Date: Tue, 12 Dec 1995 11:36:26 -0500 (EST) From: "Marc G. Fournier" <scrappy@hub.org> To: FreeBSD-gnats-submit@freebsd.org Subject: kern/903: panic: m_copydata Message-ID: <199512121636.LAA00623@hub.org> Resent-Message-ID: <Pine.ULT.3.91.951219132411.6360T@ucvg.med.utah.edu>
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>Number: 903
>Category: kern
>Synopsis: panic: m_copydata
>Confidential: no
>Severity: critical
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue Dec 19 02:40:02 PST 1995
>Last-Modified:
>Originator: Marc G. Fournier
>Organization:
<>
>Release: FreeBSD 2.2-CURRENT i386
>Environment:
dmesg of system:
FreeBSD 2.2-CURRENT #4: Tue Dec 12 05:39:49 EST 1995
scrappy@hub.org:/usr/src/sys/compile/hubdebug
CPU: i386DX (386-class CPU)
real memory = 8650752 (8448K bytes)
avail memory = 6971392 (6808K bytes)
DEVFS: ready for devices
Probing for devices on the ISA bus:
vt0 at 0x60-0x6f irq 1 on motherboard
vt0: tvga 9000, 80/132 col, color, 8 scr, mf2-kbd, [R3.20-b24]
sio0 at 0x3f8-0x3ff irq 4 on isa
sio0: type 16550A
sio1 at 0x2f8-0x2ff irq 3 on isa
sio1: type 16450
lpt0 not found at 0xffffffff
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fdc0: NEC 765
fd0: 1.44MB 3.5in
wdc0 at 0x1f0-0x1f7 irq 14 on isa
wdc0: unit 0 (wd0): <Maxtor 7345 AT>
wd0: 329MB (675450 sectors), 790 cyls, 15 heads, 57 S/T, 512 B/S
aha0 at 0x330-0x333 irq 11 drq 5 on isa
aha0 waiting for scsi devices to settle
(aha0:0:0): "QUANTUM LPS340S 020B" type 0 fixed SCSI 2
sd0(aha0:0:0): Direct-Access 327MB (670506 512 byte sectors)
(aha0:2:0): "CONNER CFA540S 13B0" type 0 fixed SCSI 2
sd1(aha0:2:0): Direct-Access 515MB (1056708 512 byte sectors)
(aha0:6:0): "QUANTUM LP240S GM240S01X 4.6" type 0 fixed SCSI 2
sd2(aha0:6:0): Direct-Access 234MB (479350 512 byte sectors)
npx0 on motherboard
npx0: 387 emulator
devfs ready to run
WARNING: / was not properly dismounted.
config of system:
#
# GENERIC -- Generic machine with WD/AHx/NCR/BTx family disks
#
# GENERIC,v 1.45.2.3 1995/06/05 21:50:41 jkh Exp
#
machine "i386"
cpu "I386_CPU"
ident hubdebug
maxusers 10
options DEVFS
options DODUMP
options DDB
options MATH_EMULATE #Support for x87 emulation
options INET #InterNETworking
options FFS #Berkeley Fast Filesystem
options MSDOSFS #MSDOS Filesystem
options PROCFS #Process filesystem
options "COMPAT_43" #Compatible with BSD 4.3
options "SCSI_DELAY=15" #Be pessimistic about Joe SCSI device
options BOUNCE_BUFFERS #include support for DMA bounce buffers
options UCONSOLE #Allow users to grab the console
config kernel root on wd0
options SYSVSHM
options SYSVSEM
options SYSVMSG
controller isa0
#controller pci0
controller fdc0 at isa? port "IO_FD1" bio irq 6 drq 2 vector fdintr
disk fd0 at fdc0 drive 0
disk fd1 at fdc0 drive 1
controller wdc0 at isa? port "IO_WD1" bio irq 14 vector wdintr
disk wd0 at wdc0 drive 0
disk wd1 at wdc0 drive 1
#controller ncr0
controller ahc0
controller aha0 at isa? port "IO_AHA0" bio irq ? drq 5 vector ahaintr
controller scbus0
device sd0
device st0
device cd0 #Only need one of these, the code dynamically grows
# syscons is the default console driver, resembling an SCO console
#device sc0 at isa? port "IO_KBD" tty irq 1 vector scintr
# Enable this and PCVT_FREEBSD for pcvt vt220 compatible console driver
device vt0 at isa? port "IO_KBD" tty irq 1 vector pcrint
options "PCVT_FREEBSD=210" # pcvt running on FreeBSD 2.1
options PCVT_SCREENSAVER
options PCVT_PRETTYSCRNS
#options "PCVT_NSCREENS=7"
#options XSERVER # include code for XFree86
device npx0 at isa? port "IO_NPX" irq 13 vector npxintr
device sio0 at isa? port "IO_COM1" tty irq 4 vector siointr
device sio1 at isa? port "IO_COM2" tty irq 3 vector siointr
device lpt0 at isa? port? tty irq 7 vector lptintr
# Order is important here due to intrusive probes, do *not* alphabetize
# this list of network interfaces until the probes have been fixed.
# Right now it appears that the ie0 must be probed before ep0. See
# revision 1.20 of this file.
#device de0
pseudo-device loop
pseudo-device ether
pseudo-device log
pseudo-device sl 1
# ijppp uses tun instead of ppp device
#pseudo-device ppp 1
pseudo-device tun 1
pseudo-device pty 16
>Description:
On a reasonably regular basis, I get a 'panic: m_copydata' error
and reboot of the system. Having enabled DDB and DODUMP, I'm not
getting a 'savecore', but it does put me into the kernel debugger
instead of rebooting.
Error:
panic: m_copydata
stopped at _Debugger+0x2b: movb $0,_in_Debugger.98
Trace:
_Debugger(f0111fe0,f011d5e4,efbffe94,14) at _Debugger+0x2b
_panic(f011d5e3,14,ffffffff,f05f3880,efbfff20) at _panic+0x3b
_m_copydata(0,ffffffff,1,f05f38e8,0) at _m_copydata+0x21
_tcp_output(f05a4f00,f061169c,f0611b80,14,efbfff30) at
_tcp_output+0x635
_tcp_input(f0611680,14) at _tcp_input+0x13da
_ipintr(f0172117,0,efbf0027,27,3c) at _ipintr+0x429
Bad User Frame pointer: 0xefbf9120
I have a /var/crash directory created, but not core dump...
In transcribing the Trace to paper, do I need *all* the lines,
or is there only one or two that are significant?
>How-To-Repeat:
>Fix:
>Audit-Trail:
>Unformatted:
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