Help ! Panic Panic: Kernel crash

Help ! Panic Panic: Kernel crash

Post by Alan T Kran » Thu, 02 Oct 1997 04:00:00



Hi.

I thought I would repost this under a different title just in case...

I have a small problem and I'm not sure if it is a bug with FreeBSD 2.2.1
kernel or something I did. With the current kernel I have built - if I
try to execute a script file without setting the 'x' bit the system
crashes with:

"/kernel: panic: ufs_lock: recursive lock not expected"

When I asked Jordan about this he said it had to be an obvious goofed in my
CONF file (though he had no idea what the obvious goof could be) but I can't
find it. I've tried changing a few things and rebuilding but I still can't
find it. The sources I use are off of the 2.2.1 cdrom and are therefore
unmodified (I symlink as oppose to copy them to disk) - the only thing I have
modified is the CONF file which I have appended to this note. If someone
has the interest and time to look at this (or maybe just compile a
kernel using this CONF file and try it on their system) - feel free to flame
me for doing something stupid - but please point out the stupid mistake in
the process....

Some more information - I have been using this kernel for about 4 months
and the above condition is the only one (I know of) which causes it to crash
during this period - but the condition is reproduceable  (i.e.,
% cat > /tmp/script
% ^D
% chmod 600 /tmp/script
% /tmp/script
)_
the system is a P100, ASUS  P55TP4XE mother board, ncr 810 scsi controller -
ASUS graphic adapter (trio-3), 32mb ram.

thanks,
atk

---------MYCONF-----
#
# GENERIC -- Generic machine with WD/AHx/NCR/BTx family disks
#
# For more information read the handbook part System Administration ->
# Configuring the FreeBSD Kernel -> The Configuration File.
# The handbook is available in /usr/share/doc/handbook or online as
# latest version from the FreeBSD World Wide Web server
# <URL:http://www.FreeBSD.ORG/>
#
# An exhaustive list of options and more detailed explanations of the
# device lines is present in the ./LINT configuration file. If you are
# in doubt as to the purpose or necessity of a line, check first in LINT.
#
#       $Id: GENERIC,v 1.77.2.4 1997/02/22 20:31:24 joerg Exp $

machine         "i386"
cpu             "I586_CPU"
ident           "CCF1_CUSTOM"
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 [KEEP THIS!]
options         SCSI_DELAY=30           #Be pessimistic about Joe SCSI device
#options        BOUNCE_BUFFERS          #include support for DMA bounce buffers
options         UCONSOLE                #Allow users to grab the console
options         FAILSAFE                #Be conservative
options         USERCONFIG              #boot -c editor
options         VISUAL_USERCONFIG       #visual boot -c editor
#I Added
options         SYSVSHM
options         SYSVSEM
options         SYSVMSG
options         MFS                     #Memory file system

config          kernel  root on sd0

controller      isa0
#controller     eisa0
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

options         ATAPI           #Enable ATAPI support for IDE bus
options         ATAPI_STATIC    #Don't do it as an LKM
#device         wcd0    #IDE CD-ROM

# A single entry for any of these controllers (ncr, ahb, ahc, amd) is
# sufficient for any number of installed devices.
controller      ncr0
#controller     amd0
#controller     ahb0
#controller     ahc0
#controller     bt0     at isa? port "IO_BT0" bio irq ? vector bt_isa_intr
#controller     uha0    at isa? port "IO_UHA0" bio irq ? drq 5 vector uhaintr
#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     nca0    at isa? port 0x1f88 bio irq 10 vector ncaintr
#controller     nca1    at isa? port 0x350 bio irq 5 vector ncaintr
#controller     sea0    at isa? bio irq 5 iomem 0xc8000 iosiz 0x2000 vector seaintr

controller      scbus0

device          sd0

#device         od0     #See LINT for possible `od' options.

device          st0

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

#controller     matcd0  at isa? port 0x230 bio

#device         scd0    at isa? port 0x230 bio

# 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 >= 2.0.5
#options                XSERVER                 # include code for XFree86
#options                FAT_CURSOR              # start with block cursor
# If you have a ThinkPAD, uncomment this along with the rest of the PCVT lines
#options                PCVT_SCANSET=2          # IBM keyboards are non-std

# Mandatory, don't remove
device          npx0    at isa? port "IO_NPX" irq 13 vector npxintr

#
# Laptop support (see LINT for more options)
#
#device         apm0    at isa? disable # Advanced Power Management
#options                APM_BROKEN_STATCLOCK    # Workaround some buggy APM BIOS
# PCCARD (PCMCIA) support
#controller     crd0
#device         pcic0   at crd?
#device         pcic1   at crd?

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? disable port "IO_COM3" tty irq 5 vector siointr
#device         sio3    at isa? disable 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         mse0    at isa? port 0x23c tty irq 5 vector mseintr

#device         psm0    at isa? disable port "IO_KBD" conflicts tty irq 12 vector psmintr

# 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
#device fxp0
#device vx0

#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 ex0 at isa? port 0x300 net irq 10 iomem 0xd0000 vector exintr
#device fe0 at isa? port 0x300 net irq ? vector feintr
#device ix0 at isa? port 0x300 net irq 10 iomem 0xd0000 iosiz 32768 vector ixintr
#device le0 at isa? port 0x300 net irq 5 iomem 0xd0000 vector le_intr
#device lnc0 at isa? port 0x280 net irq 10 drq 0 vector lncintr
#device ze0 at isa? port 0x300 net irq 5 iomem 0xd8000 vector zeintr
#device zp0 at isa? port 0x300 net irq 10 iomem 0xd8000 vector zpintr

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
pseudo-device   gzip            # Exec gzipped a.out's

# I added - for sound support
options         "SBC_IRQ=5"
controller      snd0
device sb0 at isa? port 0x220 irq 5 drq 1 vector sbintr
device sbxvi0 at isa? drq 5
device sbmidi0 at isa? port 0x330
device joy0 at isa? port "IO_GAME"

# KTRACE enables the system-call tracing facility ktrace(2).
# This adds 4 KB bloat to your kernel, and slightly increases
# the costs of each syscall.
#options                KTRACE          #kernel tracing

 
 
 

Help ! Panic Panic: Kernel crash

Post by J Wuns » Tue, 07 Oct 1997 04:00:00



Quote:> I have a small problem and I'm not sure if it is a bug with FreeBSD 2.2.1
> kernel or something I did. With the current kernel I have built - if I
> try to execute a script file without setting the 'x' bit the system
> crashes with:

> "/kernel: panic: ufs_lock: recursive lock not expected"

Well, nobody else seems to reproduce this, however.  I don't have a
2.2.1 system around, but i correctly get:

/tmp/script: Permission denied.

Do you have any LKMs (mainly filesystem LKMs) loaded?

If all else fails, you could try debugging it (even a kernel stack
trace itself might already be useful), but i'm afraid that an upgrade
attempt is less work. ;-)

--
cheers, J"org


Never trust an operating system you don't have sources for. ;-)

 
 
 

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