No panic. On Mon, May 4, 2015 at 6:51 PM, Lu, Baolu <baolu.lu@xxxxxxxxxxxxxxx> wrote: > I didn't find any hints in the dmesg. > > System "reboots" during "shutdown" could be probably due to a panic > during shutdown path. Since you have discovered that USB 3.0 mode > matters, I would suggest you to try to insert and remove xhci module > dynamically during run-time. (Make sure that you have compiled xhci > as a module.) > > #lsmod | grep xhci > #rmmod xhci_pci > #modprobe xhci_pci > > Does panic happen? > > Thanks, > Baolu > > > On 05/05/2015 12:17 AM, Brian Monroe wrote: >> >> http://fpaste.org/218248/43075468/ dmesg --kernel output after >> receiving the bug, this was also put on the bug report. Let me know if >> you need any other logs. >> >> On Mon, May 4, 2015 at 8:16 AM, Brian Monroe <briancmonroe@xxxxxxxxx> >> wrote: >>> >>> It's on Fedora 21 (though it was present in Fedora 20 as well) there's >>> a bug report with Redhat's bugzilla in the description. I don't think >>> those commands will work on my system, but I'll get it straightened >>> out and get back to you on the usbcore and xhci logs. >>> >>> On Mon, May 4, 2015 at 8:14 AM, Brian Monroe <briancmonroe@xxxxxxxxx> >>> wrote: >>>> >>>> It's on Fedora 21 (though it was present in Fedora 20 as well) there's a >>>> bug >>>> report with Redhat's bugzilla in the description. I don't think those >>>> commands will work on my system, but I'll get it straightened out and >>>> get >>>> back to you on the usbcore and xhci logs. >>>> >>>> On Sun, May 3, 2015 at 6:40 PM Lu, Baolu <baolu.lu@xxxxxxxxxxxxxxx> >>>> wrote: >>>>> >>>>> Hi Brian Monroe, >>>>> >>>>> On which platform did you see this problem? >>>>> >>>>> Do you have any kernel messages when this problem happens? >>>>> >>>>> It should be more helpful if we have kernel messages with usbcore and >>>>> xhci dynamic debug enabled. >>>>> >>>>> "usbcore" and "xhci" dynamic debug could be enabled with below >>>>> commands. >>>>> >>>>> # echo -n 'module xhci_hcd =p' > >>>>> /sys/kernel/debug/dynamic_debug/control >>>>> # echo -n 'module usbcore =p' > /sys/kernel/debug/dynamic_debug/control >>>>> >>>>> Thanks, >>>>> Baolu >>>>> >>>>> On 04/29/2015 02:23 AM, Brian Monroe wrote: >>>>>> >>>>>> I filed a bug with kernel.org: >>>>>> https://bugzilla.kernel.org/show_bug.cgi?id=97391 and Greg >>>>>> Kroah-Hartman requested that I email this list to advise you of the >>>>>> issue as well. >>>>>> >>>>>> There's also a bug that's been filed with Fedora >>>>>> https://bugzilla.redhat.com/show_bug.cgi?id=1168557 for this issue, >>>>>> and there's the lspci info from different machines listed there. >>>>>> >>>>>> The computer will reboot instead of shutting down. We found a work >>>>>> around when you disable xHCI (and consequently USB3) support in the >>>>>> BIOS and the bug goes away. This has been present in Version 3.17 and >>>>>> later in the kernel changes for Fedora 21. >>>>>> -- >>>>>> To unsubscribe from this list: send the line "unsubscribe linux-usb" >>>>>> in >>>>>> the body of a message to majordomo@xxxxxxxxxxxxxxx >>>>>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>>>>> >>>>>> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-usb" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> >> > -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
