Date: Wed, 3 Mar 1999 20:25:41 GMT From: Bob Bishop <rb@gid.co.uk> To: FreeBSD-gnats-submit@freebsd.org Subject: kern/10376: Screen saver panics Message-ID: <4189.199903032025@seagoon.gid.co.uk>
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>Number: 10376
>Category: kern
>Synopsis: Screen saver panics
>Confidential: no
>Severity: serious
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Mar 3 12:40:00 PST 1999
>Closed-Date:
>Last-Modified:
>Originator: Bob Bishop
>Release: FreeBSD 3.1-RELEASE i386
>Organization:
GID ltd
>Environment:
dmesg output and config attached at end.
>Description:
Panics for no readily apparent reason, two representative
tracebacks follow. The common factor seems to be taking a page
fault in vga_load_state()
#0 0xf01391ef in boot ()
#1 0xf0139474 in at_shutdown ()
#2 0xf01bb809 in trap_fatal ()
#3 0xf01bb4e7 in trap_pfault ()
#4 0xf01bb15e in trap ()
#5 0xf013b163 in tsleep ()
#6 0xf015761f in biowait ()
#7 0xf015575a in bread ()
#8 0xf0189a48 in ffs_update ()
#9 0xf018e0ee in ffs_fsync ()
#10 0xf018c52b in ffs_sync ()
#11 0xf015e7f3 in sync ()
#12 0xf0139035 in boot ()
#13 0xf0139474 in at_shutdown ()
#14 0xf01b970b in pmap_zero_page ()
#15 0xf0196954 in vm_fault ()
#16 0xf01bb494 in trap_pfault ()
#17 0xf01bb15e in trap ()
#18 0xf01cdc93 in vga_load_state ()
#19 0xf01cd422 in vga_set_mode ()
#20 0xf01abf8c in set_mode ()
#21 0xf01a91db in restore_scrn_saver_mode ()
#22 0xf01a901f in scsplash_saver ()
#23 0xf01a922e in stop_scrn_saver ()
#24 0xf01a8ccf in scrn_timer ()
#25 0xf013d8c3 in softclock ()
#26 0xf01b0b73 in doreti_swi ()
#27 0xf01beecb in vm_page_zero_idle ()
#0 0xf01391ef in boot ()
#1 0xf0139474 in at_shutdown ()
#2 0xf01bb809 in trap_fatal ()
#3 0xf01bb4e7 in trap_pfault ()
#4 0xf01bb15e in trap ()
#5 0xf013b163 in tsleep ()
#6 0xf0195540 in swap_pager_getpages ()
#7 0xf01a08fb in vm_pager_get_pages ()
#8 0xf019681c in vm_fault ()
#9 0xf01bb494 in trap_pfault ()
#10 0xf01bb15e in trap ()
#11 0xf01cdc93 in vga_load_state ()
#12 0xf01cd422 in vga_set_mode ()
#13 0xf01abf8c in set_mode ()
#14 0xf01a91db in restore_scrn_saver_mode ()
#15 0xf01a901f in scsplash_saver ()
#16 0xf01a922e in stop_scrn_saver ()
#17 0xf01a8ccf in scrn_timer ()
#18 0xf013d8c3 in softclock ()
>How-To-Repeat:
It happens a couple of times a day, haven't discovered
a reliable way to provoke it; possibly some
correlation with activity (NB this box only has 8MB of
memory). Using the snake screensaver.
>Fix:
Don't know. Workaround is to disable the screen saver.
FreeBSD 3.1-RELEASE #0: Mon Mar 1 15:19:23 GMT 1999
rb@cwagate:/usr/src/sys/compile/CWAGATE
Timecounter "i8254" frequency 1193182 Hz
CPU: i486DX (486-class CPU)
real memory = 8650752 (8448K bytes)
avail memory = 6471680 (6320K bytes)
Preloaded elf kernel "kernel" at 0xf024a000.
Probing for devices on the ISA bus:
sc0 on isa
sc0: VGA mono <16 virtual consoles, flags=0x0>
atkbdc0 at 0x60-0x6f on motherboard
atkbd0 irq 1 on isa
psm0 not found
sio0 at 0x3f8-0x3ff irq 4 flags 0x10 on isa
sio0: type 16550A
sio1 at 0x2f8-0x2ff irq 3 on isa
sio1: type 16550A
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fd0: 1.44MB 3.5in
fd1: 1.2MB 5.25in
ppc0 not found
1 3C5x9 board(s) on ISA found at 0x300
ep0 at 0x300-0x30f irq 10 on isa
ep0: aui/utp/bnc[*UTP*] address 00:a0:24:72:8a:3f
aha0 at 0x330-0x333 irq 11 drq 5 on isa
aha0: AHA-1540/1542 64 head BIOS FW Rev. 0.5 (ID=41) SCSI Host Adapter, SCSI ID 7, 16 CCBs
vga0 at 0x3b0-0x3df maddr 0xa0000 msize 131072 on isa
npx0 on motherboard
npx0: INT 16 interface
Waiting 15 seconds for SCSI devices to settle
sa0 at aha0 bus 0 target 1 lun 0
sa0: <WANGTEK 5525ES SCSI REV7 0W> Removable Sequential Access SCSI-CCS device
sa0: 3.300MB/s transfers
da0 at aha0 bus 0 target 0 lun 0
da0: <QUANTUM FIREBALL1280S 630G> Fixed Direct Access SCSI-2 device
da0: 3.300MB/s transfers
da0: 1222MB (2503872 512 byte sectors: 64H 32S/T 1222C)
#
# CWAGATE
#
machine "i386"
cpu "I486_CPU"
cpu "I586_CPU"
cpu "I686_CPU"
ident CWAGATE
maxusers 32
options MATH_EMULATE #Support for x87 emulation
options INET #InterNETworking
options FFS #Berkeley Fast Filesystem
options FFS_ROOT #FFS usable as root device [keep this!]
options MSDOSFS #MSDOS Filesystem
options PROCFS #Process filesystem
options "COMPAT_43" #Compatible with BSD 4.3 [KEEP THIS!]
options SCSI_DELAY=15000 #Be pessimistic about Joe SCSI device
options UCONSOLE #Allow users to grab the console
options FAILSAFE #Be conservative
options USERCONFIG #boot -c editor
options VISUAL_USERCONFIG #visual boot -c editor
config kernel root on wd0
controller isa0
controller fdc0 at isa? port "IO_FD1" bio irq 6 drq 2
disk fd0 at fdc0 drive 0
disk fd1 at fdc0 drive 1
options "CMD640" # work around CMD640 chip deficiency
controller aha0 at isa? port ? cam irq ?
controller scbus0
device da0
device sa0
device pass0
controller atkbdc0 at isa? port IO_KBD tty
device atkbd0 at isa? tty irq 1
device psm0 at isa? tty irq 12
device vga0 at isa? port ? conflicts
pseudo-device splash
device sc0 at isa? tty
device npx0 at isa? port IO_NPX irq 13
device sio0 at isa? port "IO_COM1" flags 0x10 tty irq 4
device sio1 at isa? port "IO_COM2" tty irq 3
device sio2 at isa? disable port "IO_COM3" tty irq 5
device sio3 at isa? disable port "IO_COM4" tty irq 9
# Parallel port
device ppc0 at isa? port? net irq 7
controller ppbus0
device nlpt0 at ppbus?
device plip0 at ppbus?
device ppi0 at ppbus?
device ep0 at isa? port 0x300 net irq 10
pseudo-device loop
pseudo-device ether
pseudo-device sl 1
pseudo-device tun 2
pseudo-device pty 16
pseudo-device gzip # Exec gzipped a.out's
options KTRACE #kernel tracing
options SYSVSHM
options SYSVMSG
pseudo-device bpfilter 4 #Berkeley packet filter
>Release-Note:
>Audit-Trail:
>Unformatted:
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