Date: Fri, 4 Dec 1998 07:47:28 +1100 From: Peter Jeremy <peter.jeremy@auss2.alcatel.com.au> To: freebsd-current@FreeBSD.ORG Subject: panic: getnewbuf inconsistent EMPTY queue in 3.0-RELEASE Message-ID: <98Dec4.074651est.40325@border.alcanet.com.au>
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I've just upgraded a Dell OptiPlex GXi from 32MB to 96MB. When I increase MAXUSERS from 20 to 40 and SEMMNU from 350 to 1000, the system panics `getnewbuf: inconsistent EMPTY queue, qindex=0' immediately after the message `changing root device to wd0s1a'. I don't have a crashdump because (as recommended) I use dumpon(8) to specify the dumpdev, and the system doesn't get that far :-(. The system configuration is shown below (as reported by a good kernel). Can anyone offer any quick suggestions (I suspect increasing MAXUSERS or SEMMNU has caused the kernel to run out of memory somewhere, but I'm not sure where). Copyright (c) 1992-1998 FreeBSD Inc. Copyright (c) 1982, 1986, 1989, 1991, 1993 The Regents of the University of California. All rights reserved. FreeBSD 3.0-RELEASE #4: Fri Dec 4 06:45:33 EST 1998 root@:/usr/src/sys/compile/pc1762 Timecounter "i8254" frequency 1193182 Hz cost 2376 ns CPU: Pentium/P54C (132.95-MHz 586-class CPU) Origin = "GenuineIntel" Id = 0x52c Stepping=12 Features=0x1bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8> real memory = 100663296 (98304K bytes) avail memory = 95449088 (93212K bytes) Probing for devices on PCI bus 0: chip0: <Intel 82439> rev 0x03 on pci0.0.0 chip1: <Intel 82371SB PCI to ISA bridge> rev 0x01 on pci0.7.0 ide_pci0: <Intel PIIX3 Bus-master IDE controller> rev 0x00 on pci0.7.1 ahc0: <Adaptec 2940 SCSI adapter> rev 0x03 int a irq 11 on pci0.15.0 ahc0: aic7870 Wide Channel A, SCSI Id=7, 16/255 SCBs vga0: <S3 Trio graphics accelerator> rev 0x44 int a irq 9 on pci0.16.0 xl0: <3Com 3c905 Fast Etherlink XL 10/100BaseTX> rev 0x00 int a irq 11 on pci0.17.0 xl0: Ethernet address: 00:c0:4f:ca:7b:e7 xl0: autoneg complete, link status good (full-duplex, 100Mbps) Probing for PnP devices: CSN 1 Vendor ID: CSC6836 [0x3668630e] Serial 0xffffffff Comp ID: @@@0000 [0x00000000] Probing for devices on the ISA bus: sc0 at 0x60-0x6f irq 1 on motherboard sc0: VGA color <16 virtual consoles, flags=0x0> ed0 at 0x300-0x31f irq 10 maddr 0xcc000 msize 16384 on isa ed0: address 00:00:c0:57:99:47, type WD8013EPC (16 bit) lpt0 at 0x378-0x37f irq 7 on isa lpt0: Interrupt-driven port lp0: TCP/IP capable interface psm0 at 0x60-0x64 irq 12 on motherboard psm0: model Generic PS/2 mouse, device ID 0 sio0 at 0x3f8-0x3ff irq 4 on isa sio0: type 16550A wdc0 at 0x1f0-0x1f7 irq 14 flags 0xb0ffb0ff on isa wdc0: unit 0 (wd0): <WDC AC22100H>, LBA, DMA, 32-bit, multi-block-16 wd0: 2014MB (4124736 sectors), 1023 cyls, 64 heads, 63 S/T, 512 B/S fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa fdc0: FIFO enabled, 8 bytes threshold fd0: 1.44MB 3.5in npx0 on motherboard npx0: INT 16 interface apm0 on isa apm: found APM BIOS version 1.0 Intel Pentium F00F detected, installing workaround ccd0-3: Concatenated disk drivers Waiting 2 seconds for SCSI devices to settle changing root device to wd0s1a da1 at ahc0 bus 0 target 1 lun 0 da1: <SEAGATE ST32151N 0590> Fixed Direct Access SCSI2 device da1: 10.0MB/s transfers (10.0MHz, offset 15), Tagged Queueing Enabled da1: 2049MB (4197405 512 byte sectors: 64H 32S/T 2049C) da0 at ahc0 bus 0 target 0 lun 0 da0: <SEAGATE ST32430N 0510> Fixed Direct Access SCSI2 device da0: 10.0MB/s transfers (10.0MHz, offset 15), Tagged Queueing Enabled da0: 2049MB (4197405 512 byte sectors: 64H 32S/T 2049C) da2 at ahc0 bus 0 target 2 lun 0 da2: <SEAGATE ST32550N 0019> Fixed Direct Access SCSI2 device da2: 10.0MB/s transfers (10.0MHz, offset 15), Tagged Queueing Enabled da2: 2047MB (4194058 512 byte sectors: 64H 32S/T 2047C) ffs_mountfs: superblock updated System configuration file: machine "i386" cpu "I586_CPU" ident "pc1762" maxusers 40 options "MAXDSIZ=(256*1024*1024)" options "DFLDSIZ=(256*1024*1024)" options "MAXMEM=(96*1024)" options FAILSAFE #Be conservative config kernel root on wd0 options "COMPAT_43" #Compatible with BSD 4.3 [KEEP THIS!] options SYSVSHM options SHMMAX="(16*1024*1024)" options SYSVSEM options SEMUME=1 options SEMMNU=1000 options SYSVMSG options "MD5" options KTRACE #kernel tracing options PERFMON options USERCONFIG #boot -c editor options VISUAL_USERCONFIG #visual boot -c editor options INET #InterNETworking pseudo-device ether pseudo-device loop options FFS #Berkeley Fast Filesystem options FFS_ROOT # Allow FFS root options SOFTUPDATES options NFS #Network Filesystem options FDESC #File descriptor filesystem options MFS #Memory filesystem options PROCFS #Process filesystem pseudo-device pty 256 pseudo-device speaker pseudo-device gzip # Exec gzipped a.out's pseudo-device vn pseudo-device ccd 4 pseudo-device bpfilter 4 controller scbus0 device da0 # SCSI disks device st0 # SCSI tapes device pass0 # SCSI passthru for CAM controller isa0 options "AUTO_EOI_1" device ed0 at isa? port 0x300 net irq 10 iomem 0xcc000 vector edintr controller pci0 controller pnp0 device sc0 at isa? port "IO_KBD" tty irq 1 vector scintr options SC_DISABLE_REBOOT device npx0 at isa? port "IO_NPX" flags 0x0 irq 13 vector npxintr controller wdc0 at isa? port "IO_WD1" flags 0xb0ffb0ff bio irq 14 vector wdintr disk wd0 at wdc0 drive 0 disk wd1 at wdc0 disable drive 1 controller wdc1 at isa? disable port "IO_WD2" flags 0xb0ffb0ff bio irq 15 vector wdintr disk wd2 at wdc1 drive 0 disk wd3 at wdc1 disable drive 1 options "CMD640" controller fdc0 at isa? port "IO_FD1" bio irq 6 drq 2 vector fdintr disk fd0 at fdc0 drive 0 disk fd1 at fdc0 disable drive 1 device lpt0 at isa? port? tty irq 7 vector lptintr device psm0 at isa? port "IO_KBD" conflicts tty irq 12 vector psmintr device apm0 at isa? # Advanced Power Management device sio0 at isa? port "IO_COM1" tty irq 4 vector siointr device sio1 at isa? disable port "IO_COM2" tty irq 3 vector siointr controller ahc0 options AHC_ALLOW_MEMIO # Memory-mapped I/O device xl0 options NO_LKM options "CLK_USE_TSC_CALIBRATION" options PPS_SYNC Peter -- Peter Jeremy (VK2PJ) peter.jeremy@alcatel.com.au Alcatel Australia Limited 41 Mandible St Phone: +61 2 9690 5019 ALEXANDRIA NSW 2015 Fax: +61 2 9690 5247 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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