Messages in this thread | | | Date | Thu, 30 Oct 2003 07:11:42 -0800 | From | David Brownell <> | Subject | Re: [linux-usb-devel] Re: serious 2.6 bug in USB subsystem? |
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David Mosberger wrote: > > On x86, there is no OOps, it just freezes. On ia64, I get a nice MCA > and from that we can infer that a USB host controller read from > address 0xf0000000 caused the problem but since this is asynchronous > to the kernel's code path, the instruction pointer etc. in the MCA > state dump isn't terribly helpful.
Does that 0xf0000000 (on ia64) match any obvious address mapping of the null pointer -- like a dma mapping? I'm not sure that if the HID driver were to pass a null buffer pointer, it would be caught anywhere.
- Dave
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