Messages in this thread | | | Date | Fri, 10 Apr 2009 11:18:35 -0400 | From | "John Stoffel" <> | Subject | Re: usb_mon oops Re: tcpdump crashes 2.6.29.1 (and 2.6.29-rc5) |
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Pete> On Thu, 9 Apr 2009 23:01:09 -0400, "John Stoffel" <john@stoffel.org> wrote: >> Any suggestions of a known good state I should start bisection from?
Pete> No suggestions, sorry. The part of usbmon that peeks at DMA-ed Pete> data wasn't touched since December 2006. It worked fine since Pete> then, your oops is the first. So, I don't expect bisection to Pete> help. At best you're going to find the commit where uvcvideo Pete> was merged.
I guess my next step would be to unload that module and see if the crash happens while I have usbmon loaded.
Pete> The right way forward is to deduce what's going on, IMHO. Maybe Pete> usbmon is trying to take an address in the GART aperture and Pete> convert it into a struct page. Or the direction in URB Pete> mismatches endpoint. Or any number of other things.
I do have the Radeon driver installed, with DRI, etc.
Pete> I'm working on it, but I'm not done with puzzling out the dmesg Pete> you sent me, sorry again.
Let me know if you want me to put in debugging messages or try for more netconsole output. I built a bunch of kernels last night, but ran out of reboot time (learning git...) to test them. I figured I'd go back to 2.6.26 and see if I had the problem there. If not, it's a good start for bisection.
I'll keep poking at this, though tax time is starting to fill my time right now too. :]
John
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