Date: Mon, 25 Aug 1997 21:23:49 +0200 (SAT) From: mark@grondar.za To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: kern/4382: CURRENT kernel has a "free vnode isn't" panic Message-ID: <199708251923.VAA00549@greenpeace.grondar.za> Resent-Message-ID: <199708251930.MAA03417@hub.freebsd.org>
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>Number: 4382
>Category: kern
>Synopsis: CURRENT kernel has a "free vnode isn't" panic
>Confidential: no
>Severity: serious
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Aug 25 12:30:01 PDT 1997
>Last-Modified:
>Originator: Mark Murray
>Organization:
YDN2FK
>Release: FreeBSD 3.0-CURRENT i386
>Environment:
A CURRENT kernel compiled on July 27 was fine. Kernels compiled
since the 22nd Aug will panic if the (SCSI) disk gets too busy.
("Too busy" means a job like cvsup" or "cvs update"). Panic happens
randomly. Colleague at work with different motherboard and SCSI
controller reports similar panic.
>Description:
Kernel is built with the following config file:
#
# GA586DX -- Mark's Monster
#
# $Id$
machine "i386"
cpu "I586_CPU"
ident "GA586DX"
maxusers 16
options INET #InterNETworking
options FFS #Berkeley Fast Filesystem
options NFS #Network Filesystem
options MFS #Network Filesystem
options "CD9660" #ISO 9660 Filesystem
options PROCFS #Process filesystem
options KERNFS #Kernel filesystem
options DEVFS #Device filesystem
options "COMPAT_43" #Compatible with BSD 4.3 [KEEP THIS!]
options SCSI_DELAY=15 #Be pessimistic about Joe SCSI device
options UCONSOLE #Allow users to grab the console
options KTRACE #kernel tracing
options PERFMON #Performance monitor
options SYSVSHM #SYSV shared memory support
options SYSVSEM #SYSV semaphore support
options SYSVMSG #SYSV message queue support
## Create a SMP capable kernel (mandatory options):
#options SMP # Symmetric MultiProcessor Kernel
#options APIC_IO # Symmetric (APIC) I/O
#
## Lets always enable the kernel debugger for SMP.
#options DDB
config kernel root on sd0
controller isa0
controller pci0
controller fdc0 at isa? port "IO_FD1" bio irq 6 drq 2 vector fdintr
disk fd0 at fdc0 drive 0
controller ahc0
controller scbus0
device sd0
device st0
device cd0
device sc0 at isa? port "IO_KBD" tty irq 1 vector scintr
device psm0 at isa? port "IO_KBD" conflicts tty irq 12 vector psmintr
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
device npx0 at isa? port "IO_NPX" irq 13 vector npxintr
device vx0
device bktr0
controller snd0
device gus0 at isa? vector gusintr
pseudo-device loop
pseudo-device ether
pseudo-device log
pseudo-device tun 2
pseudo-device vn 2
pseudo-device pty 16
pseudo-device gzip
pseudo-device speaker
Digging through the entrails with gdb -k reveals the following:
[greenpeace] /sys/compile/GA586DX # gdb -k /kernel /var/crash/vmcore.0
GDB is free software and you are welcome to 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.
GDB 4.16 (i386-unknown-freebsd),
Copyright 1996 Free Software Foundation, Inc...
IdlePTD 257000
current pcb at 200d9c
panic: free vnode isn't
#0 boot (howto=256) at ../../kern/kern_shutdown.c:292
292 dumppcb.pcb_cr3 = rcr3();
(kgdb) where
#0 boot (howto=256) at ../../kern/kern_shutdown.c:292
#1 0xf01169c2 in panic (fmt=0xf01345a3 "free vnode isn't")
at ../../kern/kern_shutdown.c:419
#2 0xf01345f8 in getnewvnode (tag=VT_UFS, mp=0xf0770e00, vops=0xf0744000,
vpp=0xf47c8d30) at ../../kern/vfs_subr.c:364
#3 0xf019c7f4 in ffs_vget (mp=0xf0770e00, ino=130689, vpp=0xf47c8db4)
at ../../ufs/ffs/ffs_vfsops.c:945
#4 0xf019fe9e in ufs_lookup (ap=0xf47c8e24) at ../../ufs/ufs/ufs_lookup.c:578
#5 0xf0133cfd in lookup (ndp=0xf47c8eac) at vnode_if.h:31
#6 0xf013384f in namei (ndp=0xf47c8eac) at ../../kern/vfs_lookup.c:157
#7 0xf0138358 in stat (p=0xf07e4000, uap=0xf47c8f94, retval=0xf47c8f84)
at ../../kern/vfs_syscalls.c:1567
#8 0xf01bd9cb in syscall (frame={tf_es = 39, tf_ds = 39, tf_edi = 270209,
tf_esi = 426241, tf_ebp = -272640412, tf_isp = -193163292,
tf_ebx = 348992, tf_edx = -272640024, tf_ecx = 363584, tf_eax = 188,
tf_trapno = 7, tf_err = 7, tf_eip = 135129521, tf_cs = 31,
tf_eflags = 662, tf_esp = -272640576, tf_ss = 39})
at ../../i386/i386/trap.c:947
#9 0x80de9b1 in ?? ()
#10 0x422f2 in ?? ()
#11 0x5f94 in ?? ()
#12 0x3f891 in ?? ()
#13 0x32069 in ?? ()
#14 0x1721d in ?? ()
#15 0x31ede in ?? ()
#16 0x323a6 in ?? ()
#17 0x1721d in ?? ()
#18 0x31f61 in ?? ()
#19 0x323a6 in ?? ()
#20 0x1721d in ?? ()
#21 0x31f61 in ?? ()
#22 0x323a6 in ?? ()
#23 0x1721d in ?? ()
#24 0x31f61 in ?? ()
#25 0x323a6 in ?? ()
#26 0x1721d in ?? ()
#27 0x31f61 in ?? ()
#28 0x3193b in ?? ()
#29 0x3f796 in ?? ()
#30 0x3f66d in ?? ()
#31 0x2482c in ?? ()
#32 0x1095 in ?? ()
(kgdb) quit
>How-To-Repeat:
See Above
>Fix:
Dunno
>Audit-Trail:
>Unformatted:
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