Created attachment 228931 [details] dmesg_4.8.0-040800rc2-lowlatency Mount USB Pendrive dmesg: [ 4630.693915] scsi host6: runtime PM trying to activate child device host6 but parent (2-2:1.0) is not active
Created attachment 228941 [details] lspci -vvnn
>>>>> "Heiner" == Heiner Kallweit <hkallweit1@gmail.com> writes: Heiner> This issue is fixed by patch scsi: "core: configure runtime pm Heiner> before calling device_add in scsi_add_host_with_dma" I sent on Heiner> Aug 3rd. Severely lacking in the reviews department, though :(
Error message present in 4.8.0-rc3 Error message disappears after applying fix https://patchwork.kernel.org/patch/9262149/ Would be good to merge the fix before 4.9.0 is released
(In reply to Martin K. Petersen from comment #2) > Severely lacking in the reviews department, though :( Martin, the reporter considers this a regression, but according to https://patchwork.kernel.org/patch/9262149/ you applied the fix to 4.9/scsi-queue – and it's not in mainline yet afaics. Was that an accident or do you think this is not serious enough and thus better dealt with in 4.9?
I would like the change to get a bit of soak time before we backport it.
I'm seeing the same dmesg output too, on 2 machines with 4.8.0 rc7 / rc8 kernels. It seems like this bug is preventing me on these machines to use any USB thumb drives at all. In case anyone can confirm this I think it should go into 4.8.0 before release immediately.
(In reply to Christian Stadelmann from comment #6) > It seems like this bug is preventing me on these machines to use any USB > thumb drives at all. In case anyone can confirm this I think it should go > into 4.8.0 before release immediately. Ok, I am not sure about this, there is a SELinux/Gnome issue involved and probably other stuff too. Manually mounting the device works fine. So no, this kernel issue is not preventing me from mounting the USB devices.
*** Bug 175431 has been marked as a duplicate of this bug. ***
(In reply to Christian Stadelmann from comment #6) > It seems like this bug is preventing me on these machines to use any USB > thumb drives at all. In case anyone can confirm this I think it should go > into 4.8.0 before release immediately. Can somebody confirm or deny that this is preventing you from mounting any USB thumb drives?
This is preventing me from booting Ubuntu 16.10: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1631058?comments=all But I am not using a low-latency kernel.