Messages in this thread | | | Date | Fri, 25 May 2007 11:50:16 +0200 (CEST) | From | Jiri Kosina <> | Subject | Re: [BUG] USB input death then system freeze |
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On Thu, 24 May 2007, Nicolas Mailhot wrote:
> Most recent kernel where this bug did *NOT* occur: pre 2.6.21 mm > kernels, non-mm 2.6.22-rc2 > Distribution: Fedora Devel > Hardware Environment: EHCI input on external powered hub with CK804 mainboard > Software Environment: Nothing specific > Problem Description: > After a few hours of activity 2.6.22-rc1-mm1 and 2.6.22-rc2-mm1 will lose USB > HID INPUT (keyboard or mice with no priority), then the system will freeze > drivers/hid/usbhid/hid-core.c: input irq status -75 received
This is now handled in bugzilla [1]. Zan Lynx also reported this problem, and from the HID_DEBUG output he provided is evident that it is caused by HID layer receiving a report of size 4294967284 (which corresponds to urb->actual_length of the URB received from USB core).
Alan Stern suggested to reproduce the bug with CONFIG_USB_DEBUG and also collect the usbmon trace, so that we can clearly understand what happens.
I am now inclined to think that this is caused by USB core messing up the URB somehow, HID core seems to receive the URB with already bogus values.
[1] http://bugzilla.kernel.org/show_bug.cgi?id=8535
Thanks,
-- Jiri Kosina - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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