Messages in this thread | | | Date | Tue, 01 Jan 2013 10:17:50 -0500 | From | Woody Suwalski <> | Subject | Re: INVALID Linux 3.8-rc1 - another regression on USB :-( |
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Woody Suwalski wrote: > Greg Kroah-Hartman wrote: >> On Sun, Dec 23, 2012 at 02:35:49PM -0800, Linus Torvalds wrote: >>> Woody, >>> Any chance you can bisect this? It's not going to be hugely pleasant >>> (with 11k+ commits in between 3.7 and 3.8-rc1 you'll have to compile >>> and test at least 14 kernels), but it would help enormously. Of >>> course, maybe some USB person can guess what would cause the device to >>> go offline.. >>> >>> Added Greg and the linux-usb mailing list to the participants list: >>> the images are in the original email on lkml, but there isn't anything >>> particularly interesting there, it really just seems to be an >>> unexpected and spurious USB disconnect, resulting in "USB disconnect, >>> device number 2" followed by "Rejecting I/O to offline device". >> I don't see any images on lkml, sorry. >> >> The kernel log for when the disconnect happened would be great to get. >> >> The kernel can't cause a device to disconnect, that's an electrical >> thing usually, is this perchance a flaky device/connection? Or has it >> always worked on older kernels? >> >> What host controller is being used here (xhci, ehci, etc.?) >> >> thanks, >> >> greg k-h > I backtrack - it is not directly a USB problem. > If I boot the image into a single mode, and then verify reading the > squashfs as a compressed file or the files in the mounted uncompressed > image - there are no errors on read. > Yet if i let it boot into X - it does not - gets bogged with disk > access errors. > And then there is no access to a USB key anymore. > Will need to investigate further.. > > Sorry for the alarm, Greg... > Problem must be caused by third-party patches - tests with vanilla+overlayfs show that all works as expected.
Happy New Year 2013 redfaced Woody
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