435
#8 0xc06ec0ea in calltrap () at /usr/src/sys/i386/i386/exception.s:139
#9 0xc0596202 in m_copym (m=3D0x0, off0=3D1396, len=3D1376, wait=3D1)
at /usr/src/sys/kern/uipc_mbuf.c:397
#10 0xc061804a in ip_fragment (ip=3D0xcd365820, m_frag=3D0xe4fabc20, mtu=3D=
-940045504,
if_hwassist_flags=3D0, sw_csum=3D3073) at /usr/src/sys/netinet/ip_outpu=
t.c:975
#11 0xc061a846 in ip_output (m=3D0xc6894300, opt=3D0xcd365820, ro=3D0xe4fab=
bec, flags=3D1, imo=3D0x0,
inp=3D0x0) at /usr/src/sys/netinet/ip_output.c:804
#12 0xc0609742 in dummynet_send (m=3D0xc66b9e00) at /usr/src/sys/netinet/ip=
_dummynet.c:771
#13 0xc0609a32 in dummynet (unused=3D0x0) at /usr/src/sys/netinet/ip_dummyn=
et.c:753
#14 0xc0563590 in softclock (dummy=3D0x0) at /usr/src/sys/kern/kern_timeout=
.c:290
#15 0xc053a15f in ithread_loop (arg=3D0xc6391760) at /usr/src/sys/kern/kern=
_intr.c:682
#16 0xc0538cbd in fork_exit (callout=3D0xc053a040 <ithread_loop>, arg=3D0x2=
c, frame=3D0x2c)
at /usr/src/sys/kern/kern_fork.c:821
#17 0xc06ec14c in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:=
208
(kgdb) list *0xc0596202
0xc0596202 is in m_copym (/usr/src/sys/kern/uipc_mbuf.c:400).
395 MBUF_CHECKSLEEP(wait);
396 if (off =3D=3D 0 && m->m_flags & M_PKTHDR)
397 copyhdr =3D 1;
398 while (off > 0) {
399 KASSERT(m !=3D NULL, ("m_copym, offset > size of mb=
uf chain"));
400 if (off < m->m_len)
401 break;
402 off -=3D m->m_len;
403 m =3D m->m_next;
404 }
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3Dkernel config file=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
machine i386
cpu I686_CPU
ident router
makeoptions DEBUG=3D-g #Build kernel with gdb(1) debug sy=
mbols
options KDB
options DDB
options BREAK_TO_DEBUGGER
options SCHED_4BSD # 4BSD scheduler
options INET # InterNETworking
options FFS # Berkeley Fast Filesystem
options SOFTUPDATES # Enable FFS soft updates support
options UFS_DIRHASH # Improve performance on big direct=
ories
options MD_ROOT # MD is a potential root device
options NFSCLIENT # Network Filesystem Client
options NFSSERVER # Network Filesystem Server
options NFS_ROOT # NFS usable as /, requires NFSCLIE=
NT
options COMPAT_43 # Compatible with BSD 4.3 [KEEP THI=
S!]
options COMPAT_FREEBSD4 # Compatible with FreeBSD4
options SCSI_DELAY=3D5000 # Delay (in ms) before probing SCSI
options SYSVSHM # SYSV-style shared memory
options SYSVMSG # SYSV-style message queues
options SYSVSEM # SYSV-style semaphores
options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time exte=
nsions
options KBD_INSTALL_CDEV # install a CDEV entry in /dev
options AHC_REG_PRETTY_PRINT # Print register bitfields in debug
# output. Adds ~128k to driver.
options AHD_REG_PRETTY_PRINT # Print register bitfields in debug
options ADAPTIVE_GIANT # Giant mutex is adaptive.
options IPDIVERT
options DUMMYNET
options IPFIREWALL
options IPFIREWALL_VERBOSE
options IPFIREWALL_FORWARD
options IPFIREWALL_DEFAULT_TO_ACCEPT #allow everything by default
options HZ=3D1024
options DEVICE_POLLING
options GEOM_STRIPE
options GEOM_MIRROR
options NETGRAPH
options NETGRAPH_PPP
options NETGRAPH_BPF
options NETGRAPH_IFACE
options NETGRAPH_PPTPGRE
options NETGRAPH_NETFLOW
options NETGRAPH_TEE
options NETGRAPH_SOCKET
options NETGRAPH_KSOCKET
options NETGRAPH_VJC
options NETGRAPH_TCPMSS
device isa
device pci
device ata
device atadisk # ATA disk drives
device atapicd # ATAPI CDROM drives
options ATA_STATIC_ID # Static device numbering
device scbus # SCSI bus (required for SCSI)
device da # Direct Access (disks)
device pass # Passthrough device (direct SCSI access)
device ses # SCSI Environmental Services (and SAF-TE)
device ahd
device twe # 3ware ATA RAID
device atkbdc # AT keyboard controller
device atkbd # AT keyboard
device vga # VGA video card driver
device splash # Splash screen and screen saver support
device sc
device agp # support several AGP chipsets
device npx
device apm
device pmtimer
device sio # 8250, 16[45]50 based serial ports
device ppbus # Parallel port bus (required)
device miibus # MII bus support
device fxp # Intel EtherExpress PRO/100B (82557, 82558)
device re # RealTek 8139C+/8169/8169S/8110S
device rl # RealTek 8129/8139
device em
device iicbus
device smbus
device smb
device iicsmb
device nfsmb
# Pseudo devices.
device loop # Network loopback
device mem # Memory and kernel memory devices
device io # I/O device
device random # Entropy device
device ether # Ethernet support
device ppp # Kernel PPP
device tun # Packet tunnel.
device pty # Pseudo-ttys (telnet etc)
device bpf # Berkeley packet filter
device pf
device pflog
device apic
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3Dkernel config file=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
--=20
[ /Iexa ] mailto:adler@smtp.ru
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