Re: panic at ehci_abort_xfer

On 10/2/08, Boris Samorodov <bsam_at_ipt.ru> wrote:
> Hello All,
>
>
> I've got a panic at today's CURRENT/i386 after inserting an USB
> Linksys Wifi Adapter (the adapter had been scanning):

Which driver?
This is first time it happened on same hardware, and it was working
without problems on older(how much) CURRENT?
Or, this is first time you have insterted that adapter in CURRENT?

Look in usb/124758 maybe it is same bug.

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> This GDB was configured as "i386-marcel-freebsd"...
>
> Unread portion of the kernel message buffer:
>
> Fatal trap 12: page fault while in kernel mode
> cpuid = 1; apic id = 01
> fault virtual address	= 0x38
> fault code		= supervisor read, page not present
> instruction pointer	= 0x20:0xc072fb57
> stack pointer	        = 0x28:0xc3ed6c94
> frame pointer	        = 0x28:0xc3ed6ccc
> code segment		= base 0x0, limit 0xfffff, type 0x1b
> 			= DPL 0, pres 1, def32 1, gran 1
> processor eflags	= interrupt enabled, resume, IOPL = 0
> current process		= 15 (usbtask-hc)
> trap number		= 12
> panic: page fault
> cpuid = 1
> Uptime: 8m11s
> Physical memory: 1003 MB
> Dumping 54 MB: 39 23 7
> [...]
> #0  doadump () at pcpu.h:221
> 	in pcpu.h
> (kgdb) list *0xc072fb57
> 0xc072fb57 is in ehci_abort_xfer (/usr/src/sys/dev/usb/ehci.c:2959).
> 2954			 * (if there is one). We only need to do this if
> 2955			 * it was previously pointing to us.
> 2956			 */
> 2957			for (sqtd = exfer->sqtdstart; ; sqtd = sqtd->nextqtd) {
> 2958				if (cur == sqtd->physaddr) {
> 2959					hit++;
> 2960				}
> 2961				if (sqtd == exfer->sqtdend)
> 2962					break;
> 2963			}
> (kgdb) backtrace
> #0  doadump () at pcpu.h:221
> #1  0xc07fdfbc in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:420
> #2  0xc07fe2c2 in panic (fmt=) at /usr/src/sys/kern/kern_shutdown.c:576
> #3  0xc0b27983 in trap_fatal (frame=0xc3ed6c54, eva=56)
>     at /usr/src/sys/i386/i386/trap.c:943
> #4  0xc0b27c00 in trap_pfault (frame=0xc3ed6c54, usermode=0, eva=56)
>     at /usr/src/sys/i386/i386/trap.c:856
> #5  0xc0b2860a in trap (frame=0xc3ed6c54) at
> /usr/src/sys/i386/i386/trap.c:536
> #6  0xc0b0c59b in calltrap () at /usr/src/sys/i386/i386/exception.s:165
> #7  0xc072fb57 in ehci_abort_xfer (xfer=) at
> /usr/src/sys/dev/usb/ehci.c:2959
> #8  0xc0731360 in ehci_timeout_task (addr=0xc482ee00)
>     at /usr/src/sys/dev/usb/ehci.c:3112
> #9  0xc07644b1 in usb_task_thread (arg=0xc0d05dc0)
>     at /usr/src/sys/dev/usb/usb.c:485
> #10 0xc07dc633 in fork_exit (callout=0xc0764400 <usb_task_thread>,
>     arg=0xc0d05dc0, frame=0xc3ed6d38) at /usr/src/sys/kern/kern_fork.c:810
> #11 0xc0b0c610 in fork_trampoline () at
> /usr/src/sys/i386/i386/exception.s:270
> (kgdb) quit
> -----
>
>
> WBR
> --
> Boris Samorodov (bsam)
> Research Engineer, http://www.ipt.ru Telephone & Internet SP
> FreeBSD committer, http://www.FreeBSD.org The Power To Serve
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