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Date:      Wed, 2 Jun 1999 07:09:39 -0700 (PDT)
From:      Cy Schubert <Cy.Schubert@uumail.gov.bc.ca>
To:        FreeBSD-gnats-submit@freebsd.org
Subject:   kern/11993: panic: getnewbuf: inconsistent EMPTY queue, qindex=0
Message-ID:  <199906021409.HAA04013@passer.osg.gov.bc.ca>

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>Number:         11993
>Category:       kern
>Synopsis:       panic: getnewbuf: inconsistent EMPTY queue, qindex=0
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Jun  2 07:10:02 PDT 1999
>Closed-Date:
>Last-Modified:
>Originator:     Cy Schubert
>Release:        FreeBSD 3.2-RELEASE i386
>Organization:
ITSD province of BC
>Environment:

	FreeBSD passer.osg.gov.bc.ca 3.2-RELEASE FreeBSD 3.2-RELEASE #0: Tue Jun  1 23:31:36 PDT 1999     root@passer.osg.gov.bc.ca:/opt/cvs-320/src/sys/compile/PASSER  i386

Jun  2 00:00:00 passer CRON[758]: (root) CMD (/usr/libexec/atrun)
Jun  2 00:18:58 passer syslogd: restart
Jun  2 00:18:58 passer /kernel: Copyright (c) 1992-1999 FreeBSD Inc.
Jun  2 00:18:58 passer /kernel: Copyright (c) 1982, 1986, 1989, 1991, 1993
Jun  2 00:18:58 passer /kernel: The Regents of the University of California. All
 rights reserved.
Jun  2 00:18:58 passer /kernel: FreeBSD 3.2-RELEASE #0: Tue Jun  1 23:31:36 PDT
1999
Jun  2 00:18:58 passer /kernel: root@passer.osg.gov.bc.ca:/opt/cvs-320/src/sys/c
ompile/PASSER
Jun  2 00:18:58 passer /kernel: Timecounter "i8254"  frequency 1193182 Hz
Jun  2 00:18:58 passer /kernel: Timecounter "TSC"  frequency 331109738 Hz
Jun  2 00:18:58 passer /kernel: CPU: Pentium II/Xeon/Celeron (331.11-MHz 686-cla
ss CPU)
Jun  2 00:18:58 passer /kernel: Origin = "GenuineIntel"  Id = 0x650  Stepping=0
Jun  2 00:18:58 passer /kernel: Features=0x183f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MC
E,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,<b24>>
Jun  2 00:18:58 passer /kernel: real memory  = 134217728 (131072K bytes)
Jun  2 00:18:58 passer /kernel: avail memory = 127741952 (124748K bytes)
Jun  2 00:18:58 passer /kernel: Preloaded elf kernel "kernel" at 0xc02b6000.
Jun  2 00:18:58 passer /kernel: Probing for devices on PCI bus 0:
Jun  2 00:18:58 passer /kernel: chip0: <Host to PCI bridge (vendor=8086 device=7
180)> rev 0x03 on pci0.0.0
Jun  2 00:18:58 passer /kernel: chip1: <PCI to PCI bridge (vendor=8086 device=71
81)> rev 0x03 on pci0.1.0
Jun  2 00:18:58 passer /kernel: chip2: <Intel 82371AB PCI to ISA bridge> rev 0x0
1 on pci0.7.0
Jun  2 00:18:58 passer /kernel: chip3: <Intel 82371AB Power management controlle
r> rev 0x01 on pci0.7.3
Jun  2 00:18:58 passer /kernel: ahc0: <Adaptec 2940/DUAL Ultra SCSI adapter> rev
 0x03 int a irq 11 on pci0.14.0
Jun  2 00:18:58 passer /kernel: ahc0: aic7895 Wide Channel A, SCSI Id=7, 16/255 
SCBs
Jun  2 00:18:58 passer /kernel: ahc1: <Adaptec 2940/DUAL Ultra SCSI adapter> rev
 0x03 int b irq 14 on pci0.14.1
Jun  2 00:18:58 passer /kernel: ahc1: aic7895 Single Channel B, SCSI Id=7, 16/25
5 SCBs 
Jun  2 00:18:58 passer /kernel: xl0: <3Com 3c905-TX Fast Etherlink XL> rev 0x00
int a irq 14 on pci0.17.0
Jun  2 00:18:58 passer /kernel: xl0: Ethernet address: 00:c0:4f:ae:9f:e8
Jun  2 00:18:58 passer /kernel: xl0: autoneg complete, link status good (full-du
plex, 100Mbps)
Jun  2 00:18:58 passer /kernel: Probing for devices on PCI bus 1:
Jun  2 00:18:58 passer /kernel: vga0: <ATI model 4744 graphics accelerator> rev
0x5c on pci1.0.0
Jun  2 00:18:58 passer /kernel: Probing for devices on the ISA bus:
Jun  2 00:18:58 passer /kernel: sc0 on isa
Jun  2 00:18:58 passer /kernel: sc0: VGA color <16 virtual consoles, flags=0x0>
Jun  2 00:18:58 passer /kernel: atkbdc0 at 0x60-0x6f on motherboard
Jun  2 00:18:59 passer /kernel: atkbd0 irq 1 on isa
Jun  2 00:18:59 passer /kernel: psm0 not found
Jun  2 00:18:59 passer /kernel: sio0 at 0x3f8-0x3ff irq 4 flags 0x10 on isa
Jun  2 00:18:59 passer /kernel: sio0: type 16550A  
Jun  2 00:18:59 passer /kernel: sio1 at 0x2f8-0x2ff irq 3 on isa
Jun  2 00:18:59 passer /kernel: sio1: type 16550A
Jun  2 00:18:59 passer /kernel: fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
Jun  2 00:18:59 passer /kernel: fdc0: FIFO enabled, 8 bytes threshold
Jun  2 00:18:59 passer /kernel: fd0: 1.44MB 3.5in
Jun  2 00:18:59 passer /kernel: ppc0 at 0x378 irq 7 on isa
Jun  2 00:18:59 passer /kernel: ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in C
OMPATIBLE mode
Jun  2 00:18:59 passer /kernel: ppc0: FIFO with 16/16/8 bytes threshold
Jun  2 00:18:59 passer /kernel: vga0 at 0x3b0-0x3df maddr 0xa0000 msize 131072 o
n isa 
Jun  2 00:18:59 passer /kernel: npx0 on motherboard
Jun  2 00:18:59 passer /kernel: npx0: INT 16 interface
Jun  2 00:18:59 passer /kernel: IP packet filtering initialized, divert disabled
, rule-based forwarding disabled, unlimited logging
Jun  2 00:18:59 passer /kernel: IP Filter: initialized.  Default = pass all, Log
ging = enabled 
Jun  2 00:18:59 passer /kernel: Waiting 15 seconds for SCSI devices to settle
Jun  2 00:18:59 passer /kernel: cd0 at ahc0 bus 0 target 5 lun 0
Jun  2 00:18:59 passer /kernel: cd0: <NEC CD-ROM DRIVE:464 1.05> Removable CD-RO
M SCSI-2 device
Jun  2 00:18:59 passer /kernel: cd0: 20.000MB/s transfers (20.000MHz, offset 15)
Jun  2 00:18:59 passer /kernel: cd0: Attempt to query device size failed: NOT RE
ADY, Medium not present
Jun  2 00:18:59 passer /kernel: da0 at ahc0 bus 0 target 0 lun 0
Jun  2 00:18:59 passer /kernel: da0: <WDIGTL WDE9100-1807A4 1.30> Fixed Direct A
ccess SCSI-2 device
Jun  2 00:18:59 passer /kernel: da0: 40.000MB/s transfers (20.000MHz, offset 8,
16bit) 
Jun  2 00:18:59 passer /kernel: da0: 8683MB (17783204 512 byte sectors: 255H 63S
/T 1106C)
Jun  2 00:18:59 passer /kernel: WARNING: / was not properly dismounted
Jun  2 00:18:59 passer /kernel: ffs_mountfs: superblock updated for soft updates
Jun  2 00:18:59 passer last message repeated 2 times
Jun  2 00:18:59 passer savecore: reboot after panic: getnewbuf: inconsistent EMP
TY queue, qindex=0
Jun  2 00:18:59 passer savecore: writing core to /var/crash/vmcore.0
Jun  2 00:19:39 passer savecore: writing kernel to /var/crash/kernel.0

>Description:

	panic: getnewbuf: inconsistent EMPTY queue, qindex=0

	Core dump is unusable:

passer# gdb -k
GNU gdb 4.18
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-unknown-freebsd".
(kgdb) exec-file kernel.0
(kgdb) symbol-file /sys/compile/PASSER/kernel
Reading symbols from /sys/compile/PASSER/kernel...done.
(kgdb) core-file vmcore.0
IdlePTD 2883584
kernel symbol `gd_curpcb' not found.
(kgdb) bt
No stack.
(kgdb) passer# 

	Strings of vmcore.0:

ipfw: 65534 Deny UDP 142.32.110.29:123 142.32.254.9:123 out via xl0
panic: getnewbuf: inconsistent EMPTY queue, qindex=0
syncing disks... panic: getnewbuf: inconsistent EMPTY queue, qindex=0
dumping to dev 20401, offset 524288
dump 128 127 126 125 124 123 122 121 120 119 118 117 116 115 114 113 112 111 110
 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 
86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60
 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 3
3 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5
 4 3 2 1 

>How-To-Repeat:

	Unknown.  Running a memory intensive application (tripwire)
	at the time.

>Fix:
	
	Unknown.


>Release-Note:
>Audit-Trail:
>Unformatted:


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