I had a panic when I attempted to mount a usb stick today. This particular stick seems to work fine on Windows machines without error.
A dmesg follows the ddb output. --- messages on insert: umass0 at uhub3 port 5 configuration 1 interface 0 umass0: SanDisk Corporation Cruzer Mini, rev 2.00/1.02, addr 2 umass0: using SCSI over Bulk-Only scsibus1 at umass0: 2 targets sd0 at scsibus1 targ 1 lun 0: <Generic, STORAGE DEVICE, 1.02> SCSI0 0/direct removable sd0: 250MB, 250 cyl, 64 head, 32 sec, 512 bytes/sec, 512000 sec total umass0: Invalid CSW: tag 50 should be 51 --- panic, ddb trace & ps: panic: ehci_device_clear_toggle: queue active 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(d0730ec0,7fffffff,e7b57ebc,d1a73600,0) at Debugger+0x4 panic(d0637f80,0,0,e7b57eac,d02025e9) at panic+0x63 ehci_noop(d1898300,40,e7b57edc,d03240e0,d06f51c8) at ehci_noop usbd_clear_endpoint_toggle(d1898300,40,e7b57efc,d15e0b00,d15e0b00) at usbd_clear_endpoint_toggle+0x10 umass_clear_endpoint_stall(d1a73600,0,d15d9e00,d12e7000) at umass_clear_endpoint_stall+0x28 usb_transfer_complete(d15e0b00,2614221,e7b57f5c,d0322e8d,d8d80) at usb_transfer_complete+0x17a ehci_abort_xfer(d15e0b00,f,e7b57f8c,d05d105c,d15e0b6c) at ehci_abort_xfer+0x132 ehci_timeout_task(d15e0b00,d0863e88,d0200c29,d69425a0,d69425a0) at ehci_timeout_task+0x1e usb_task_thread(d69425a0) at usb_task_thread+0x44 Bad frame pointer: 0xd0863e88 ddb> ps PID PPID PGRP UID S FLAGS WAIT COMMAND 31037 29122 29122 1000 3 0x4006 scsicmd mount_msdos 29122 9842 29122 1000 3 0x4086 wait mount 2237 7565 10055 503 3 0x8c netio postgres 16372 7565 10055 503 3 0x8c netio postgres 6808 1 6808 557 3 0x184 bpf snort 23030 1 23030 557 3 0x184 bpf snort 9842 1 9842 1000 3 0x4086 pause tcsh 18821 21000 18821 1001 3 0x44186 nanosleep authpf 21000 6863 6863 1001 3 0x184 select sshd 6863 30060 6863 0 3 0x4184 netio sshd 2423 1 2423 1000 3 0x4086 ttyin tcsh 15186 1 15186 0 3 0x4086 ttyin getty 23135 8285 8285 73 3 0x184 poll syslogd 8285 1 8285 0 3 0x84 netio syslogd 2500 14515 14515 67 3 0x184 semwait httpd 16000 1 16000 0 3 0x84 select mountd 8682 14515 14515 67 3 0x184 semwait httpd 16449 14515 14515 67 3 0x184 semwait httpd 21179 14515 14515 67 3 0x184 semwait httpd 23796 14515 14515 67 3 0x184 semwait httpd 18609 14515 14515 67 3 0x184 semwait httpd 28825 14515 14515 67 3 0x184 semwait httpd 800 14515 14515 67 3 0x184 select httpd 14515 1 14515 67 3 0x184 select httpd 30452 1 30452 0 3 0x4086 ttyin getty 23523 1 23523 0 3 0x4086 ttyin getty 22639 1 22639 0 3 0x84 select cron 30137 14354 14354 534 3 0x4184 poll python2.3 14354 1 14354 0 3 0x84 poll python2.3 25134 23789 10055 503 3 0x8e select postgres 23789 7565 10055 503 3 0x8e select postgres 19638 7565 10055 503 3 0x8e select postgres 7565 1 10055 503 3 0x408e select postgres 29910 1 29910 32767 3 0x184 poll openvpn 471 7343 7343 0 3 0x185 pause smbd 14270 1 14270 0 3 0x85 select nmbd 7343 1 7343 0 3 0x185 select smbd 32501 1 13244 0 3 0x84 nanosleep smartd 26361 1 10055 0 3 0x86 nanosleep perl 6990 30485 30184 0 3 0x84 netio tcpdump 30485 30184 30184 76 3 0x4184 bpf tcpdump 14255 1 10055 0 3 0x4086 select kpasswdd 24117 1 24117 0 3 0x4086 select kadmind 22137 1 10055 0 3 0x4087 select kdc 30184 1 30184 0 3 0x84 piperd spamlogd 14346 15883 15883 62 3 0x184 piperd spamd 18781 15883 15883 62 3 0x184 select spamd 15883 1 15883 62 3 0x184 nanosleep spamd 30060 1 30060 0 3 0x84 select sshd 26781 1 26781 0 3 0x40184 select sendmail 2444 1 2444 0 3 0x184 select inetd 27403 1 27403 71 3 0x184 kqread ftp-proxy 32749 1 32749 77 3 0x184 poll dhcpd 15984 14186 14186 83 3 0x184 poll ntpd 14186 1 14186 0 3 0x84 poll ntpd 10235 10338 10338 0 3 0x84 nfsd nfsd 4503 10338 10338 0 3 0x84 nfsd nfsd 11673 10338 10338 0 3 0x84 nfsd nfsd 15316 10338 10338 0 3 0x84 nfsd nfsd 10338 1 10338 0 3 0x84 netcon nfsd 15921 1 15921 28 3 0x184 poll portmap 14136 12812 12812 70 3 0x184 select named 12812 1 12812 0 3 0x184 netio named 15160 18009 18009 74 3 0x184 bpf pflogd 18009 1 18009 0 3 0x84 netio pflogd 3262 1 3262 77 3 0x184 poll dhclient 27999 1 10055 0 3 0x86 poll dhclient 10677 1 10677 0 3 0x84 mfsidl mount_mfs 17 0 0 0 3 0x100204 crypto_wa crypto 16 0 0 0 3 0x100204 aiodoned aiodoned 15 0 0 0 3 0x100204 syncer update 14 0 0 0 3 0x100204 cleaner cleaner 13 0 0 0 3 0x100204 reaper reaper 12 0 0 0 3 0x100204 pgdaemon pagedaemon 11 0 0 0 3 0x100204 pftm pfpurge 10 0 0 0 3 0x100204 timeout sensors 9 0 0 0 3 0x100204 wait wskbd_hotkey 8 0 0 0 3 0x100204 usbevt usb3 7 0 0 0 3 0x100204 usbevt usb2 6 0 0 0 3 0x100204 usbevt usb1 * 5 0 0 0 7 0x100204 usbtask 4 0 0 0 3 0x100204 usbevt usb0 3 0 0 0 3 0x100204 apmev apm0 2 0 0 0 3 0x100204 kmalloc kmthread 1 0 1 0 3 0x4084 wait init 0 -1 0 0 3 0x80204 scheduler swapper OpenBSD 3.9-current (GENERIC) #933: Fri Jun 30 14:40:22 MDT 2006 [EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC cpu0: AMD Sempron(tm) 2600+ ("AuthenticAMD" 686-class, 256KB L2 cache) 1.84 GHz cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE real mem = 502820864 (491036K) avail mem = 452689920 (442080K) using 4256 buffers containing 25243648 bytes (24652K) of memory mainbus0 (root) bios0 at mainbus0: AT/286+(37) BIOS, date 01/07/05, BIOS32 rev. 0 @ 0xfb9b0, SMBIOS rev. 2.2 @ 0xf0000 (44 entries) bios0: ASUS A7VT apm0 at bios0: Power Management spec V1.2 apm0: AC on, battery charge unknown apm0: flags 70102 dobusy 1 doidle 1 pcibios0 at bios0: rev 2.1 @ 0xf0000/0xda84 pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfda10/112 (5 entries) pcibios0: PCI Exclusive IRQs: 3 5 10 11 pcibios0: PCI Interrupt Router at 000:17:0 ("VIA VT82C596A ISA" rev 0x00) pcibios0: PCI bus #1 is the last bus bios0: ROM list: 0xc0000/0x7e00 0xc8000/0x8000! cpu0 at mainbus0 pci0 at mainbus0 bus 0: configuration mode 1 (no bios) pchb0 at pci0 dev 0 function 0 "VIA VT8378 PCI" rev 0x00 ppb0 at pci0 dev 1 function 0 "VIA VT8377 AGP" rev 0x00 pci1 at ppb0 bus 1 vga1 at pci1 dev 0 function 0 "VIA VT8378 VGA" rev 0x01: aperture at 0xe4000000, size 0x10000000 wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) dc0 at pci0 dev 8 function 0 "Lite-On PNIC-II" rev 0x25: irq 10, address 00:a0:cc:e3:42:d6 dcphy0 at dc0 phy 31: internal PHY uhci0 at pci0 dev 16 function 0 "VIA VT83C572 USB" rev 0x80: irq 11 usb0 at uhci0: USB revision 1.0 uhub0 at usb0 uhub0: VIA UHCI root hub, rev 1.00/1.00, addr 1 uhub0: 2 ports with 2 removable, self powered uhci1 at pci0 dev 16 function 1 "VIA VT83C572 USB" rev 0x80: irq 10 usb1 at uhci1: USB revision 1.0 uhub1 at usb1 uhub1: VIA UHCI root hub, rev 1.00/1.00, addr 1 uhub1: 2 ports with 2 removable, self powered uhci2 at pci0 dev 16 function 2 "VIA VT83C572 USB" rev 0x80: irq 5 usb2 at uhci2: USB revision 1.0 uhub2 at usb2 uhub2: VIA UHCI root hub, rev 1.00/1.00, addr 1 uhub2: 2 ports with 2 removable, self powered ehci0 at pci0 dev 16 function 3 "VIA VT6202 USB" rev 0x82: irq 3 usb3 at ehci0: USB revision 2.0 uhub3 at usb3 uhub3: VIA EHCI root hub, rev 2.00/1.00, addr 1 uhub3: 6 ports with 6 removable, self powered viapm0 at pci0 dev 17 function 0 "VIA VT8235 ISA" rev 0x00 iic0 at viapm0 pciide0 at pci0 dev 17 function 1 "VIA VT82C571 IDE" rev 0x06: ATA133, channel 0 configured to compatibility, channel 1 configured to compatibility wd0 at pciide0 channel 0 drive 0: <ExcelStor Technology J880> wd0: 16-sector PIO, LBA48, 78533MB, 160836480 sectors wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 6 atapiscsi0 at pciide0 channel 1 drive 0 scsibus0 at atapiscsi0: 2 targets cd0 at scsibus0 targ 0 lun 0: <LITE-ON, DVDRW SHW-160P6S, PS01> SCSI0 5/cdrom removable wd1 at pciide0 channel 1 drive 1: <Maxtor 92732U8> wd1: 16-sector PIO, LBA, 26059MB, 53369568 sectors cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 4 wd1(pciide0:1:1): using PIO mode 4, Ultra-DMA mode 4 auvia0 at pci0 dev 17 function 5 "VIA VT8233 AC97" rev 0x50: irq 5 ac97: codec id 0x41445368 (Analog Devices AD1888) ac97: codec features headphone, 20 bit DAC, No 3D Stereo audio0 at auvia0 vr0 at pci0 dev 18 function 0 "VIA RhineII-2" rev 0x74: irq 11, address 00:11:2f:85:b1:90 ukphy0 at vr0 phy 1: Generic IEEE 802.3u media interface, rev. 10: OUI 0x004063, model 0x0032 isa0 at mainbus0 isadma0 at isa0 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 pcppi0 at isa0 port 0x61 midi0 at pcppi0: <PC speaker> spkr0 at pcppi0 lpt0 at isa0 port 0x378/4 irq 7 lm0 at isa0 port 0x290/8: W83697HF npx0 at isa0 port 0xf0/16: using exception 16 pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo fdc0 at isa0 port 0x3f0/6 irq 6 drq 2 fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec biomask ff6d netmask ff6d ttymask ffef pctr: user-level cycle counter enabled mtrr: Pentium Pro MTRR support uhidev0 at uhub0 port 1 configuration 1 interface 0 uhidev0: vendor 0x062a product 0x0000, rev 1.10/0.00, addr 2, iclass 3/1 ums0 at uhidev0: 3 buttons and Z dir. wsmouse0 at ums0 mux 0 dkcsum: wd0 matches BIOS drive 0x80 dkcsum: wd1 matches BIOS drive 0x81 root on wd0a rootdev=0x0 rrootdev=0x300 rawdev=0x302