I am running a laptop with the August 9th snap. When I am work, I run an NFS mount so that I can remotely mount CDs and directories to some Solaris 10 boxes in our lab. After I ssh to the remote server, I can successfully mount /home on my local box and install software. Yesterday, and again today, I needed to make a directory, and mistakenly attempted to "mkdir" from the remote machine on the NFS share. This locked up my local box to the point where I had to use the power button to get back up and running. I am able to re-create the issue, and luckily got a hold of a console cable to record the panic:
vrele: bad ref count: 0xd696e5e4, type VDIR, use 0, write 0, hold 1, flags (VBIOONFREELIST) tag VT_UFS, ino 6080270, on dev 0, 7 flags 0x0, effnlink 3, nlink 3 mode 040755, owner 0, group 0, size 1024 not locked panic: vrele: ref cnt Stopped at Debugger+0x4: leave RUN AT LEAST 'trace' AND 'ps' AND INCLUDE OUTPUT WHEN REPORTING THIS PANIC! DO NOT EVEN BOTHER REPORTING THIS WITHOUT INCLUDING THAT INFORMATION! ddb> trace Debugger(0,d696e5e4,d6a70578,d696e5e4,d6a70578) at Debugger+0x4 panic(d071fb3f,d696e5e4,d6a70578,0,d6965000) at panic+0x55 vrele(d696e5e4,dbf46bec,d6965078,d6a70578) at vrele+0xa2 nfsrv_mkdir(d6965000,d1c85b80,d6a70578,dbf46e2c,1) at nfsrv_mkdir+0x3f8 nfssvc_nfsd(d1aff1e0,34,4,0,d6af12f8) at nfssvc_nfsd+0x21c sys_nfssvc(d6a70578,dbf46f68,dbf46f58,3c00020c,4) at sys_nfssvc+0x17c syscall() at syscall+0x24e --- syscall (number 155) --- 0x1c000cdd: ddb> ps PID PPID PGRP UID S FLAGS WAIT COMMAND 13109 1 13109 0 3 0x40180 select sendmail 15402 30475 15402 0 3 0x4082 select ssh 21533 1 21533 0 3 0x4082 ttyin getty 30990 1 30990 0 3 0x4082 ttyin getty 26367 1 26367 0 3 0x4082 ttyin getty 330 1 330 0 3 0x4082 ttyin getty 30475 1 30475 0 3 0x4082 pause ksh 31362 1 31362 0 3 0x4082 ttyin ksh 13440 1 13440 0 3 0x80 select cron 14045 1 14045 0 3 0x80 select sshd 4021 1 4021 0 3 0x180 select inetd 23081 26646 26646 0 3 0x80 nfsd nfsd 2475 26646 26646 0 3 0x80 nfsd nfsd *24041 26646 26646 0 7 0 nfsd 10562 26646 26646 0 3 0x80 nfsd nfsd 26646 1 26646 0 3 0x80 netcon nfsd 3116 1 3116 0 3 0x80 select mountd 15609 12667 12667 74 3 0x180 bpf pflogd 17305 1 17305 28 3 0x180 poll portmap 12667 1 12667 0 3 0x80 netio pflogd 3261 5481 5481 73 2 0x180 syslogd 5481 1 5481 0 3 0x88 netio syslogd 17 0 0 0 3 0x100200 bored crypto 16 0 0 0 3 0x100200 aiodoned aiodoned 15 0 0 0 2 0x100200 update 14 0 0 0 3 0x100200 cleaner cleaner 13 0 0 0 3 0x100200 reaper reaper 12 0 0 0 3 0x100200 pgdaemon pagedaemon 11 0 0 0 3 0x100200 pftm pfpurge 10 0 0 0 3 0x100200 usbevt usb3 9 0 0 0 3 0x100200 usbevt usb2 8 0 0 0 3 0x100200 usbevt usb1 7 0 0 0 3 0x100200 usbtsk usbtask 6 0 0 0 3 0x100200 usbevt usb0 5 0 0 0 3 0x100200 acpi_idle acpi0 4 0 0 0 3 0x100200 bored syswq 3 0 0 0 3 0x40100200 idle0 2 0 0 0 3 0x100200 kmalloc kmthread 1 0 1 0 3 0x4080 wait init 0 -1 0 0 3 0x80200 scheduler swapper ddb> Here is a copy of my /etc/exports: # See exports(5) for more information. Be very careful: misconfiguration # of this file can result in your filesystems being readable by the world. /cdrom -alldirs -ro -network=10.10.11 -mask=255.255.255.0 /cdrom -alldirs -ro -network=10.20.11 -mask=255.255.255.0 /home -alldirs -ro -network=10.10.11 -mask=255.255.255.0 /home -alldirs -ro -network=10.20.11 -mask=255.255.255.0 -------------------------------------------------------------------------------------------------------------------- My best guess is that since they are not mounted read/write, that NFS is crashing. The other issue might be that Solaris 10 is trying to force the issue, and OpenBSD isn't having any of it. I thought I'd report it since it shouldn't panic just to tell me that I'm an idiot for trying to create a directory on a read-only mount... I will have access to this box the rest of the day, and then Monday if you need more information. dmesg is below: Regards, Bryan Brake dmesg: OpenBSD 4.6-current (GENERIC) #95: Sun Aug 9 12:54:05 MDT 2009 dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC cpu0: Intel(R) Pentium(R) M processor 1400MHz ("GenuineIntel" 686-class) 1.40 GHz cpu0: FPU,V86,DE,PSE,TSC,MSR,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,CFLUSH,DS,ACPI,M MX,FXSR,SSE,SSE2,TM,SBF,EST,TM2 real mem = 1072975872 (1023MB) avail mem = 1030811648 (983MB) mainbus0 at root bios0 at mainbus0: AT/286+ BIOS, date 06/29/05, BIOS32 rev. 0 @ 0xffe90, SMBIOS rev. 2.3 @ 0xf8c90 (62 entries) bios0: vendor Dell Computer Corporation version "A16" date 06/29/2005 bios0: Dell Computer Corporation Latitude D600 acpi0 at bios0: rev 0 acpi0: tables DSDT FACP ASF! acpi0: wakeup devices LID_(S3) PBTN(S4) PCI0(S3) USB0(S1) USB1(S1) USB2(S1) USB 3(S1) MODM(S3) PCIE(S4) acpitimer0 at acpi0: 3579545 Hz, 24 bits acpiprt0 at acpi0: bus 0 (PCI0) acpiprt1 at acpi0: bus 1 (AGP_) acpiprt2 at acpi0: bus 2 (PCIE) acpicpu0 at acpi0: C3, C3, C2, C1, PSS acpitz0 at acpi0: critical temperature 102 degC acpiac0 at acpi0: AC unit online acpibat0 at acpi0: BAT0 model "DELL 4M0106" serial 662 type LION oem "Panasonic " acpibat1 at acpi0: BAT1 not present acpibtn0 at acpi0: LID_ acpibtn1 at acpi0: PBTN acpibtn2 at acpi0: SBTN acpidock0 at acpi0: GDCK docked (15) acpivideo0 at acpi0: VID_ acpivout0 at acpivideo0: TV__ acpivout1 at acpivideo0: CRT_ acpivout2 at acpivideo0: CRT2 acpivout3 at acpivideo0: LCD_ acpivout4 at acpivideo0: DVI_ bios0: ROM list: 0xc0000/0x10000 cpu0 at mainbus0: (uniprocessor) cpu0: Enhanced SpeedStep 1396 MHz: speeds: 1400, 1400, 1400, 1400, 1200, 1000, 8 00, 600 MHz pci0 at mainbus0 bus 0: configuration mode 1 (bios) pchb0 at pci0 dev 0 function 0 "Intel 82855PM Host" rev 0x03 intelagp0 at pchb0 agp0 at intelagp0: aperture at 0xe0000000, size 0x8000000 ppb0 at pci0 dev 1 function 0 "Intel 82855PM AGP" rev 0x03 pci1 at ppb0 bus 1 vga1 at pci1 dev 0 function 0 "ATI Radeon Mobility M9" rev 0x02 wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) radeondrm0 at vga1: irq 11 drm0 at radeondrm0 uhci0 at pci0 dev 29 function 0 "Intel 82801DB USB" rev 0x01: irq 11 uhci1 at pci0 dev 29 function 1 "Intel 82801DB USB" rev 0x01: irq 11 uhci2 at pci0 dev 29 function 2 "Intel 82801DB USB" rev 0x01: irq 11 ehci0 at pci0 dev 29 function 7 "Intel 82801DB USB" rev 0x01: irq 11 usb0 at ehci0: USB revision 2.0 uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1 ppb1 at pci0 dev 30 function 0 "Intel 82801BAM Hub-to-PCI" rev 0x81 pci2 at ppb1 bus 2 bge0 at pci2 dev 0 function 0 "Broadcom BCM5705M" rev 0x01, BCM5705 A1 (0x3001) : irq 11, address 00:0f:1f:b8:52:5f brgphy0 at bge0 phy 1: BCM5705 10/100/1000baseT PHY, rev. 1 cbb0 at pci2 dev 1 function 0 "O2 Micro OZ711EC1 SmartCardBus" rev 0x20: irq 11 , CardBus support disabled cbb1 at pci2 dev 1 function 1 "O2 Micro OZ711EC1 SmartCardBus" rev 0x20: irq 11 , CardBus support disabled cardslot0 at cbb0 slot 0 flags 0 pcmcia0 at cardslot0 cardslot1 at cbb1 slot 1 flags 0 pcmcia1 at cardslot1 ichpcib0 at pci0 dev 31 function 0 "Intel 82801DBM LPC" rev 0x01 pciide0 at pci0 dev 31 function 1 "Intel 82801DBM IDE" rev 0x01: DMA, channel 0 configured to compatibility, channel 1 configured to compatibility wd0 at pciide0 channel 0 drive 0: <Hitachi HTS541080G9AT00> wd0: 16-sector PIO, LBA, 76319MB, 156301488 sectors wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 5 atapiscsi0 at pciide0 channel 1 drive 0 scsibus0 at atapiscsi0: 2 targets cd0 at scsibus0 targ 0 lun 0: <TSSTcorp, DVD+-RW TS-L632D, DE03> ATAPI 5/cdrom r emovable cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2 auich0 at pci0 dev 31 function 5 "Intel 82801DB AC97" rev 0x01: irq 11, ICH4 AC 97 ac97: codec id 0x83847650 (SigmaTel STAC9750/51) ac97: codec features headphone, 20 bit DAC, 20 bit ADC, SigmaTel 3D audio0 at auich0 "Intel 82801DB Modem" rev 0x01 at pci0 dev 31 function 6 not configured usb1 at uhci0: USB revision 1.0 uhub1 at usb1 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb2 at uhci1: USB revision 1.0 uhub2 at usb2 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb3 at uhci2: USB revision 1.0 uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1 isa0 at ichpcib0 isadma0 at isa0 com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo com0: console pckbc0 at isa0 port 0x60/5 pckbd0 at pckbc0 (kbd slot) pckbc0: using irq 1 for kbd slot wskbd0 at pckbd0: console keyboard, using wsdisplay0 pms0 at pckbc0 (aux slot) pckbc0: using irq 12 for aux slot wsmouse0 at pms0 mux 0 pcppi0 at isa0 port 0x61 midi0 at pcppi0: <PC speaker> spkr0 at pcppi0 npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16 biomask eded netmask eded ttymask ffff mtrr: Pentium Pro MTRR support "SCR241 PCMCIA, Smart Card Reader" at pcmcia0 function 0 not configured "O2Micro, SmartCardBus Reader, V1.0" at pcmcia1 function 0 not configured uhub4 at uhub0 port 6 "Dell product 0x0058" rev 2.00/0.00 addr 2 uhub5 at uhub4 port 4 "NEC Corporation USB2.0 Hub Controller" rev 2.00/1.00 add r 3 uhidev0 at uhub5 port 1 configuration 1 interface 0 "Logitech USB Receiver" rev 2.00/5.00 addr 4 uhidev0: iclass 3/1 ums0 at uhidev0: 16 buttons, Z dir wsmouse1 at ums0 mux 0 uhidev1 at uhub5 port 1 configuration 1 interface 1 "Logitech USB Receiver" rev 2.00/5.00 addr 4 uhidev1: iclass 3/0, 17 report ids uhid0 at uhidev1 reportid 3: input=4, output=0, feature=0 uhid1 at uhidev1 reportid 16: input=6, output=6, feature=0 uhid2 at uhidev1 reportid 17: input=19, output=19, feature=0 softraid0 at root root on wd0a swap on wd0b dump on wd0b