Date: Sun, 19 Mar 1995 13:50:05 -0800 From: ferovick@runner.jpl.utsa.edu (David C Ferovick) To: freebsd-bugs Subject: kern/255: page fault after adding pcvt support into kernel config Message-ID: <199503192150.NAA04968@freefall.cdrom.com> In-Reply-To: Your message of Sun, 19 Mar 1995 15:49:38 -0600 <9503192149.AA29599@runner.utsa.edu>
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>Number: 255
>Category: kern
>Synopsis: page fault after adding pcvt support into kernel config
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: freebsd-bugs (FreeBSD bugs mailing list)
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Mar 19 13:50:02 1995
>Originator: Dave Ferovick
>Organization:
UTSA
>Release: FreeBSD 2.1.0-Development i386
>Environment:
NICE Chipset 486 dx2 80 16meg ram
Adaptec 1542 scsi controller with 2 ibm 1gig drives
BOCA ET-4000 video card
IBM Internal ISA CD-Rom (really a Matsushita/panasonic CR-563)
dual-16550 serial port card and single parallel port
WD8013EP ethernet
>Description:
The FreeBSD-current from 3/17/95 at 10 am runs fine if I do not
copy the two lines for PCVT from the LINT config file into my
config file for the kernel. It gets a page fault just after
the mounting root as... line on the screen. If I then rebuild
the kernel after commenting out those two lines, the kernel once
again works fine. I am leaving the syscon line alone, but if I
comment it out, the kernel stil traps.
Here is the kgdb script for the fault:
Script started on Sun Mar 19 15:05:54 1995
milan# kgdb kernel.debug /var/crash/vmcore.1
Reading symbol data from /usr/src/sys/compile/MYKERNEL/kernel.debug...done.
IdlePTD 1f8000
panic: page fault
current pcb at 1e300c
Reading in symbols for ../../i386/i386/machdep.c...done.
(kgdb) where
#0 boot (arghowto=256) (../../i386/i386/machdep.c line 787)
#1 0xf01126d3 in panic (...)
#2 0xf0192cfe in trap_fatal (...)
#3 0xf0192870 in trap_pfault (...)
#4 0xf0192537 in trap (...)
#5 0xf018b711 in exception:calltrap ()
#6 0xf012c554 in spec_open (...)
#7 0xf01299b7 in vn_open (...)
#8 0xf0126c33 in open (...)
#9 0xf0192ee7 in syscall (...)
(kgdb) up 4
Reading in symbols for ../../i386/i386/trap.c...done.
#4 0xf0192537 in trap (frame={tf_es = 16, tf_ds = -272695280, tf_edi = 0, tf_esi = 15616, tf_ebp = -272630324, tf_isp = -272630376, tf_ebx = 15616, tf_edx = 0, tf_ecx = -272630228, tf_eax = 61, tf_trapno = 12, tf_err = -272695296, tf_eip = 61, tf_cs = -262209528, tf_eflags = 66050, tf_esp = -266816605, tf_ss = 15616}) (../../i386/i386/trap.c line 288)
288 (void) trap_pfault(&frame, FALSE);
(kgdb) frame frame->tf_ebp frame->tf_eip
#0 0x3d in ?? ()
(kgdb) where
#0 boot (arghowto=256) (../../i386/i386/machdep.c line 787)
#1 0xf01126d3 in panic (...)
#2 0xf0192cfe in trap_fatal (frame=(struct trapframe *) 0xefbffd70) (../../i386/i386/trap.c line 569)
#3 0xf0192870 in trap_pfault (frame=(struct trapframe *) 0xefbffd70, usermode=0) (../../i386/i386/trap.c line 491)
#4 0xf0192537 in trap (frame={tf_es = 16, tf_ds = -272695280, tf_edi = 0, tf_esi = 15616, tf_ebp = -272630324, tf_isp = -272630376, tf_ebx = 15616, tf_edx = 0, tf_ecx = -272630228, tf_eax = 61, tf_trapno = 12, tf_err = -272695296, tf_eip = 61, tf_cs = -262209528, tf_eflags = 66050, tf_esp = -266816605, tf_ss = 15616}) (../../i386/i386/trap.c line 288)
#5 0xf018b711 in exception:calltrap ()
#6 0xf012c554 in spec_open (...)
#7 0xf01299b7 in vn_open (...)
#8 0xf0126c33 in open (...)
#9 0xf0192ee7 in syscall (frame={tf_es = 39, tf_ds = 39, tf_edi = 2117632, tf_esi = 0, tf_ebp = -272638436, tf_isp = -272629788, tf_ebx = 7086, tf_edx = 1, tf_ecx = 0, tf_eax = 5, tf_trapno = 582, tf_err = 582, tf_eip = 75669, tf_cs = 31, tf_eflags = 582, tf_esp = -272638456, tf_ss = 39}) (../../i386/i386/trap.c line 709)
(kgdb) frame 6
Reading in symbols for ../../miscfs/specfs/spec_vnops.c...done.
#6 0xf012c554 in spec_open (ap=(struct vop_open_args *) 0xefbffe2c) (../../miscfs/specfs/spec_vnops.c line 181)
181 error = (*cdevsw[maj].d_open)(dev, ap->a_mode, S_IFCHR, ap->a_p);
(kgdb) where
#0 boot (arghowto=256) (../../i386/i386/machdep.c line 787)
#1 0xf01126d3 in panic (...)
#2 0xf0192cfe in trap_fatal (frame=(struct trapframe *) 0xefbffd70) (../../i386/i386/trap.c line 569)
#3 0xf0192870 in trap_pfault (frame=(struct trapframe *) 0xefbffd70, usermode=0) (../../i386/i386/trap.c line 491)
#4 0xf0192537 in trap (frame={tf_es = 16, tf_ds = -272695280, tf_edi = 0, tf_esi = 15616, tf_ebp = -272630324, tf_isp = -272630376, tf_ebx = 15616, tf_edx = 0, tf_ecx = -272630228, tf_eax = 61, tf_trapno = 12, tf_err = -272695296, tf_eip = 61, tf_cs = -262209528, tf_eflags = 66050, tf_esp = -266816605, tf_ss = 15616}) (../../i386/i386/trap.c line 288)
#5 0xf018b711 in exception:calltrap ()
#6 0xf012c554 in spec_open (ap=(struct vop_open_args *) 0xefbffe2c) (../../miscfs/specfs/spec_vnops.c line 181)
#7 0xf01299b7 in vn_open (...)
#8 0xf0126c33 in open (...)
#9 0xf0192ee7 in syscall (frame={tf_es = 39, tf_ds = 39, tf_edi = 2117632, tf_esi = 0, tf_ebp = -272638436, tf_isp = -272629788, tf_ebx = 7086, tf_edx = 1, tf_ecx = 0, tf_eax = 5, tf_trapno = 582, tf_err = 582, tf_eip = 75669, tf_cs = 31, tf_eflags = 582, tf_esp = -272638456, tf_ss = 39}) (../../i386/i386/trap.c line 709)
(kgdb) quit
milan# exit
exit
Script done on Sun Mar 19 15:08:30 1995
Here is my failing kernel config file:
#
# GENERIC -- Generic machine with WD/AHx/NCR/BTx family disks
#
# GENERIC,v 1.20 1994/11/18 19:10:25 jkh Exp
#
machine "i386"
#cpu "I386_CPU"
cpu "I486_CPU"
#cpu "I586_CPU"
ident MYKERNEL
maxusers 10
#options MATH_EMULATE #Support for x87 emulation
options INET #InterNETworking
options FFS #Berkeley Fast Filesystem
options NFS #Network Filesystem
options MSDOSFS #MSDOS Filesystem
options "CD9660" #ISO 9660 Filesystem
options PROCFS #Process filesystem
options "COMPAT_43" #Compatible with BSD 4.3
options UCONSOLE #X Console support
#options "FAT_CURSOR" #block cursor in syscons or pccons
options "SCSI_DELAY=5" #Be pessimistic about Joe SCSI device
options "NCONS=10" #4 virtual consoles
#options BOUNCE_BUFFERS #include support for DMA bounce buffers
options "TUNE_1542"
options "DODUMP"
options LKM
config kernel root on wd0 swap on wd0 and wd1 and sd0 and sd1 dumps on wd0
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
#tape ft0 at fdc0 drive 2
#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 wdc1 at isa? port "IO_WD2" bio irq 15 vector wdintr
#disk wd2 at wdc1 drive 0
#disk wd3 at wdc1 drive 1
controller ncr0
#controller bt0 at isa? port "IO_BT0" bio irq ? vector btintr
#controller uha0 at isa? port "IO_UHA0" bio irq ? drq 5 vector uhaintr
#controller ahc0 at isa? bio irq ? vector ahcintr
#controller ahb0 at isa? bio irq ? vector ahbintr
controller aha0 at isa? port "IO_AHA0" bio irq ? drq 5 vector ahaintr
#controller aic0 at isa? port 0x340 bio irq 11 vector aicintr
#controller pas0 at isa? port 0x1f88 bio
#controller sea0 at isa? bio irq 5 iomem 0xc8000 iosiz 0x2000 vector seaintr
controller scbus0
device snd1 at isa? port 0x388
device snd2 at isa? port 0x220 irq 7 drq 1 vector sbintr
device snd3 at isa? port 0x388 irq 12 drq 7 vector pasintr
device sd0
device sd1
device sd2
device sd3
#device st0
#device st1
device cd0 #Only need one of these, the code dynamically grows
#device wt0 at isa? port 0x300 bio irq 5 drq 1 vector wtintr
#device mcd0 at isa? port 0x300 bio irq 10 vector mcdintr
#device mcd1 at isa? port 0x340 bio irq 11 vector mcdintr
#device icd0 at isa? port 0x300 bio
#device icd1 at isa? port 0x320 bio
#device icd2 at isa? port 0x340 bio
#device icd3 at isa? port 0x360 bio
device sc0 at isa? port "IO_KBD" tty irq 1 vector scintr
#device pc0 at isa? port "IO_KBD" tty irq 1 vector pcrint
# 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
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 sio2 at isa? port "IO_COM3" tty irq 5 vector siointr
device sio3 at isa? port "IO_COM4" tty irq 9 vector siointr
device lpt0 at isa? port? tty irq 7 vector lptintr
device lpt1 at isa? port? tty
device lpt2 at isa? port? tty
#device de0
device ed0 at isa? port 0x280 net irq 5 iomem 0xd8000 vector edintr
device ed1 at isa? port 0x300 net irq 5 iomem 0xd8000 vector edintr
#device ie0 at isa? port 0x360 net irq 7 iomem 0xd0000 vector ieintr
#device ep0 at isa? port 0x300 net irq 10 vector epintr
#device is0 at isa? port 0x280 net irq 10 drq 7 vector isintr
#device le0 at isa? port 0x300 net irq 5 iomem 0xd0000 vector le_intr
#device ze0 at isa? port 0x300 net irq 5 iomem 0xd8000 vector zeintr
pseudo-device loop
pseudo-device ether
pseudo-device log
pseudo-device sl 2
pseudo-device ppp 2
pseudo-device pty 16
pseudo-device speaker
pseudo-device gzip # Exec gzipped a.out's
>How-To-Repeat:
discussed above.
>Fix:
None known.
>Audit-Trail:
>Unformatted:
To: FreeBSD-gnats-submit@freebsd.org
Subject: problem report for FreeBSD-current...page fault when adding pcvt
From: ferovick@runner.jpl.utsa.edu
Reply-To: ferovick@runner.jpl.utsa.edu
X-send-pr-version: 3.2
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