Messages in this thread | | | From | Pingfan Liu <> | Date | Wed, 12 Sep 2018 14:41:10 +0800 | Subject | Re: [REGRESSION] Errors at reboot after 722e5f2b1eec |
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On Tue, Sep 11, 2018 at 5:37 PM Greg Kroah-Hartman <gregkh@linuxfoundation.org> wrote: > > On Tue, Sep 11, 2018 at 10:17:44AM +0200, Takashi Iwai wrote: > > [ seems like my previous post didn't go out properly; if you have > > already received it, please discard this one ] > > Sorry, I got it, it's just in my large queue :( > > > Hi Rafael, Greg, > > > > James Wang reported on SUSE bugzilla that his machine spews many > > AMD-Vi errors at reboot like: > > > > [ 154.907879] systemd-shutdown[1]: Detaching loop devices. > > [ 154.954583] kvm: exiting hardware virtualization > > [ 154.999953] usb 5-2: USB disconnect, device number 2 > > [ 155.025278] ohci-pci 0000:00:12.1: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0006 address=0x0000000000000080 flags=0x0020] > > [ 155.081360] ohci-pci 0000:00:12.1: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0006 address=0x0000000000000080 flags=0x0020] > > [ 155.136778] ohci-pci 0000:00:12.1: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0006 address=0x0000000000000080 flags=0x0020] > > [ 155.191772] ohci-pci 0000:00:12.1: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0006 address=0x0000000000000080 flags=0x0020] > > [ 155.247055] ohci-pci 0000:00:12.1: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0006 address=0x0000000000000080 flags=0x0020] > > [ 155.302614] ohci-pci 0000:00:12.1: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0006 address=0x0000000000000080 flags=0x0020] > > [ 155.358996] ohci-pci 0000:00:12.1: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0006 address=0x0000000000000080 flags=0x0020] > > [ 155.392155] usb 4-2: new full-speed USB device number 2 using ohci-pci > > [ 155.413752] ohci-pci 0000:00:12.1: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0006 address=0x0000000000000080 flags=0x0020] > > [ 155.413762] ohci-pci 0000:00:12.1: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0006 address=0x0000000000000080 flags=0x0020] > > [ 155.560307] ohci-pci 0000:00:12.1: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0006 address=0x0000000000000080 flags=0x0020] > > [ 155.616039] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:12.1 domain=0x0006 address=0x0000000000000080 flags=0x0020] > > [ 155.667843] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:12.1 domain=0x0006 address=0x0000000000000080 flags=0x0020] > > [ 155.719497] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:12.1 domain=0x0006 address=0x0000000000000080 flags=0x0020] > > [ 155.772697] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:12.1 domain=0x0006 address=0x0000000000000080 flags=0x0020] > > [ 155.823919] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:12.1 domain=0x0006 address=0x0000000000000080 flags=0x0020] > > [ 155.875490] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:12.1 domain=0x0006 address=0x0000000000000080 flags=0x0020] > > [ 155.927258] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:12.1 domain=0x0006 address=0x0000000000000080 flags=0x0020] > > [ 155.979318] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:12.1 domain=0x0006 address=0x0000000000000080 flags=0x0020] > > [ 156.031813] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:12.1 domain=0x0006 address=0x0000000000000080 flags=0x0020] > > [ 156.084293] AMD-Vi: Event logged [IO_PAGE_FAULT device=00:12.1 domain=0x0006 address=0x0000000000000080 flags=0x0020] > > [ 156.272157] reboot: Restarting system > > [ 156.290316] reboot: machine restart > > [...] > > The errors are clearly related with the USB device (a KVM device, > > IIRC), and the errors are not seen if the USB device is disconnected. > > Sounds like the io pgtbl is invalidated before ohci-pci. But I can not figure out why, since it is very late to tear down of iommu, which is after device_shutdown()
Cc James, could you try to enable initcall_debug, and paste the shutdown seq with 722e5f2b1eec ("driver core: Partially revert "driver core: correct device's shutdown order"") and without it?
Thanks, Pingfan
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