usb/83504: SpeedTouch USB stop working on recent current (and RELENG_6)

[Diego]

>Number:         83504
>Category:       usb
>Synopsis:       SpeedTouch USB stop working on recent current (and RELENG_6)
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-usb
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Jul 15 11:30:15 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator:     Diego
>Release:        FreeBSD 6
>Organization:
>Environment:
My environment is FreeBSD 6 Beta1 with GENERIC kernel for i386 (I cannot do uname -a now).

Jul 15 10:45:40  kernel: FreeBSD 6.0-BETA1 #0: Tue Jul 12 18:05:55 UTC 2005
>Description:
I'm using speedtouch-1.3.1 with pppoa2

When I run ppp -background adsl it crash and kernel report this backtrace:

Jul 15 11:30:32  kernel: Purging 2 threads from ugen0.1
Jul 15 11:30:32  kernel: Sleeping on "usbdly" with the following non-sleepable locks held:
Jul 15 11:30:32  kernel: exclusive sleep mutex cdev r = 0 (0xc091c0a0) locked @ /usr/src/sys/kern/kern_conf.c:60
Jul 15 11:30:32  kernel: KDB: stack backtrace:
Jul 15 11:30:32  kernel: kdb_backtrace(1,c1da4830,c1da5900,c2863800,de987ac0) at kdb_backtrace+0x29
Jul 15 11:30:32  kernel: witness_warn(5,0,c08552d2,c084b980) at witness_warn+0x18e
Jul 15 11:30:32  kernel: msleep(de987ae8,0,4c,c084b980,15) at msleep+0x42
Jul 15 11:30:32  kernel: usb_delay_ms(c1afe000,14) at usb_delay_ms+0x67
Jul 15 11:30:32  kernel: ohci_abort_xfer(c2863800,6,de987b28,c05d77d7,c2863800) at ohci_abort_xfer+0x110
Jul 15 11:30:32  kernel: ohci_device_intr_abort(c2863800) at ohci_device_intr_abort+0x1c
Jul 15 11:30:32  kernel: usbd_ar_pipe(c1fde580) at usbd_ar_pipe+0x1f
Jul 15 11:30:32  kernel: usbd_abort_pipe(c1fde580) at usbd_abort_pipe+0xb
Jul 15 11:30:32  kernel: ugenpurge(c2787a00,c08511cd,2,c2787a78,1) at ugenpurge+0x56
Jul 15 11:30:32  kernel: destroy_devl(c2787a00,de987b88,c05c762e,c2787a00,0) at destroy_devl+0xe2
Jul 15 11:30:32  kernel: destroy_dev(c2787a00) at destroy_dev+0x10
Jul 15 11:30:32  kernel: ugen_destroy_devnodes(c1b4b000,303db60,c1bf4640,3856317,c1b11b1c) at ugen_destroy_devnodes+0x62
Jul 15 11:30:32  kernel: ugen_set_interface(c1b4b000,1,1) at ugen_set_interface+0x13e
Jul 15 11:30:32  kernel: ugen_do_ioctl(c1b4b000,0,c00c5567,c1bf4650,3) at ugen_do_ioctl+0x2a5
Jul 15 11:30:32  kernel: ugenioctl(c1b23a00,c00c5567,c1bf4650,3,c1da5900) at ugenioctl+0x63
Jul 15 11:30:32  kernel: devfs_ioctl_f(c1c28678,c00c5567,c1bf4650,c2252080,c1da5900) at devfs_ioctl_f+0xc7
Jul 15 11:30:32  kernel: ioctl(c1da5900,de987d04,3,3,296) at ioctl+0x370
Jul 15 11:30:32  kernel: syscall(3b,3b,3b,3,0) at syscall+0x22f
Jul 15 11:30:32  kernel: Xint0x80_syscall() at Xint0x80_syscall+0x1f
Jul 15 11:30:32  kernel: --- syscall (54, FreeBSD ELF32, ioctl), eip = 0x280b9287, esp = 0xbfbfde9c, ebp = 0xbfbfdec8 ---
Jul 15 11:30:32  kernel: lock order reversal
Jul 15 11:30:32  kernel: 1st 0xc091c0a0 cdev (cdev) @ /usr/src/sys/kern/kern_conf.c:60
Jul 15 11:30:32  kernel: 2nd 0xc091dba0 Giant (Giant) @ /usr/src/sys/kern/kern_synch.c:236
Jul 15 11:30:32  kernel: KDB: stack backtrace:
Jul 15 11:30:32  kernel: kdb_backtrace(0,ffffffff,c092eaa0,c092efc8,c08b9464) at kdb_backtrace+0x29
Jul 15 11:30:32  kernel: witness_checkorder(c091dba0,9,c085530b,ec) at witness_checkorder+0x564
Jul 15 11:30:32  kernel: _mtx_lock_flags(c091dba0,0,c085530b,ec) at _mtx_lock_flags+0x5b
Jul 15 11:30:32  kernel: msleep(de987ae8,0,4c,c084b980,15) at msleep+0x386
Jul 15 11:30:32  kernel: usb_delay_ms(c1afe000,14) at usb_delay_ms+0x67
Jul 15 11:30:32  kernel: ohci_abort_xfer(c2863800,6,de987b28,c05d77d7,c2863800) at ohci_abort_xfer+0x110
Jul 15 11:30:32  kernel: ohci_device_intr_abort(c2863800) at ohci_device_intr_abort+0x1c
Jul 15 11:30:32  kernel: usbd_ar_pipe(c1fde580) at usbd_ar_pipe+0x1f
Jul 15 11:30:32  kernel: usbd_abort_pipe(c1fde580) at usbd_abort_pipe+0xb
Jul 15 11:30:32  kernel: ugenpurge(c2787a00,c08511cd,2,c2787a78,1) at ugenpurge+0x56
Jul 15 11:30:32  kernel: destroy_devl(c2787a00,de987b88,c05c762e,c2787a00,0) at destroy_devl+0xe2
Jul 15 11:30:32  kernel: destroy_dev(c2787a00) at destroy_dev+0x10
Jul 15 11:30:32  kernel: ugen_destroy_devnodes(c1b4b000,303db60,c1bf4640,3856317,c1b11b1c) at ugen_destroy_devnodes+0x62
Jul 15 11:30:32  kernel: ugen_set_interface(c1b4b000,1,1) at ugen_set_interface+0x13e
Jul 15 11:30:32  kernel: ugen_do_ioctl(c1b4b000,0,c00c5567,c1bf4650,3) at ugen_do_ioctl+0x2a5
Jul 15 11:30:32  kernel: ugenioctl(c1b23a00,c00c5567,c1bf4650,3,c1da5900) at ugenioctl+0x63
Jul 15 11:30:32  kernel: devfs_ioctl_f(c1c28678,c00c5567,c1bf4650,c2252080,c1da5900) at devfs_ioctl_f+0xc7
Jul 15 11:30:32  kernel: ioctl(c1da5900,de987d04,3,3,296) at ioctl+0x370
Jul 15 11:30:32  kernel: syscall(3b,3b,3b,3,0) at syscall+0x22f
Jul 15 11:30:32  kernel: Xint0x80_syscall() at Xint0x80_syscall+0x1f
Jul 15 11:30:32  kernel: --- syscall (54, FreeBSD ELF32, ioctl), eip = 0x280b9287, esp = 0xbfbfde9c, ebp = 0xbfbfdec8 ---
Jul 15 11:30:32  kernel: Purging 2 threads from ugen0.1
Jul 15 11:30:44  last message repeated 118 times

and then infinitely repeat "Purging 2 threads from ugen0.1" in loop
>How-To-Repeat:

>Fix:

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