> > This message has been generated automatically as a part of a report
> > of recent regressions.
> >
> > The following bug entry is on the current list of known regressions
> > from 2.6.25. Please verify if it still should be listed.
> >
> >
> > Bug-Entry :
http://bugzilla.kernel.org/show_bug.cgi?id=10713
> > Subject : ehci splatter in 2.6.26-rc2
> > Submitter : Lennert Buytenhek <buytenh@wantstofly.org>
> > Date : 2008-05-14 11:24 (5 days old)
> > References :
http://marc.info/?l=linux-kernel&m=121076435420129&w=4
> > Handled-By : David Brownell <david-b@pacbell.net>
>
> Just re-checked, and this device (a USB to dual PS/2 cable) works
> fine on 2.6.25 on this hardware:
>
> usb 1-1: new low speed USB device using orion-ehci and address 2
> usb 1-1: configuration #1 chosen from 1 choice
> input: PS2 to USB AdapterA3 as /class/input/input0
> input: USB HID v1.10 Keyboard [PS2 to USB AdapterA3] on usb-orion-ehci.0-1
> input: PS2 to USB AdapterA3 as /class/input/input1
> input: USB HID v1.10 Mouse [PS2 to USB AdapterA3] on usb-orion-ehci.0-1
>
> But on 2.6.26-rc3 it just gives me:
>
> usb 1-1: new low speed USB device using orion-ehci and address 2
> Unable to handle kernel NULL pointer dereference at virtual address 00000000
> pgd = c0004000
> [00000000] *pgd=00000000
> Internal error: Oops: 5 [#1] PREEMPT
> Modules linked in:
> CPU: 0 Not tainted (2.6.26-rc3 #347)
> PC is at qh_append_tds+0x24c/0x47c
> LR is at ehci_qtd_alloc+0x30/0x5c
> pc : [<c0242374>] lr : [<c0241d48>] psr: 00000093
> sp : c7cfdcb0 ip : c7e3c4c0 fp : c7cfdcfc
> r10: ffc83080 r9 : 00000008 r8 : c7d12240
> r7 : 80000080 r6 : 00000080 r5 : 00000000 r4 : 00000002
> r3 : c7d3f000 r2 : 00000000 r1 : 40800000 r0 : 08085000
> Flags: nzcv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel
> Control: 0005317f Table: 00004000 DAC: 00000017
> Process khubd (pid: 79, stack limit = 0xc7cfc268)
> Stack: (0xc7cfdcb0 to 0xc7cfe000)
> [...]
> Backtrace:
> [<c0242128>] (qh_append_tds+0x0/0x47c) from [<c0243ca0>] (ehci_urb_enqueue+0x100/0xff4)
> [<c0243ba0>] (ehci_urb_enqueue+0x0/0xff4) from [<c0234c30>] (usb_hcd_submit_urb+0x824/0x91c)
> [<c023440c>] (usb_hcd_submit_urb+0x0/0x91c) from [<c0235098>] (usb_submit_urb+0x224/0x260)
> [<c0234e74>] (usb_submit_urb+0x0/0x260) from [<c0235b5c>] (usb_start_wait_urb+0x44/0xac)
> r6:c7d12240 r5:c7cfde80 r4:00000000
> [<c0235b18>] (usb_start_wait_urb+0x0/0xac) from [<c0235dac>] (usb_control_msg+0xc8/0xec)
> r8:00000000 r7:00000100 r6:fffffff4 r5:00000040 r4:c7e3dc20
> [<c0235ce4>] (usb_control_msg+0x0/0xec) from [<c0230854>] (hub_port_init+0x274/0x5e4)
> [<c02305e0>] (hub_port_init+0x0/0x5e4) from [<c0231bec>] (hub_thread+0x608/0xc10)
> [<c02315e4>] (hub_thread+0x0/0xc10) from [<c0059e20>] (kthread+0x5c/0x94)
> [<c0059dc4>] (kthread+0x0/0x94) from [<c0047908>] (do_exit+0x0/0x67c)
> r6:00000000 r5:00000000 r4:00000000
> Code: e51bc040 e5932000 e51c309c e1520003 (15923000)
> ---[ end trace ce1992535f2e8e4d ]---
> note: khubd[79] exited with preempt_count 1
>
> If you have no idea what might have caused this to creep in, I guess
> I'll have to bisect it?
