I forgot to say what I was doing at the time the panic happened. I was
playing mp3s with mpg123.

On  0, Sean Davis <dive-nb@endersgame.net> wrote:
> I've had the kernel panic three times so far on this build (kernel built
> some 22 hours after the new ffs_softdep() stuff was merged in, if that is
> any help) and this time I managed to catch it with DDB.
> 
> Note, ddb.onpanic was 1, so i dumped it using 'sync', but i believe I got
> the information that will help whoever out there understands this better
> than I do :)
> 
> Any help would be greatly appreciated. I'm about to do a cvs update and
> rebuild/install kernel/userland, just to see if that fixes it, but I'm
> curious as to what caused this.
> 
> here's the gdb output:
> 
> <root@eros(/var/crash){1}> # gdb netbsd.2
> GNU gdb 4.17
> Copyright 1998 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 conditions.
> 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--netbsd"...(no debugging symbols found)...
> (gdb) target kcore netbsd.2.core
> #0  0xc0212478 in db_last_command ()
> (gdb) symbol-file /netbsd.gdb
> Reading symbols from /netbsd.gdb...done.
> (gdb) bt
> #0  0xc0212478 in db_last_command ()
> #1  0x8715000 in ?? ()
> #2  0xc01ab00b in cpu_reboot (howto=256, bootstr=0x0)
>     at ../../../../arch/i386/i386/machdep.c:1846
> #3  0xc010af89 in db_sync_cmd () at ../../../../ddb/db_command.c:744
> #4  0xc010ab29 in db_command (last_cmdp=0xc0212478, cmd_table=0xc01f1540)
>     at ../../../../ddb/db_command.c:320
> #5  0xc010ad3a in db_command_loop () at ../../../../ddb/db_command.c:579
> #6  0xc010dbce in db_trap (type=6, code=0) at ../../../../ddb/db_trap.c:88
> #7  0xc01a8714 in kdb_trap (type=6, code=0, regs=0xe5217b4c)
>     at ../../../../arch/i386/i386/db_interface.c:125
> #8  0xc01afac0 in trap (frame={tf_gs = -1061289968, tf_fs = -1072562160,
>       tf_es = -450887664, tf_ds = -268435440, tf_edi = -1071527072,
>       tf_esi = 0, tf_ebp = -450790488, tf_ebx = -1071527068, tf_edx = 2,
>       tf_ecx = 0, tf_eax = 16, tf_trapno = 6, tf_err = 0,
>       tf_eip = -1072548681, tf_cs = 8, tf_eflags = 66118,
>       tf_esp = -1071527072, tf_ss = -1061806528, tf_vm86_es = -1071527072,
>       tf_vm86_ds = 0, tf_vm86_fs = 0, tf_vm86_gs = 16})
>     at ../../../../arch/i386/i386/trap.c:215
> #9  0xc0100b7f in calltrap ()
> #10 0xc019bfae in uvm_map (map=0xc021cb60, startp=0xe5217c0c, size=4096,
>     uobj=0xc021cae0, uoffset=-1, align=0, flags=5927)
>     at ../../../../uvm/uvm_map.h:355
> #11 0xc019aef9 in uvm_km_valloc_align (map=0xc021cb60, size=4096, align=0)
> ---Type <return> to continue, or q <return> to quit---
>     at ../../../../uvm/uvm_km.c:752
> #12 0xc019aeb6 in uvm_km_valloc (map=0xc021cb60, size=4096)
>     at ../../../../uvm/uvm_km.c:730
> #13 0xc01a7367 in _bus_dmamem_map (t=0xc0216b80, segs=0xc0b61e40, nsegs=1,
>     size=4096, kvap=0xe5217c88, flags=4)
>     at ../../../../arch/i386/i386/bus_machdep.c:803
> #14 0xc01c48be in tl_init (sc=0xc0b61c00) at ../../../../dev/pci/if_tl.c:623
> #15 0xc01c5ff0 in tl_ifwatchdog (ifp=0xc0b61c40)
>     at ../../../../dev/pci/if_tl.c:1491
> #16 0xc015cb8f in if_slowtimo (arg=0x0) at ../../../../net/if.c:1125
> #17 0xc011d746 in softclock (v=0x0) at ../../../../kern/kern_clock.c:973
> #18 0xc011d579 in hardclock (frame=0xe5217d0c)
>     at ../../../../kern/kern_clock.c:897
> #19 0xc01cdcb4 in clockintr (arg=0xe5217d0c)
>     at ../../../../arch/i386/isa/clock.c:409
> #20 0xc0100cd4 in Xintr0 ()
> (gdb)
> 
> 
> The system's dmesg follows:
> 
> NetBSD 1.5X (EROS) #133: Thu Sep  6 20:27:44 EDT 2001
>     dive@eros.endersgame.net:/current/src/sys/arch/i386/compile/EROS
> cpu0: Intel Pentium III (Coppermine) Celeron (686-class), 534.57 MHz
> cpu0: I-cache 16 KB 32b/line 4-way, D-cache 16 KB 32b/line 2-way
> cpu0: L2 cache 128 KB 32b/line 4-way
> cpu0: features 383f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR>
> cpu0: features 383f9ff<PGE,MCA,CMOV,FGPAT,PSE36,MMX,FXSR,SSE>
> total memory = 511 MB
> avail memory = 472 MB
> using 6574 buffers containing 26296 KB of memory
> BIOS32 rev. 0 found at 0xfb300
> PCI BIOS rev. 2.1 found at 0xfb330
> PCI IRQ Routing Table rev. 1.0 found at 0xfdee0, size 176 bytes (9 entries)
> PCI Interrupt Router at 000:07:0 (vendor 0x8086 product 0x7000)
> PCI Exclusive IRQs: 7 9 11
> mainbus0 (root)
> pci0 at mainbus0 bus 0: configuration mode 1
> pci0: i/o space, memory space enabled
> pchb0 at pci0 dev 0 function 0
> pchb0: vendor 0x8086 product 0x7190 (rev. 0x03)
> pchb0: random number generator enabled
> ppb0 at pci0 dev 1 function 0: vendor 0x8086 product 0x7191 (rev. 0x03)
> pci1 at ppb0 bus 1
> pci1: i/o space, memory space enabled
> vga0 at pci1 dev 0 function 0: vendor 0x10de product 0x002c (rev. 0x15)
> wsdisplay0 at vga0: console (80x25, vt100 emulation)
> pcib0 at pci0 dev 7 function 0
> pcib0: vendor 0x8086 product 0x7110 (rev. 0x02)
> pciide0 at pci0 dev 7 function 1: Intel 82371AB IDE controller (PIIX4) (rev. 0x01)
> pciide0: bus-master DMA support present
> pciide0: primary channel wired to compatibility mode
> atapibus0 at pciide0 channel 0: 2 targets
> cd0 at atapibus0 drive 0: <ASUS CD-S500/A, , V3.4H> type 5 cdrom removable
> cd0: 32-bit data port
> cd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
> cd1 at atapibus0 drive 1: <Pioneer DVD-ROM ATAPIModel DVD-104S 012, , E1.25> type 5 cdrom removable
> cd1: 32-bit data port
> cd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
> pciide0: primary channel interrupting at irq 14
> cd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA data transfers)
> cd1(pciide0:0:1): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA data transfers)
> pciide0: secondary channel wired to compatibility mode
> atapibus1 at pciide0 channel 1: 2 targets
> cd2 at atapibus1 drive 0: <MATSHITA CD-RW CW-7585, , 1.04> type 5 cdrom removable
> cd2: 32-bit data port
> cd2: drive supports PIO mode 4, DMA mode 2
> pciide0: secondary channel interrupting at irq 15
> cd2(pciide0:1:0): using PIO mode 4, DMA mode 2 (using DMA data transfers)
> vendor 0x8086 product 0x7112 (USB serial bus, revision 0x01) at pci0 dev 7 function 2 not configured
> vendor 0x8086 product 0x7113 (miscellaneous bridge, revision 0x02) at pci0 dev 7 function 3 not configured
> ppb1 at pci0 dev 11 function 0: vendor 0x1014 product 0x0022 (rev. 0x01)
> pci2 at ppb1 bus 2
> pci2: i/o space, memory space enabled
> tl0 at pci2 dev 0 function 0
> tl0: Compaq Dual Port Netelligent 10/100 TX
> tl0: Ethernet address 00:08:c7:a4:a9:40
> tl0: interrupting at irq 9
> nsphy0 at tl0 phy 1: DP83840 10/100 media interface, rev. 1
> nsphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
> tlphy0 at tl0 phy 31: ThunderLAN 10BASE-T media interface, rev. 5
> tlphy0: 10base5
> tl1 at pci2 dev 1 function 0
> tl1: Compaq Dual Port Netelligent 10/100 TX
> tl1: Ethernet address 00:08:c7:a4:a9:c0
> tl1: interrupting at irq 7
> nsphy1 at tl1 phy 1: DP83840 10/100 media interface, rev. 1
> nsphy1: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
> tlphy1 at tl1 phy 31: ThunderLAN 10BASE-T media interface, rev. 5
> tlphy1: 10base5
> pciide1 at pci0 dev 19 function 0: Triones/Highpoint HPT366 IDE Controller
> pciide1: bus-master DMA support present
> pciide1: primary channel wired to native-PCI mode
> pciide1: using irq 11 for native-PCI interrupt
> wd0 at pciide1 channel 0 drive 0: <IBM-DPTA-372050>
> wd0: drive supports 16-sector PIO transfers, LBA addressing
> wd0: 19574 MB, 16383 cyl, 16 head, 63 sec, 512 bytes/sect x 40088160 sectors
> wd0: 32-bit data port
> wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 4 (Ultra/66)
> wd0(pciide1:0:0): using PIO mode 4, Ultra-DMA mode 4 (Ultra/66) (using DMA data transfers)
> vendor 0x1103 product 0x0004 (miscellaneous mass storage, revision 0x01) at pci0 dev 19 function 1 not configured
> isa0 at pcib0
> com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
> pckbc0 at isa0 port 0x60-0x64
> pckbd0 at pckbc0 (kbd slot)
> pckbc0: using irq 1 for kbd slot
> wskbd0 at pckbd0: console keyboard, using wsdisplay0
> pmsi0 at pckbc0 (aux slot)
> pckbc0: using irq 12 for aux slot
> wsmouse0 at pmsi0 mux 0
> sb0 at isa0 port 0x220-0x237 irq 5 drq 1 drq2 5: dsp v4.16
> audio0 at sb0: full duplex, mmap, independent
> opl at sb0 not configured
> pcppi0 at isa0 port 0x61
> sysbeep0 at pcppi0
> npx0 at isa0 port 0xf0-0xff: using exception 16
> fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
> biomask ed4d netmask efcd ttymask ffcf
> boot device: wd0
> root on wd0a dumps on wd0b
> init: copying out path `/sbin/init' 11
> XFree86 aperture driver version 2.0
> Pentium Pro MTRR support enabled
> IP Filter: v3.4.16 initialized.  Default = pass all, Logging = enabled
> wsdisplay0: screen 1 added (80x25, vt100 emulation)
> wsdisplay0: screen 2 added (80x25, vt100 emulation)
> wsdisplay0: screen 3 added (80x25, vt100 emulation)
> wsdisplay0: screen 4 added (80x25, vt100 emulation)
> wsdisplay0: screen 5 added (80x25, vt100 emulation)
> wsdisplay0: screen 6 added (80x25, vt100 emulation)
> wsdisplay0: screen 7 added (80x25, vt100 emulation)
> wsmux1: connecting to wsdisplay0
> 
> And here is my kernel config file, for good measure:
> 
> # $Id: EROS,v 1.1 2001/09/05 01:48:02 dive Exp $
> machine		i386
> ident		"EROS"
> maxusers	64
> makeoptions	COPTS="-O -march=pentiumpro"
> makeoptions	DEBUG="-g"
> options		I686_CPU
> options		MTRR
> options		DUMMY_NOPS
> options		UCONSOLE
> options		EXEC_ELF32
> options		EXEC_SCRIPT
> options		EXEC_AOUT
> options		RTC_OFFSET=0
> options		NTP
> options		LKM
> options		COMPAT_LINUX
> options		SYSVMSG
> options		SYSVSEM
> options		SYSVSHM
> options		PCIBIOS
> options		COMPAT_15
> options		COMPAT_43
> options		SOFTDEP
> options		NEW_PIPE
> options		GATEWAY
> options		IPFILTER_LOG
> options		PFIL_HOOKS
> options		INET
> options		DDB
> options		WSEMUL_VT100
> options		WS_KERNEL_FG=WSCOL_GREEN
> options		WSDISPLAY_COMPAT_PCVT
> options		WSDISPLAY_COMPAT_SYSCONS
> options		WSDISPLAY_COMPAT_USL
> options		WSDISPLAY_COMPAT_RAWKBD
> options		KTRACE
> options		DEBUG
> 
> file-system	FFS
> file-system	MFS
> file-system	KERNFS
> file-system	PROCFS
> file-system	CD9660
> 
> config		netbsd root on wd0a type ffs
> 
> mainbus0	at root
> pci0		at mainbus0 bus 0
> pchb0		at pci0 dev 0 function 0
> ppb0		at pci0 dev 1 function 0
> ppb1		at pci0 dev 11 function 0
> pci1		at ppb0 bus 1
> pci2		at ppb1 bus 2
> pcib0		at pci0 dev 7 function 0
> isa0		at pcib0
> vga0		at pci1 dev 0 function 0
> npx0		at isa0 port 0xf0 irq 13
> pckbc0		at isa0
> pckbd0		at pckbc0
> pmsi0		at pckbc0
> pcdisplay0	at isa0
> wsdisplay0	at vga0 console ?
> wskbd0		at pckbd0 console ?
> wsmouse0	at pmsi0 mux 0
> pcppi0		at isa0 port 0x61
> sysbeep0	at pcppi0
> com0		at isa0 port 0x3f8 irq 4
> pciide0		at pci0 dev 7 function 1 flags 0x0000
> pciide1		at pci0 dev 19 function 0 flags 0x0000
> atapibus0	at pciide0 channel 0
> atapibus1	at pciide0 channel 1
> cd0		at atapibus0 drive 0 flags 0x0000
> cd1		at atapibus0 drive 1 flags 0x0000
> cd2		at atapibus1 drive 0 flags 0x0000
> wd0		at pciide1 channel 0 drive 0 flags 0x0000
> fdc0		at isa0 port 0x3f0 irq 6 drq 2
> fd0		at fdc0 drive 0
> tl0		at pci2 dev 0 function 0
> tl1		at pci2 dev 1 function 0
> nsphy0		at tl0 phy 1
> nsphy1		at tl1 phy 1
> tlphy0		at tl0 phy 31
> tlphy1		at tl1 phy 31
> sb0		at isa0 port 0x220 irq 5 drq 1 drq2 5
> audio0		at sb0
> 
> pseudo-device	bpfilter 4
> pseudo-device	ipfilter
> pseudo-device	loop
> pseudo-device	pty
> pseudo-device	rnd
> pseudo-device	wsmux 2
> pseudo-device	vnd 2
> pseudo-device	md 2